Apple Inc.  Apple iPadOS 16: iPad Security Target Version: 1.1 Status: Final Last Update: 2023-09-26 Validation Body: NIAP Validation ID: VID11350 Classification: Public Apple iPadOS 16: iPad Security Target VID11350 Trademarks Apple's trademarks applicable to this document are listed in https://www.apple.com/legal/intellectual-property /trademark/appletmlist.html Other company, product, and service names may be trademarks or service marks of others. Legal Notice This document is provided AS IS with no express or implied warranties. Use the information in this document at your own risk. This document may be reproduced and distributed only in its original entirety without revision. Revision History Version Date Author(s) Changes to Previous Revision 1.0 2023-09-08 Alejandro Masino Final. 1.1 2023-09-26 Alejandro Masino Update in conformance claims. Version: 1.1 Classification: Public Page 2 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Table of Contents 1 Introduction ......................................................................................................................... 13 1.1 Security Target Identification ........................................................................................................... 13 1.2 TOE Identification ............................................................................................................................ 13 1.3 TOE Type ......................................................................................................................................... 13 1.4 TOE Overview .................................................................................................................................. 13 1.5 TOE Description ............................................................................................................................... 14 1.5.1 Introduction ............................................................................................................................. 14 1.5.1.1 General information ....................................................................................................... 14 1.5.1.2 Obtaining the mobile devices ........................................................................................ 15 1.5.1.3 Obtaining software updates .......................................................................................... 15 1.5.1.4 Supervising and configuring the mobile devices ........................................................... 15 1.5.2 TOE Architecture .................................................................................................................... 16 1.5.2.1 Physical Boundaries ...................................................................................................... 17 1.5.2.2 Security Functions provided by the TOE ...................................................................... 17 1.5.2.2.1 Cryptographic Support ........................................................................................ 17 1.5.2.2.2 User Data Protection ........................................................................................... 21 1.5.2.2.3 Identification and Authentication ......................................................................... 21 1.5.2.2.4 Security Management ......................................................................................... 21 1.5.2.2.5 Protection of the TSF .......................................................................................... 21 1.5.2.2.6 TOE Access ........................................................................................................ 22 1.5.2.2.7 Trusted Path/Channels ....................................................................................... 22 1.5.2.2.8 Audit ................................................................................................................... 22 1.5.3 TOE Documentation ............................................................................................................... 22 2 CC Conformance Claim ........................................................................................................ 25 2.1 Base-PP: Protection Profile for Mobile Device Fundamentals [MDF] .............................................. 25 2.2 PP-Module: collaborative PP-Module for Biometric enrolment and verification - for unlocking the device [BIO] ............................................................................................................................................. 26 2.3 PP-Module for Bluetooth [BT] ........................................................................................................ 26 2.4 PP-Module for MDM Agents [Agent] .............................................................................................. 27 2.5 PP-Module for Virtual Private Network (VPN) Clients [VPNC] ........................................................ 27 2.6 PP-Module for WLAN Clients [WLANC] ......................................................................................... 28 2.7 Functional Package for Transport Layer Security (TLS) [TLSPKG] ................................................. 28 3 Security Problem Definition ................................................................................................. 30 3.1 Threat Environment ......................................................................................................................... 30 3.1.1 Threats countered by the TOE .............................................................................................. 30 3.2 Assumptions ................................................................................................................................... 33 3.3 Organizational Security Policies ..................................................................................................... 34 4 Security Objectives ............................................................................................................. 36 4.1 Objectives for the TOE ................................................................................................................... 36 4.2 Objectives for the Operational Environment ................................................................................... 39 4.3 Security Objectives Rationale ......................................................................................................... 40 Version: 1.1 Classification: Public Page 3 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 5 Extended Components Definition .......................................................................................... 41 6 Security Requirements ........................................................................................................ 42 6.1 TOE Security Functional Requirements ........................................................................................... 42 6.1.1 Security audit (FAU) .............................................................................................................. 48 6.1.1.1 FAU_ALT_EXT.2 Agent Alerts ...................................................................................... 48 6.1.1.2 FAU_GEN.1 Audit Data Generation .............................................................................. 48 6.1.1.3 FAU_GEN.1(2) Audit Data Generation .......................................................................... 51 6.1.1.4 FAU_GEN.1/BT Audit Data Generation (Bluetooth) ...................................................... 52 6.1.1.5 FAU_GEN.1/VPN Audit Data Generation ...................................................................... 53 6.1.1.6 FAU_GEN.1/WLAN Audit Data Generation (Wireless LAN) .......................................... 54 6.1.1.7 FAU_SAR.1 Audit Review ............................................................................................. 55 6.1.1.8 FAU_SEL.1(2) Security Audit Event Selection .............................................................. 55 6.1.1.9 FAU_STG.1 Audit Storage Protection .......................................................................... 56 6.1.1.10 FAU_STG.4 Prevention of Audit Data Loss ................................................................ 56 6.1.2 Cryptographic support (FCS) ................................................................................................ 56 6.1.2.1 FCS_CKM.1 Cryptographic Key Generation ................................................................. 56 6.1.2.2 FCS_CKM.1/VPN VPN Cryptographic Key Generation (IKE) ........................................ 56 6.1.2.3 FCS_CKM.1/WPA Cryptographic Key Generation (Symmetric Keys for WPA2/WPA3 Connections) ............................................................................................................................. 57 6.1.2.4 FCS_CKM.2/UNLOCKED Cryptographic Key Establishment ....................................... 57 6.1.2.5 FCS_CKM.2/LOCKED Cryptographic Key Establishment ............................................ 57 6.1.2.6 FCS_CKM.2/WLAN Cryptographic Key Distribution (Group Temporal Key for WLAN) .................................................................................................................................................... 58 6.1.2.7 FCS_CKM_EXT.1 Cryptographic Key Support ............................................................. 58 6.1.2.8 FCS_CKM_EXT.2 Cryptographic Key Random Generation .......................................... 58 6.1.2.9 FCS_CKM_EXT.3 Cryptographic Key Generation ........................................................ 58 6.1.2.10 FCS_CKM_EXT.4 Key Destruction ............................................................................. 59 6.1.2.11 FCS_CKM_EXT.5 TSF Wipe ....................................................................................... 59 6.1.2.12 FCS_CKM_EXT.6 Salt Generation .............................................................................. 59 6.1.2.13 FCS_CKM_EXT.7 Cryptographic Key Support (REK) ................................................. 60 6.1.2.14 FCS_CKM_EXT.8 Bluetooth Key Generation ............................................................. 60 6.1.2.15 FCS_COP.1/ENCRYPT Cryptographic Operation ....................................................... 60 6.1.2.16 FCS_COP.1/HASH Cryptographic Operation ............................................................. 60 6.1.2.17 FCS_COP.1/SIGN Cryptographic Operation ............................................................... 60 6.1.2.18 FCS_COP.1/KEYHMAC Cryptographic Operation ...................................................... 61 6.1.2.19 FCS_COP.1/CONDITION Cryptographic Operation .................................................... 61 6.1.2.20 FCS_HTTPS_EXT.1 HTTPS Protocol .......................................................................... 61 6.1.2.21 FCS_IPSEC_EXT.1 IPsec ............................................................................................ 62 6.1.2.22 FCS_IV_EXT.1 Initialization Vector Generation .......................................................... 63 6.1.2.23 FCS_RBG_EXT.1/HW Random Bit Generation (Hardware) ........................................ 63 6.1.2.24 FCS_RBG_EXT.1/SW Random Bit Generation (Software) .......................................... 64 6.1.2.25 FCS_SRV_EXT.1 Cryptographic Algorithm Services .................................................. 64 6.1.2.26 FCS_STG_EXT.1 Cryptographic Key Storage ............................................................ 64 6.1.2.27 FCS_STG_EXT.2 Encrypted Cryptographic Key Storage ........................................... 65 Version: 1.1 Classification: Public Page 4 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6.1.2.28 FCS_STG_EXT.3 Integrity of Encrypted Key Storage ................................................ 65 6.1.2.29 FCS_STG_EXT.4 Cryptographic Key Storage ........................................................... 65 6.1.2.30 FCS_TLS_EXT.1 TLS Protocol ................................................................................... 66 6.1.2.31 FCS_TLSC_EXT.1 TLS Client Protocol ....................................................................... 66 6.1.2.32 FCS_TLSC_EXT.1/WLAN TLS Client Protocol (EAP-TLS for WLAN) ......................... 66 6.1.2.33 FCS_TLSC_EXT.2 TLS Client Support for Mutual Authentication .............................. 67 6.1.2.34 FCS_TLSC_EXT.4 TLS Client Support for Renegotiation ........................................... 67 6.1.2.35 FCS_TLSC_EXT.5 TLS Client Support for Supported Groups Extension ................... 67 6.1.2.36 FCS_WPA_EXT.1 Supported WPA Versions .............................................................. 67 6.1.3 User data protection (FDP) ................................................................................................... 68 6.1.3.1 FDP_ACF_EXT.1 Access Control for System Services ................................................. 68 6.1.3.2 FDP_ACF_EXT.2 Access Control for System Resources ............................................. 68 6.1.3.3 FDP_DAR_EXT.1 Protected Data Encryption ............................................................... 68 6.1.3.4 FDP_DAR_EXT.2 Sensitive Data Encryption ................................................................ 68 6.1.3.5 FDP_IFC_EXT.1 Subset Information Flow Control ........................................................ 69 6.1.3.6 FDP_RIP.2 Full Residual Information Protection .......................................................... 69 6.1.3.7 FDP_STG_EXT.1 User Data Storage ............................................................................ 69 6.1.3.8 FDP_UPC_EXT.1/APPS Inter-TSF User Data Transfer Protection (Applications) ......... 69 6.1.3.9 FDP_UPC_EXT.1/BLUETOOTH Inter-TSF User Data Transfer Protection (Bluetooth) ... 70 6.1.3.10 FDP_VPN_EXT.1 Split Tunnel Prevention ................................................................... 70 6.1.4 Identification and authentication (FIA) ................................................................................... 70 6.1.4.1 FIA_AFL_EXT.1 Authentication Failure Handling .......................................................... 70 6.1.4.2 FIA_BLT_EXT.1 Bluetooth User Authorization .............................................................. 71 6.1.4.3 FIA_BLT_EXT.2 Bluetooth Mutual Authentication ........................................................ 71 6.1.4.4 FIA_BLT_EXT.3 Rejection of Duplicate Bluetooth Connections .................................... 71 6.1.4.5 FIA_BLT_EXT.4 Secure Simple Pairing ........................................................................ 71 6.1.4.6 FIA_BLT_EXT.6 Trusted Bluetooth Device User Authorization .................................... 72 6.1.4.7 FIA_BLT_EXT.7 Untrusted Bluetooth Device User Authorization ................................. 72 6.1.4.8 FIA_ENR_EXT.2 Agent Enrollment of Mobile Device into Management ....................... 72 6.1.4.9 FIA_MBE_EXT.1 Biometric enrolment .......................................................................... 72 6.1.4.10 FIA_MBE_EXT.2 Quality of biometric templates for biometric enrolment ................... 72 6.1.4.11 FIA_MBV_EXT.1 Biometric verification ........................................................................ 72 6.1.4.12 FIA_MBV_EXT.2 Quality of biometric samples for biometric verification .................... 73 6.1.4.13 FIA_PAE_EXT.1 Port Access Entity Authentication .................................................... 73 6.1.4.14 FIA_PMG_EXT.1 Password Management ................................................................... 73 6.1.4.15 FIA_TRT_EXT.1 Authentication Throttling .................................................................. 73 6.1.4.16 FIA_UAU.5 Multiple Authentication Mechanisms ....................................................... 73 6.1.4.17 FIA_UAU.6/CREDENTIAL Re-Authenticating (Credential Change) ............................ 74 6.1.4.18 FIA_UAU.6/LOCKED Re-Authenticating (TSF Lock) .................................................. 74 6.1.4.19 FIA_UAU.7 Protected Authentication Feedback ........................................................ 74 6.1.4.20 FIA_UAU_EXT.1 Authentication for Cryptographic Operation .................................... 74 6.1.4.21 FIA_UAU_EXT.2 Timing of Authentication ................................................................. 74 6.1.4.22 FIA_X509_EXT.1 X.509 Validation of Certificates ..................................................... 75 6.1.4.23 FIA_X509_EXT.1/WLAN X.509 Certificate Validation ................................................ 75 Version: 1.1 Classification: Public Page 5 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6.1.4.24 FIA_X509_EXT.2 X.509 Certificate Authentication ................................................... 76 6.1.4.25 FIA_X509_EXT.2/WLAN X.509 Certificate Authentication (EAP-TLS for WLAN) ..... 76 6.1.4.26 FIA_X509_EXT.3 Request Validation of Certificates ................................................. 77 6.1.4.27 FIA_X509_EXT.6 Certificate Storage and Management ............................................ 77 6.1.5 Security management (FMT) ................................................................................................. 77 6.1.5.1 FMT_MOF_EXT.1 Management of Security Functions Behavior ................................... 77 6.1.5.2 FMT_POL_EXT.2 Agent Trusted Policy Update ........................................................... 77 6.1.5.3 FMT_SMF.1 Specification of Management Functions .................................................. 78 6.1.5.4 FMT_SMF.1/VPN Specification of Management Functions (VPN) ............................... 80 6.1.5.5 FMT_SMF.1/WLAN Specification of Management Functions (WLAN Client) ............... 80 6.1.5.6 FMT_SMF_EXT.1/BT Specification of Management Functions ..................................... 81 6.1.5.7 FMT_SMF_EXT.2 Specification of Remediation Actions .............................................. 82 6.1.5.8 FMT_SMF_EXT.4 Specification of Management Functions ......................................... 82 6.1.5.9 FMT_UNR_EXT.1 User Unenrollment Prevention ......................................................... 83 6.1.6 Protection of the TSF (FPT) .................................................................................................. 83 6.1.6.1 FPT_AEX_EXT.1 Application Address Space Layout Randomization ............................ 83 6.1.6.2 FPT_AEX_EXT.2 Memory Page Permissions ............................................................... 83 6.1.6.3 FPT_AEX_EXT.3 Stack Overflow Protection ................................................................ 83 6.1.6.4 FPT_AEX_EXT.4 Domain Isolation ............................................................................... 83 6.1.6.5 FPT_BDP_EXT.1 Biometric data processing ................................................................ 84 6.1.6.6 FPT_JTA_EXT.1 JTAG Disablement ............................................................................ 84 6.1.6.7 FPT_KST_EXT.1 Key Storage ...................................................................................... 84 6.1.6.8 FPT_KST_EXT.2 No Key Transmission ....................................................................... 84 6.1.6.9 FPT_KST_EXT.3 No Plaintext Key Export ................................................................... 84 6.1.6.10 FPT_NOT_EXT.1 Self-Test Notification ..................................................................... 84 6.1.6.11 FPT_PBT_EXT.1 Protection of biometric template ...................................................... 85 6.1.6.12 FPT_STM.1 Reliable Time Stamps ............................................................................. 85 6.1.6.13 FPT_TST_EXT.1 TSF Cryptographic Functionality Testing ........................................ 85 6.1.6.14 FPT_TST_EXT.1/VPN TSF Self-Test .......................................................................... 85 6.1.6.15 FPT_TST_EXT.2/PREKERNEL TSF Integrity Checking (Pre-Kernel) ........................... 85 6.1.6.16 FPT_TST_EXT.2/POSTKERNEL TSF Integrity Checking (Post-Kernel) ...................... 86 6.1.6.17 FPT_TST_EXT.3 TSF Integrity Testing ....................................................................... 86 6.1.6.18 FPT_TST_EXT.3/WLAN TSF Cryptographic Functionality Testing (WLAN Client) ..... 86 6.1.6.19 FPT_TUD_EXT.1 TSF Version Query ......................................................................... 86 6.1.6.20 FPT_TUD_EXT.2 TSF Update Verification ................................................................. 87 6.1.6.21 FPT_TUD_EXT.3 Application Signing ......................................................................... 87 6.1.6.22 FPT_TUD_EXT.4 Trusted Update Verification ........................................................... 87 6.1.6.23 FPT_TUD_EXT.5 Application Verification .................................................................. 87 6.1.6.24 FPT_TUD_EXT.6 Trusted Update Verification ........................................................... 87 6.1.7 TOE access (FTA) ................................................................................................................. 88 6.1.7.1 FTA_SSL_EXT.1 TSF- and User-initiated Locked State ............................................... 88 6.1.7.2 FTA_TAB.1 Default TOE Access Banners .................................................................... 88 6.1.7.3 FTA_WSE_EXT.1 Wireless Network Access ................................................................ 88 6.1.8 Trusted path/channels (FTP) ................................................................................................. 88 Version: 1.1 Classification: Public Page 6 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6.1.8.1 FTP_BLT_EXT.1 Bluetooth Encryption ......................................................................... 88 6.1.8.2 FTP_BLT_EXT.2 Persistence of Bluetooth Encryption ................................................. 89 6.1.8.3 FTP_BLT_EXT.3/BR Bluetooth Encryption Parameters (BR/EDR) ................................ 89 6.1.8.4 FTP_BLT_EXT.3/LE Bluetooth Encryption Parameters (LE) ......................................... 89 6.1.8.5 FTP_ITC.1/WLAN Trusted Channel Communication (Wireless LAN) ........................... 89 6.1.8.6 FTP_ITC_EXT.1 Trusted Channel Communication ....................................................... 89 6.1.8.7 FTP_ITC_EXT.1(2) Trusted Channel Communication .................................................. 90 6.1.8.8 FTP_TRP.1(2) Trusted Path (for Enrollment) ............................................................... 90 6.2 Security Functional Requirements Rationale ................................................................................... 91 6.3 Security Assurance Requirements .................................................................................................. 91 6.3.1 ALC Life-cycle support .......................................................................................................... 91 6.3.1.1 ALC_TSU_EXT.1 Timely Security Updates .................................................................... 91 6.4 Security Assurance Requirements Rationale .................................................................................. 92 7 TOE Summary Specification ................................................................................................. 93 7.1 TOE Security Functionality ............................................................................................................. 118 7.1.1 Hardware Protection Functions ............................................................................................. 118 7.1.1.1 The Secure Enclave Processor (SEP) ........................................................................... 118 7.1.2 Cryptographic Support (FCS) ............................................................................................... 119 7.1.2.1 Overview of Key Management ..................................................................................... 119 7.1.2.2 Password based key derivation .................................................................................. 122 7.1.2.3 No plaintext key transmission and export ................................................................... 123 7.1.2.4 Storage of Persistent Secrets and Private Keys by the MDM Agent ........................... 123 7.1.2.5 Randomness extraction and expansion step .............................................................. 127 7.1.2.6 Explanation of usage for cryptographic functions ...................................................... 128 7.1.3 User Data Protection (FDP) .................................................................................................. 131 7.1.3.1 Protection of Files ....................................................................................................... 132 7.1.3.2 Application Access to Files ......................................................................................... 132 7.1.3.3 Declaring the Required Device Capabilities of an Application .................................... 132 7.1.3.4 App Groups ................................................................................................................ 133 7.1.3.5 Restricting Applications Access to Services ............................................................... 133 7.1.3.6 Keychain Data Protection ........................................................................................... 134 7.1.3.7 VPN ............................................................................................................................. 134 7.1.3.8 Keyed Hash ................................................................................................................ 135 7.1.4 Identification and Authentication (FIA) ................................................................................. 135 7.1.4.1 Biometric Authentication ............................................................................................. 136 7.1.4.1.1 Accuracy of Biometric Authentication ................................................................ 136 7.1.4.1.2 Biometric Sample Quality ................................................................................... 137 7.1.4.2 X.509v3 Certificates ................................................................................................... 137 7.1.4.3 MDM Server Reference ID .......................................................................................... 139 7.1.5 Specification of Management Functions (FMT) ................................................................... 140 7.1.5.1 Device Enrollment ....................................................................................................... 140 7.1.5.2 Configuration Profiles ................................................................................................. 140 7.1.5.3 Biometric Authentication Factors (BAFs) .................................................................... 143 Version: 1.1 Classification: Public Page 7 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 7.1.5.4 Device Unenrollment .................................................................................................. 143 7.1.5.5 Radios ......................................................................................................................... 144 7.1.5.6 Audio and Visual collection devices ........................................................................... 145 7.1.5.7 VPN Certificate Credentials ........................................................................................ 145 7.1.5.8 Removal of applications ............................................................................................. 145 7.1.6 Protection of the TSF (FPT) ................................................................................................. 145 7.1.6.1 Secure Boot ................................................................................................................ 145 7.1.6.2 Joint Test Action Group (JTAG) Disablement ............................................................ 146 7.1.6.3 Secure Software Update ............................................................................................ 146 7.1.6.4 Security Updates ........................................................................................................ 147 7.1.6.5 Domain Isolation ......................................................................................................... 147 7.1.6.6 Device Locking ........................................................................................................... 148 7.1.6.7 Time ............................................................................................................................ 149 7.1.6.8 Inventory of TSF Binaries and Libraries ...................................................................... 149 7.1.6.9 Self-Tests ................................................................................................................... 149 7.1.6.9.1 Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] ................... 149 7.1.6.9.2 Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1] ................ 151 7.1.6.9.3 Apple corecrypto Module v13.0 [Apple ARM, Secure Key Store, Hardware, SL2] .................................................................................................................................... 152 7.1.6.9.4 Application integrity .......................................................................................... 153 7.1.7 TOE Access (FTA) ................................................................................................................ 153 7.1.7.1 Session Locking .......................................................................................................... 153 7.1.7.2 Restricting Access to Wireless Networks ................................................................... 154 7.1.7.3 Lock Screen/Access Banner Display .......................................................................... 154 7.1.8 Trusted Path/Channels (FTP) ............................................................................................... 154 7.1.8.1 EAP-TLS and TLS ....................................................................................................... 155 7.1.8.1.1 TLS mutual authentication ................................................................................. 156 7.1.8.1.2 TLS client renegotiation ..................................................................................... 156 7.1.8.2 Bluetooth .................................................................................................................... 156 7.1.8.3 Wireless LAN (WLAN) ................................................................................................ 158 7.1.8.4 VPN ............................................................................................................................ 158 7.1.8.4.1 AlwaysOn VPN .................................................................................................. 158 7.1.8.4.2 IPsec General .................................................................................................... 159 7.1.8.4.3 IPsec Characteristics ........................................................................................ 159 7.1.8.4.4 Peer authentication ........................................................................................... 160 7.1.8.4.5 IKE ..................................................................................................................... 160 7.1.8.4.6 Residual information protection and packet processing .................................... 161 7.1.9 Security Audit (FAU) ............................................................................................................. 161 7.1.9.1 Audit Records .............................................................................................................. 161 7.1.9.2 MDM Agent Alerts ....................................................................................................... 161 7.1.9.2.1 Queuing of Alerts .............................................................................................. 163 7.1.9.2.2 Alerts on successful application of policies ...................................................... 163 7.1.9.2.3 Alerts on receiving periodic reachability events ................................................ 164 8 Abbreviations, Terminology, and References ...................................................................... 165 Version: 1.1 Classification: Public Page 8 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 8.1 Abbreviations ................................................................................................................................. 165 8.2 References .................................................................................................................................... 174 A Appendixes ....................................................................................................................... 180 A.1 Devices Covered by this Evaluation .................................................................................. 180 A.2 Wi-Fi Alliance Certificates ............................................................................................... 189 A.3 SFR to CAVP certificate mappings ................................................................................... 191 A.4 Inventory of TSF Binaries and Libraries ........................................................................... 200 Version: 1.1 Classification: Public Page 9 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 List of Tables Table 1: TOE documents .......................................................................................................................... 22 Table 2: NIAP TDs for MDF ..................................................................................................................... 25 Table 3: NIAP TDs for BIO ....................................................................................................................... 26 Table 4: NIAP TDs for BT ........................................................................................................................ 26 Table 5: NIAP TDs for Agent ................................................................................................................... 27 Table 6: NIAP TDs for VPNC ................................................................................................................... 27 Table 7: NIAP TDs for WLANC ................................................................................................................ 28 Table 8: NIAP TDs for TLSPKG ............................................................................................................... 28 Table 9: SFRs for the TOE ....................................................................................................................... 42 Table 10: Mandatory Auditable Events (MDF) ......................................................................................... 49 Table 11: Auditable Events (Agent) .......................................................................................................... 51 Table 12: Auditable Events (BT) .............................................................................................................. 52 Table 13: Auditable Events (VPN) ............................................................................................................ 53 Table 14: Auditable Events (WLAN) ........................................................................................................ 54 Table 15: Management Functions (MDF/VPNC) ...................................................................................... 78 Table 16: Management Functions (WLANC) ........................................................................................... 80 Table 17: Management Functions (BT) .................................................................................................... 81 Table 18: SARs ......................................................................................................................................... 91 Table 19: SFR to TSS mappings .............................................................................................................. 93 Table 20: Summary of keys and persistent secrets in the TOE OS ........................................................ 121 Table 21: Summary of keys and persistent secrets used by the MDM Agent ........................................ 123 Table 22: Explanation of usage for cryptographic functions in the cryptographic modules ................... 128 Table 23: Keychain to File-system Mapping .......................................................................................... 134 Table 24: MDM Server Reference Identifiers ......................................................................................... 140 Table 25: Removal of applications ......................................................................................................... 145 Table 26: Cryptographic Algorithm Tests .............................................................................................. 150 Table 27: Cryptographic Algorithm Tests ............................................................................................... 151 Table 28: Cryptographic Algorithm Tests .............................................................................................. 152 Table 29: Protocols used for trusted channels ...................................................................................... 154 Table 30: MDM Agent Status Commands .............................................................................................. 161 Table 31: SoC to ISA mappings ............................................................................................................. 180 Table 32: iPad: A9 (ARMv8.1-A) models ............................................................................................... 180 Table 33: iPad: A10 Fusion (ARMv8.1-A) models .................................................................................. 181 Table 34: iPad: A10X Fusion (ARMv8.1-A) models ................................................................................ 181 Table 35: iPad: A12 Bionic (ARMv8.3-A) models .................................................................................. 182 Version: 1.1 Classification: Public Page 10 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Table 36: iPad: A12X Bionic (ARMv8.3-A) models ................................................................................ 183 Table 37: iPad: A12Z Bionic (ARMv8.3-A) models ................................................................................ 184 Table 38: iPad: A13 Bionic (ARMv8.4-A) models .................................................................................. 185 Table 39: iPad: A14 Bionic (ARMv8.5-A) models .................................................................................. 185 Table 40: iPad: A15 Bionic (ARMv8.6-A) models .................................................................................. 186 Table 41: iPad: M1 (ARMv8.5-A) models ............................................................................................... 186 Table 42: iPad: M2 (ARMv8.6-A) models .............................................................................................. 187 Table 43: iPad: Wi-Fi Alliance certificates ............................................................................................. 189 Table 44: SFRs to CAVP certificates for iPads ...................................................................................... 195 Table 45: Broadcom core supported algorithms and CAVP certificates for iPads ................................. 199 Version: 1.1 Classification: Public Page 11 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 List of Figures Figure 1: TOE OS layers ........................................................................................................................... 16 Figure 2: Block Diagram of the Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] ...... 18 Figure 3: Block Diagram of the Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1] ..... 19 Figure 4: Block Diagram of the Apple corecrypto Module v13.0 [Apple ARM, Secure Key Store, Hardware, SL2] ................................................................................................................................................... 20 Figure 5: Key Hierarchy in the TOE OS .................................................................................................. 125 Version: 1.1 Classification: Public Page 12 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 1 Introduction 1.1 Security Target Identification Title: Apple iPadOS 16: iPad Security Target Version: 1.1 Status: Final Date: 2023-09-26 Sponsor: Apple Inc. Developer: Apple Inc. Validation Body: NIAP Validation ID: VID11350 Keywords: Apple, iPad, iPadOS, mobile device 1.2 TOE Identification The TOE is the Apple iPad with Apple iPadOS Version 16.3. 1.3 TOE Type The TOE type is mobile device. 1.4 TOE Overview This document is the Common Criteria (CC) Security Target (ST) for the following: ● Apple iPadOS 16: iPads The devices were tested using the following operating system release: ● iPadOS 16.3 The iPad hardware platforms covered by this evaluation are provided in Appendix A.1 "Devices Covered by this Evaluation". The listed hardware platforms, with Apple iPadOS 16.3 installed, were evaluated as mobile devices in exact conformance with the protection profiles listed in Section 2 "CC Conformance Claim". The TOE is a series of Apple iPad mobile devices running the iPadOS 16 operating system and includes components such as a Mobile Device Management (MDM) Agent, VPN client, WLAN client, Bluetooth, and biometric authentication factors (BAFs). For simplicity, the term "TOE OS" is used throughout this document and refers to the OS release listed above. The TOE OS manages the device hardware, provides MDM Agent functionality, and provides the technologies required to implement native applications (a.k.a. apps). (A native app is an app compiled to run on a specific mobile platform.) It provides a built-in MDM framework application programmer interface (API), giving management features that may be utilized by external MDM solutions, allowing enterprises to use profiles to control some of the device settings. The TOE OS provides a consistent set of capabilities allowing the supervision of enrolled devices. This includes the preparation of devices for deployment, the subsequent management of the devices, and the termination of management. The TOE provides cryptographic services for the encryption of data at rest (DAR) within the TOE, for secure communication channels, for protection of Configuration Profiles, and for use by apps. Version: 1.1 Classification: Public Page 13 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 User data protection is provided by encrypting user data, restricting access by apps, and restricting access until the user has been successfully authenticated. User identification and authentication is provided by a user-defined passphrase (and supplemented by biometric technologies) where the minimum length of the passphrase, passphrase rules, and the maximum number of consecutive failed authentication attempts can be configured by an administrator. Security management capabilities are provided to users via the user interface of the device and to administrators through the installation of Configuration Profiles on the device. This installation can be done using the Apple Configurator 2 tool or by using an MDM system. The TOE protects itself by having its own code and data protected from unauthorized access (using hardware- provided memory protection features), by encrypting internal user and TOE Security Functionality (TSF) data using TSF protected keys and encryption/decryption functions, by conducting self-tests, by ensuring the integrity and authenticity of TSF updates and downloaded apps, and by locking the TOE upon user request or after a defined time of user inactivity. In addition, the TOE implements multiple cryptographic protocols that can be used to establish a trusted channel to other IT entities. The MDM Agent provides secure alerts to the MDM Server indicating status events. From a hardware perspective, the devices use System on a Chip (SoC) technology. Each SoC contains multiple components including the following: ● Application processor ● Secure Enclave ❍ Secure Enclave Processor (SEP) ❍ True Random Number Generator (TRNG) ❍ Secure Enclave AES Engine The application processor runs the rich OS (i.e., iPadOS 16.3). The Secure Enclave is a dedicated secure subsystem integrated into the SoC. It is isolated from the application processor to provide an extra layer of security and is designed to keep sensitive user data secure even when the application processor's kernel becomes compromised. The Secure Enclave includes the SEP, which runs sepOS. (sepOS is bundled with the TOE OS.) The Secure Enclave also includes a hardware TRNG and hardware AES engine. The TRNG and AES engine are directly connected to the SEP and are only accessible through the SEP. 1.5 TOE Description 1.5.1 Introduction 1.5.1.1 General information The TOE is intended to be used as a communication solution providing mobile staff connectivity to enterprise data. The TOE hardware is uniquely identified by the model number (see Appendix A.1 "Devices Covered by this Evaluation") and the TOE software is identified by its version number. The TOE includes documentation that is listed in Section 1.5.3 "TOE Documentation". The TOE provides wireless connectivity and includes support for virtual private network (VPN) connections; for access to the protected enterprise network, enterprise data and apps; and for communicating with other mobile devices. Version: 1.1 Classification: Public Page 14 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The TOE does not include the user apps that run on top of the operating system but does include controls that limit the behavior of the apps and enforce data segregation and impermeability across apps by establishing containerization principles. The TOE may be used as a mobile device within an enterprise environment where the configuration of the device is managed through an MDM solution. 1.5.1.2 Obtaining the mobile devices The normal distribution channels for a regular end user to obtain these hardware devices include the following: ● The Apple Store (either a physical store or online at https://www.apple.com) ● Apple retailers ● Service carriers (e.g., AT&T, Verizon) ● Resellers Business There is a distinct online store for Business customers. From the Apple website (https://www.apple.com), go to the bottom of the page and click "Shop for Business". Or optionally, use the following link. https://www.apple.com/retail/business/ Government Government customers can use the following link. https://www.apple.com/r/store/government/ Additional Large customers can also have their own Apple Store Catalog for their employees to purchase devices directly from Apple under their corporate employee purchase program. 1.5.1.3 Obtaining software updates The TOE devices support wireless and wired software updates. Software update availability can be prompted on the device with a message pushed in the Notification Center or through the Settings » General » Software Update interface. Installation of the latest version of the operating system can be performed automatically (if Automatic Updates is enabled), manually from the device, manually using Finder on macOS versions 10.15.0 (Catalina) and higher, or manually using iTunes on macOS versions prior to 10.15.0 and on PCs. At the highest level, the operating system part of the TOE acts as an intermediary between the underlying hardware and the apps operating on the TOE. Apps do not talk to the underlying hardware directly. Instead, they communicate with the hardware through a set of well-defined system interfaces. These interfaces make it easy to write apps that work consistently on devices having different hardware capabilities. 1.5.1.4 Supervising and configuring the mobile devices The TOE provides an interface allowing the enterprise to supervise devices under the enterprise's control. Supervision gives enterprises greater control over the TOE devices for which they are responsible. With supervision, the administrator can apply extra restrictions like turning off AirDrop or preventing access to the App Store. It also provides additional device configurations and features, like silently updating apps or filtering web usage. The TOE needs to be configured by an administrator to operate in compliance with the requirements defined in this Security Target. The evaluated configuration for this includes the following: ● The requirement to define a passcode for user authentication ● The specification of a passcode policy defining criteria on the minimum length and complexity of a passcode Version: 1.1 Classification: Public Page 15 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● The specification of the maximum number of consecutive failed attempts to enter the passcode ● The specification of the session locking policy ● The specification of the audio and video collection devices allowed ● The specification of the VPN connection ● The specification of the external storage via device connector policy ● The specification of the wireless networks allowed ● The requirement of the certificates in the trust anchor database 1.5.2 TOE Architecture The implementation of TOE architecture can be viewed as a set of layers, which are shown in Figure 1, below. Lower layers contain fundamental services and technologies. Higher-level layers build upon the lower layers and provide more sophisticated services and technologies. Figure 1: TOE OS layers The individual layers provide the following services. The Cocoa Touch layer contains key frameworks for building apps. These frameworks define the appearance of apps. They also provide the basic app infrastructure and support for key technologies such as multitasking, touch-based input, push notifications, and many high-level system services. When designing apps, one should investigate the technologies in this layer first to see if they meet the needs of the developer. The Media layer contains the graphics, audio, and video technologies you use to implement multimedia experiences in apps. Version: 1.1 Classification: Public Page 16 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The Core Services layer contains fundamental system services for apps. Key among these services are the Core Foundation and Foundation frameworks, which define the basic types that all apps use. This layer also contains individual technologies to support features such as location, iCloud, social media, and networking. This layer also implements data protection functions that allow apps that work with sensitive user data to take advantage of the built-in encryption available on some devices. When an app designates a specific file as protected, the system stores that file in an encrypted format. While the device is locked, the contents of the file are inaccessible to both the app and to any potential intruders. However, when the device is unlocked by the user, a decryption key is created to allow the app to access the file. Other levels of data protection are also available. The Core OS layer contains the low-level features that most other technologies are built upon. Even if an app does not use these technologies directly, they are most likely being used by other frameworks. And in situations where an app needs to explicitly deal with security or communicating with an external hardware accessory, it does so by using the frameworks in this layer. Security-related frameworks provided by this layer are: ● The Generic Security Services Framework, providing services as specified in Request for Comment (RFC) 2743 (Generic Security Service Application Program Interface Version 2, Update 1) and RFC 4401 (Pseudo Random Function) ● The Local Authentication Framework ● The Network Extension Framework, providing support for configuring and controlling VPN tunnels ● The Security Framework, providing services to manage and store certificates, public and private keys, and trust policies (this framework also provides the Common Crypto library for symmetric encryption and hash-based message authentication codes) ● The System Framework, providing the kernel environment, drivers, and low-level UNIX interfaces (the kernel manages the virtual memory system, threads, file system, network, and inter-process communication and is therefore responsible for separating apps from each other and controlling the use of low-level resources) The TOE is managed by an MDM solution that enables an enterprise to control and administer the TOE instances that are enrolled in the MDM solution. 1.5.2.1 Physical Boundaries The TOE's physical boundaries are those of the mobile devices. 1.5.2.2 Security Functions provided by the TOE The TOE provides the security functionality required by the protection profiles listed in Section 2 "CC Conformance Claim". 1.5.2.2.1 Cryptographic Support The TOE provides cryptographic services via the following cryptographic modules: ● Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] (User Space) ● Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1] (Kernel Space) ● Apple corecrypto Module v13.0 [Apple ARM, Secure Key Store, Hardware, SL2] (SKS) The Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] is a dynamically loadable library that resides within the TOE OS user space. The library is loaded into an app running in user space to provide cryptographic functions. Version: 1.1 Classification: Public Page 17 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Figure 2 below shows the logical boundary of the Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] within the TOE. Figure 2: Block Diagram of the Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] Note that the Wi-Fi chip performs the bulk AES cryptography for Wi-Fi communications. See Section 7.1.8.3 "Wireless LAN (WLAN)" for more detail. The functions listed below are used to implement the security protocols supported as well as for the encryption of data at rest: ● Random number generation ● Data encryption/decryption ● Signature generation/verification ● Message digest ● Message authentication ● Key derivation (PBKDF2) ● Key generation ● Key wrapping Version: 1.1 Classification: Public Page 18 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1] is a TOE OS kernel extension (KEXT) optimized for library use within the TOE OS kernel. Once the module is loaded into the kernel, its cryptographic functions are made available to TOE OS Kernel services only. Figure 3 below shows the logical boundary of the Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1] within the TOE. Figure 3: Block Diagram of the Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1] The functions listed below are used to implement the security protocols supported as well as for the encryption of data at rest: ● Random number generation ● Data encryption/decryption ● Signature generation/verification ● Message digest ● Message authentication ● Key generation ● Key wrapping Version: 1.1 Classification: Public Page 19 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The Apple corecrypto Module v13.0 [Apple ARM, Secure Key Store, Hardware, SL2] is a single-chip standalone hardware cryptographic module SoC/System-in-Package (SiP) running on a multi-chip device and provides services intended to protect data in transit and at rest. It contains both firmware and hardware cryptographic algorithm implementations. (The Secure Key Store is also known as the SKS.) The cryptographic services provided by the module are the following: ● Random number generation ● Data encryption/decryption ● Message digest ● Message authentication ● Key generation ● Key wrapping Figure 4 below shows the logical boundary of the Apple corecrypto Module v13.0 [Apple ARM, Secure Key Store, Hardware, SL2] within the TOE. Figure 4: Block Diagram of the Apple corecrypto Module v13.0 [Apple ARM, Secure Key Store, Hardware, SL2] In the figure above, HW is shorthand for hardware, POST is shorthand Power-On Self Tests, OTP-ROM is shorthand for One Time Programmable Read-Only Memory, and UID is shorthand for Unique ID. Note that the "Apps" in the Secure Enclave Processor OS (sepOS) are Apple-only developed apps. They are not user-created apps. Version: 1.1 Classification: Public Page 20 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 1.5.2.2.2 User Data Protection User data in files is protected using cryptographic functions, ensuring this data remains protected even if the device gets lost or is stolen. Critical data (like passcodes used by apps or application-defined cryptographic keys) can be stored in the keychain, which provides additional protection. Passcode protection and encryption ensure that data at rest remains protected even in the case of the device being lost or stolen. The Secure Enclave Processor (SEP), a separate CPU that executes a stand-alone operating system and has separate memory, provides protection for critical security data such as keys. Data is protected such that only the app that owns the data can access it. 1.5.2.2.3 Identification and Authentication The user must authenticate using a passcode or a biometric (fingerprint or face) to use the device except when performing the following: ● Accessing Medical ID information ● Answering calls ● Making emergency calls ● Using the cameras (unless their use is generally disallowed) ● Using the control center ● Using the flashlight ● Using the notification center The user is required to use the passcode authentication mechanism under the following conditions: ● Turn on or restart the device ● Press the Home button or swipe up to unlock your device (configurable) ● Update software ● Erase the device ● View or change passcode settings (including biometric enrollment) ● Install iPadOS Configuration Profiles The passcode can be configured for a minimum length, for dedicated passcode policies, and for a maximum lifetime. When entered, passcodes are obscured and the frequency of entering passcodes is limited as well as the number of consecutive failed attempts of entering the passcode. The TOE also enters a locked state after a (configurable) time of user inactivity and the user is required to either enter his passcode or use biometric authentication (fingerprint or face) to unlock the TOE. The TOE's biometric face authentication is known as Face ID and its fingerprint authentication is known as Touch ID. There are also multiple generations of these BAFs. External entities connecting to the TOE via a secure protocol (e.g., Transport Layer Security (TLS), Extensible Authentication Protocol Transport Layer Security (EAP-TLS), IPsec) can be authenticated using X.509 certificates. 1.5.2.2.4 Security Management The security functions listed in Table 15, Table 16, and Table 17 can be managed either by the user or by an authorized administrator through an MDM system. These tables identify the functions that can be managed and indicate if the management can be performed by the user, by the authorized administrator, or both. 1.5.2.2.5 Protection of the TSF Some of the functions the TOE implements to protect the TSF and TSF data are as follows: ● Protection of cryptographic keys—keys used for TOE internal key wrapping and for the protection of data at rest are not exportable. There are provisions for fast and secure wiping of key material. Version: 1.1 Classification: Public Page 21 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● Use of memory protection and processor states to separate apps and protect the TSF from unauthorized access to TSF resources—in addition, each device includes a separate system called the SEP which is the only system that can use the Root Encryption Key (REK). The SEP is a separate CPU that executes a stand-alone operating system and has separate memory. ● Digital signature protection of the TSF image—all updates to the TSF need to be digitally signed ● Software/firmware integrity self-test upon startup—the TOE will not go operational when this test fails ● Digital signature verification for apps ● Access to defined TSF data and TSF services only when the TOE is unlocked 1.5.2.2.6 TOE Access The TSF provides functions to lock the TOE upon request and after an administrator-configurable time of inactivity. Access to the TOE via a wireless network is controlled by user/administrator defined policy. 1.5.2.2.7 Trusted Path/Channels The TOE supports the use of the following cryptographic protocols that define a trusted channel between itself and another trusted IT product: ● IEEE 802.11-2012 ● IEEE 802.11ac-2013 (a.k.a. Wi-Fi 5) ● IEEE 802.11ax (a.k.a. Wi-Fi 6, Wi-Fi 6E) ● IEEE 802.1X ● EAP-TLS (v1.1, v1.2) ● TLS (v1.2) ● IPsec ● Bluetooth (v4.2, v5.0, v5.2, v5.3) 1.5.2.2.8 Audit The TOE provides the ability for responses to be sent from the MDM Agent to the MDM Server. These responses are configurable by the organization as per [DEV_MAN]☝ under Implementing Device Management » Deploying MDM Enrollment Profiles. 1.5.3 TOE Documentation For documents that contain multiple links, the first link points to the document (and language) used in the evaluation. The second link marked "International" points to the internationalized versions of the document. Table 1: TOE documents Reference Document name & location Location Mobile Device Administrator Guidance [CCGUIDE]☝ Apple iOS 16: iPhones and Apple iPadOS 16: iPads Common Criteria Configuration Guide https://www.niap-ccevs.org/MMO/Product/ st_vid11 350-agd.pdf [DEV_MAN]☝ Device Management https://developer.apple.com/documentation/ device management Mobile Device User Guidance [iPad_UG]☝ iPad User Guide iPadOS 16.3 (2022) The latest iPad User Guide: Version: 1.1 Classification: Public Page 22 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Reference Document name & location Location (This version is no longer available, but screenshots exist in [CCGUIDE]☝.) https://support.apple.com/guide/ipad/ welcome/ipad os [PASSCODE-Help]☝ Use a passcode with your iPhone, iPad or iPod touch https://support.apple.com/en-us/HT204060 International: https://support.apple.com/HT204060 [BLUETOOTH_HELP]☝ Pair a third-party Bluetooth accessory with your iPhone, iPad, or iPod touch https://support.apple.com/en-us/HT204091 International: https://support.apple.com/HT204091 Mobile Device Management [AConfig]☝ Apple Configurator 2 User Guide (online) https://support.apple.com/guide/apple- configurato r-2/welcome/mac [ABM_Guide]☝ Apple Business Manager User Guide https://support.apple.com/guide/apple- business-m anager/welcome/web [PM_Help]☝ Profile Manager User Guide for macOS Monterey https://support.apple.com/guide/profile- manager/w elcome/mac Supporting Documents [DeployRef]☝ Apple Platform Deployment https://support.apple.com/guide/deployment/ welco me/web [LOGGING]☝ Logging https://developer.apple.com/documentation/ os/log ging?language=objc [PROFS_LOGS]☝ Profiles and Logs https://developer.apple.com/bug-reporting/ profiles -and-logs/?platforms=ios [TRUST_STORE]☝ List of available trusted root certificates in iOS 16, iPadOS 16, macOS 13, tvOS 16, and watchOS 9 https://support.apple.com/en-us/HT213464 International: https://support.apple.com/HT213464 [MANAGE_CARDS]☝ Change or remove the payment cards that you use with Apple Pay https://support.apple.com/en-us/HT205583 International: https://support.apple.com/HT205583 [PAY_SETUP]☝ Set up Apple Pay https://support.apple.com/en-us/HT204506 International: https://support.apple.com/HT204506 [CONTENT-CACHING]☝ Set up content caching on Mac https://support.apple.com/en-euro/guide/mac-help/ mchl3b6c3720/13.0/mac/13.0 [APFS_DOC]☝ File system formats available in Disk Utility on Mac https://support.apple.com/en-euro/guide/disk-utility /dsku19ed921c/22.0/mac/13.0 App Developer Guidance [CKTSREF]☝ Certificate, Key, and Trust Services https://developer.apple.com/documentation/ securit y/certificate_key_and_trust_services Version: 1.1 Classification: Public Page 23 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Reference Document name & location Location [KEYCHAINPG]☝ Keychain Services https://developer.apple.com/documentation/ securit y/keychain_services [AP_SEC]☝ Apple Platform Security https://help.apple.com/pdf/security/en_US/ apple-pl atform-security-guide.pdf [APFS_DEV_DOC]☝ About Apple File System https://developer.apple.com/documentation/ founda tion/file_system/ about_apple_file_system [CertPinning]☝ Identity Pinning: How to configure server certificates for your app https://developer.apple.com/news/?id=g9ejcf8y Version: 1.1 Classification: Public Page 24 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 2 CC Conformance Claim This Security Target is CC Part 2 extended and CC Part 3 extended. Common Criteria [CC] version 3.1 revision 5 is the basis for this conformance claim. This Security Target claims exact conformance to the "PP-Configuration for Mobile Device Fundamentals, Biometric enrollment and verification – for unlocking the device, Bluetooth, MDM Agents, Virtual Private Network (VPN) Clients, and WLAN Clients, version 1.0 [PP-Config]☝ (CFG_MDF-BIO-BT-MDMA-VPNC-WLANC_V1.0). The PP configuration includes: ● [MDF]☝: Base-PP: Protection Profile for Mobile Device Fundamentals. Version 3.3 (PP_MDF_V3.3) as of 2022-09-12. ● [BIO]☝: PP-Module: collaborative PP-Module for Biometric enrolment and verification - for unlocking the device - [BIOPP-Module]. Version 1.1 (MOD_CPP_BIO_V1.1) as of 2022-09-12. ● [BT]☝: PP-Module for Bluetooth. Version 1.0 (MOD_BT_V1.0) as of 2021-04-15. ● [Agent]☝: PP-Module for MDM Agents. Version 1.0 (MOD_MDM_AGENT_V1.0) as of 2019-04-25. ● [VPNC]☝: PP-Module for Virtual Private Network (VPN) Clients. Version 2.4 (MOD_VPNC_V2.4) as of 2022-03-31. ● [WLANC]☝: PP-Module for WLAN Clients. Version 1.0 (MOD_WLANC_V1.0) as of 2022-03-31. In addition this ST claims conformance to the following functional package: ● [TLSPKG]☝: Functional Package for Transport Layer Security (TLS). Version 1.1 (PKG_TLS_V1.1) as of 2019-03-01. The following sections describes the use cases that each document covers and the technical decisions applied. 2.1 Base-PP: Protection Profile for Mobile Device Fundamentals [MDF] This document claims conformance to the following MDF Use Cases: ● [Use Case 3] Personally-owned device for personal and enterprise use: A personally-owned device that is used for both personal activities and enterprise data is commonly called Bring Your Own Device (BYOD). The device may be provisioned for access to enterprise resources after significant personal usage has occurred. ● [Use Case 4] Personally-owned device for personal and limited enterprise use: A personally- owned device that is used for both personal activities and enterprise data is commonly called Bring Your Own Device (BYOD). This device may be provisioned for limited access to enterprise resources such as enterprise email. Table 2 contains the NIAP Technical Decisions (TDs) for this protection profile at the time of the evaluation and a statement of applicability to the evaluation. Table 2: NIAP TDs for MDF NIAP TD TD description Applicable? Non-applicability rationale TD0724 Format corrections for FAU_GEN.1.1 in MDF 3.3 Yes TD0704 Part 3 (Extended) in CC Conformance Claims for MDF 3.3 Yes TD0689 RFC Update in FIA_X509_EXT.1 for MDF PP v3.3 Yes Version: 1.1 Classification: Public Page 25 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 NIAP TD TD description Applicable? Non-applicability rationale TD0677 Correction to Symbol in FCS_RBG_EXT.1 Test EA for MDF 3.3 Yes 2.2 PP-Module: collaborative PP-Module for Biometric enrolment and verification - for unlocking the device [BIO] This document claims conformance to the following Biometric Use Case: ● [Use Case 1] Biometric verification for unlocking the computer: This use case is applicable for any computers such as a desktop, laptop, tablet or smartphone that implement biometric enrolment and verification functionality. Table 3 contains the NIAP Technical Decisions (TDs) for this cPP-Module at the time of the evaluation and a statement of applicability to the evaluation. Table 3: NIAP TDs for BIO NIAP TD TD description Applicable? Non-applicability rationale TD0714 Minor discrepancy in posted Biometrics cPP- Module Yes TD0700 BIT Technical Decision for incorrect SFR reference in SD Yes 2.3 PP-Module for Bluetooth [BT] This document claims conformance to the following Bluetooth Use Case: ● [Use Case 2] Mobile Device: This use case is for a Bluetooth TOE that is part of a mobile operating system that runs on a mobile device. Specifically, the Bluetooth TOE is expected to be part of the mobile operating system itself and not a standalone third-party application that is acquired from the mobile vendor's application store. Table 4 contains the NIAP Technical Decisions (TDs) for this PP-Module at the time of the evaluation and a statement of applicability to the evaluation. Table 4: NIAP TDs for BT NIAP TD TD description Applicable? Non-applicability rationale TD0707 Formatting corrections for MOD_BT_V1.0 Yes TD0685 BT missing multiple SFR-to-Obj mappings Yes TD0671 Bluetooth PP-Module updated to allow for new PP and PP-Module Versions Yes TD0650 Conformance claim sections updated to allow for MOD_VPNC_V2.3 and 2.4 Yes TD0645 Bluetooth audit details Yes TD0640 Handling BT devices that do not support encryption Yes Version: 1.1 Classification: Public Page 26 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 NIAP TD TD description Applicable? Non-applicability rationale TD0600 Conformance claim sections updated to allow for MOD_VPNC_V2.3 No MOD_VPNC_V2.3 is not used by this ST. 2.4 PP-Module for MDM Agents [Agent] This document claims conformance to the following MDM Agents Use Cases: ● [Use Case 3] Personally owned device for personal and enterprise use: A personally owned device, which is used, for both personal activities and enterprise data is commonly called Bring Your Own Device (BYOD). The device may be provisioned for access to enterprise resources after significant personal usage has occurred. ● [Use Case 4] Personally owned device for personal and limited enterprise use: A personally owned device may also be given access to limited enterprise services such as enterprise email. Table 5 contains the NIAP Technical Decisions (TDs) for this PP-Module at the time of the evaluation and a statement of applicability to the evaluation. Table 5: NIAP TDs for Agent NIAP TD TD description Applicable? Non-applicability rationale TD0755 MDM-Agent Policy Authenticity Yes TD0673 MDM-Agent PP-Module updated to allow for new PP and PP-Module Versions Yes TD0660 Mislabeled SFRs in MDM Agent Auditable Events Table Yes TD0650 Conformance claim sections updated to allow for MOD_VPNC_V2.3 and 2.4 Yes TD0600 Conformance claim sections updated to allow for MOD_VPNC_V2.3 No MOD_VPNC_V2.3 is not used by this ST. TD0497 SFR Rationale, Consistency of SPD, and Implicitly Satisfied SFRs Yes 2.5 PP-Module for Virtual Private Network (VPN) Clients [VPNC] This document claims conformance to the following VPN Client Use Case: ● [Use Case 1] TOE to VPN Gateway: A VPN client allows users on the TOE platform to establish an encrypted IPsec tunnel across a less trusted, often unprotected, public network to a private network. Table 6 contains the NIAP Technical Decisions (TDs) for this PP-Module at the time of the evaluation and a statement of applicability to the evaluation. Table 6: NIAP TDs for VPNC NIAP TD TD description Applicable? Non-applicability rationale TD0753 MOD_VPNC FTP_DIT_EXT.1 Alignment for App PP 1.4 No App PP V1.4 is not used by this ST. Version: 1.1 Classification: Public Page 27 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 NIAP TD TD description Applicable? Non-applicability rationale TD0725 Correction to FCS_CKM_EXT.2/4 selections No TD changes only apply when using GPOS PP and App PP, not MDF PP. TD0711 FMT_SMF.1 direction when using MDF 3.3 Yes TD0697 Alignment with App PP V1.4 for required NIST curves in FCS_CKM.1/AK No App PP V1.4 is not used by this ST. TD0690 Missing EAs for FDP_VPN_EXT.1 Yes TD0672 VPN Client PP-Module updated to allow for new PP and PP-Module Versions Yes TD0662 Changes to Testing IPsec NAT Transversal and XAUTH in MOD_VPNC 2.4 Yes TD0647 Table 2 Applicability Yes 2.6 PP-Module for WLAN Clients [WLANC] Table 7 contains the NIAP Technical Decisions (TDs) for this PP-Module at the time of the evaluation and a statement of applicability to the evaluation. Table 7: NIAP TDs for WLANC NIAP TD TD description Applicable? Non-applicability rationale TD0710 WPA version restrictions Yes TD0703 Removal of FIA_X509_EXT.2/WLAN evaluation activities for revocation checking Yes TD0674 WLAN Client PP-Module updated to allow for new PP and PP-Module Versions Yes TD0667 Move Set Wireless Freq Band to Optional/ Objective Yes 2.7 Functional Package for Transport Layer Security (TLS) [TLSPKG] Table 8 contains the NIAP Technical Decisions (TDs) for this functional package at the time of the evaluation and a statement of applicability to the evaluation. Table 8: NIAP TDs for TLSPKG NIAP TD TD description Applicable? Non-applicability rationale TD0770 TLSS.2 connection with no client cert No The TOE does not contain TLS server functionality. TD0739 PKG_TLS_V1.1 has 2 different publication dates Yes TD0726 Corrections to (D)TLSS SFRs in TLS 1.1 FP No The TOE does not contain (D)TLS server functionality. Version: 1.1 Classification: Public Page 28 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 NIAP TD TD description Applicable? Non-applicability rationale TD0588 Session Resumption Support in TLS package No The TOE does not contain TLS server functionality. TD0513 CA Certificate loading Yes TD0499 Testing with pinned certificates Yes TD0469 Modification of test activity for FCS_TLSS_EXT.1.1 test 4.1 No The TOE does not contain TLS server functionality. TD0442 Updated TLS Ciphersuites for TLS Package Yes Version: 1.1 Classification: Public Page 29 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 3 Security Problem Definition The threats, assumptions, and organizational security policies (OSPs) are defined in the documents specified in Section 2 "CC Conformance Claim". They are reproduced here for the convenience of the reader. The following shorthand expressions are used to refer to the PP and PP-related documents used in this Security Target. Agent MDM Agents PP-Module BIO Biometric Enrolment and Verification cPP-Module BT Bluetooth PP-Module MDF Mobile Device Fundamentals PP TLSPKG TLS Functional Package VPNC VPN Client PP-Module WLANC WLAN Client PP-Module 3.1 Threat Environment 3.1.1 Threats countered by the TOE T.NETWORK_EAVESDROP PP Origin: MDF, BT An attacker is positioned on a wireless communications channel or elsewhere on the network infrastructure. Attackers may monitor and gain access to data exchanged between the Mobile Device and other endpoints. T.NETWORK_ATTACK PP Origin: MDF, BT An attacker is positioned on a wireless communications channel or elsewhere on the network infrastructure. Attackers may initiate communications with the Mobile Device or alter communications between the Mobile Device and other endpoints in order to compromise the Mobile Device. These attacks include malicious software update of any applications or system software on the device. These attacks also include malicious web pages or email attachments, which are usually delivered to devices over the network. T.PHYSICAL_ACCESS PP Origin: MDF An attacker, with physical access, may attempt to access user data on the Mobile Device including credentials. These physical access threats may involve attacks, which attempt to access the device through external hardware ports, impersonate the user authentication mechanisms, through its user interface, and also through direct and possibly destructive access to its storage media. Note: Defending against device re-use after physical compromise is out of scope for this Protection Profile. T.MALICIOUS_APP PP Origin: MDF Applications loaded onto the Mobile Device may include malicious or exploitable code. This code could be included intentionally or unknowingly by the developer, perhaps as part of a software library. Malicious apps may attempt to exfiltrate data to which they have access. They may also conduct Version: 1.1 Classification: Public Page 30 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 attacks against the platform's system software, which will provide them with additional privileges and the ability to conduct further malicious activities. Malicious applications may be able to control the device's sensors (GPS, camera, microphone) to gather intelligence about the user's surroundings even when those activities do not involve data resident or transmitted from the device. Flawed applications may give an attacker access to perform network-based or physical attacks that otherwise would have been prevented. T.PERSISTENT_PRESENCE PP Origin: MDF Persistent presence on a device by an attacker implies that the device has lost integrity and cannot regain it. The device has likely lost this integrity due to some other threat vector, yet the continued access by an attacker constitutes an on-going threat in itself. In this case, the device and its data may be controlled by an adversary as well as by its legitimate owner. T.BACKUP PP Origin: Agent An attacker may try to target backups of data or credentials and exfiltrate data. Since the backup is stored on either a personal computer or end user's backup repository, it's not likely the enterprise would detect compromise. T.Casual_Attack PP Origin: BIO An attacker may attempt to impersonate as a legitimate user without being enroled in the TOE. In order to perform the attack, the attacker only use one's own biometric characteristic (in form of a zero-effort impostor attempt). T.UNAUTHORIZED_ACCESS PP Origin: VPNC This PP-Module does not include requirements that can protect against an insider threat. Authorized users are not considered hostile or malicious and are trusted to follow appropriate guidance. Only authorized personnel should have access to the system or device that contains the IPsec VPN client. Therefore, the primary threat agents are the unauthorized entities that try to gain access to the protected network (in cases where tunnel mode is used) or to plaintext data that traverses the public network (regardless of whether transport mode or tunnel mode is used). The endpoint of the network communication can be both geographically and logically distant from the TOE, and can pass through a variety of other systems. These intermediate systems may be under the control of the adversary, and offer an opportunity for communications over the network to be compromised. Plaintext communication over the network may allow critical data (such as passwords, configuration settings, and user data) to be read or manipulated directly by a malicious user or process on intermediate systems, leading to a compromise of the TOE or to the secured environmental systems that the TOE is being used to facilitate communications with. IPsec can be used to provide protection for this communication; however, there are numerous options that can be implemented for the protocol to be compliant to the protocol specification listed in the RFC. Some of these options can have negative impacts on the security of the connection. For instance, using a weak encryption algorithm (even one that is allowed by the RFC, such as DES) can allow an adversary to read and even manipulate the data on the encrypted channel, thus circumventing countermeasures in place to Version: 1.1 Classification: Public Page 31 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 prevent such attacks. Further, if the protocol is implemented with little-used or non-standard options, it may be compliant with the protocol specification but will not be able to interact with other diverse equipment that is typically found in large enterprises. Even though the communication path is protected, there is a possibility that the IPsec peer could be tricked into thinking that a malicious third-party user or system is the TOE. For instance, a middleman could intercept a connection request to the TOE, and respond to the request as if it were the TOE. In a similar manner, the TOE could also be tricked into thinking that it is establishing communications with a legitimate IPsec peer when in fact it is not. An attacker could also mount a malicious man- in-the-middle-type of attack, in which an intermediate system is compromised, and the traffic is proxied, examined, and modified by this system. This attack can even be mounted via encrypted communication channels if appropriate countermeasures are not applied. These attacks are, in part, enabled by a malicious attacker capturing network traffic (for instance, an authentication session) and "playing back" that traffic in order to fool an endpoint into thinking it was communicating with a legitimate remote entity. PP Origin: WLANC A user may gain unauthorized access to the TOE data and TOE executable code. A malicious user, process, or external IT entity may masquerade as an authorized entity in order to gain unauthorized access to data or TOE resources. A malicious user, process, or external IT entity may misrepresent itself as the TOE to obtain identification and authentication data. T.TSF_CONFIGURATION PP Origin: VPNC Configuring VPN tunnels is a complex and time-consuming process, and prone to errors if the interface for doing so is not well-specified or well-behaved. The inability or failure of an ignorant or careless administrator to configure certain aspects of the interface may also lead to the mis- specification of the desired communications policy or use of cryptography that may be desired or required for a particular site. This may result in unintended weak or plaintext communications while the user thinks that their data are being protected. Other aspects of configuring the TOE or using its security mechanisms (for example, the update process) may also result in a reduction in the trustworthiness of the VPN client. T.USER_DATA_REUSE PP Origin: VPNC Data traversing the TOE could inadvertently be sent to a different user as a consequence of a poorly- designed TOE; since these data may be sensitive, this may cause a compromise that is unacceptable. The specific threat that must be addressed concerns user data that is retained by the TOE in the course of processing network traffic that could be inadvertently re-used in sending network traffic to a user other than that intended by the sender of the original network traffic. T.TSF_FAILURE PP Origin: VPNC, WLANC Security mechanisms of the TOE generally build up from a primitive set of mechanisms (e.g., memory management, privileged modes of process execution) to more complex sets of mechanisms. Failure of the primitive mechanisms could lead to a compromise in more complex mechanisms, resulting in a compromise of the TSF. T.UNDETECTED_ACTIONS PP Origin: WLANC Version: 1.1 Classification: Public Page 32 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Malicious remote users or external IT entities may take actions that adversely affect the security of the TOE. These actions may remain undetected and thus their effects cannot be effectively mitigated. 3.2 Assumptions A.CONFIG PP Origin: MDF It is assumed that the TOE's security functions are configured correctly in a manner to ensure that the TOE security policies will be enforced on all applicable network traffic flowing among the attached networks. A.NOTIFY PP Origin: MDF It is assumed that the mobile user will immediately notify the administrator if the Mobile Device is lost or stolen. A.PRECAUTION PP Origin: MDF It is assumed that the mobile user exercises precautions to reduce the risk of loss or theft of the Mobile Device. A.PROPER_USER PP Origin: MDF, Agent Mobile Device users are not willfully negligent or hostile, and use the device within compliance of a reasonable Enterprise security policy. A.CONNECTIVITY PP Origin: Agent The TOE relies on network connectivity to carry out its management activities. The TOE will robustly handle instances when connectivity is unavailable or unreliable. A.MOBILE_DEVICE_PLATFORM PP Origin: Agent The MDM Agent relies upon mobile platform and hardware evaluated against the MDF PP and assured to provide policy enforcement as well as cryptographic services and data protection. The mobile platform provides trusted updates and software integrity verification of the MDM Agent. A.PROPER_ADMIN PP Origin: Agent One or more competent, trusted personnel who are not careless, willfully negligent, or hostile, are assigned and authorized as the TOE Administrators, and do so using and abiding by guidance documentation. A.NO_TOE_BYPASS PP Origin: VPNC Information cannot flow onto the network to which the VPN client's host is connected without passing through the TOE. PP Origin: WLANC Version: 1.1 Classification: Public Page 33 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Information cannot flow between the wireless client and the internal wired network without passing through the TOE. A.PHYSICAL PP Origin: VPNC Physical security, commensurate with the value of the TOE and the data it contains, is assumed to be provided by the environment. A.TRUSTED_CONFIG PP Origin: VPNC Personnel configuring the TOE and its OE will follow the applicable security configuration guidance. A.TRUSTED_ADMIN PP Origin: WLANC TOE Administrators are trusted to follow and apply all administrator guidance in a trusted manner. 3.3 Organizational Security Policies P.ACCOUNTABILITY PP Origin: Agent Personnel operating the TOE shall be accountable for their actions within the TOE. P.ADMIN PP Origin: Agent The configuration of the mobile device security functions must adhere to the Enterprise security policy. P.DEVICE_ENROLL PP Origin: Agent A mobile device must be enrolled for a specific user by the administrator of the MDM prior to being used in the Enterprise network by the user. P.NOTIFY PP Origin: Agent The mobile user must immediately notify the administrator if a mobile device is lost or stolen so that the administrator may apply remediation actions via the MDM system. OSP.Enrol PP Origin: BIO The TOE shall enrol a user for biometric verification, only after successful authentication of a user. The TOE shall ensure that templates are of sufficient quality in order to meet the relevant error rates for biometric verification. OSP.Protection PP Origin: BIO The TOE in cooperation with its environment shall protect itself, its configuration and biometric data. OSP.Verification_Error PP Origin: BIO Version: 1.1 Classification: Public Page 34 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The TOE shall meet relevant criteria for its security relevant error rates for biometric verification. Version: 1.1 Classification: Public Page 35 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 4 Security Objectives The security objectives are defined in the documents specified in Section 2 "CC Conformance Claim". They are reproduced here for the convenience of the reader. 4.1 Objectives for the TOE O.PROTECTED_COMMS PP Origin: MDF, BT To address the network eavesdropping (T.NETWORK_EAVESDROP) and network attack (T.NETWORK_ATTACK) threats described in [MDF]☝ Section 3.1 Threats, concerning wireless transmission of Enterprise and user data and configuration data between the TOE and remote network entities, conformant TOEs will use a trusted communication path. The TOE must be capable of communicating using mutually authenticated TLS, EAP-TLS, HTTPS, 802.1X, and 802.11-2012. The TOE may optionally communicate using these standard protocols: IPsec, mutually-authenticated DTLS, or Bluetooth. These protocols are specified by RFCs that offer a variety of implementation choices. Requirements have been imposed on some of these choices (particularly those for cryptographic primitives) to provide interoperability and resistance to cryptographic attack. While conformant TOEs must support all of the choices specified in the ST including any optional SFRs defined in this PP, they may support additional algorithms and protocols. If such additional mechanisms are not evaluated, guidance must be given to the administrator to make clear the fact that they were not evaluated. O.STORAGE PP Origin: MDF To address the issue of loss of confidentiality of user data in the event of loss of a Mobile Device (T.PHYSICAL_ACCESS), conformant TOEs will use data-at-rest protection. The TOE will be capable of encrypting data and keys stored on the device and will prevent unauthorized access to encrypted data. PP Origin: Agent To address the issue of loss of confidentiality of user data in the event of loss of a mobile device (T.PHYSICAL_ACCESS), conformant TOEs will use platform provide key storage. The TOE is expected to protect its persistent secrets and private keys. O.CONFIG PP Origin: MDF To ensure a Mobile Device protects user and enterprise data that it may store or process, conformant TOEs will provide the capability to configure and apply security policies defined by the user and the Enterprise Administrator. If Enterprise security policies are configured these must be applied in precedence of user specified security policies. O.AUTH PP Origin: MDF To address the issue of loss of confidentiality of user data in the event of loss of a Mobile Device (T.PHYSICAL_ACCESS), users are required to enter an authentication factor to the device prior to accessing protected functionality and data. Some non-sensitive functionality (e.g., emergency Version: 1.1 Classification: Public Page 36 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 calling, text notification) can be accessed prior to entering the authentication factor. The device will automatically lock following a configured period of inactivity in an attempt to ensure authorization will be required in the event of the device being lost or stolen. Authentication of the endpoints of a trusted communication path is required for network access to ensure attacks are unable to establish unauthorized network connections to undermine the integrity of the device. Repeated attempts by a user to authorize to the TSF will be limited or throttled to enforce a delay between unsuccessful attempts. O.INTEGRITY PP Origin: MDF To ensure the integrity of the Mobile Device is maintained conformant TOEs will perform self-tests to ensure the integrity of critical functionality, software/firmware and data has been maintained. The user shall be notified of any failure of these self-tests. This will protect against the threat T.PERSISTENT T.PERSISTENT_PRESENCE. To address the issue of an application containing malicious or flawed code (T.MALICIOUS_APP), the integrity of downloaded updates to software/firmware will be verified prior to installation/execution of the object on the Mobile Device. In addition, the TOE will restrict applications to only have access to the system services and data they are permitted to interact with. The TOE will further protect against malicious applications from gaining access to data they are not authorized to access by randomizing the memory layout. O.PRIVACY PP Origin: MDF In a BYOD environment (use cases 3 and 4), a personally-owned mobile device is used for both personal activities and enterprise data. Enterprise management solutions may have the technical capability to monitor and enforce security policies on the device. However, the privacy of the personal activities and data must be ensured. In addition, since there are limited controls that the enterprise can enforce on the personal side, separation of personal and enterprise data is needed. This will protect against the T.MALICIOUS_APP and T.PERSISTENT_PRESENCE threats. O.ACCOUNTABILITY PP Origin: Agent The TOE must provide logging facilities, which record management actions undertaken by its administrators. O.APPLY_POLICY PP Origin: Agent The TOE must facilitate configuration and enforcement of enterprise security policies on mobile devices via interaction with the mobile OS and the MDM Server. This will include the initial enrollment of the device into management, through its entire lifecycle, including policy updates and its possible unenrollment from management services. O.DATA_PROTECTION_TRANSIT PP Origin: Agent Data exchanged between the MDM Server and the MDM Agent must be protected from being monitored, accessed, or altered. Version: 1.1 Classification: Public Page 37 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 O.BIO_Verification PP Origin: BIO The TOE shall provide a biometric verification mechanism to verify a user with an adequate reliability. The TOE shall meet the relevant criteria for its security relevant error rates for biometric verification. O.Enrol PP Origin: BIO The TOE shall implement the functionality to enrol a user for biometric verification and bind the template to the user only after successful authentication of the user using NBAF. The TOE shall create templates of sufficient quality in order to meet the relevant error rates for biometric verification. O.Protection PP Origin: BIO The TOE shall protect biometric data using the SEE provided by the TOE environment during runtime and storage. O.AUTHENTICATION PP Origin: VPNC To address the issues associated with unauthorized disclosure of information in transit, a compliant TOE's authentication ability (IPsec) will allow the TSF to establish VPN connectivity with a remote VPN gateway or peer and ensure that any such connection attempt is both authenticated and authorized. O.CRYPTOGRAPHIC_FUNCTIONS PP Origin: VPNC To address the issues associated with unauthorized disclosure of information in transit, a compliant TOE will implement cryptographic capabilities. These capabilities are intended to maintain confidentiality and allow for detection and modification of data that is transmitted outside of the TOE. PP Origin: WLANC The TOE will provide or use cryptographic functions (i.e., encryption/decryption and digital signature operations) to maintain the confidentiality and allow for detection of modification of data that are transmitted outside the TOE and its host environment. O.KNOWN_STATE PP Origin: VPNC The TOE will provide sufficient measures to ensure it is operating in a known state. At minimum this includes management functionality to allow the security functionality to be configured and self-test functionality that allows it to assert its own integrity. It may also include auditing functionality that can be used to determine the operational behavior of the TOE. O.NONDISCLOSURE PP Origin: VPNC To address the issues associated with unauthorized disclosure of information at rest, a compliant TOE will ensure that non-persistent data is purged when no longer needed. The TSF may also implement measures to protect against the disclosure of stored cryptographic keys and data through implementation of protected storage and secure erasure methods. The TOE may optionally also enforce split-tunneling prevention to ensure that data in transit cannot be disclosed inadvertently outside of the IPsec tunnel and prohibit transmission of packets through a connection until certain conditions are met. Version: 1.1 Classification: Public Page 38 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 O.AUTH_COMM PP Origin: WLANC The TOE will provide a means to ensure that it is communicating with an authorized access point and not some other entity pretending to be an authorized access point, and will provide assurance to the access point of its identity. O.SELF_TEST PP Origin: WLANC The TOE will provide the capability to test some subset of its security functionality to ensure it is operating properly. O.SYSTEM_MONITORING PP Origin: WLANC The TOE will provide the capability to generate audit data. O.TOE_ADMINISTRATION PP Origin: WLANC The TOE will provide mechanisms to allow administrators to be able to configure the TOE. O.WIRELESS_ACCESS_POINT_CONNECTION PP Origin: WLANC The TOE will provide the capability to restrict the wireless access points to which it will connect. 4.2 Objectives for the Operational Environment OE.CONFIG PP Origin: MDF TOE administrators will configure the Mobile Device security functions correctly to create the intended security policy. OE.NOTIFY PP Origin: MDF The Mobile User will immediately notify the administrator if the Mobile Device is lost or stolen. OE.PRECAUTION PP Origin: MDF The mobile device user exercises precautions to reduce the risk of loss or theft of the Mobile Device. OE.DATA_PROPER_USER PP Origin: MDF Administrators take measures to ensure that mobile device users are adequately vetted against malicious intent and are made aware of the expectations for appropriate use of the device. PP Origin: Agent Users of the mobile device are trained to securely use the mobile device and apply all guidance in a trusted manner. OE.DATA_PROPER_ADMIN PP Origin: Agent Version: 1.1 Classification: Public Page 39 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 TOE Administrators are trusted to follow and apply all administrator guidance in a trusted manner. OE.IT_ENTERPRISE PP Origin: Agent The Enterprise IT infrastructure provides security for a network that is available to the TOE and mobile devices that prevents unauthorized access. OE.MOBILE_DEVICE_PLATFORM PP Origin: Agent The MDM Agent relies upon the trustworthy mobile platform and hardware to provide policy enforcement as well as cryptographic services and data protection. The mobile platform provides trusted updates and software integrity verification of the MDM Agent. OE.WIRELESS_NETWORK PP Origin: Agent A wireless network will be available to the mobile devices. OE.Protection PP Origin: BIO The TOE environment shall provide the SEE to protect the TOE, the TOE configuration and biometric data during runtime and storage. OE.NO_TOE_BYPASS PP Origin: VPNC Information cannot flow onto the network to which the VPN client's host is connected without passing through the TOE. PP Origin: WLANC Information cannot flow between external and internal networks located in different enclaves without passing through the TOE. OE.PHYSICAL PP Origin: VPNC Physical security, commensurate with the value of the TOE and the data it contains, is assumed to be provided by the environment. OE.TRUSTED_CONFIG PP Origin: VPNC Personnel configuring the TOE and its OE will follow the applicable security configuration guidance. OE.TRUSTED_ADMIN PP Origin: WLANC TOE administrators are trusted to follow and apply all administrator guidance in a trusted manner. 4.3 Security Objectives Rationale The security objectives rationale is defined in the documents specified in Section 2 "CC Conformance Claim". Version: 1.1 Classification: Public Page 40 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 5 Extended Components Definition The extended components definitions are defined in the documents specified in Section 2 "CC Conformance Claim". Version: 1.1 Classification: Public Page 41 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6 Security Requirements 6.1 TOE Security Functional Requirements The table below summarizes the SFRs for the TOE and the operations performed on the components according to CC part 1. Operations in the SFRs use the following convention: ● Iterations (Iter.) are identified by appending a suffix to the original SFR. ● Refinements (Ref.) added to the text are shown in italic text, deletions are shown as strikethrough text. ● Assignments (Ass.) are shown in bold text. ● Selections (Sel.) are shown in bold text. Table 9: SFRs for the TOE Operations Security functional class Security functional requirement Base security functional component Source Iter. Ref. Ass. Sel. FAU_ALT_EXT.2 Agent Alerts Agent No No No Yes FAU_GEN.1 Audit Data Generation MDF Yes Yes Yes Yes FAU_GEN.1(2) Audit Data Generation FAU_GEN.1 Agent Yes Yes Yes Yes FAU_GEN.1/BT Audit Data Generation (Bluetooth) FAU_GEN.1 BT Yes Yes No Yes FAU_GEN.1/VPN Audit Data Generation FAU_GEN.1 VPNC Yes Yes No Yes FAU_GEN.1/WLAN Audit Data Generation (Wireless LAN) FAU_GEN.1 WLANC Yes Yes No Yes FAU_SAR.1 Audit Review MDF No No No No FAU_SEL.1(2) Security Audit Event Selection FAU_SEL.1 Agent No No Yes Yes FAU_STG.1 Audit Storage Protection MDF No No No No FAU - Security audit FAU_STG.4 Prevention of Audit Data Loss MDF No No No No FCS_CKM.1 Cryptographic Key Generation MDF Yes No No Yes FCS_CKM.1/VPN VPN Cryptographic Key Generation (IKE) FCS_CKM.1 VPNC Yes No No Yes FCS_CKM.1/WPA Cryptographic Key Generation (Symmetric Keys for WPA2/WPA3 Connections) FCS_CKM.1 WLANC Yes No No Yes FCS_CKM.2/UNLOCKED Cryptographic Key Establishment FCS_CKM.2 MDF Yes No No Yes FCS - Cryptographic support FCS_CKM.2/LOCKED Cryptographic Key Establishment FCS_CKM.2 MDF Yes No No Yes Version: 1.1 Classification: Public Page 42 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Operations Security functional class Security functional requirement Base security functional component Source Iter. Ref. Ass. Sel. FCS_CKM.2/WLAN Cryptographic Key Distribution (Group Temporal Key for WLAN) FCS_CKM.2 WLANC Yes Yes No No FCS_CKM_EXT.1 Cryptographic Key Support MDF No No No Yes FCS_CKM_EXT.2 Cryptographic Key Random Generation MDF No No No Yes FCS_CKM_EXT.3 Cryptographic Key Generation MDF No No No Yes FCS_CKM_EXT.4 Key Destruction MDF No No No Yes FCS_CKM_EXT.5 TSF Wipe MDF No No No Yes FCS_CKM_EXT.6 Salt Generation MDF No No No No FCS_CKM_EXT.7 Cryptographic Key Support (REK) MDF No No No No FCS_CKM_EXT.8 Bluetooth Key Generation BT No No Yes No FCS_COP.1/ENCRYPT Cryptographic Operation FCS_COP.1 MDF Yes No No Yes FCS_COP.1/HASH Cryptographic Operation FCS_COP.1 MDF Yes No No Yes FCS_COP.1/SIGN Cryptographic Operation FCS_COP.1 MDF Yes No No Yes FCS_COP.1/KEYHMAC Cryptographic Operation FCS_COP.1 MDF Yes No Yes Yes FCS_COP.1/CONDITION Cryptographic Operation FCS_COP.1 MDF Yes No Yes Yes FCS_HTTPS_EXT.1 HTTPS Protocol MDF No No No Yes FCS_IPSEC_EXT.1 IPsec VPNC No No Yes Yes FCS_IV_EXT.1 Initialization Vector Generation MDF No Yes No No FCS_RBG_EXT.1/HW Random Bit Generation (Hardware) FCS_RBG_EXT .1 MDF Yes Yes No Yes FCS_RBG_EXT.1/SW Random Bit Generation (Software) FCS_RBG_EXT .1 MDF Yes No No Yes FCS_SRV_EXT.1 Cryptographic Algorithm Services MDF No No No Yes FCS_STG_EXT.1 Cryptographic Key Storage MDF No No No Yes Version: 1.1 Classification: Public Page 43 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Operations Security functional class Security functional requirement Base security functional component Source Iter. Ref. Ass. Sel. FCS_STG_EXT.2 Encrypted Cryptographic Key Storage MDF No No Yes Yes FCS_STG_EXT.3 Integrity of Encrypted Key Storage MDF No No No Yes FCS_STG_EXT.4 Cryptographic Key Storage Agent No No No No FCS_TLS_EXT.1 TLS Protocol TLSPKG No No No Yes FCS_TLSC_EXT.1 TLS Client Protocol TLSPKG Yes No No Yes FCS_TLSC_EXT.1/WLAN TLS Client Protocol (EAP-TLS for WLAN) FCS_TLSC_EX T.1 WLANC Yes No No Yes FCS_TLSC_EXT.2 TLS Client Support for Mutual Authentication TLSPKG No No No No FCS_TLSC_EXT.4 TLS Client Support for Renegotiation TLSPKG No No No No FCS_TLSC_EXT.5 TLS Client Support for Supported Groups Extension TLSPKG No No No Yes FCS_WPA_EXT.1 Supported WPA Versions WLANC No No No Yes FDP_ACF_EXT.1 Access Control for System Services MDF No No No Yes FDP_ACF_EXT.2 Access Control for System Resources MDF No No No Yes FDP_DAR_EXT.1 Protected Data Encryption MDF No No No Yes FDP_DAR_EXT.2 Sensitive Data Encryption MDF No No No No FDP_IFC_EXT.1 Subset Information Flow Control MDF No No Yes Yes FDP_RIP.2 Full Residual Information Protection VPNC No No No Yes FDP_STG_EXT.1 User Data Storage MDF No No No No FDP_UPC_EXT.1/APPS Inter-TSF User Data Transfer Protection (Applications) FDP_UPC_EXT .1 MDF Yes No No Yes FDP_UPC_EXT.1/BLUETOOTH Inter- TSF User Data Transfer Protection (Bluetooth) FDP_UPC_EXT .1 MDF Yes No No Yes FDP - User data protection FDP_VPN_EXT.1 Split Tunnel Prevention VPNC No No No No Version: 1.1 Classification: Public Page 44 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Operations Security functional class Security functional requirement Base security functional component Source Iter. Ref. Ass. Sel. FIA_AFL_EXT.1 Authentication Failure Handling MDF No No Yes Yes FIA_BLT_EXT.1 Bluetooth User Authorization BT No No No No FIA_BLT_EXT.2 Bluetooth Mutual Authentication BT No No No No FIA_BLT_EXT.3 Rejection of Duplicate Bluetooth Connections BT No No No No FIA_BLT_EXT.4 Secure Simple Pairing BT No No No No FIA_BLT_EXT.6 Trusted Bluetooth Device User Authorization BT No No Yes No FIA_BLT_EXT.7 Untrusted Bluetooth Device User Authorization BT No No Yes No FIA_ENR_EXT.2 Agent Enrollment of Mobile Device into Management Agent No No No No FIA_MBE_EXT.1 Biometric enrolment BIO No No No No FIA_MBE_EXT.2 Quality of biometric templates for biometric enrolment BIO No No Yes Yes FIA_MBV_EXT.1 Biometric verification BIO No No Yes Yes FIA_MBV_EXT.2 Quality of biometric samples for biometric verification BIO No No Yes Yes FIA_PAE_EXT.1 Port Access Entity Authentication WLANC No No No No FIA_PMG_EXT.1 Password Management MDF No No Yes Yes FIA_TRT_EXT.1 Authentication Throttling MDF No No No Yes FIA_UAU.5 Multiple Authentication Mechanisms MDF No No Yes Yes FIA_UAU.6/CREDENTIAL Re- Authenticating (Credential Change) FIA_UAU.6 MDF Yes No No No FIA_UAU.6/LOCKED Re-Authenticating (TSF Lock) FIA_UAU.6 MDF Yes No Yes No FIA_UAU.7 Protected Authentication Feedback MDF No No No No FIA_UAU_EXT.1 Authentication for Cryptographic Operation MDF No No No Yes FIA - Identification and authentication FIA_UAU_EXT.2 Timing of Authentication MDF No No Yes Yes Version: 1.1 Classification: Public Page 45 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Operations Security functional class Security functional requirement Base security functional component Source Iter. Ref. Ass. Sel. FIA_X509_EXT.1 X.509 Validation of Certificates MDF Yes No No Yes FIA_X509_EXT.1/WLAN X.509 Certificate Validation FIA_X509_EXT .1 WLANC Yes No No No FIA_X509_EXT.2 X.509 Certificate Authentication MDF Yes No No Yes FIA_X509_EXT.2/WLAN X.509 Certificate Authentication (EAP-TLS for WLAN) FIA_X509_EXT .2 WLANC Yes No No No FIA_X509_EXT.3 Request Validation of Certificates MDF No No No No FIA_X509_EXT.6 Certificate Storage and Management WLANC No No No Yes FMT_MOF_EXT.1 Management of Security Functions Behavior MDF No Yes No No FMT_POL_EXT.2 Agent Trusted Policy Update Agent No No No No FMT_SMF.1 Specification of Management Functions MDF Yes Yes Yes Yes FMT_SMF.1/VPN Specification of Management Functions (VPN) FMT_SMF.1 VPNC Yes No No Yes FMT_SMF.1/WLAN Specification of Management Functions (WLAN Client) FMT_SMF.1 WLANC Yes Yes No Yes FMT_SMF_EXT.1/BT Specification of Management Functions FMT_SMF_EXT .1 BT No Yes Yes Yes FMT_SMF_EXT.2 Specification of Remediation Actions MDF No No No Yes FMT_SMF_EXT.4 Specification of Management Functions Agent No No No Yes FMT - Security management FMT_UNR_EXT.1 User Unenrollment Prevention Agent No No No Yes FPT_AEX_EXT.1 Application Address Space Layout Randomization MDF No No No No FPT_AEX_EXT.2 Memory Page Permissions MDF No No No No FPT_AEX_EXT.3 Stack Overflow Protection MDF No No No No FPT - Protection of the TSF FPT_AEX_EXT.4 Domain Isolation MDF No No No No Version: 1.1 Classification: Public Page 46 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Operations Security functional class Security functional requirement Base security functional component Source Iter. Ref. Ass. Sel. FPT_BDP_EXT.1 Biometric data processing BIO No No No No FPT_JTA_EXT.1 JTAG Disablement MDF No No No Yes FPT_KST_EXT.1 Key Storage MDF No Yes No No FPT_KST_EXT.2 No Key Transmission MDF No Yes No No FPT_KST_EXT.3 No Plaintext Key Export MDF No No No No FPT_NOT_EXT.1 Self-Test Notification MDF No No No Yes FPT_PBT_EXT.1 Protection of biometric template BIO No No No Yes FPT_STM.1 Reliable Time Stamps MDF No No No No FPT_TST_EXT.1 TSF Cryptographic Functionality Testing MDF Yes No No No FPT_TST_EXT.1/VPN TSF Self-Test FPT_TST_EXT.1 VPNC Yes No Yes Yes FPT_TST_EXT.2/PREKERNEL TSF Integrity Checking (Pre-Kernel) FPT_TST_EXT. 2 MDF Yes No No Yes FPT_TST_EXT.2/POSTKERNEL TSF Integrity Checking (Post-Kernel) FPT_TST_EXT. 2 MDF Yes No Yes Yes FPT_TST_EXT.3 TSF Integrity Testing MDF Yes No No No FPT_TST_EXT.3/WLAN TSF Cryptographic Functionality Testing (WLAN Client) FPT_TST_EXT. 3 WLANC Yes No No Yes FPT_TUD_EXT.1 TSF Version Query MDF No No No No FPT_TUD_EXT.2 TSF Update Verification MDF No No No Yes FPT_TUD_EXT.3 Application Signing MDF No No No No FPT_TUD_EXT.4 Trusted Update Verification MDF No No No No FPT_TUD_EXT.5 Application Verification MDF No No No Yes FPT_TUD_EXT.6 Trusted Update Verification MDF No No No No FTA_SSL_EXT.1 TSF- and User- initiated Locked State MDF No No Yes No FTA - TOE access FTA_TAB.1 Default TOE Access Banners MDF No No No No Version: 1.1 Classification: Public Page 47 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Operations Security functional class Security functional requirement Base security functional component Source Iter. Ref. Ass. Sel. FTA_WSE_EXT.1 Wireless Network Access WLANC No No No No FTP_BLT_EXT.1 Bluetooth Encryption BT No No No Yes FTP_BLT_EXT.2 Persistence of Bluetooth Encryption BT No No No Yes FTP_BLT_EXT.3/BR Bluetooth Encryption Parameters (BR/EDR) FTP_BLT_EXT. 3 BT Yes No Yes No FTP_BLT_EXT.3/LE Bluetooth Encryption Parameters (LE) FTP_BLT_EXT. 3 BT Yes No Yes No FTP_ITC.1/WLAN Trusted Channel Communication (Wireless LAN) FTP_ITC.1 WLANC No No No No FTP_ITC_EXT.1 Trusted Channel Communication MDF Yes No No Yes FTP_ITC_EXT.1(2) Trusted Channel Communication FTP_ITC_EXT.1 Agent Yes No No Yes FTP - Trusted path/channels FTP_TRP.1(2) Trusted Path (for Enrollment) Agent No No No Yes 6.1.1 Security audit (FAU) 6.1.1.1 FAU_ALT_EXT.2 Agent Alerts PP Origin: Agent FAU_ALT_EXT.2.1 The MDM Agent shall provide an alert via the trusted channel to the MDM Server in the event of any of the following audit events: ● successful application of policies to a mobile device, ● receiving periodic reachability events, ● no other events. FAU_ALT_EXT.2.2 The MDM Agent shall queue alerts if the trusted channel is not available. 6.1.1.2 FAU_GEN.1 Audit Data Generation PP Origin: MDF Applied TDs: TD0724 FAU_GEN.1.1 The TSF shall be able to generate an audit record of the following auditable events: 1. Start-up and shutdown of the audit functions 2. All auditable events for the not selected level of audit Version: 1.1 Classification: Public Page 48 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 3. All administrative actions 4. Start-up and shutdown of the OS 5. Insertion or removal of removable media 6. Specifically defined auditable events in Table 2 Table 10 7. no additional auditable events Table 10: Mandatory Auditable Events (MDF) Requirement Auditable Events Additional Audit Record Contents FAU_GEN.1 No events specified N/A FAU_SAR.1 No events specified N/A FAU_STG.1 No events specified N/A FAU_STG.4 No events specified N/A FCS_CKM.1 None No additional information FCS_CKM.2/UNLOCKED No events specified N/A FCS_CKM.2/LOCKED No events specified N/A FCS_CKM_EXT.1 None No additional information FCS_CKM_EXT.2 No events specified N/A FCS_CKM_EXT.3 No events specified N/A FCS_CKM_EXT.4 No events specified N/A FCS_CKM_EXT.5 None No additional information FCS_CKM_EXT.6 No events specified N/A FCS_COP.1/ENCRYPT No events specified N/A FCS_COP.1/HASH No events specified N/A FCS_COP.1/SIGN No events specified N/A FCS_COP.1/KEYHMAC No events specified N/A FCS_COP.1/CONDITION No events specified N/A FCS_IV_EXT.1 No events specified N/A FCS_SRV_EXT.1 No events specified N/A Import or destruction of key Identity of key, role and identity of requester FCS_STG_EXT.1 None Identity of key, role and identity of requester FCS_STG_EXT.2 No events specified N/A FCS_STG_EXT.3 Failure to verify integrity of stored key Identity of key being verified FDP_ACF_EXT.1 No events specified N/A Version: 1.1 Classification: Public Page 49 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Requirement Auditable Events Additional Audit Record Contents FDP_DAR_EXT.1 Failure to encrypt/decrypt data No additional information FDP_DAR_EXT.2 Failure to encrypt/decrypt data No additional information FDP_IFC_EXT.1 No events specified N/A FDP_STG_EXT.1 Addition or removal of certificate from Trust Anchor Database Subject name of certificate FIA_PMG_EXT.1 No events specified N/A FIA_TRT_EXT.1 No events specified N/A FIA_UAU.5 No events specified N/A FIA_UAU.7 No events specified N/A FIA_UAU_EXT.1 No events specified N/A FIA_X509_EXT.1 Failure to validate X.509v3 certificate Reason for failure of validation FIA_X509_EXT.2 No events specified N/A FMT_MOF_EXT.1 No events specified N/A FPT_AEX_EXT.1 No events specified N/A FPT_AEX_EXT.2 No events specified N/A FPT_AEX_EXT.3 No events specified N/A FPT_JTA_EXT.1 No events specified N/A FPT_KST_EXT.1 No events specified N/A FPT_KST_EXT.2 No events specified N/A FPT_KST_EXT.3 No events specified N/A FPT_NOT_EXT.1 None No additional information FPT_STM.1 No events specified N/A Initiation of self-test No additional information FPT_TST_EXT.1 Failure of self-test No additional information Start-up of TOE No additional information FPT_TST_EXT.2/PREKERNEL None No additional information FPT_TUD_EXT.1 No events specified N/A FTA_SSL_EXT.1 No events specified N/A FTA_TAB.1 No events specified N/A FAU_GEN.1.2 The TSF shall record within each audit record at least the following information: Version: 1.1 Classification: Public Page 50 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 1. Date and time of the event 2. Type of event 3. Subject identity 4. The outcome (success or failure) of the event 5. Additional information in Table 2 Table 10 6. no additional information 6.1.1.3 FAU_GEN.1(2) Audit Data Generation PP Origin: Agent Applied TDs: TD0660 FAU_GEN.1.1(2) The MDM Agent shall implement functionality to generate an MDM Agent audit record of the following auditable events: a. Startup and shutdown of the MDM Agent; b. All auditable events for not specified level of audit; and c. MDM policy updated, any modification commanded by the MDM Server, specifically defined auditable events listed in Table 1 Table 11, and no other events. Table 11: Auditable Events (Agent) Requirement Auditable Events Additional Audit Record Contents FAU_ALT_EXT.2 Success/failure of sending alert. No additional information. FAU_GEN.1(2) None. N/A FAU_SEL.1(2) All modifications to the audit configuration that occur while the audit collection functions are operating. No additional information. FCS_STG_EXT.4, FCS_STG_EXT.1(2) None. Failure to establish a TLS session. Reason for failure. Failure to verify presented identifier. Presented identifier and reference identifier. FCS_TLSC_EXT.1 Establishment/termination of a TLS session. Non-TOE endpoint of connection. FIA_ENR_EXT.2 Enrollment in management. Reference identifier of MDM Server. FMT_POL_EXT.2 Failure of policy validation. Reason for failure of validation. FMT_SMF_EXT.4 Outcome (Success/failure) of function. No additional information. FMT_UNR_EXT.1.1 Attempt to unenroll No additional information. Version: 1.1 Classification: Public Page 51 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Requirement Auditable Events Additional Audit Record Contents FTP_ITC_EXT.1(2) Initiation and termination of trusted channel. Trusted channel protocol. Non- TOE endpoint of connection. FAU_GEN.1.2(2) The TSF shall record within each MDM Agent audit record at least the following information: a. Date and time of the event, type of event, subject identity, (if relevant) the outcome (success or failure) of the event, and additional information in Table 1 Table 11; and b. For each audit event type, based on the auditable event definitions of the functional components included in the PP-Module/ST, no other audit relevant information. 6.1.1.4 FAU_GEN.1/BT Audit Data Generation (Bluetooth) PP Origin: BT Applied TDs: TD0645 TD0707 FAU_GEN.1.1/BT The TSF shall be able to generate an audit record of the following auditable events: a. Start-up and shutdown of the audit functions b. All auditable events for the not specified level of audit c. Specifically defined auditable events in the Auditable Events table (Table 12). Table 12: Auditable Events (BT) Requirement Auditable Events Additional Audit Record Contents FCS_CKM_EXT.8 None. Failed user authorization of Bluetooth device. User authorization decision (e.g., user rejected connection, incorrect pin entry). FIA_BLT_EXT.1 Failed user authorization for local Bluetooth Service. Complete BD_ADDR and name of device. Bluetooth profile. Identity of local service with service ID. Initiation of Bluetooth connection. Complete BD_ADDR and name of device. FIA_BLT_EXT.2 Failure of Bluetooth connection. Reason for failure. FIA_BLT_EXT.3 (optional) Duplicate connection attempt. [selection: complete, last [assignment: integer greater than or equal to 2] octets of the] BD_ADDR of connection attempt. FIA_BLT_EXT.4 None. FIA_BLT_EXT.5 (if claimed) None. Version: 1.1 Classification: Public Page 52 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Requirement Auditable Events Additional Audit Record Contents FIA_BLT_EXT.6 None. FIA_BLT_EXT.7 None. FTP_BLT_EXT.1 None. FTP_BLT_EXT.2 None. FTP_BLT_EXT.3/BR None. FTP_BLT_EXT.3/LE (if claimed) None. Application Note: FIA_BLT_EXT.3 is excluded from Table 12 because the rejection is performed at the HCI layer. FIA_BLT_EXT.5 is not claimed. FAU_GEN.1.2/BT The TSF shall record within each audit record at least the following information: a. Date and time of the event b. Type of event c. Subject identity d. The outcome (success or failure) of the event e. For each audit event type, based on the auditable event definitions of the functional components included in the PP/ST, Additional information in the Auditable Events table (Table 12). 6.1.1.5 FAU_GEN.1/VPN Audit Data Generation FAU_GEN.1.1/VPN Applied TDs: TD0647 The TSF and TOE platform shall be able to generate an audit record of the following auditable events: a) Start-up and shutdown of the audit functions; b) All auditable events for the not specified level of audit; c) All administrative actions; d) Specifically defined auditable events listed in the Auditable Events tables (Table 13). Table 13: Auditable Events (VPN) Requirement Auditable Events Additional Audit Record Contents FAU_GEN.1/VPN No events specified. N/A FCS_CKM.1/VPN No events specified. N/A FCS_IPSEC_EXT.1 Decisions to DISCARD or BYPASS network packets processed by the TOE. Presumed identity of source subject. The entry in the SPD that applied to the decision. Version: 1.1 Classification: Public Page 53 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Requirement Auditable Events Additional Audit Record Contents FCS_IPSEC_EXT.1 Failure to establish an IPsec SA. Identity of destination subject. Reason for failure. FCS_IPSEC_EXT.1 Establishment/Termination of an IPsec SA. Identity of destination subject. Transport layer protocol, if applicable. Source subject service identifier, if applicable. Non- TOE endpoint of connection (IP address) for both successes and failures. FDP_RIP.2 No events specified. N/A FDP_VPN_EXT.1 No events specified. N/A FMT_SMF.1/VPN Success or failure of management function. No additional information. FPT_TST_EXT.1/VPN No events specified. N/A FAU_GEN.1.2/VPN The TSF and TOE platform shall record within each audit record at least the following information: a) Date and time of the event, type of event, subject identity, and the outcome (success or failure) of the event; and b) For each audit event type, based on the auditable event definitions of the functional components included in the PP-Module/ST, information specified in column three of Auditable Events table. 6.1.1.6 FAU_GEN.1/WLAN Audit Data Generation (Wireless LAN) PP Origin: WLANC FAU_GEN.1.1/WLAN The TSF shall implement functionality to generate an audit record of the following auditable events: a. Startup and shutdown of the audit functions; b. All auditable events for not specified level of audit; and c. All auditable events for mandatory SFRs specified in Table 2 and selected SFRs in Table 5 Table 14. Table 14: Auditable Events (WLAN) Requirement Auditable Events Additional Audit Record Contents FAU_GEN.1/WLAN No events specified. N/A FCS_CKM.1/WPA No events specified. N/A FCS_CKM.2/WLAN No events specified. N/A FCS_TLSC_EXT.1/WLAN Failure to establish an EAP-TLS session. Reason for failure. Non-TOE endpoint of connection. Version: 1.1 Classification: Public Page 54 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Requirement Auditable Events Additional Audit Record Contents Establishment/termination of an EAP-TLS session. Non-TOE endpoint of connection. FCS_WPA_EXT.1 No events specified. N/A FIA_PAE_EXT.1 No events specified. N/A FIA_X509_EXT.1/WLAN Failure to validate X.509v3 certificate. Reason for failure of validation. FIA_X509_EXT.2/WLAN No events specified. N/A Attempts to load certificates. None. FIA_X509_EXT.6 Attempts to revoke certificates. None. FMT_SMF.1/WLAN No events specified. N/A Execution of this set of TSF self- tests. None. FPT_TST_EXT.3/WLAN None. None. FTA_WSE_EXT.1 All attempts to connect to access points. For each access point record the Complete SSID and MAC of the MAC Address. Success and failures (including reason for failure). FTP_ITC.1/WLAN All attempts to establish a trusted channel. Identification of the non-TOE endpoint of the channel. FAU_GEN.1.2/WLAN The TSF shall record within each audit record at least the following information: a. Date and time of the event, type of event, subject identity, (if relevant) the outcome (success or failure) of the event; and b. For each audit event type, based on the auditable event definitions of the functional components included in the PP-Module/ST, Additional Audit Record Contents as specified in Table 2 and Table 5 Table 14. 6.1.1.7 FAU_SAR.1 Audit Review PP Origin: MDF FAU_SAR.1.1 The TSF shall provide the administrator with the capability to read all audited events and record contents from the audit records. FAU_SAR.1.2 The TSF shall provide the audit records in a manner suitable for the user to interpret the information. 6.1.1.8 FAU_SEL.1(2) Security Audit Event Selection PP Origin: Agent Version: 1.1 Classification: Public Page 55 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FAU_SEL.1.1(2) The TSF shall implement functionality to select the set of events to be audited from the set of all auditable events based on the following attributes: a) event type b) success of auditable security events, failure of auditable security events, no other attributes. 6.1.1.9 FAU_STG.1 Audit Storage Protection PP Origin: MDF FAU_STG.1.1 The TSF shall protect the stored audit records in the audit trail from unauthorized deletion. FAU_STG.1.2 The TSF shall be able to prevent unauthorized modifications to the stored audit records in the audit trail. 6.1.1.10 FAU_STG.4 Prevention of Audit Data Loss PP Origin: MDF FAU_STG.4.1 The TSF shall overwrite the oldest stored audit records if the audit trail is full. 6.1.2 Cryptographic support (FCS) 6.1.2.1 FCS_CKM.1 Cryptographic Key Generation PP Origin: MDF, VPNC FCS_CKM.1.1 The TSF shall generate asymmetric cryptographic keys in accordance with a specified cryptographic key generation algorithm ● ECC schemes using ❍ "NIST curves" P-384 and P-256 that meet the following: FIPS PUB 186-4, "Digital Signature Standard (DSS)", Appendix B.4 ❍ Curve25519 schemes that meet the following: RFC 7748 ● FFC schemes using ❍ Diffie-Hellman group 14 that meet the following: RFC3526 ❍ "safe-prime" groups that meet the following: 'NIST Special Publication 800-56A Revision 3, "Recommendation for Pair-Wise Key Establishment Schemes Using Discrete Logarithm Cryptography"' 6.1.2.2 FCS_CKM.1/VPN VPN Cryptographic Key Generation (IKE) PP Origin: VPNC Version: 1.1 Classification: Public Page 56 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FCS_CKM.1.1/VPN The TSF shall implement functionality to generate asymmetric cryptographic keys used for IKE peer authentication in accordance with: ● FIPS PUB 186-4, "Digital Signature Standard (DSS)," Appendix B.4 for ECDSA schemes and implementing "NIST curves," P-256, P-384 and no other curves and specified cryptographic key sizes equivalent to, or greater than, a symmetric key strength of 112 bits. 6.1.2.3 FCS_CKM.1/WPA Cryptographic Key Generation (Symmetric Keys for WPA2/ WPA3 Connections) PP Origin: WLANC FCS_CKM.1.1/WPA The TSF shall generate symmetric cryptographic keys in accordance with a specified cryptographic key generation algorithm PRF-384 and PRF-704 (as defined in IEEE 802.11-2012) and specified key sizes 256 bits and 128 bits using a Random Bit Generator as specified in FCS_RBG_EXT.1. 6.1.2.4 FCS_CKM.2/UNLOCKED Cryptographic Key Establishment PP Origin: MDF, VPNC FCS_CKM.2.1/UNLOCKED The TSF shall perform cryptographic key establishment in accordance with a specified cryptographic key establishment method ● RSA-based key establishment schemes that meet the following ❍ NIST Special Publication 800-56B, "Recommendation for Pair-Wise Key Establishment Schemes Using Integer Factorization Cryptography" ● Elliptic curve-based key establishment schemes that meet the following: NIST Special Publication 800-56A Revision 3, "Recommendation for Pair-Wise Key Establishment Schemes Using Discrete Logarithm Cryptography" ● Finite field-based key establishment schemes that meet the following: NIST Special Publication 800-56A Revision 3, "Recommendation for Pair-Wise Key Establishment Schemes Using Discrete Logarithm Cryptography" ● Key establishment schemes using Diffie-Hellman group 14 that meets the following: RFC 3526, Section 3 6.1.2.5 FCS_CKM.2/LOCKED Cryptographic Key Establishment PP Origin: MDF FCS_CKM.2.1/LOCKED The TSF shall perform cryptographic key establishment in accordance with a specified cryptographic key establishment method: ● Elliptic curve-based key establishment schemes that meet the following: ❍ RFC 7748, "Elliptic Curves for Security" Version: 1.1 Classification: Public Page 57 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 for the purposes of encrypting sensitive data received while the device is locked. 6.1.2.6 FCS_CKM.2/WLAN Cryptographic Key Distribution (Group Temporal Key for WLAN) PP Origin: WLANC FCS_CKM.2.1/WLAN The TSF shall decrypt Group Temporal Key in accordance with a specified cryptographic key distribution method AES Key Wrap (as defined in RFC 3394) in an EAPOL-Key frame (as defined in IEEE 802.11-2012) for the packet format and timing considerations and does not expose the cryptographic keys. 6.1.2.7 FCS_CKM_EXT.1 Cryptographic Key Support PP Origin: MDF FCS_CKM_EXT.1.1 The TSF shall support mutable hardware REKs with a symmetric key of strength 256 bits. FCS_CKM_EXT.1.2 Each REK shall be hardware-isolated from the OS on the TSF in runtime. FCS_CKM_EXT.1.3 Each REK shall be generated by an RBG in accordance with FCS_RBG_EXT.1. 6.1.2.8 FCS_CKM_EXT.2 Cryptographic Key Random Generation PP Origin: MDF FCS_CKM_EXT.2.1 All DEKs shall be randomly generated with entropy corresponding to the security strength of AES key sizes of 256 bits. 6.1.2.9 FCS_CKM_EXT.3 Cryptographic Key Generation PP Origin: MDF FCS_CKM_EXT.3.1 The TSF shall use symmetric KEKs of 128-bit, 256-bit security strength corresponding to at least the security strength of the keys encrypted by the KEK. FCS_CKM_EXT.3.2 The TSF shall generate all KEKs using one of the following methods: ● Derive the KEK from a Password Authentication Factor according to FCS_COP.1.1/CONDITION and ● Generate the KEK using an RBG that meets this profile (as specified in FCS_RBG_EXT.1) Version: 1.1 Classification: Public Page 58 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● Combine the KEK from other KEKs in a way that preserves the effective entropy of each factor by ❍ concatenating the keys and using a KDF (as described in SP 800-56C) ❍ encrypting one key with another. 6.1.2.10 FCS_CKM_EXT.4 Key Destruction PP Origin: MDF FCS_CKM_EXT.4.1 The TSF shall destroy cryptographic keys in accordance with the specified cryptographic key destruction methods: ● By clearing the KEK encrypting the target key ● In accordance with the following rules ❍ For volatile memory, the destruction shall be executed by a single direct overwrite consisting of zeros. ❍ For non-volatile EEPROM, the destruction shall be executed by a single direct overwrite consisting of a pseudo random pattern using the TSF's RBG (as specified in FCS_RBG_EXT.1), followed by a read-verify. ❍ For non-volatile flash memory, that is not wear-leveled, the destruction shall be executed by a block erase that erases the reference to memory that stores data as well as the data itself. ❍ For non-volatile flash memory, that is wear-leveled, the destruction shall be executed by a block erase. ❍ For non-volatile memory other than EEPROM and flash, the destruction shall be executed by a single direct overwrite with a random pattern that is changed before each write. FCS_CKM_EXT.4.2 The TSF shall destroy all plaintext keying material and critical security parameters when no longer needed. 6.1.2.11 FCS_CKM_EXT.5 TSF Wipe PP Origin: MDF FCS_CKM_EXT.5.1 The TSF shall wipe all protected data by ● Cryptographically erasing the encrypted DEKs or the KEKs in non-volatile memory by following the requirements in FCS_CKM_EXT.4.1. FCS_CKM_EXT.5.2 The TSF shall perform a power cycle on conclusion of the wipe procedure. 6.1.2.12 FCS_CKM_EXT.6 Salt Generation PP Origin: MDF Version: 1.1 Classification: Public Page 59 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FCS_CKM_EXT.6.1 The TSF shall generate all salts using an RBG that meets FCS_RBG_EXT.1. Application Note: The salt is generated using FCS_RBG_EXT.1/HW. 6.1.2.13 FCS_CKM_EXT.7 Cryptographic Key Support (REK) PP Origin: MDF FCS_CKM_EXT.7.1 A REK shall not be able to be read from or exported from the hardware. 6.1.2.14 FCS_CKM_EXT.8 Bluetooth Key Generation PP Origin: BT FCS_CKM_EXT.8.1 The TSF shall generate public/private ECDH key pairs every new connection attempt. 6.1.2.15 FCS_COP.1/ENCRYPT Cryptographic Operation PP Origin: MDF, VPNC FCS_COP.1.1/ENCRYPT The TSF shall perform encryption/decryption in accordance with a specified cryptographic algorithm: ● AES-CBC (as defined in FIPS PUB 197, and NIST SP 800-38A) mode ● AES-CCMP (as defined in FIPS PUB 197, NIST SP 800-38C and IEEE 802.11-2012), and ● AES Key Wrap (KW) (as defined in NIST SP 800-38F) ● AES-GCM (as defined in NIST SP 800-38D) ● AES-CCM (as defined in NIST SP 800-38C) ● AES-XTS (as defined in NIST SP 800-38E) mode ● AES-CCMP-256 (as defined in NIST SP800-38C and IEEE 802.11ac-2013) ● AES-GCMP-256 (as defined in NIST SP800-38D and IEEE 802.11ac-2013) and cryptographic key sizes 128-bit key sizes and 256-bit key sizes . 6.1.2.16 FCS_COP.1/HASH Cryptographic Operation PP Origin: MDF FCS_COP.1.1/HASH The TSF shall perform cryptographic hashing in accordance with a specified cryptographic algorithm SHA-1 and SHA-256, SHA-384, SHA-512 and message digest sizes 160 and 256, 384, 512 bits that meet the following: FIPS Pub 180-4. 6.1.2.17 FCS_COP.1/SIGN Cryptographic Operation PP Origin: MDF Version: 1.1 Classification: Public Page 60 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FCS_COP.1.1/SIGN The TSF shall perform cryptographic signature services (generation and verification) in accordance with a specified cryptographic algorithm ● RSA schemes using cryptographic key sizes of 2048-bit or greater that meet the following: FIPS PUB 186-4, "Digital Signature Standard (DSS)", Section 4 ● ECDSA schemes using "NIST curves" P-384 and P-256, P-521 that meet the following: FIPS PUB 186-4, "Digital Signature Standard (DSS)", Section 5 6.1.2.18 FCS_COP.1/KEYHMAC Cryptographic Operation PP Origin: MDF FCS_COP.1.1/KEYHMAC The TSF shall perform keyed-hash message authentication in accordance with a specified cryptographic algorithm HMAC-SHA-1 and HMAC-SHA-256, HMAC-SHA-384, HMAC-SHA-512 and cryptographic key sizes greater than or equal to 112 bits and message digest sizes 160 and 256, 384, 512 bits that meet the following: FIPS Pub 198-1, "The Keyed-Hash Message Authentication Code", and FIPS Pub 180-4, "Secure Hash Standard". 6.1.2.19 FCS_COP.1/CONDITION Cryptographic Operation PP Origin: MDF FCS_COP.1.1/CONDITION The TSF shall perform conditioning in accordance with a specified cryptographic algorithm HMAC-SHA-256 using a salt, and PBKDF2 with one iterations, repetitive AES-CBC-256 encryption with a duration between 100 and 150 milliseconds (50,000 repetition minimum) and output cryptographic key sizes 256 that meet the following: NIST SP 800-132. Application Note: The number of repetitions is calibrated to take at least 100 to 150 milliseconds with a minimum of 50,000 repetitions. The number of repetitions may be greater in some devices. 6.1.2.20 FCS_HTTPS_EXT.1 HTTPS Protocol PP Origin: MDF FCS_HTTPS_EXT.1.1 The TSF shall implement the HTTPS protocol that complies with RFC 2818. FCS_HTTPS_EXT.1.2 The TSF shall implement HTTPS using TLS as defined in the Functional Package for Transport Layer Security (TLS), version 1.1. FCS_HTTPS_EXT.1.3 The TSF shall notify the application and request application authorization to establish the connection if the peer certificate is deemed invalid. Version: 1.1 Classification: Public Page 61 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6.1.2.21 FCS_IPSEC_EXT.1 IPsec PP Origin: VPNC FCS_IPSEC_EXT.1.1 The TSF shall implement the IPsec architecture as specified in RFC 4301. FCS_IPSEC_EXT.1.2 The TSF shall implement tunnel mode. FCS_IPSEC_EXT.1.3 The TSF shall have a nominal, final entry in the SPD that matches anything that is otherwise unmatched, and discards it. FCS_IPSEC_EXT.1.4 The TSF shall implement the IPsec protocol ESP as defined by RFC 4303 using the cryptographic algorithms AES-GCM-128, AES-GCM-256 as specified in RFC 4106, AES-CBC-128, AES-CBC-256 (both specified by RFC 3602) together with a Secure Hash Algorithm (SHA)-based HMAC. FCS_IPSEC_EXT.1.5 The TSF shall implement the protocol: ● IKEv2 as defined in RFC 7296 (with mandatory support for NAT traversal as specified in section 2.23), RFC 8784, RFC 8247, and no other RFCs for hash functions. FCS_IPSEC_EXT.1.6 The TSF shall ensure the encrypted payload in the IKEv2 protocol uses the cryptographic algorithms AES-CBC-128, AES-CBC-256 as specified in RFC 6379 and AES-GCM-128 as specified in RFC 5282, AES-GCM-256 as specified in RFC 5282. FCS_IPSEC_EXT.1.7 The TSF shall ensure that IKEv2 SA lifetimes can be configured by an Administrator based on length of time . If length of time is used, it must include at least one option that is 24 hours or less for Phase 1 SAs and 8 hours or less for Phase 2 SAs. FCS_IPSEC_EXT.1.8 The TSF shall ensure that all IKE protocols implement DH Groups ● 19 (256-bit Random ECP), 20 (384-bit Random ECP) according to RFC 5114 and ● 14 (2048-bit MODP), 15 (3072-bit MODP) according to RFC 3526. FCS_IPSEC_EXT.1.9 The TSF shall generate the secret value x used in the IKE DH key exchange ("x" in g^x mod p) using the random bit generator specified in FCS_RBG_EXT.1, and having a length of at least 224, 256, or 384 bits. FCS_IPSEC_EXT.1.10 Version: 1.1 Classification: Public Page 62 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The TSF shall generate nonces used in IKE exchanges in a manner such that the probability that a specific nonce value will be repeated during the life a specific IPsec SA is less than 1 in 2^112, 128, or 192. FCS_IPSEC_EXT.1.11 The TSF shall ensure that all IKE protocols perform peer authentication using RSA, ECDSA that use X.509v3 certificates that conform to RFC 4945 and no other method. FCS_IPSEC_EXT.1.12 The TSF shall not establish an SA if the Fully Qualified Domain Name (FQDN) and no other reference identifier type contained in a certificate does not match the expected values for the entity attempting to establish a connection. FCS_IPSEC_EXT.1.13 The TSF shall not establish an SA if the presented identifier does not match the configured reference identifier of the peer. FCS_IPSEC_EXT.1.14 The TSF shall be able to ensure by default that the strength of the symmetric algorithm (in terms of the number of bits in the key) negotiated to protect the IKEv2 IKE_SA connection is greater than or equal to the strength of the symmetric algorithm (in terms of the number of bits in the key) negotiated to protect the IKEv2 CHILD_SA connection. 6.1.2.22 FCS_IV_EXT.1 Initialization Vector Generation PP Origin: MDF FCS_IV_EXT.1.1 The TSF shall generate IVs in accordance with MDF Table 11: References and IV Requirements for NIST- approved Cipher Modes. 6.1.2.23 FCS_RBG_EXT.1/HW Random Bit Generation (Hardware) PP Origin: MDF FCS_RBG_EXT.1.1/HW The TSF shall perform all deterministic random bit generation services in accordance with NIST Special Publication 800-90A using CTR_DRBG (AES). FCS_RBG_EXT.1.2/HW The deterministic RBG shall be seeded by an entropy source that accumulates entropy from a TSF- hardware-based noise source with a minimum of 256 bits of entropy at least equal to the greatest security strength (according to NIST SP 800-57) of the keys and hashes that it will generate. FCS_RBG_EXT.1.3/HW The TSF shall be capable of providing output of the RBG to applications running on the TSF that request random bits. Version: 1.1 Classification: Public Page 63 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Application Note: FCS_RBG_EXT.1/HW is for the Secure Enclave RBG. 6.1.2.24 FCS_RBG_EXT.1/SW Random Bit Generation (Software) PP Origin: MDF FCS_RBG_EXT.1.1/SW The TSF shall perform all deterministic random bit generation services in accordance with NIST Special Publication 800-90A using CTR_DRBG (AES). FCS_RBG_EXT.1.2/SW The deterministic RBG shall be seeded by an entropy source that accumulates entropy from a software- based noise source with a minimum of 256 bits of entropy at least equal to the greatest security strength (according to NIST SP 800-57) of the keys and hashes that it will generate. FCS_RBG_EXT.1.3/SW The TSF shall be capable of providing output of the RBG to applications running on the TSF that request random bits. Application Note: FCS_RBG_EXT.1/SW is for the kernel and user space RBG. 6.1.2.25 FCS_SRV_EXT.1 Cryptographic Algorithm Services PP Origin: MDF FCS_SRV_EXT.1.1 The TSF shall provide a mechanism for applications to request the TSF to perform the following cryptographic operations: ● All mandatory and selected algorithms with the exception of ECC over curve 25519-based algorithms in FCS_CKM.2/LOCKED ● The following algorithms in FCS_COP.1/ENCRYPT: AES-CBC, no other modes ● All selected algorithms in FCS_COP.1/SIGN ● All mandatory and selected algorithms in FCS_COP.1/HASH ● All mandatory and selected algorithms in FCS_COP.1/KEYHMAC ● No other cryptographic operations 6.1.2.26 FCS_STG_EXT.1 Cryptographic Key Storage PP Origin: MDF FCS_STG_EXT.1.1 The TSF shall provide software-based secure key storage for asymmetric private keys and symmetric keys, persistent secrets. FCS_STG_EXT.1.2 The TSF shall be capable of importing keys or secrets into the secure key storage upon request of the administrator and applications running on the TSF. Version: 1.1 Classification: Public Page 64 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FCS_STG_EXT.1.3 The TSF shall be capable of destroying keys or secrets in the secure key storage upon request of the administrator. FCS_STG_EXT.1.4 The TSF shall have the capability to allow only the application that imported the key or secret the use of the key or secret. Exceptions may only be explicitly authorized by a common application developer. FCS_STG_EXT.1.5 The TSF shall allow only the application that imported the key or secret to request that the key or secret be destroyed. Exceptions may only be explicitly authorized by a common application developer. 6.1.2.27 FCS_STG_EXT.2 Encrypted Cryptographic Key Storage PP Origin: MDF FCS_STG_EXT.2.1 The TSF shall encrypt all DEKs, KEKs, WPA2/WPA3 (PSKs), IPsec (client certificates), Bluetooth keys and all software-based key storage by KEKs that are ● Protected by the REK with ❍ encryption by a KEK chaining from a REK ● Protected by the REK and the password with ❍ encryption by a KEK chaining to a REK and the password-derived or biometric- unlocked KEK. FCS_STG_EXT.2.2 DEKs, KEKs, WPA2/WPA3 (PSKs), IPsec (client certificates), Bluetooth keys and all software- based key storage shall be encrypted using one of the following methods: ● using AES in the Key Wrap (KW) mode. 6.1.2.28 FCS_STG_EXT.3 Integrity of Encrypted Key Storage PP Origin: MDF FCS_STG_EXT.3.1 The TSF shall protect the integrity of any encrypted DEKs and KEKs and long-term trusted channel key material by ● an immediate application of the key for decrypting the protected data followed by a successful verification of the decrypted data with previously known information. FCS_STG_EXT.3.2 The TSF shall verify the integrity of the MAC of the stored key prior to use of the key. 6.1.2.29 FCS_STG_EXT.4 Cryptographic Key Storage PP Origin: Agent Version: 1.1 Classification: Public Page 65 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FCS_STG_EXT.4.1 The MDM Agent shall use the platform provided key storage for all persistent secret and private keys. 6.1.2.30 FCS_TLS_EXT.1 TLS Protocol PP Origin: TLSPKG FCS_TLS_EXT.1.1 The product shall implement TLS as a client. 6.1.2.31 FCS_TLSC_EXT.1 TLS Client Protocol PP Origin: TLSPKG Applied TDs: TD0442 FCS_TLSC_EXT.1.1 The product shall implement TLS 1.2 (RFC 5246) and no earlier TLS versions as a client that supports the cipher suites ● TLS_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5288 ● TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 as defined in RFC 5289 ● TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5289 ● TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 as defined in RFC 5289 ● TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5289 and also supports functionality for ● mutual authentication ● session renegotiation. FCS_TLSC_EXT.1.2 The product shall verify that the presented identifier matches the reference identifier according to RFC 6125. FCS_TLSC_EXT.1.3 The product shall not establish a trusted channel if the server certificate is invalid ● with no exceptions. 6.1.2.32 FCS_TLSC_EXT.1/WLAN TLS Client Protocol (EAP-TLS for WLAN) PP Origin: WLANC FCS_TLSC_EXT.1.1/WLAN The TSF shall implement TLS 1.2 (RFC 5246) and TLS 1.1 (RFC 4346) in support of the EAP-TLS protocol as specified in RFC 5216 supporting the following cipher suites: ● TLS_RSA_WITH_AES_128_CBC_SHA as defined in RFC 5246 ● TLS_RSA_WITH_AES_128_CBC_SHA256 as defined in RFC 5246 Version: 1.1 Classification: Public Page 66 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● TLS_RSA_WITH_AES_256_CBC_SHA256 as defined in RFC 5246 FCS_TLSC_EXT.1.2/WLAN The TSF shall generate random values used in the EAP-TLS exchange using the RBG specified in FCS_RBG_EXT.1. FCS_TLSC_EXT.1.3/WLAN The TSF shall use X509 v3 certificates as specified in FIA_X509_EXT.1/WLAN. FCS_TLSC_EXT.1.4/WLAN The TSF shall verify that the server certificate presented includes the Server Authentication purpose (id- kp 1 with OID 1.3.6.1.5.5.7.3.1) in the extendedKeyUsage field. FCS_TLSC_EXT.1.5/WLAN The TSF shall allow an authorized administrator to configure the list of CAs that are allowed to sign authentication server certificates that are accepted by the TOE. 6.1.2.33 FCS_TLSC_EXT.2 TLS Client Support for Mutual Authentication PP Origin: TLSPKG FCS_TLSC_EXT.2.1 The product shall support mutual authentication using X.509v3 certificates. 6.1.2.34 FCS_TLSC_EXT.4 TLS Client Support for Renegotiation PP Origin: TLSPKG FCS_TLSC_EXT.4.1 The product shall support secure renegotiation through use of the "renegotiation_info" TLS extension in accordance with RFC 5746. 6.1.2.35 FCS_TLSC_EXT.5 TLS Client Support for Supported Groups Extension PP Origin: TLSPKG FCS_TLSC_EXT.5.1 The product shall present the Supported Groups Extension in the Client Hello with the supported groups ● secp256r1 ● secp384r1 ● secp521r1 6.1.2.36 FCS_WPA_EXT.1 Supported WPA Versions PP Origin: WLANC FCS_WPA_EXT.1.1 Version: 1.1 Classification: Public Page 67 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The TSF shall support WPA3 and WPA2 security type. 6.1.3 User data protection (FDP) 6.1.3.1 FDP_ACF_EXT.1 Access Control for System Services PP Origin: MDF FDP_ACF_EXT.1.1 The TSF shall provide a mechanism to restrict the system services that are accessible to an application. FDP_ACF_EXT.1.2 The TSF shall provide an access control policy that prevents application, groups of applications from accessing all data stored by other application, groups of applications. Exceptions may only be explicitly authorized for such sharing by a common application developer. 6.1.3.2 FDP_ACF_EXT.2 Access Control for System Resources PP Origin: MDF FDP_ACF_EXT.2.1 The TSF shall provide a separate keystore, account credential database for each application group and only allow applications within that process group to access the resource. Exceptions may only be explicitly authorized for such sharing by no one. 6.1.3.3 FDP_DAR_EXT.1 Protected Data Encryption PP Origin: MDF FDP_DAR_EXT.1.1 Encryption shall cover all protected data. FDP_DAR_EXT.1.2 Encryption shall be performed using DEKs with AES in the XTS mode with key size 128, 256 bits. 6.1.3.4 FDP_DAR_EXT.2 Sensitive Data Encryption PP Origin: MDF FDP_DAR_EXT.2.1 The TSF shall provide a mechanism for applications to mark data and keys as sensitive. FDP_DAR_EXT.2.2 The TSF shall use an asymmetric key scheme to encrypt and store sensitive data received while the product is locked. FDP_DAR_EXT.2.3 Version: 1.1 Classification: Public Page 68 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The TSF shall encrypt any stored symmetric key and any stored private key of the asymmetric keys used for the protection of sensitive data according to FCS_STG_EXT.2.1 selection 2. FDP_DAR_EXT.2.4 The TSF shall decrypt the sensitive data that was received while in the locked state upon transitioning to the unlocked state using the asymmetric key scheme and shall re-encrypt that sensitive data using the symmetric key scheme. 6.1.3.5 FDP_IFC_EXT.1 Subset Information Flow Control PP Origin: MDF, VPNC FDP_IFC_EXT.1.1 The TSF shall ● provide an interface which allows a VPN client to protect all IP traffic using IPsec ● provide a VPN client which can protect all IP traffic using IPsec as defined in the PP-Module for Virtual Private Network (VPN) Clients, version 2.4 with the exception of IP traffic needed to manage the VPN connection, and AirPrint, cellular services, voicemail, and initial Captive Network communication, when the VPN is enabled. 6.1.3.6 FDP_RIP.2 Full Residual Information Protection PP Origin: VPNC FDP_RIP.2.1 The TOE shall enforce that any previous information content of a resource is made unavailable upon the allocation of the resource to all objects. 6.1.3.7 FDP_STG_EXT.1 User Data Storage PP Origin: MDF FDP_STG_EXT.1.1 The TSF shall provide protected storage for the Trust Anchor Database. 6.1.3.8 FDP_UPC_EXT.1/APPS Inter-TSF User Data Transfer Protection (Applications) PP Origin: MDF FDP_UPC_EXT.1.1/APPS The TSF shall provide a means for non-TSF applications executing on the TOE to use ● Mutually authenticated TLS as defined in the Functional Package for Transport Layer Security (TLS), version 1.1, ● HTTPS, and Version: 1.1 Classification: Public Page 69 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● No other protocol to provide a protected communication channel between the non-TSF application and another IT product that is logically distinct from other communication channels, provides assured identification of its end points, protects channel data from disclosure, and detects modification of the channel data. FDP_UPC_EXT.1.2/APPS The TSF shall permit the non-TSF applications to initiate communication via the trusted channel. 6.1.3.9 FDP_UPC_EXT.1/BLUETOOTH Inter-TSF User Data Transfer Protection (Bluetooth) PP Origin: MDF FDP_UPC_EXT.1.1/BLUETOOTH The TSF shall provide a means for non-TSF applications executing on the TOE to use ● Bluetooth BR/EDR in accordance with the PP-Module for Bluetooth, version 1.0, and ● Bluetooth LE in accordance with the PP-Module for Bluetooth, version 1.0 to provide a protected communication channel between the non-TSF application and another IT product that is logically distinct from other communication channels, provides assured identification of its end points, protects channel data from disclosure, and detects modification of the channel data. FDP_UPC_EXT.1.2/BLUETOOTH The TSF shall permit the non-TSF applications to initiate communication via the trusted channel. 6.1.3.10 FDP_VPN_EXT.1 Split Tunnel Prevention PP Origin: VPNC FDP_VPN_EXT.1.1 The TSF shall ensure that all IP traffic (other than IP traffic required to establish the VPN connection) flow through the IPsec VPN client. 6.1.4 Identification and authentication (FIA) 6.1.4.1 FIA_AFL_EXT.1 Authentication Failure Handling PP Origin: MDF FIA_AFL_EXT.1.1 The TSF shall consider password and no other mechanism as critical authentication mechanisms. FIA_AFL_EXT.1.2 The TSF shall detect when a configurable positive integer within 2 to 11 of unique unsuccessful authentication attempts occur related to last successful authentication for each authentication mechanism. Version: 1.1 Classification: Public Page 70 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FIA_AFL_EXT.1.3 The TSF shall maintain the number of unsuccessful authentication attempts that have occurred upon power off. FIA_AFL_EXT.1.4 When the defined number of unsuccessful authentication attempts has exceeded the maximum allowed for a given authentication mechanism, all future authentication attempts will be limited to other available authentication mechanisms, unless the given mechanism is designated as a critical authentication mechanism. FIA_AFL_EXT.1.5 When the defined number of unsuccessful authentication attempts for the last available authentication mechanism or single critical authentication mechanism has been surpassed, the TSF shall perform a wipe of all protected data. FIA_AFL_EXT.1.6 The TSF shall increment the number of unsuccessful authentication attempts prior to notifying the user that the authentication was unsuccessful. 6.1.4.2 FIA_BLT_EXT.1 Bluetooth User Authorization PP Origin: BT FIA_BLT_EXT.1.1 The TSF shall require explicit user authorization before pairing with a remote Bluetooth device. 6.1.4.3 FIA_BLT_EXT.2 Bluetooth Mutual Authentication PP Origin: BT FIA_BLT_EXT.2.1 The TSF shall require Bluetooth mutual authentication between devices prior to any data transfer over the Bluetooth link. 6.1.4.4 FIA_BLT_EXT.3 Rejection of Duplicate Bluetooth Connections PP Origin: BT FIA_BLT_EXT.3.1 The TSF shall discard pairing and session initialization attempts from a Bluetooth device address (BD_ADDR) to which an active session already exists. 6.1.4.5 FIA_BLT_EXT.4 Secure Simple Pairing PP Origin: BT Version: 1.1 Classification: Public Page 71 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FIA_BLT_EXT.4.1 The TOE shall support Bluetooth Secure Simple Pairing, both in the host and the controller. FIA_BLT_EXT.4.2 The TOE shall support Secure Simple Pairing during the pairing process. 6.1.4.6 FIA_BLT_EXT.6 Trusted Bluetooth Device User Authorization PP Origin: BT FIA_BLT_EXT.6.1 The TSF shall require explicit user authorization before granting trusted remote devices access to services associated with the following Bluetooth profiles: none. 6.1.4.7 FIA_BLT_EXT.7 Untrusted Bluetooth Device User Authorization PP Origin: BT FIA_BLT_EXT.7.1 The TSF shall require explicit user authorization before granting untrusted remote devices access to services associated with the following Bluetooth profiles: none. 6.1.4.8 FIA_ENR_EXT.2 Agent Enrollment of Mobile Device into Management PP Origin: Agent FIA_ENR_EXT.2.1 The MDM Agent shall record the reference identifier of the MDM Server during the enrollment process. 6.1.4.9 FIA_MBE_EXT.1 Biometric enrolment PP Origin: BIO Applied TDs: TD0714 FIA_MBE_EXT.1.1 The TSF shall provide a mechanism to enrol an authenticated user to the biometric system. 6.1.4.10 FIA_MBE_EXT.2 Quality of biometric templates for biometric enrolment PP Origin: BIO FIA_MBE_EXT.2.1 The TSF shall only use biometric samples of sufficient quality for enrolment. Sufficiency of sample data shall be determined by measuring sample with a developer defined quality assessment method. 6.1.4.11 FIA_MBV_EXT.1 Biometric verification PP Origin: BIO Version: 1.1 Classification: Public Page 72 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FIA_MBV_EXT.1.1 The TSF shall provide a biometric verification mechanism using face, fingerprint. FIA_MBV_EXT.1.2 The TSF shall provide a biometric verification mechanism with the FAR not exceeding 0.01% for the upper bound of 95% confidence interval and, FRR not exceeding 5% for the upper bound of 95% confidence interval. 6.1.4.12 FIA_MBV_EXT.2 Quality of biometric samples for biometric verification PP Origin: BIO FIA_MBV_EXT.2.1 The TSF shall only use biometric samples of sufficient quality for verification. Sufficiency of sample data shall be determined by measuring sample with a developer defined quality assessment method. 6.1.4.13 FIA_PAE_EXT.1 Port Access Entity Authentication PP Origin: WLANC FIA_PAE_EXT.1.1 The TSF shall conform to IEEE Standard 802.1X for a Port Access Entity (PAE) in the "Supplicant" role. 6.1.4.14 FIA_PMG_EXT.1 Password Management PP Origin: MDF FIA_PMG_EXT.1.1 The TSF shall support the following for the Password Authentication Factor: 1. Passwords shall be able to be composed of any combination of upper and lower case letters, numbers, and special characters: "!", "@", "#", "$", "%", "^", "&", "*", "(", ")"; 2. Password length up to 16 characters shall be supported. 6.1.4.15 FIA_TRT_EXT.1 Authentication Throttling PP Origin: MDF FIA_TRT_EXT.1.1 The TSF shall limit automated user authentication attempts by enforcing a delay between incorrect authentication attempts for all authentication mechanisms selected in FIA_UAU.5.1. The minimum delay shall be such that no more than 10 attempts can be attempted per 500 milliseconds. 6.1.4.16 FIA_UAU.5 Multiple Authentication Mechanisms PP Origin: MDF FIA_UAU.5.1 Version: 1.1 Classification: Public Page 73 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The TSF shall provide password and biometric in accordance with the Biometric Enrollment and Verification, version 1.1 to support user authentication. FIA_UAU.5.2 The TSF shall authenticate any user's claimed identity according to the the validation of the user's password, fingerprint, or face. Application Note: The TSS describes authentication rules in more detail. 6.1.4.17 FIA_UAU.6/CREDENTIAL Re-Authenticating (Credential Change) PP Origin: MDF FIA_UAU.6.1/CREDENTIAL The TSF shall re-authenticate the user via the Password Authentication Factor under the conditions attempted change to any supported authentication mechanisms. 6.1.4.18 FIA_UAU.6/LOCKED Re-Authenticating (TSF Lock) PP Origin: MDF FIA_UAU.6.1/LOCKED The TSF shall re-authenticate the user via an authentication factor defined in FIA_UAU.5.1 under the conditions TSF-initiated lock, user-initiated lock, no other conditions. 6.1.4.19 FIA_UAU.7 Protected Authentication Feedback PP Origin: MDF FIA_UAU.7.1 The TSF shall provide only obscured feedback to the device's display to the user while the authentication is in progress. 6.1.4.20 FIA_UAU_EXT.1 Authentication for Cryptographic Operation PP Origin: MDF FIA_UAU_EXT.1.1 The TSF shall require the user to present the Password Authentication Factor prior to decryption of protected data and encrypted DEKs, KEKs and all software-based key storage at startup. 6.1.4.21 FIA_UAU_EXT.2 Timing of Authentication PP Origin: MDF FIA_UAU_EXT.2.1 The TSF shall allow ● Accessing Medical ID information ● Answering calls Version: 1.1 Classification: Public Page 74 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● Making emergency calls ● Using the cameras (unless their use is generally disallowed) ● Using the control center ● Using the flashlight ● Using the notification center on behalf of the user to be performed before the user is authenticated. FIA_UAU_EXT.2.2 The TSF shall require each user to be successfully authenticated before allowing any other TSF-mediated actions on behalf of that user. 6.1.4.22 FIA_X509_EXT.1 X.509 Validation of Certificates PP Origin: MDF Applied TDs: TD0689 FIA_X509_EXT.1.1 The TSF shall validate certificates in accordance with the following rules: ● RFC 5280 certificate validation and certificate path validation. ● The certificate path must terminate with a certificate in the Trust Anchor Database. ● The TSF shall validate a certificate path by ensuring the presence of the basicConstraints extension, that the CA flag is set to TRUE for all CA certificates, and that any path constraints are met. ● The TSF shall validate that any CA certificate includes caSigning purpose in the key usage field. ● The TSF shall validate the revocation status of the certificate using OCSP as specified in RFC 6960. ● The TSF shall validate the extendedKeyUsage field according to the following rules: ❍ Certificates used for trusted updates and executable code integrity verification shall have the Code Signing purpose (id-kp 3 with OID 1.3.6.1.5.5.7.3.3) in the extendedKeyUsage field. ❍ Server certificates presented for TLS shall have the Server Authentication purpose (id-kp 1 with OID 1.3.6.1.5.5.7.3.1) in the extendedKeyUsage field. ❍ Server certificates presented for EST shall have the CMC Registration Authority (RA) purpose (id-kp-cmcRA with OID 1.3.6.1.5.5.7.3.28) in the extendedKeyUsage field. [conditional] ❍ Client certificates presented for TLS shall have the Client Authentication purpose (id-kp 2 with OID 1.3.6.1.5.5.7.3.2) in the extendedKeyUsage field. ❍ OCSP certificates presented for OCSP responses shall have the OCSP Signing purpose (id-kp 9 with OID 1.3.6.1.5.5.7.3.9) in the extendedKeyUsage field. [conditional] FIA_X509_EXT.1.2 The TSF shall only treat a certificate as a CA certificate if the basicConstraints extension is present and the CA flag is set to TRUE. 6.1.4.23 FIA_X509_EXT.1/WLAN X.509 Certificate Validation PP Origin: WLANC Version: 1.1 Classification: Public Page 75 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FIA_X509_EXT.1.1/WLAN The TSF shall validate certificates for EAP-TLS in accordance with the following rules: ● RFC 5280 certificate validation and certificate path validation ● The certificate path must terminate with a certificate in the Trust Anchor Database ● The TSF shall validate a certificate path by ensuring the presence of the basicConstraints extension and that the CA flag is set to TRUE for all CA certificates ● The TSF shall validate the extendedKeyUsage field according to the following rules: ❍ Server certificates presented for TLS shall have the Server Authentication purpose (id-kp 1 with OID 1.3.6.1.5.5.7.3.1) in the extendedKeyUsage field ❍ Client certificates presented for TLS shall have the Client Authentication purpose (id-kp 2 with OID 1.3.6.1.5.5.7.3.2) in the extendedKeyUsage field. FIA_X509_EXT.1.2/WLAN The TSF shall only treat a certificate as a CA certificate if the basicConstraints extension is present and the CA flag is set to TRUE. 6.1.4.24 FIA_X509_EXT.2 X.509 Certificate Authentication PP Origin: MDF, VPNC FIA_X509_EXT.2.1 The TSF shall use X.509v3 certificates as defined by RFC 5280 to support authentication for mutually authenticated TLS as defined in the ● Functional Package for Transport Layer Security (TLS), version 1.1 ● HTTPS ● IPsec in accordance with the PP-Module for Virtual Private Network (VPN) Clients, version 2.4 and ● code signing for system software updates ● code signing for mobile applications ● code signing for integrity verification FIA_X509_EXT.2.2 When the TSF cannot establish a connection to determine the revocation status of a certificate, the TSF shall accept the certificate. 6.1.4.25 FIA_X509_EXT.2/WLAN X.509 Certificate Authentication (EAP-TLS for WLAN) PP Origin: WLANC FIA_X509_EXT.2.1/WLAN The TSF shall use X.509v3 certificates as defined by RFC 5280 to support authentication for EAP-TLS exchanges. Version: 1.1 Classification: Public Page 76 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6.1.4.26 FIA_X509_EXT.3 Request Validation of Certificates PP Origin: MDF FIA_X509_EXT.3.1 The TSF shall provide a certificate validation service to applications. FIA_X509_EXT.3.2 The TSF shall respond to the requesting application with the success or failure of the validation. 6.1.4.27 FIA_X509_EXT.6 Certificate Storage and Management PP Origin: WLANC FIA_X509_EXT.6.1 The TSF shall store and protect certificate(s) from unauthorized deletion and modification. FIA_X509_EXT.6.2 The TSF shall provide the capability for authorized administrators to load X.509v3 certificates into the TOE for use by the TSF. 6.1.5 Security management (FMT) 6.1.5.1 FMT_MOF_EXT.1 Management of Security Functions Behavior PP Origin: MDF FMT_MOF_EXT.1.1 The TSF shall restrict the ability to perform the functions in column 4 of Table 7 Table 15 to the user. FMT_MOF_EXT.1.2 The TSF shall restrict the ability to perform the functions in column 6 of Table 7 Table 15 to the administrator when the device is enrolled and according to the administrator-configured policy. 6.1.5.2 FMT_POL_EXT.2 Agent Trusted Policy Update PP Origin: Agent Applied TDs: TD0755 FMT_POL_EXT.2.1 The MDM Agent shall only accept policies and policy updates that are digitally signed by a private key that has been authorized for policy updates by the MDM Server. FMT_POL_EXT.2.2 The MDM Agent shall not install policies if the signature check fails. Version: 1.1 Classification: Public Page 77 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6.1.5.3 FMT_SMF.1 Specification of Management Functions PP Origin: MDF, VPNC Applied TDs: TD0711 FMT_SMF.1.1 The TSF shall be capable of performing the following management functions: Status Markers: M - Mandatory O - Optional/Objective '-' - means that no value (M or O) can be assigned (Y) - Optional and supported (i.e., Yes) (N) - Optional and unsupported (i.e., No) Table 15: Management Functions (MDF/VPNC) # Management Function Impl. User Only Admin Admin Only 1 configure password policy: ● Minimum password length ● Minimum password complexity ● Maximum password lifetime M - M M 2 configure session locking policy: ● Screen-lock enabled/disabled ● Screen lock timeout ● Number of authentication failures M - M M 3 enable/disable the VPN protection: ● Across device ● on a per-app basis M (N) (Y) (N) 4 enable/disable Bluetooth, cellular, and Wi-Fi radios M (Y) (N) (N) 5 enable/disable cameras: ● Across device ● on a per-app basis M (N) (Y) (N) 6 transition to the locked state M - M - 7 TSF wipe of protected data M - M - 8 configure application installation policy by ● denying installation of applications M - M M 9 import keys or secrets into the secure key storage M (N) (Y) - 10 destroy imported keys or secrets and no other keys/secrets in the secure key storage M (N) (Y) - Version: 1.1 Classification: Public Page 78 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 11 import X.509v3 certificates into the Trust Anchor Database M - M (Y) 12 remove imported X.509v3 certificates and no other X.509v3 certificates in the Trust Anchor Database M (N) (Y) - 13 enroll the TOE in management M (Y) (N) (N) 14 remove applications M - M (Y) 15 update system software M - M (N) 16 install applications M - M (Y) 17 remove Enterprise applications M - M - 18 enable/disable display notification in the locked state of: ● all notifications M (N) (Y) (N) 19 enable data-at-rest protection M (N) (N) (N) 20 enable removable media's data-at-rest protection M (Y) (N) (N) 21 enable/disable location services: ● Across device ● on a per-app basis M (Y) (N) (N) 22 enable/disable the use of Biometric Authentication Factor (Y) (N) (Y) (Y) 23 configure whether to allow or disallow establishment of a TLS trusted channel if the peer or server certificate is deemed invalid. (Y) (Y) (N) (N) 28 wipe Enterprise data (Y) (N) (Y) - 30 configure whether to allow or disallow establishment of a trusted channel if the TSF cannot establish a connection to determine the validity of a certificate (Y) (N) (Y) (N) 32 read audit logs kept by the TSF (Y) (N) (Y) (N) 36 configure the unlock banner M - (Y) (Y) 37 configure the auditable items (Y) - (Y) (N) 44 unenroll the TOE from management (mandated by MDF Use Case 3) M - M - 45 enable/disable the Always On VPN protection: ● Across device ● no other method (mandated by VPNC FMT_SMF.1) M (N) (Y) (Y) 47 enable/disable microphones on a per-app basis (Y) (Y) (N) (N) Version: 1.1 Classification: Public Page 79 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Application Note: Most of the administrator management functions are implemented by the specification and installation of Configuration Profiles. Also, for the enforcement of other functions, such as the password policy, the installation of Configuration Profiles with dedicated values for some of the payload keys is required. For function 19, the TOE always provides data at rest protection of internal memory (i.e., it cannot be managed (enabled or disabled)). The KEKs are protected by the passcode feature in the evaluated configuration. Function 20 is supported in the evaluated configuration. Backups can be made using iTunes or iCloud, and backup encryption can be made mandatory. Function 23 is supported by TLS for the user. Function 23 is not supported by the VPN. Function 26 has not been included in the table because the TOE does not support a developer mode. Function 27 has not been included in the table because the TOE (in its evaluated configuration) does not support bypass of local user authentication. Function 33 has not been included in the table because the feature is not configurable. Functions 24,25,29,31,34,35,38,39,40,41,42,43, and 46 have not been included in the table because the functions are optional. 6.1.5.4 FMT_SMF.1/VPN Specification of Management Functions (VPN) PP Origin: VPNC FMT_SMF.1.1/VPN The TSF shall be capable of performing the following management functions: ● Specify VPN gateways to use for connections 6.1.5.5 FMT_SMF.1/WLAN Specification of Management Functions (WLAN Client) PP Origin: WLANC Applied TDs: TD0667 FMT_SMF.1.1/WLAN The TSF shall be capable of performing the following management functions: Status Markers: M - Mandatory O - Optional/Objective X - Supported '-' - Prohibited Table 16: Management Functions (WLANC) # Management Function Impl Admin User WL-1 configure security policy for each wireless network: M M - Version: 1.1 Classification: Public Page 80 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● specify the CA(s) from which the TSF will accept WLAN authentication server certificate(s), ● security type, ● authentication protocol, ● client credentials to be used for authentication WL-2 specify wireless networks (SSIDs) to which the TSF may connect M M - WL-3 enable/disable disable wireless network bridging capability (for example, bridging a connection between the WLAN and cellular radios to function as a hotspot) authenticated by passcode M M X WL-4 enable/disable certificate revocation list checking - - - WL-5 disable ad hoc wireless client-to-client connection capability (a.k.a. Apple AirDrop) X X X WL-6 disable roaming capability X X - WL-7 enable/disable IEEE 802.1X pre-authentication - - - WL-8 loading X.509 certificates into the TOE X X - WL-9 revoke X.509 certificates loaded into the TOE X X X WL-10 enable/disable and configure PMK caching: ● set the amount of time (in minutes) for which PMK entries are cached, ● set the maximum number of PMK entries that can be cached - - - WL-11 configure security policy for each wireless network: set wireless frequency band to 2.4 GHz, 5 GHz, 6 GHz - - - 6.1.5.6 FMT_SMF_EXT.1/BT Specification of Management Functions PP Origin: BT FMT_SMF_EXT.1.1/BT The TSF shall be capable of performing the following Bluetooth management functions: Status Markers: M - Mandatory X - Supported '-' - Prohibited Table 17: Management Functions (BT) Function Impl. User Only Admin Admin Only BT-1. Configure the Bluetooth trusted channel. ● Disable/enable the Discoverable (for BR/EDR) and Advertising (for LE) modes; M X - - Version: 1.1 Classification: Public Page 81 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 BT-2. Change the Bluetooth device name (separately for BR/EDR and LE); - - - - BT-3. Provide separate controls for turning the BR/EDR and LE radios on and off; - - - - BT-4. Allow/disallow the following additional wireless technologies to be used with Bluetooth: no other wireless technologies; - - - - BT-5. Configure allowable methods of Out of Band pairing (for BR/EDR and LE); - - - - BT-6. Disable/enable the Discoverable (for BR/EDR) and Advertising (for LE) modes separately; - - - - BT-7. Disable/enable the Connectable mode (for BR/EDR and LE); - - - - BT-8. Disable/enable the Bluetooth list of Bluetooth service and/or profiles available on the OS (for BR/EDR and LE); - - - - BT-9. Specify minimum level of security for each pairing (for BR/ EDR and LE); - - - - Application Note: The optional management functions are not supported. 6.1.5.7 FMT_SMF_EXT.2 Specification of Remediation Actions PP Origin: MDF FMT_SMF_EXT.2.1 The TSF shall offer ● remove Enterprise applications ● remove all device-stored Enterprise resource data ● remove Enterprise secondary authentication data upon unenrollment and no other triggers. 6.1.5.8 FMT_SMF_EXT.4 Specification of Management Functions PP Origin: Agent Applied TDs: TD0755 FMT_SMF_EXT.4.1 The MDM Agent shall be capable of interacting with the platform to perform the following functions: ● Import the certificates to be used for authentication of MDM Agent communications ● administrator-provided management functions in MDF PP ● no additional functions. FMT_SMF_EXT.4.2 Version: 1.1 Classification: Public Page 82 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The MDM Agent shall be capable of performing the following functions: ● Enroll in management ● Configure whether users can unenroll from management ● no other functions. 6.1.5.9 FMT_UNR_EXT.1 User Unenrollment Prevention PP Origin: Agent FMT_UNR_EXT.1.1 The MDM Agent shall provide a mechanism to enforce the following behavior upon an attempt to unenroll the mobile device from management: ● prevent the unenrollment from occurring ● apply remediation actions 6.1.6 Protection of the TSF (FPT) 6.1.6.1 FPT_AEX_EXT.1 Application Address Space Layout Randomization PP Origin: MDF FPT_AEX_EXT.1.1 The TSF shall provide address space layout randomization ASLR to applications. FPT_AEX_EXT.1.2 The base address of any user-space memory mapping will consist of at least 8 unpredictable bits. 6.1.6.2 FPT_AEX_EXT.2 Memory Page Permissions PP Origin: MDF FPT_AEX_EXT.2.1 The TSF shall be able to enforce read, write, and execute permissions on every page of physical memory. 6.1.6.3 FPT_AEX_EXT.3 Stack Overflow Protection PP Origin: MDF FPT_AEX_EXT.3.1 TSF processes that execute in a non-privileged execution domain on the application processor shall implement stack-based buffer overflow protection. 6.1.6.4 FPT_AEX_EXT.4 Domain Isolation PP Origin: MDF FPT_AEX_EXT.4.1 Version: 1.1 Classification: Public Page 83 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The TSF shall protect itself from modification by untrusted subjects. FPT_AEX_EXT.4.2 The TSF shall enforce isolation of address space between applications. 6.1.6.5 FPT_BDP_EXT.1 Biometric data processing PP Origin: BIO FPT_BDP_EXT.1.1 Processing of plaintext biometric data shall be inside the SEE in runtime. FPT_BDP_EXT.1.2 Transmission of plaintext biometric data between the capture sensor and the SEE shall be isolated from the main computer operating system on the TSF in runtime. 6.1.6.6 FPT_JTA_EXT.1 JTAG Disablement PP Origin: MDF FPT_JTA_EXT.1.1 The TSF shall disable access through hardware to JTAG. 6.1.6.7 FPT_KST_EXT.1 Key Storage PP Origin: MDF, BIO FPT_KST_EXT.1.1 The TSF shall not store any plaintext key material or biometric data in readable non-volatile memory. 6.1.6.8 FPT_KST_EXT.2 No Key Transmission PP Origin: MDF, BIO FPT_KST_EXT.2.1 The TSF shall not transmit any plaintext key material or biometric data outside the security boundary of the TOE. 6.1.6.9 FPT_KST_EXT.3 No Plaintext Key Export PP Origin: MDF FPT_KST_EXT.3.1 The TSF shall ensure it is not possible for the TOE users to export plaintext keys. 6.1.6.10 FPT_NOT_EXT.1 Self-Test Notification PP Origin: MDF Version: 1.1 Classification: Public Page 84 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FPT_NOT_EXT.1.1 The TSF shall transition to non-operational mode and no other actions when the following types of failures occur: ● failures of the self-tests ● TSF software integrity verification failures ● no other failures 6.1.6.11 FPT_PBT_EXT.1 Protection of biometric template PP Origin: BIO Applied TDs: TD0714 FPT_PBT_EXT.1.1 The TSF shall protect the biometric template using a password as an additional factor. 6.1.6.12 FPT_STM.1 Reliable Time Stamps PP Origin: MDF FPT_STM.1.1 The TSF shall be able to provide reliable time stamps for its own use. 6.1.6.13 FPT_TST_EXT.1 TSF Cryptographic Functionality Testing PP Origin: MDF FPT_TST_EXT.1.1 The TSF shall run a suite of self-tests during initial start-up (on power on) to demonstrate the correct operation of all cryptographic functionality. 6.1.6.14 FPT_TST_EXT.1/VPN TSF Self-Test PP Origin: VPNC FPT_TST_EXT.1.1/VPN The TOE shall run a suite of self tests during initial start-up (on power on) to demonstrate the correct operation of the TSF. FPT_TST_EXT.1.2/VPN The TOE shall provide the capability to verify the integrity of stored TSF executable code when it is loaded for execution through the use of the cryptographic services specified in FCS_COP.1/HASH , FCS_COP.1/SIGN , FCS_COP.1/KEYHMAC , or FIA_X509_EXT.1. 6.1.6.15 FPT_TST_EXT.2/PREKERNEL TSF Integrity Checking (Pre-Kernel) PP Origin: MDF Version: 1.1 Classification: Public Page 85 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FPT_TST_EXT.2.1/PREKERNEL The TSF shall verify the integrity of the bootchain up through the Application Processor OS kernel stored in mutable media prior to its execution through the use of a digital signature using a hardware- protected asymmetric key. 6.1.6.16 FPT_TST_EXT.2/POSTKERNEL TSF Integrity Checking (Post-Kernel) PP Origin: MDF FPT_TST_EXT.2.1/POSTKERNEL The TSF shall verify the integrity of applications stored in mutable media prior to its execution through the use of a digital signature using a hardware-protected asymmetric key. 6.1.6.17 FPT_TST_EXT.3 TSF Integrity Testing PP Origin: MDF FPT_TST_EXT.3.1 The TSF shall not execute code if the code signing certificate is deemed invalid. 6.1.6.18 FPT_TST_EXT.3/WLAN TSF Cryptographic Functionality Testing (WLAN Client) PP Origin: WLANC FPT_TST_EXT.3.1/WLAN The TOE shall run a suite of self-tests during initial start-up (on power on) to demonstrate the correct operation of the TSF. FPT_TST_EXT.3.2/WLAN The TOE shall provide the capability to verify the integrity of stored TSF executable code when it is loaded for execution through the use of the TSF-provided cryptographic services. 6.1.6.19 FPT_TUD_EXT.1 TSF Version Query PP Origin: MDF FPT_TUD_EXT.1.1 The TSF shall provide authorized users the ability to query the current version of the TOE firmware/ software. FPT_TUD_EXT.1.2 The TSF shall provide authorized users the ability to query the current version of the hardware model of the device. FPT_TUD_EXT.1.3 Version: 1.1 Classification: Public Page 86 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The TSF shall provide authorized users the ability to query the current version of installed mobile applications. 6.1.6.20 FPT_TUD_EXT.2 TSF Update Verification PP Origin: MDF FPT_TUD_EXT.2.1 The TSF shall verify software updates to the Application Processor system software and no other processor system software using a digital signature verified by the manufacturer trusted key prior to installing those updates. FPT_TUD_EXT.2.2 The TSF shall never update the TSF boot integrity key. FPT_TUD_EXT.2.3 The TSF shall verify that the digital signature verification key used for TSF updates matches an immutable hardware public key. 6.1.6.21 FPT_TUD_EXT.3 Application Signing PP Origin: MDF FPT_TUD_EXT.3.1 The TSF shall verify mobile application software using a digital signature mechanism prior to installation. 6.1.6.22 FPT_TUD_EXT.4 Trusted Update Verification PP Origin: MDF FPT_TUD_EXT.4.1 The TSF shall not install code if the code signing certificate is deemed invalid. 6.1.6.23 FPT_TUD_EXT.5 Application Verification PP Origin: MDF FPT_TUD_EXT.5.1 The TSF shall by default only install mobile applications cryptographically verified by a built-in X.509v3 certificate. 6.1.6.24 FPT_TUD_EXT.6 Trusted Update Verification PP Origin: MDF FPT_TUD_EXT.6.1 The TSF shall verify that software updates to the TSF are a current or later version than the current version of the TSF. Version: 1.1 Classification: Public Page 87 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6.1.7 TOE access (FTA) 6.1.7.1 FTA_SSL_EXT.1 TSF- and User-initiated Locked State PP Origin: MDF FTA_SSL_EXT.1.1 The TSF shall transition to a locked state after a time interval of inactivity. FTA_SSL_EXT.1.2 The TSF shall transition to a locked state after initiation by either the user or the administrator. FTA_SSL_EXT.1.3 The TSF shall, upon transitioning to the locked state, perform the following operations: a. Clearing or overwriting display devices, obscuring the previous contents; b. Zeroize the decrypted class key for the NSFileProtectionComplete class. 6.1.7.2 FTA_TAB.1 Default TOE Access Banners PP Origin: MDF FTA_TAB.1.1 Before establishing a user session, the TSF shall display an advisory warning message regarding unauthorized use of the TOE. 6.1.7.3 FTA_WSE_EXT.1 Wireless Network Access PP Origin: WLANC FTA_WSE_EXT.1.1 The TSF shall be able to attempt connections only to wireless networks specified as acceptable networks as configured by the administrator in FMT_SMF.1/WLAN. 6.1.8 Trusted path/channels (FTP) 6.1.8.1 FTP_BLT_EXT.1 Bluetooth Encryption PP Origin: BT FTP_BLT_EXT.1.1 The TSF shall enforce the use of encryption when transmitting data over the Bluetooth trusted channel for BR/EDR and LE. FTP_BLT_EXT.1.2 The TSF shall use key pairs per FCS_CKM_EXT.8 for Bluetooth encryption. Version: 1.1 Classification: Public Page 88 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 6.1.8.2 FTP_BLT_EXT.2 Persistence of Bluetooth Encryption PP Origin: BT FTP_BLT_EXT.2.1 The TSF shall terminate the connection if the remote device stops encryption while connected to the TOE. 6.1.8.3 FTP_BLT_EXT.3/BR Bluetooth Encryption Parameters (BR/EDR) PP Origin: BT FTP_BLT_EXT.3.1/BR The TSF shall set the minimum encryption key size to 128 bits for BR/EDR and not negotiate encryption key sizes smaller than the minimum size. 6.1.8.4 FTP_BLT_EXT.3/LE Bluetooth Encryption Parameters (LE) PP Origin: BT FTP_BLT_EXT.3.1/LE The TSF shall set the minimum encryption key size to 128 bits for LE and not negotiate encryption key sizes smaller than the minimum size. 6.1.8.5 FTP_ITC.1/WLAN Trusted Channel Communication (Wireless LAN) PP Origin: WLANC FTP_ITC.1.1/WLAN The TSF shall use 802.11-2012, 802.1X, and EAP-TLS to provide a trusted communication channel between itself and a wireless access point that is logically distinct from other communication channels and provides assured identification of its end points and protection of the channel data from modification or disclosure. FTP_ITC.1.2/WLAN The TSF shall permit the TSF to initiate communication via the trusted channel. FTP_ITC.1.3/WLAN The TSF shall initiate communication via the trusted channel for wireless access point connections. 6.1.8.6 FTP_ITC_EXT.1 Trusted Channel Communication PP Origin: MDF, VPNC FTP_ITC_EXT.1.1 The TSF shall use ● 802.11-2012 in accordance with the PP-Module for Wireless LAN Clients, version 1.0, Version: 1.1 Classification: Public Page 89 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● 802.1X in accordance with the PP-Module for Wireless LAN Clients, version 1.0, ● EAP-TLS in accordance with the PP-Module for Wireless LAN Clients, version 1.0, ● Mutually authenticated TLS in accordance with the Functional Package for Transport Layer Security (TLS), version 1.1 and ● IPsec in accordance with the PP-Module for Virtual Private Network (VPN) Clients, version 2.4 ● HTTPS protocols to provide a communication channel between itself and another trusted IT product that is logically distinct from other communication channels, provides assured identification of its end points, protects channel data from disclosure, and detects modification of the channel data. FTP_ITC_EXT.1.2 The TSF shall permit the TSF to initiate communication via the trusted channel. FTP_ITC_EXT.1.3 The TSF shall initiate communication via the trusted channel for wireless access point connections, administrative communication, configured enterprise connections, and OTA updates. 6.1.8.7 FTP_ITC_EXT.1(2) Trusted Channel Communication PP Origin: Agent FTP_ITC_EXT.1.1(2) The TSF shall use HTTPS to provide a communication channel between itself and another trusted IT product that is logically distinct from other communication channels, provides assured identification of its end points, protects channel data from disclosure, and detects modification of the channel data. FTP_ITC_EXT.1.2(2) The TSF shall permit the TSF and the MDM Server and no other IT entities to initiate communication via the trusted channel. FTP_ITC_EXT.1.3(2) The TSF shall initiate communication via the trusted channel for all communication between the MDM Agent and the MDM Server and no other communication 6.1.8.8 FTP_TRP.1(2) Trusted Path (for Enrollment) PP Origin: Agent FTP_TRP.1.1(2) The TSF shall use HTTPS to provide a trusted communication path between itself and another trusted IT product that is logically distinct from other communication paths and provides assured identification of its endpoints and protection of the communicated data from disclosure and detection of modification of the communicated data from modification, disclosure. Version: 1.1 Classification: Public Page 90 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FTP_TRP.1.2(2) The TSF shall permit MD users to initiate communication via the trusted path. FTP_TRP.1.3(2) The TSF shall require the use of the trusted path for all MD user actions. 6.2 Security Functional Requirements Rationale The SFR rationale is defined in the documents specified in Section 2 "CC Conformance Claim". 6.3 Security Assurance Requirements The security assurance requirements (SARs) for the TOE are defined in assurance packages. The following table shows the SARs, and the operations performed on the components according to CC part 3: iteration (Iter.), refinement (Ref.), assignment (Ass.) and selection (Sel.). Table 18: SARs Operations Security assurance class Security assurance requirement Source Iter. Ref. Ass. Sel. ALC_TSU_EXT.1 Timely Security Updates MDF No No No No ALC_CMC.1 Labelling of the TOE No No No No ALC Life-cycle support ALC_CMS.1 TOE CM coverage No No No No ASE_CCL.1 Conformance claims No No No No ASE_ECD.1 Extended components definition No No No No ASE_INT.1 ST introduction No No No No ASE_OBJ.1 Security objectives for the operational environment No No No No ASE_REQ.1 Stated security requirements No No No No ASE_SPD.1 Security problem definition No No No No ASE Security Target evaluation ASE_TSS.1 TOE summary specification No No No No ADV Development ADV_FSP.1 Basic functional specification No No No No AGD_OPE.1 Operational user guidance No No No No AGD Guidance documents AGD_PRE.1 Preparative procedures No No No No ATE Tests ATE_IND.1 Independent testing - conformance No No No No AVA Vulnerability assessment AVA_VAN.1 Vulnerability survey No No No No 6.3.1 ALC Life-cycle support 6.3.1.1 ALC_TSU_EXT.1 Timely Security Updates Developer action elements: Version: 1.1 Classification: Public Page 91 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ALC_TSU_EXT.1.1D The developer shall provide a description in the TSS of how timely security updates are made to the TOE. Content and presentation elements: ALC_TSU_EXT.1.2C The description shall include the process for creating and deploying security updates for the TOE software. ALC_TSU_EXT.1.3C The description shall express the time window as the length of time, in days, between public disclosure of a vulnerability and the public availability of security updates to the TOE. ALC_TSU_EXT.1.4C The description shall include the mechanisms publicly available for reporting security issues pertaining to the TOE. ALC_TSU_EXT.1.5C The description shall include where users can seek information about the availability of new updates including details (e.g. CVE identifiers) of the specific public vulnerabilities corrected by each update. Evaluator action elements: ALC_TSU_EXT.1.6E The evaluator shall confirm that the information provided meets all requirements for content and presentation of evidence. 6.4 Security Assurance Requirements Rationale The SAR rationale is defined in the documents specified in Section 2 "CC Conformance Claim". Version: 1.1 Classification: Public Page 92 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 7 TOE Summary Specification Table 19 provides a mapping of SFRs to the TSS information. Table 19: SFR to TSS mappings SFR TSS Requirements from Assurance Activities TSS Section/Reference FAU FAU_ALT_EXT.2.1 PP Origin: Agent Describes how the alerts are implemented, how the candidate policy updates are obtained; and the actions that take place for successful (policy update installed) and unsuccessful (policy update not installed) cases. Identifies the software components that are performing the processing. Describes how reachability events are implemented, and if configurable is selected in FMT_SMF_EXT.4.2. Clearly indicates who (MDM Agent or MDM Server) initiates reachability events. 7.1.8 "Trusted Path/Channels (FTP)" 7.1.9.2 "MDM Agent Alerts" Table 30 "MDM Agent Status Commands" 7.1.9.2.3 "Alerts on receiving periodic reachability events" FAU_ALT_EXT.2.2 PP Origin: Agent Describes under what circumstances, if any, the alert may not be generated, how alerts are queued, and the maximum amount of storage for queued messages. 7.1.9.2.1 "Queuing of Alerts" FAU_GEN.1 PP Origin: MDF Lists all of the auditable events and provides a format for audit records. Each audit record format type must be covered, along with a brief description of each field. Provides that every audit event type mandated by the PP is described and that the description of the fields contains the information required in FAU_GEN.1.2. 7.1.9.1 "Audit Records" Table 10 "Mandatory Auditable Events (MDF)" FAU_GEN.1.1(2) PP Origin: Agent Provides a format for audit records. Each audit record format type must be covered, along with a brief description of each field. 7.1.9.1 "Audit Records" Table 11 "Auditable Events (Agent)" FAU_GEN.1.2(2) PP Origin: Agent Provides a format for audit records, and a brief description of each field. 7.1.9.1 "Audit Records" FAU_GEN.1/BT PP Origin: BT Evaluated in the same manner as defined by the Evaluation Activities for the claimed Base-PP. 7.1.9.1 "Audit Records" Table 12 "Auditable Events (BT)" FAU_GEN.1/VPN PP Origin: VPNC Describes the auditable events and the component that is responsible for each type of auditable event. 7.1.9.1 "Audit Records" Table 13 "Auditable Events (VPN)" Table 7.1.8.4.2 "IPsec General" FAU_GEN.1/WLAN PP Origin: WLANC Provides a format for audit records. Each audit record format type must be covered, along with a brief description of each field. 7.1.9.1 "Audit Records" FAU_SAR.1 There are no TSS evaluation activities for this SFR. Version: 1.1 Classification: Public Page 93 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference PP Origin: MDF FAU_SEL.1.1(2) PP Origin: Agent There is no TSS assurance activity for this SFR. FAU_STG.1.1 PP Origin: MDF There is no TSS assurance activity for this SFR. FAU_STG.1.2 PP Origin: MDF Lists the location of all logs and the access controls of those files such that unauthorized modification and deletion are prevented. 7.1.9.1 "Audit Records" FAU_STG.4.1 PP Origin: MDF Describes the size limits on the audit records, the detection of a full audit trail, and the action(s) taken by the TSF when the audit trail is full. The action(s) results in the deletion or overwrite of the oldest stored record. 7.1.9.1 "Audit Records" 7.1.5.2 "Configuration Profiles" FCS FCS_CKM.1 PP Origin: MDF, VPNC Identifies the key sizes supported by the TOE. If the ST specifies more than one scheme, it identifies the usage for each scheme. Table 22 "Explanation of usage for cryptographic functions in the cryptographic modules" FCS_CKM.1/VPN PP Origin: VPNC Describes how the key generation functionality is invoked. 7.1.8.4.3 "IPsec Characteristics" FCS_CKM.1/WPA PP Origin: WLANC Describes how the primitives defined and implemented by this EP are used by the TOE in establishing and maintaining secure connectivity to the wireless clients. Provides a description of the developer’s method(s) of assuring that their implementation conforms to the cryptographic standards; this includes not only testing done by the developing organization, but also any third-party testing that is performed. Describe how the implementation meets RFC 3526 section 3. 7.1.8.3 "Wireless LAN (WLAN)" A.2 "Wi-Fi Alliance Certificates" FCS_CKM.2.1/UNLOCKED PP Origin: MDF, VPNC Demonstrates that the supported key establishment schemes correspond to the key generation schemes identified in FCS_CKM.1.1. If the ST specifies more than one scheme, it identifies the usage for each scheme. 7.1.2.1 "Overview of Key Management" 7.1.2.2 "Password based key derivation" FCS_CKM.2.1/LOCKED PP Origin: MDF There is no TSS assurance activity for this SFR. FCS_CKM.2.1/WLAN PP Origin: WLANC Describes how the Group Temporal Key (GTK) is unwrapped prior to being installed for use on the TOE using the AES implementation specified in this EP. 7.1.8.3 "Wireless LAN (WLAN)" FCS_CKM_EXT.1 PP Origin: MDF Shows that a REK is supported by the TOE. 7.1.1.1 "The Secure Enclave Processor (SEP)" Version: 1.1 Classification: Public Page 94 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Includes a description of the protection provided by the TOE for a REK. Includes a description of the method of generation of a REK. Describes how any reading, import, and export of that REK is prevented. Describes how encryption/ decryption/derivation actions are isolated so as to prevent applications and system-level processes from reading the REK while allowing encryption/ decryption/derivation by the key. Describes how the OS is prevented from accessing the memory containing REK key material, which software is allowed access to the REK, how any other software in the execution environment is prevented from reading that key material, and what other mechanisms prevent the REK key material from being written to shared memory locations between the OS and the separate execution environment. If key derivation is performed using a REK, the TSS describes the key derivation function and the approved derivation mode and the key expansion algorithm according to FCS_CKM_EXT.3.2. Documents that the generation of a REK meets the FCS_RBG_EXT.1.1 and FCS_RBG_EXT.1.2 requirements. If REK(s) is/are generated on-device, the TSS shall include a description of the generation mechanism including what triggers a generation, how the functionality described by FCS_RBG_EXT.1 is invoked, and whether a separate instance of the RBG is used for REK(s). 7.1.2.1 "Overview of Key Management" Figure 5 "Key Hierarchy in the TOE OS" The proprietary Entropy Assessment Report (EAR) (on file with NIAP) has analyzed the random bit generator (RBG) used in the production environment for compliance to the requirements defined in FCS_RBG_EXT.1. FCS_CKM_EXT.2 PP Origin: MDF Describes how the functionality described by FCS_RBG_EXT.1 is invoked to generate DEKs. Figure 5 "Key Hierarchy in the TOE OS" 7.1.1 "Hardware Protection Functions" 7.1.2 "Cryptographic Support (FCS)" FCS_CKM_EXT.3 PP Origin: MDF Describes the formation of all key encryption keys (KEKs) and that the key sizes match those described by the ST author. Describes that each key (DEKs, software-based key storage, and KEKs) is encrypted by keys of equal or greater security strength using one of the selected methods. 7.1.2.1 "Overview of Key Management" Figure 5 "Key Hierarchy in the TOE OS" This RBG in the Secure Enclave has been analyzed for compliance with the requirements of FCS_RBG_EXT.1/ HW in the proprietary EAR, which has been provided to NIAP. Version: 1.1 Classification: Public Page 95 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference If a KDF is used, the evaluator shall ensure that the TSS includes a description of the key derivation function and shall verify the key derivation uses an approved derivation mode and key expansion algorithm according to SP800-108. FCS_CKM_EXT.4 PP Origin: MDF Lists each type of plaintext key material (DEKs, software-based key storage, KEKs, trusted channel keys, passwords, etc.) and its generation and storage location. Describes when each type of key material is cleared (for example, on system power off, on wipe function, on disconnection of trusted channels, when no longer needed by the trusted channel per the protocol, when transitioning to the locked state, and possibly including immediately after use, while in the locked state, etc.). Lists, for each type of key, the type of clearing procedure that is performed (cryptographic erase, overwrite with zeros, overwrite with random pattern, or block erase). If different types of memory are used to store the materials to be protected, the TSS describes the clearing procedure in terms of the memory in which the data are stored. 7.1.2.1 "Overview of Key Management" Table 20 "Summary of keys and persistent secrets in the TOE OS" Table 21 "Summary of keys and persistent secrets used by the MDM Agent" FCS_CKM_EXT.5 PP Origin: MDF Describes how the device is wiped; and the type of clearing procedure that is performed (cryptographic erase or overwrite) and, if overwrite is performed, the overwrite procedure (overwrite with zeros, overwrite three or more times by a different alternating pattern, overwrite with random pattern, or block erase). If different types of memory are used to store the data to be protected, the TSS describes the clearing procedure in terms of the memory in which the data are stored. 7.1.2.1 "Overview of Key Management" Figure 5 "Key Hierarchy in the TOE OS" FCS_CKM_EXT.6 PP Origin: MDF Contains a description regarding the salt generation, including which algorithms on the TOE require salts. The salt is generated using an RBG described in FCS_RBG_EXT.1. For PBKDF derivation of KEKs, this assurance activity may be performed in conjunction with FCS_CKM_EXT.3.2. 7.1.1 "Hardware Protection Functions" FCS_CKM_EXT.7 PP Origin: MDF See FCS_CKM_EXT.1 in this table. See FCS_CKM_EXT.1 in this table. Version: 1.1 Classification: Public Page 96 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FCS_CKM_EXT.8 PP Origin: BT Describes the criteria used to determine the frequency of generating new ECDH public/private key pairs and does not permit the use of static ECDH key pairs. 7.1.8.2 "Bluetooth" FCS_COP.1/ENCRYPT PP Origin: MDF, VPNC There is no TSS assurance activity for this SFR. FCS_COP.1/HASH PP Origin: MDF Documents the association of the hash function with other TSF cryptographic functions. 7.1.2 "Cryptographic Support (FCS)" FCS_COP.1/SIGN PP Origin: MDF There is no TSS assurance activity for this SFR. FCS_COP.1/KEYHMAC PP Origin: MDF Specifies the following values used by the keyed- hash message authentication code (HMAC) function: key length, hash function used, block size, and output MAC length used. If any manipulation of the key is performed in forming the submask that will be used to form the KEK, that process shall be described. Table 22 "Explanation of usage for cryptographic functions in the cryptographic modules" 7.1.2 "Cryptographic Support (FCS)" 7.1.3.8 "Keyed Hash" FCS_COP.1/CONDITION PP Origin: MDF Describes the method by which the password is first encoded and then fed to the SHA algorithm. Describes the settings for the algorithm (padding, blocking, etc.) and are supported by the selections in this component as well as the selections concerning the hash function itself. Describes how the output of the hash function is used to form the submask that will be input into the function and is the same length as the KEK as specified in FCS_CKM_EXT.3. 7.1.2.1 "Overview of Key Management" 7.1.2.2 "Password based key derivation" FCS_HTTPS_EXT.1 PP Origin: MDF There is no TSS assurance activity for this SFR. FCS_IPSEC_EXT.1.1 PP Origin: VPNC Describes how the IPsec capabilities are implemented and how a packet is processed. Details the relationship between the client and the underlying platform, including which aspects are implemented by the client, and those that are provided by the underlying platform. Describes how the client interacts with the platforms network stack. If the security policy database (SPD) is implemented by the client, then the TSS describes how the SPD is implemented and the rules for processing both inbound and outbound packets in terms of the IPsec policy. 7.1.8.4 "VPN" 7.1.8.4.1 "AlwaysOn VPN" 7.1.8.4.2 "IPsec General" Version: 1.1 Classification: Public Page 97 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Describes the rules that are available and the resulting actions available after matching a rule. Describes how the available rules and actions form the SPD using terms defined in RFC 4301 such as BYPASS, DISCARD, and PROTECT actions is sufficient to determine which rules will be applied given the rule structure implemented by the TOE. The description of rule processing (for both inbound and outbound packets) is sufficient to determine the action that will be applied, especially in the case where two different rules may apply. This description shall cover both the initial packets (that is, no security association (SA) is established on the interface or for that particular packet) as well as packets that are part of an established SA. If the SPD is implemented by the underlying platform, then the TSS describes how the client interacts with the platform to establish and populate the SPD, including the identification of the platform's interfaces that are used by the client. FCS_IPSEC_EXT.1.2 PP Origin: VPNC States that the VPN can be established to operate in tunnel mode and/or transport mode (as selected). 7.1.8.4 "VPN" 7.1.8.4.3 "IPsec Characteristics" FCS_IPSEC_EXT.1.3 PP Origin: VPNC Describes how a packet is processed against the SPD and that if no "rules" are found to match, that a final rule exists, either implicitly or explicitly, that causes the network packet to be discarded. 7.1.8.4 "VPN" 7.1.8.4.2 "IPsec General" FCS_IPSEC_EXT.1.4 PP Origin: VPNC States that the algorithms AES-GCM-128, AES- GCM-256, AES-CBC-128, and AES-CBC-256 are implemented. 7.1.8.4 "VPN" 7.1.8.4.3 "IPsec Characteristics" FCS_IPSEC_EXT.1.5 PP Origin: VPNC States that IKEv2 is implemented. 7.1.8.4 "VPN" 7.1.8.4.3 "IPsec Characteristics" FCS_IPSEC_EXT.1.6 PP Origin: VPNC Identifies the algorithms used for encrypting the IKEv2 payload (AES-CBC-128, AES-CBC-256, AES- GCM-128, AES-GCM-256). 7.1.8.4 "VPN" 7.1.8.4.3 "IPsec Characteristics" FCS_IPSEC_EXT.1.7 PP Origin: VPNC There is no TSS assurance activity for this SFR. FCS_IPSEC_EXT.1.8 PP Origin: VPNC Lists the supported DH groups. Describes how a particular DH group is specified/ negotiated with a peer. 7.1.8.4 "VPN" 7.1.8.4.3 "IPsec Characteristics" 7.1.8.4.5 "IKE" FCS_IPSEC_EXT.1.9 FCS_IPSEC_EXT.1.10 PP Origin: VPNC Describes, for each DH group supported, the process for generating "x" (as defined in FCS_IPSEC_EXT.1.9) and each nonce. 7.1.8.4 "VPN" 7.1.8.4.5 "IKE" Version: 1.1 Classification: Public Page 98 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Indicates that the random number generated that meets the requirements in this PP-Module is used, and that the length of "x" and the nonces meet the stipulations in the requirement. FCS_IPSEC_EXT.1.11 FCS_IPSEC_EXT.1.12 FCS_IPSEC_EXT.1.13 PP Origin: VPNC Identifies RSA and/or ECDSA as being used to perform peer authentication. Describes how the TOE compares the peer’s presented identifier to the reference identifier, including whether the certificate presented identifier is compared to the ID payload presented identifier, which field(s) of the certificate are used as the presented identifier (DN, Common Name, or SAN), and, if multiple fields are supported, the logical order comparison. If the ST author assigned an additional identifier type, the TSS description shall also include a description of that type and the method by which that type is compared to the peer's presented certificate. 7.1.8.4 "VPN" 7.1.8.4.3 "IPsec Characteristics" 7.1.8.4.4 "Peer authentication" FCS_IPSEC_EXT.1.14 PP Origin: VPNC Describes the potential strengths (in terms of the number of bits in the symmetric key) of the algorithms that are allowed for the IKE and ESP exchanges. Describes the checks that are done when negotiating IKEv2 CHILD_SA suites to ensure that the strength (in terms of the number of bits of key in the symmetric algorithm) of the negotiated algorithm is less than or equal to that of the IKE SA this is protecting the negotiation. 7.1.8.4 "VPN" 7.1.8.4.5 "IKE" FCS_IV_EXT.1 PP Origin: MDF Describes the encryption of all keys. Describes that the formation of the IVs for each key encrypted by the same KEK meets FCS_IV_EXT.1. 7.1.2.1 "Overview of Key Management" Figure 5 "Key Hierarchy in the TOE OS" FCS_RBG_EXT.1/HW FCS_RBG_EXT.1/SW PP Origin: MDF There is no TSS assurance activity for this SFR. A proprietary Entropy Assessment Report (EAR) has been produced and is on file with NIAP. FCS_SRV_EXT.1 PP Origin: MDF There is no TSS assurance activity for this SFR. FCS_STG_EXT.1 PP Origin: MDF Describes that the TOE implements the required secure key storage. Contains a description of the key storage mechanism that justifies the selection of “mutable hardware” or “software-based.” 7.1.2.1 "Overview of Key Management" 7.1.3.6 "Keychain Data Protection" Version: 1.1 Classification: Public Page 99 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FCS_STG_EXT.2 PP Origin: MDF Includes a key hierarchy description of the protection of each DEK for data at rest, of software- based key storage, of long-term trusted channel keys, and of KEK related to the protection of the DEKs, long-term trusted channel keys, and software-based key storage. This description includes a diagram of the hierarchy implemented by the TOE indicates how the functionality described by FCS_RBG_EXT.1 is invoked to generate DEKs (FCS_CKM_EXT.2), the key size (FCS_CKM_EXT.2 and FCS_CKM_EXT.3) for each key, how each KEK is formed (generated, derived, or combined according to FCS_CKM_EXT.3), the integrity protection method for each encrypted key (FCS_STG_EXT.3), and the IV generation for each key encrypted by the same KEK (FCS_IV_EXT.1). 7.1.2.1 "Overview of Key Management" Figure 5 "Key Hierarchy in the TOE OS" FCS_STG_EXT.2 PP Origin: MDF States in the key hierarchy description in that each DEK and software-stored key is encrypted according to FCS_STG_EXT.2. 7.1.2.1 "Overview of Key Management" Figure 5 "Key Hierarchy in the TOE OS" FCS_STG_EXT.3 PP Origin: MDF States in the key hierarchy description that each encrypted key is integrity protected according to one of the options in FCS_STG_EXT.3. 7.1.2.1 "Overview of Key Management" FCS_STG_EXT.4 PP Origin: Agent Lists each persistent secret (credential, secret key) and private key needed to meet the requirements in the ST, for what purpose it is used, and, for each platform listed as supported in the ST, how it is stored. States that the MDM Agent calls a platform- provided API to store persistent secrets and private keys. 7.1.2.1 "Overview of Key Management" 7.1.2.2 "Password based key derivation" 7.1.2.4 "Storage of Persistent Secrets and Private Keys by the MDM Agent" FCS_TLS_EXT.1 PP Origin: TLSPKG There is no TSS assurance activity for this SFR. FCS_TLSC_EXT.1.1 PP Origin: TLSPKG Provides a description of the implementation of this protocol in the TSS to ensure that the ciphersuites supported are specified and include those listed for this component. 7.1.8.1 "EAP-TLS and TLS" FCS_TLSC_EXT.1.2 PP Origin: TLSPKG Describes the client’s method of establishing all reference identifiers from the application- configured reference identifier, including which types of reference identifiers are supported and whether IP addresses and wildcards are supported. Identifies whether and the manner in which certificate pinning is supported or used by the TOE. 7.1.8.1 "EAP-TLS and TLS" FCS_TLSC_EXT.1.3 PP Origin: TLSPKG Describes how and when user or administrator authorization is obtained. 7.1.8.1 "EAP-TLS and TLS" Version: 1.1 Classification: Public Page 100 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Describes any mechanism for storing such authorizations, such that future presentation of such otherwise-invalid certificates permits establishment of a trusted channel without user or administrator action. FCS_TLSC_EXT.1/WLAN PP Origin: WLANC Describes the implementation of this protocol in the TSS to ensure that the ciphersuites supported are specified. The ciphersuites specified include those listed for this component. 7.1.4.2 "X.509v3 Certificates" 7.1.8.1 "EAP-TLS and TLS" FCS_TLSC_EXT.2 PP Origin: TLSPKG Describes for FIA_X509_EXT.2.1 the use of client- side certificates for TLS mutual authentication. Describes any factors beyond configuration that are necessary in order for the client to engage in mutual authentication using X.509v3 certificates. 7.1.8.1.1 "TLS mutual authentication" 7.1.4.2 "X.509v3 Certificates" FCS_TLSC_EXT.4 PP Origin: TLSPKG There is no TSS assurance activity for this SFR. FCS_TLSC_EXT.5 PP Origin: TLSPKG Describes the Supported Groups Extension. 7.1.8.1 "EAP-TLS and TLS" FCS_WPA_EXT.1 PP Origin: WLANC There are no TSS evaluation activities for this SFR. FDP FDP_ACF_EXT.1.1 PP Origin: MDF Lists all system services available for use by an application. Describes how applications interface with these system services, and the means by which these system services are protected by the TSF. Describes which of the following categories each system service falls in. ● No applications are allowed access ● Privileged applications are allowed access ● Applications are allowed access by user authorization ● All applications are allowed access Describes how privileges are granted to third-party applications. Describes for both types of privileged applications, how and when the privileges are verified and how the TSF prevents unprivileged applications from accessing those services. 7.1.3.1 "Protection of Files" 7.1.3.2 "Application Access to Files" 7.1.3.5 "Restricting Applications Access to Services" Version: 1.1 Classification: Public Page 101 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Identifies for any services for which the user may grant access, whether the user is prompted for authorization when the application is installed, or during runtime. FDP_ACF_EXT.1.2 PP Origin: MDF Describes which data sharing is permitted between applications, which data sharing is not permitted, and how disallowed sharing is prevented. 7.1.3.1 "Protection of Files" 7.1.3.2 "Application Access to Files" 7.1.3.5 "Restricting Applications Access to Services" FDP_ACF_EXT.2 PP Origin: MDF There is no TSS assurance activity for this SFR. FDP_DAR_EXT.1 PP Origin: MDF Indicates which data is protected by the DAR implementation and what data is considered TSF data. This data includes all protected data. 7.1.2.1 "Overview of Key Management" 7.1.3.6 "Keychain Data Protection" Figure 5 "Key Hierarchy in the TOE OS" FDP_DAR_EXT.2.1 PP Origin: MDF Describes which data stored by the TSF is treated as sensitive. Describes the mechanism that is provided for applications to use to mark data and keys as sensitive. Contains information reflecting how data and keys marked in this manner are distinguished from data and keys that are not. 7.1.3.6 "Keychain Data Protection" Table 23 "Keychain to File-system Mapping" FDP_DAR_EXT.2.2 PP Origin: MDF Describes the process of receiving sensitive data while the device is in a locked state. Indicates if sensitive data that may be received in the locked state are treated differently than sensitive data that cannot be received in the locked state. Describes the key scheme for encrypting and storing the received data, which must involve an asymmetric key and must prevent the sensitive data at rest from being decrypted by wiping all key material used to derive or encrypt the data. 7.1.3.6 "Keychain Data Protection" Table 23 "Keychain to File-system Mapping" FDP_DAR_EXT.2.3 PP Origin: MDF Includes the symmetric encryption keys in the key hierarchy section for (DEKs) used to encrypt sensitive data. Includes the protection of any private keys of the asymmetric pairs. 7.1.3.6 "Keychain Data Protection" Table 23 "Keychain to File-system Mapping" Version: 1.1 Classification: Public Page 102 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Describes that any private keys that are not wiped and are stored by the TSF are stored encrypted by a key encrypted with (or chain to a KEK encrypted with) the REK and password-derived or biometric- unlocked KEK. FDP_DAR_EXT.2.4 PP Origin: MDF Includes a description of the actions taken by the TSF for the purposes of DAR upon transitioning to the unlocked state. Describes that these actions minimally include decrypting all received data using the asymmetric key scheme and re-encrypting with the symmetric key scheme used to store data while the device is unlocked. 7.1.3.6 "Keychain Data Protection" Table 23 "Keychain to File-system Mapping" FDP_IFC_EXT.1 PP Origin: MDF, VPNC Describes the routing of IP traffic through processes on the TSF when a VPN client is enabled. Indicates which traffic does not go through the VPN and which traffic does and that a configuration exists for each baseband protocol in which only the traffic identified by the ST author as necessary for establishing the VPN connection (IKE traffic and perhaps HTTPS or DNS traffic) or needed for the correct functioning of the TOE is not encapsulated by the VPN protocol (IPsec). Describes any differences in the routing of IP traffic when using any supported baseband protocols (e.g. Wi-Fi or, LTE). 7.1.8.4.1 "AlwaysOn VPN" FDP_RIP.2 PP Origin: VPNC Describes (for each supported platform) the extent to which the client processes network packets and addresses the FDP_RIP.2 requirement. 7.1.8.4.6 "Residual information protection and packet processing" FDP_STG_EXT.1 PP Origin: MDF Describes the Trust Anchor Database implemented that contain certificates used to meet the requirements of this PP. Contains information pertaining to how certificates are loaded into the store, and how the store is protected from unauthorized access in accordance with the permissions established in FMT_SMF.1 and FMT_MOF_EXT.1. 7.1.4.2 "X.509v3 Certificates" FDP_UPC_EXT.1/APPS PP Origin: MDF Describes that all protocols listed in the TSS are specified and included in the requirements in the ST. 7.1.8 "Trusted Path/Channels (FTP)" FDP_UPC_EXT.1/ BLUETOOTH PP Origin: MDF Describes that all protocols listed in the TSS are specified and included in the requirements in the ST. 7.1.8 "Trusted Path/Channels (FTP)" FDP_VPN_EXT.1 PP Origin: VPNC Describes the routing of IP traffic through processes on the TSF when a VPN client is enabled. 7.1.8.4.1 "AlwaysOn VPN" Version: 1.1 Classification: Public Page 103 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Describes which traffic does not go through the VPN and which traffic does and that a configuration exists for each baseband protocol in which only the traffic identified by the ST author is necessary for establishing the VPN connection (IKE traffic and perhaps HTTPS or DNS traffic) is not encapsulated by the VPN protocol (IPsec). Describes any differences in the routing of IP traffic when using any supported baseband protocols (e.g. Wi-Fi or LTE). FIA FIA_AFL_EXT.1 PP Origin: MDF Describes that a value corresponding to the number of unsuccessful authentication attempts since the last successful authentication is kept for each Authentication Factor interface. Describes if and how this value is maintained when the TOE loses power, either through a graceful powered off or an ungraceful loss of power and that if the value is not maintained, the interface is after another interface in the boot sequence for which the value is maintained. If the TOE supports multiple authentication mechanisms, the description also includes how the unsuccessful authentication attempts for each mechanism selected in FIA_UAU.5.1 is handled. Describes if each authentication mechanism utilizes its own counter or if multiple authentication mechanisms utilize a shared counter. If multiple authentication mechanisms utilize a shared counter, the evaluator shall verify that the TSS describes this interaction. Describes how the process used to determine if the authentication attempt was successful and that that the counter would be updated even if power to the device is cut immediately following notifying the TOE user if the authentication attempt was successful or not. 7.1.5.2 "Configuration Profiles" 7.1.4 "Identification and Authentication (FIA)" FIA_BLT_EXT.1 PP Origin: BT Describes when user permission is required for Bluetooth pairing, and that this description mandates explicit user authorization via manual input for all Bluetooth pairing, including application use of the Bluetooth trusted channel and situations where temporary (non-bonded) connections are formed. 7.1.8.2 "Bluetooth" FIA_BLT_EXT.2 PP Origin: BT Describes how data transfer of any type is prevented before the Bluetooth pairing is completed. 7.1.8.2 "Bluetooth" Version: 1.1 Classification: Public Page 104 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Specifically calls out any supported radio frequency communication (RFCOMM) and L2CAP data transfer mechanisms FIA_BLT_EXT.3 PP Origin: BT Describes how Bluetooth connections are maintained such that two devices with the same Bluetooth device address are not simultaneously connected and such that the initial connection is not superseded by any following connection attempts. 7.1.8.2 "Bluetooth" FIA_BLT_EXT.4 PP Origin: BT There is no TSS assurance activity for this SFR. FIA_BLT_EXT.6 PP Origin: BT Describes all Bluetooth profiles and associated services for which explicit user authorization is required before a remote device can gain access. Describes any difference in behavior based on whether or not the device has a trusted relationship with the TOE for that service (i.e. whether there are any services that require explicit user authorization for untrusted devices that do not require such authorization for trusted devices). Describes the method by which a device can become 'trusted'. 7.1.8.2 "Bluetooth" FIA_BLT_EXT.7 PP Origin: BT See FIA_BLT_EXT.6.1. See FIA_BLT_EXT.6.1. FIA_ENR_EXT.2 PP Origin: Agent Describes which types of reference identifiers are acceptable and how the identifier is specified. 7.1.4.3 "MDM Server Reference ID" Table 24 "MDM Server Reference Identifiers" FIA_MBE_EXT.1 PP Origin: BIO Explains how the TOE meets FIA_MBE_EXT.1 at high level description and describes how the TOE enrols a user. 7.1.5.3 "Biometric Authentication Factors (BAFs)" FIA_MBE_EXT.2 PP Origin: BIO Explains how the TOE meets FIA_MBE_EXT.2 at high level description. If standard quality metrics are selected and assigned, the TSS shall include information (e.g. name of quality metrics and section numbers that define the metrics in the standard) to identify quality metrics that the TOE implements. If a developer defined quality assessment is selected, the TSS shall include an overview of the quality metrics used for the assessment. Between the TSS and the Biometric Management Design (BMD), describes how the TOE generates templates of sufficient quality from samples at enrolment. 7.1.4.1.2 "Biometric Sample Quality" Version: 1.1 Classification: Public Page 105 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FIA_MBV_EXT.1 PP Origin: BIO Explains how the TOE meets FIA_MBV_EXT.1 at high level description and, between the TSS and the Biometric Management Design (BMD), describes how the TOE verifies a user with one's biometric characteristics. 7.1.5.3 "Biometric Authentication Factors (BAFs)" 7.1.4.1.1 "Accuracy of Biometric Authentication" FIA_MBV_EXT.2 PP Origin: BIO Explains how the TOE meets FIA_MBV_EXT.2 at high level description. If standard quality metrics are selected and assigned, it includes information (e.g. name of quality metrics and section numbers that define the metrics in the standard) to identify quality metrics that the TOE implements. If a developer defined quality assessment is selected, it includes an overview of the quality metrics used for the assessment. Between the TSS and the Biometric Management Design (BMD), describes how the TOE checks the quality of the samples captured. 7.1.4.1.2 "Biometric Sample Quality" FIA_PAE_EXT.1 PP Origin: WLANC There is no TSS assurance activity for this SFR. The TOE conforms to IEEE Standard 802.1X for a Port Access Entity (PAE) in the “Supplicant” role. FIA_PMG_EXT.1 PP Origin: MDF There is no TSS assurance activity for this SFR. FIA_TRT_EXT.1 PP Origin: MDF Describes the method by which authentication attempts are not able to be automated. Describes either how the TSF disables authentication via external interfaces (other than the ordinary user interface) or how authentication attempts are delayed in order to slow automated entry and shall ensure that this delay totals at least 500 milliseconds over 10 attempts for all authentication mechanisms selected in FIA_UAU.5.1. 7.1.4 "Identification and Authentication (FIA)" FIA_UAU.5 PP Origin: MDF Describes each mechanism provided to support user authentication and the rules describing how the authentication mechanism(s) provide authentication. 7.1.4 "Identification and Authentication (FIA)" FIA_UAU.6/CREDENTIAL PP Origin: MDF There is no TSS assurance activity for this SFR. FIA_UAU.6/LOCKED PP Origin: MDF There is no TSS assurance activity for this SFR. FIA_UAU.7 PP Origin: MDF Describes the means of obscuring the authentication entry, for all authentication methods specified in FIA_UAU.5.1. 7.1.4 "Identification and Authentication (FIA)" Version: 1.1 Classification: Public Page 106 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FIA_UAU_EXT.1 PP Origin: MDF Describes the process for decrypting protected data and keys and that this process requires the user to enter a Password Authentication Factor and, in accordance with FCS_CKM_EXT.3, derives a KEK, which is used to protect the software-based secure key storage and (optionally) DEK(s) for sensitive data, in accordance with FCS_STG_EXT.2. 7.1.2.1 "Overview of Key Management" FIA_UAU_EXT.2 PP Origin: MDF Describes the actions allowed by unauthorized users in the locked state. 7.1.4 "Identification and Authentication (FIA)" FIA_X509_EXT.1 PP Origin: MDF FIA_X509_EXT.1/WLAN PP Origin: WLANC Describes where the check of validity of the certificates takes place. Describes the certificate path validation algorithm. 7.1.4.2 "X.509v3 Certificates" FIA_X509_EXT.2 PP Origin: MDF, VPNC Describes how the TOE chooses which certificates to use, and any necessary instructions in the administrative guidance for configuring the operating environment so that the TOE can use the certificates. Describes the behavior of the TOE when a connection cannot be established during the validity check of a certificate used in establishing a trusted channel. Describes any distinctions between trusted channels. 7.1.4.2 "X.509v3 Certificates" FIA_X509_EXT.2/WLAN PP Origin: WLANC Describes how the TOE chooses which certificates to use, and any necessary instructions in the administrative guidance for configuring the operating environment so that the TOE can use the certificates. Describes any distinctions between trusted channels. 7.1.8.3 "Wireless LAN (WLAN)" FIA_X509_EXT.3 PP Origin: MDF There is no TSS assurance activity for this SFR. FIA_X509_EXT.6 PP Origin: WLANC Describes all certificate stores implemented that contain certificates used to meet the requirements of this PP-Module. The description shall contain information pertaining to how certificates are loaded into the store, and how the store is protected from unauthorized access. 7.1.4.2 "X.509v3 Certificates" FMT FMT_MOF_EXT.1.1 PP Origin: MDF Describes those management functions that may only be performed by the user and that the TSS does not include an administrator API for any of these management functions. Table 15 "Management Functions (MDF/VPNC)" Version: 1.1 Classification: Public Page 107 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FMT_MOF_EXT.1.2 PP Origin: MDF Describes those management functions that may be performed by the administrator, including how the user is prevented from accessing, performing, or relaxing the function (if applicable), and how applications/APIs are prevented from modifying the Administrator configuration. Describes any functionality that is affected by administrator-configured policy and how. Table 15 "Management Functions (MDF/VPNC)" 7.1.5.2 "Configuration Profiles" FMT_POL_EXT.2.1 PP Origin: Agent Describes how the candidate policies are obtained by the MDM Agent; the processing associated with verifying the digital signature of the policy updates; and the actions that take place for successful (signature was verified) and unsuccessful (signature could not be verified) cases. Identifies the software components that are performing the processing. 7.1.5.2 "Configuration Profiles" FMT_POL_EXT.2.2 PP Origin: Agent See FIA_X509_EXT.1.1 and FIA_X509_EXT.2.1 See FIA_X509_EXT.1.1 and FIA_X509_EXT.2.1 Describes all management functions, what role(s) can perform each function, and how these functions are (or can be) restricted to the roles identified by FMT_MOF_EXT.1. 7.1.5 "Specification of Management Functions (FMT)" Table 15 "Management Functions (MDF/VPNC)" Function 1: Defines the allowable policy options: the range of values for both password length and lifetime, and a description of complexity to include character set and complexity policies. 7.1.4 "Identification and Authentication (FIA)" 7.1.5.2 "Configuration Profiles" Function 2: Defines the range of values for both timeout period and number of authentication failures for all supported authentication mechanisms. 7.1.4 "Identification and Authentication (FIA)" 7.1.5.2 "Configuration Profiles" Function 3: There is no TSS assurance activity for this SFR. Function 4: Describes each radio and an indication of if the radio can be enabled/disabled along with what role can do so. Describes the frequency ranges at which each radio operates is included in the TSS. Describes the point in the boot sequence the radios are powered on and indicates if the radios are used as part of the initialization of the device. 7.1.5.5 "Radios" Appendix A.1 "Devices Covered by this Evaluation" Table 15 "Management Functions (MDF/VPNC)" FMT_SMF.1 PP Origin: MDF, VPNC Function 5: 7.1.5.2 "Configuration Profiles" Version: 1.1 Classification: Public Page 108 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Describes each collection device and an indication if it can be enabled/disabled along with what role can do so. 7.1.5.6 "Audio and Visual collection devices" Table 15 "Management Functions (MDF/VPNC)" Function 6: There is no TSS assurance activity for this function. Function 7: There is no TSS assurance activity for this function. Function 8: Describes the allowable application installation policy options based on the selection included in the ST. 7.1.5.2 "Configuration Profiles" Function 9: Describes each category of keys/secrets that can be imported into the TSF's secure key storage. 7.1.2.1 "Overview of Key Management" Table 20 "Summary of keys and persistent secrets in the TOE OS" Function 10: See Function 9 See Function 9 Function 11: There is no TSS assurance activity for this function. Function 12: Describes each additional category of X.509 certificates and their use within the TSF. 7.1.4.2 "X.509v3 Certificates" Function 13: Describes each management function that will be enforced by the enterprise once the device is enrolled. 7.1.5.2 "Configuration Profiles" Function 14: Indicates which applications can be removed along with what role can do so 7.1.5.2 "Configuration Profiles" Function 15: There is no TSS assurance activity for this function. Function 16: There is no TSS assurance activity for this function. Function 17: There is no TSS assurance activity for this function. Function 18: There is no TSS assurance activity for this function. Version: 1.1 Classification: Public Page 109 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Function 19: There is no TSS assurance activity for this function. Function 20: There is no TSS assurance activity for this function. 7.1.5.2 "Configuration Profiles" Function 21: There is no TSS assurance activity for this function. Function 22: States if the TOE supports a BAF. Describes the procedure to enable/disable the BAF. 7.1.5.3 "Biometric Authentication Factors (BAFs)" Function 23: There is no TSS assurance activity for this function. Function 28 There is no TSS assurance activity for this function. Function 30: There is no TSS assurance activity for this function. Function 32: There is no TSS assurance activity for this function. Function 36: Describes any restrictions in banner settings. 7.1.7.3 "Lock Screen/Access Banner Display" Function 37: There is no TSS assurance activity for this function. Function 44: There is no TSS assurance activity for this function. Function 45: Contains guidance to configure the VPN as Always- On. 7.1.8.4.1 "AlwaysOn VPN" Function 47: Describes all assigned security management functions and their intended behavior. 7.1.5.2 "Configuration Profiles" 7.1.5.6 "Audio and Visual collection devices" Describes the Bluetooth profiles and services supported and the Bluetooth security modes and levels supported by the TOE. 7.1.8.2 "Bluetooth" FMT_SMF_EXT.1/BT PP Origin: BT Function BT-1: There is no TSS assurance activity for this function. Version: 1.1 Classification: Public Page 110 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FMT_SMF.1/VPN PP Origin: VPNC Describes the client credentials and how they are used by the TOE. 7.1.5.7 "VPN Certificate Credentials" 7.1.8.4.4 "Peer authentication" FMT_SMF.1/WLAN PP Origin: WLANC There is no TSS assurance activity for this SFR. FMT_SMF_EXT.2 PP Origin: MDF Describes all available remediation actions, when they are available for use, and any other administrator-configured triggers, and how the remediation actions are provided to the administrator. 7.1.2.1 "Overview of Key Management" 7.1.5.4 "Device Unenrollment" FMT_SMF_EXT.4.1 PP Origin: Agent Describes the any assigned functions and that these functions are documented as supported by the platform. Lists any differences between management functions and policies for each supported mobile device. 7.1.5.1 "Device Enrollment" FMT_SMF_EXT.4.2 PP Origin: Agent Describes the methods in which the MDM Agent can be enrolled. Makes clear if the MDM Agent supports multiple interfaces for enrollment and configuration. 7.1.5.1 "Device Enrollment" 7.1.5.4 "Device Unenrollment" FMT_UNR_EXT.1 PP Origin: Agent Describes the mechanism used to prevent users from unenrolling or the remediation actions applied when unenrolled. 7.1.5.4 "Device Unenrollment" FPT FPT_AEX_EXT.1 PP Origin: MDF Describes how the 8 bits are generated and provides a justification as to why those bits are unpredictable. 7.1.6.5 "Domain Isolation" FPT_AEX_EXT.2 PP Origin: MDF Describes of the memory management unit (MMU), and documents the ability of the MMU to enforce read, write, and execute permissions on all pages of virtual memory. 7.1.6.5 "Domain Isolation" FPT_AEX_EXT.3 PP Origin: MDF Describes the stack-based buffer overflow protections implemented in the TSF software which runs in the non-privileged execution mode of the application processor. Contains an inventory of TSF binaries and libraries, indicating those that implement stack-based buffer overflow protections as well as those that do not. It provides a rationale for those binaries and libraries that are not protected in this manner. 7.1.6.5 "Domain Isolation" 7.1.6.8 "Inventory of TSF Binaries and Libraries" FPT_AEX_EXT.4 PP Origin: MDF Describes the mechanisms that are in place that prevents non-TSF software from modifying the TSF software or TSF data that governs the behavior of the TSF. 7.1.6.5 "Domain Isolation" Version: 1.1 Classification: Public Page 111 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Describes how the TSF ensures that the address spaces of applications are kept separate from one another. If no Unstructured Supplementary Service Data (USSD) or Man-Machine Interface (MMI) codes are available, description of the method by which actions prescribed by these codes are prevented. Documents any TSF data which may be accessed and modified over a wired interface in auxiliary boot modes. Describes data, which is modified in support of update or restore of the device. Describes the means by which unauthorized and undetected modification (that is, excluding cryptographically verified updates per FPT_TUD_EXT.2) of the TSF data over the wired interface in auxiliary boots modes is prevented. FPT_BDP_EXT.1 PP Origin: BIO Explains how the TOE meets FPT_BDP_EXT.1 at high level description. Contains the following: a. All TSF modules and physical interconnections are within the defined boundary of the SEE and any entities outside the SEE including the main computer operating system can’t interfere with transmission between and processing of these modules. b. All plaintext biometric data (whether generated by the biometric capture sensor or by the evaluation processes of the TSF) is retained in volatile memory within the SEE and any entities outside the SEE including the main computer operating system can’t access these data. Any TSFIs which may exist, do not reveal plaintext biometric data to any entities outside the SEE. The evaluator shall examine TSFIs of TSF modules provided by the biometric capture sensor (e.g. SDK) because they may include testing or debug codes and the developer who integrated the sensor into the TOE may apply changes to those modules. 7.1.5.3 "Biometric Authentication Factors (BAFs)" 7.1.2.3 "No plaintext key transmission and export" FPT_JTA_EXT.1 PP Origin: MDF Explains the location of the Joint Test Action Group (JTAG) ports on the TSF, to include the order of the ports (i.e. Data In, Data Out, Clock, etc.). Describes how access to the JTAG is controlled by a signing key. 7.1.6.2 "Joint Test Action Group (JTAG) Disablement" Version: 1.1 Classification: Public Page 112 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Describes when the JTAG can be accessed, i.e. what has the access to the signing key. FPT_KST_EXT.1 PP Origin: MDF, BIO Contains a description of the activities that happen on power-up and password authentication relating to the decryption of DEKs, stored keys, and data. Describes how the cryptographic functions in the cryptographic support (FCS) requirements are being used to perform the encryption functions, including how the KEKs, DEKs, and stored keys are unwrapped, saved, and used by the TOE so as to prevent plaintext from being written to non-volatile storage. Describes, for each power-down scenario how the TOE ensures that all keys in non-volatile storage are not stored in plaintext. Describes how other functions available in the system ensure that no unencrypted key material is present in persistent storage. Describes that key material is not written unencrypted to the persistent storage. For each BAF selected in FIA_UAU.5.1, describes the activities that happen on biometric authentication, relating to the decryption of DEKs, stored keys, and data. In addition, how the system ensures that the biometric keying material is not stored unencrypted in persistent storage. 7 "TOE Summary Specification" 7.1.2.1 "Overview of Key Management" 7.1.1.1 "The Secure Enclave Processor (SEP)" FPT_KST_EXT.2 PP Origin: MDF, BIO Describes the TOE security boundary. Contains a description of the activities that happen on power-up and password authentication relating to the decryption of DEKs, stored keys, and data. Describes how other functions available in the system ensure that no unencrypted key material is transmitted outside the security boundary of the TOE. Describes that key material is not transmitted outside the security boundary of the TOE. For each BAF selected in FIA_UAU.5.1 contains a description of the activities that happen on biometric authentication, including how any plaintext material, including critical security parameters and results of biometric algorithms, are protected and accessed. Describes how functions available in the biometric algorithms ensure that no unencrypted plaintext material, including critical security parameters and intermediate results, is transmitted outside the 7 "TOE Summary Specification" 7.1.2.1 "Overview of Key Management" 7.1.2.3 "No plaintext key transmission and export" 7.1.1.1 "The Secure Enclave Processor (SEP)" Version: 1.1 Classification: Public Page 113 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference security boundary of the TOE or to other functions or systems that transmit information outside the security boundary of the TOE. FPT_KST_EXT.3 PP Origin: MDF Provides a statement of their policy for handling and protecting keys. Describes a policy in line with not exporting either plaintext DEKs, KEKs, or keys stored in the secure key storage. 7.1.1.1 "The Secure Enclave Processor (SEP)" 7.1.2.3 "No plaintext key transmission and export" FPT_NOT_EXT.1 PP Origin: MDF Describes critical failures that may occur and the actions to be taken upon these critical failures. 7.1.6.9 "Self-Tests" FPT_PBT_EXT.1 PP Origin: BIO Explains how the TOE meets FPT_PBT_EXT.1 at high level description. Between the TSS and guidance, identify any TSFI through which the user can access (e.g. revoke) the templates and that those TSFI require the use of a Non-Biometric Authentication Factor (NBAF). 7.1.5.3 "Biometric Authentication Factors (BAFs)" FPT_STM.1 PP Origin: MDF Lists each security function that makes use of time. Describes how the time is maintained and considered reliable in the context of each of the time related functions. Identifies whether the TSF uses an NTP server or the carrier’s network time as the primary time sources. 7.1.6.7 "Time" FPT_TST_EXT.1 PP Origin: MDF Specifies the self-tests that are performed at start- up. This description must include an outline of the test procedures conducted by the TSF. Includes any error states that they TSF may enter when self-tests fail, and the conditions and actions necessary to exit the error states and resume normal operation Indicates these self-tests are run at start-up automatically, and do not involve any inputs from or actions by the user or operator. The self-tests include algorithm self-tests. The algorithm self-tests will typically be conducted using known answer tests. 7.1.6.9 "Self-Tests" FPT_TST_EXT.1/VPN PP Origin: VPNC Details the self-tests that are run by the TSF on start-up; this description includes an outline of what the tests are actually doing and makes an argument that the tests are sufficient to demonstrate that the TSF is operating correctly. 7.1.6.9 "Self-Tests" describes in detail the self-tests that are run by the TSF on start-up Version: 1.1 Classification: Public Page 114 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference Identifies and describes any of the tests that are performed by the TOE platform, describes how the integrity of stored TSF executable code is cryptographically verified when it is loaded for execution. Makes an argument that the tests are sufficient to demonstrate that the integrity of stored TSF executable code has not been compromised. Describes the actions that take place for successful (e.g. hash verified) and unsuccessful (e.g., hash not verified) cases. FPT_TST_EXT.2/ PREKERNEL FPT_TST_EXT.2/ POSTKERNEL FPT_TST_EXT.3 PP Origin: MDF Describes the boot procedures, including a description of the entire bootchain, of the software for the TSF’s Application Processor. Describes that before loading the bootloader(s) for the operating system and the kernel, all bootloaders and the kernel software itself is cryptographically verified. For each additional category of executable code verified before execution, describes how that software is cryptographically verified. Contains a justification for the protection of the cryptographic key or hash, preventing it from being modified by unverified or unauthenticated software. Describes the protection afforded to the mechanism performing the cryptographic verification. 7.1.6.1 "Secure Boot" FPT_TST_EXT.3/WLAN PP Origin: WLANC Details the self-tests that are run by the TSF on start-up; this description includes an outline of what the tests are actually doing (e.g., rather than saying "memory is tested", a description similar to "memory is tested by writing a value to each memory location and reading it back to ensure it is identical to what was written" shall be used). Makes an argument that the tests are sufficient to demonstrate that the TSF is operating correctly. Describes how to verify the integrity of stored TSF executable code when it is loaded for execution. Makes an argument that the tests are sufficient to demonstrate that the integrity of stored TSF executable code has not been compromised. The evaluator also ensures that the TSS (or the operational guidance) describes the actions that take place for successful (e.g. hash verified) and unsuccessful (e.g., hash not verified) cases. 7.1.6.9 "Self-Tests" FPT_TUD_EXT.1 PP Origin: MDF There is no TSS assurance activity for this SFR. Version: 1.1 Classification: Public Page 115 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FPT_TUD_EXT.2 PP Origin: MDF Describes all TSF software update mechanisms for updating the system software. Includes a description of the digital signature verification of the software before installation and that installation fails if the verification fails. All software and firmware involved in updating the TSF is described and, if multiple stages and software are indicated, that the software/firmware responsible for each stage is indicated and that the stage(s) which perform signature verification of the update are identified. Describes the method by which the digital signature is verified and that the public key used to verify the signature is either hardware-protected or is validated to chain to a public key in the Trust Anchor Database. If hardware-protection is selected, the method of hardware-protection is described and the justification why the public key may not be modified by unauthorized parties. Describes that software updates to system software running on other processors (i.e., SEP) is verified, the evaluator shall verify that these other processors are listed in the TSS and that the description includes the software update mechanism for these processors, if different than the update. 7.1.6.3 "Secure Software Update" FPT_TUD_EXT.3 PP Origin: MDF Describes how mobile application software is verified at installation and uses a digital signature. 7.1.6.9.4 "Application integrity" FPT_TUD_EXT.4 PP Origin: MDF See FPT_TUD_EXT.2.3 and FPT_TUD_EXT.4.1. See FPT_TUD_EXT.2.3 and FPT_TUD_EXT.4.1. FPT_TUD_EXT.5 PP Origin: MDF Describes how mobile application software is verified at installation using a digital signature by a code signing certificate. 7.1.4.2 "X.509v3 Certificates" FPT_TUD_EXT.6 PP Origin: MDF Describes the mechanism that prevents the TSF from installing software updates that are an older version that the currently installed version. 7.1.6.3 "Secure Software Update" FTA FTA_SSL_EXT.1 PP Origin: MDF Describes the actions performed upon transitioning to the locked state. Describes the information allowed to be displayed to unauthorized users. 7.1.6.6 "Device Locking" 7.1.5.2 "Configuration Profiles" 7.1.2.1 "Overview of Key Management" FTA_TAB.1 PP Origin: MDF Describes when the banner is displayed. 7.1.7.3 "Lock Screen/Access Banner Display" Version: 1.1 Classification: Public Page 116 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FTA_WSE_EXT.1 PP Origin: WLANC Specifically defines all of the attributes that can be used to specify acceptable networks (access points). 7.1.7.2 "Restricting Access to Wireless Networks" FTP FTP_BLT_EXT.1 PP Origin: BT Describes the use of encryption, the specific Bluetooth protocol(s) it applies to, and whether it is enabled by default. 7.1.8.2 "Bluetooth" FTP_BLT_EXT.2 PP Origin: BT Describes the TSF's behavior if a remote device stops encryption while connected to the TOE. 7.1.8.2 "Bluetooth" FTP_BLT_EXT.3/BR PP Origin: BT Specifies the minimum key size for BR/EDR encryption, whether this value is configurable, and the mechanism by which the TOE will not negotiate keys sizes smaller than the minimum. 7.1.8.2 "Bluetooth" FTP_BLT_EXT.3/LE PP Origin: BT Specifies the minimum key size for LE encryption, whether this value is configurable, and the mechanism by which the TOE will not negotiate keys sizes smaller than the minimum. 7.1.8.2 "Bluetooth" FTP_ITC.1/WLAN PP Origin: WLANC Describes the details of the TOE connecting to an access point in terms of the cryptographic protocols specified in the requirement, along with TOE- specific options or procedures that might not be reflected in the specification. All protocols listed in the TSS are specified and included in the requirements in the ST. 7.1.8.3 "Wireless LAN (WLAN)" 7.1.8.1 "EAP-TLS and TLS" FTP_ITC_EXT.1 PP Origin: MDF, VPNC Describes the details of the TOE connecting to access points, VPN Gateways, and other trusted IT products in terms of the cryptographic protocols specified in the requirement, along with TOE- specific options or procedures that might not be reflected in the specifications. All protocols listed in the TSS are specified and included in the requirements in the ST. If OTA updates are selected, the TSS shall describe which trusted channel protocol is initiated by the TOE and is used for updates. Table 29 "Protocols used for trusted channels" 7.1.6.3 "Secure Software Update" FTP_ITC_EXT.1(2) PP Origin: Agent The TSS indicates the methods of MDM Agent- Server communication along with how those communications are protected. Describes that all protocols listed in the TSS in support of remote TOE administration are consistent with those specified in the requirement, and are included in the requirements in the ST. 7.1.4.2 "X.509v3 Certificates" 7.1.4.3 "MDM Server Reference ID" Version: 1.1 Classification: Public Page 117 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR TSS Requirements from Assurance Activities TSS Section/Reference FTP_TRP.1(2) PP Origin: Agent Specifies that for mobile device enrollment, the mobile device initiates a connection over HTTPS to the MDM server. 7.1.4.3 "MDM Server Reference ID" 7.1 TOE Security Functionality 7.1.1 Hardware Protection Functions 7.1.1.1 The Secure Enclave Processor (SEP) The SEP, which is part of the Secure Enclave, is a coprocessor fabricated in all of the Apple processors listed in Appendix A.1 "Devices Covered by this Evaluation". It utilizes its own secure boot and personalized software update separate from the application processor. It provides all cryptographic operations for Data Protection key management and maintains the integrity of Data Protection even if the kernel has been compromised. The SEP execution environment shares the main random access memory (RAM) with the application processor. The memory controller provides memory separation between the two processors by distinguishing between the origin of memory fetch or store requests performed by the processors. In addition, the memory controller encrypts/obfuscates (using AES-XEX) all SEP data in RAM using a key shared only between the SEP and the memory controller. This adds an additional level of protection between the SEP memory and the application processor. If the memory separation between the two processors were violated to where the application processor could access the SEP RAM, the application processor would only see encrypted data. The Secure Enclave includes a hardware random bit generator. Its microkernel is based on the L4 family, a second-generation microkernel generally used to implement UNIX-like operating systems, with modifications by Apple. Communication between the SEP and the application processor is isolated to an interrupt-driven mailbox and shared memory data buffers. Note that only a small, dedicated amount of memory used for communication between the SEP and the main system is shared. The main system has no access to other memory areas of the SEP and no keys or key material may be exported. Each SEP is provisioned during fabrication with its own 256-bit Unique ID (UID). This UID is used as a key by the device, is not accessible to other parts of the system, and is not known to Apple. When the device starts up, an ephemeral key is created, entangled with its UID, and used to encrypt the SEP's portion of the device's memory space. Additionally, data that is saved to the file system by the TOE OS is encrypted with a key entangled with the UID and an anti-replay counter. The SEP manages the wrapping and unwrapping of the KEKs associated with the stored data. The UID also serves as the REK for the whole device. In addition to the UID, the Group Key (GID) and Apple's root certificate are provisioned during manufacturing. The GID is only unique per device type and is used in the secure software update process. Apple's root certificate is used to verify the integrity and authenticity of software during the secure boot process and for updates of the system software. The Secure Enclave has its own physical noise source and random bit generator, which is used for generating the 128-bit salt value for the password-based key generation function (PBKDF, specifically PBKDF2). The PBKDF2 salt is regenerated each time the passcode changes. The salt value is stored AES encrypted with the UID in the system keybag. (The PBKDF2 is discussed in Section 7.1.2.2 "Password based key derivation".) Other salt values used for functions in the TOE OS are generated using the TRNG in the Secure Enclave. This includes nonces used in the generation of digital signature algorithm (DSA) signatures as well as nonces required for the Wi-Fi and TLS protocol. Version: 1.1 Classification: Public Page 118 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 7.1.2 Cryptographic Support (FCS) 7.1.2.1 Overview of Key Management Each TOE comes with a unique 256-bit AES key called the UID. This key is stored (i.e., etched into the silicon) in the SEP and is not accessible by the application processor. Even the software in the SEP cannot read the UID. It can only request encryption and decryption operations performed by a dedicated AES engine accessible only from the SEP. The UID is generated during production using the hardware [SP800-90A-Rev1]☝ DRBG (CTR_DRBG(AES)) of the Secure Enclave and then etched into the silicon. The UID is used to derive two other keys, called "Key 0x89B" and "Key 0x835". These two keys are derived during the first boot by encrypting defined constants with the UID. "Key 0x89B" and "Key 0x835" are used to wrap two other keys: the "EMF key" (the file system key, wrapped by "Key 0x89B") and the "Dkey" (the device key, wrapped by "Key 0x835") in accordance with the requirements of [SP800-38F]☝. Both the "EMF key" and the "Dkey" are stored in block 0 of the flash memory, which is also called the "effaceable storage". This area of flash memory can be wiped very quickly. Both the "EMF key" and the "Dkey" are generated using the Secure Enclave's TRNG (used to seed the CTR_DRBG) when the TOE OS is first installed or after the device has been wiped. All keys are generated using an internal entropy source, seeding a deterministic random bit generator (DRBG) (CTR_DRBG). System entropy is generated from timing variations during boot and additionally from interrupt timing once the device has booted. Keys generated inside the SEP use the TRNG to seed the CTR_DRBG. The EMF key is used for the encryption of file system metadata. The Dkey is used within the key hierarchy to directly wrap the class keys that can be used when the device is locked. All class keys are generated in the Secure Enclave and passed to the TOE OS kernel in wrapped form only. For class keys that can only be used when the device is unlocked, the class keys are wrapped with the XOR of the Dkey and the passcode key. Every time a file on the data partition is created, a new 256-bit AES key (the "per-file" key) is created using the hardware random bit generator of the Secure Enclave (i.e., FCS_RBG_EXT.1/HW). Files are encrypted using this key with AES in Xor-Encrypt-Xor-based tweaked-codebook mode with ciphertext stealing (XTS) where the initialization vector (IV) is calculated with the block offset into the file, encrypted with the SHA-1 hash of the per- file key, and follows [SP800-38E]☝. On devices with an Apple ARM A14 and later SoC and M1 and later SoC, the encryption uses AES-256 in XTS mode in the Secure Enclave. On Apple ARM A9 through A13 devices, the encryption uses AES-128 in XTS mode in the Secure Enclave where the 256-bit per file key is split to provide a 128-bit tweak and a 128-bit cipher key. (This is a general Apple ARM processor statement and all aforementioned processors may not be used by the devices in this TOE.) Each per-file key is wrapped (in the SEP) with the class key of the file's class and then stored in the metadata of the file. Key wrapping uses AES key wrapping per [RFC3394]☝. Class keys themselves are wrapped either with device key only (for the class NSFileProtectionNone) or are wrapped with a key derived from the device key and the passcode key using XOR. This key wrapping is also performed within the SEP. Each file belongs to one of the following classes with its associated class key. NSFileProtectionComplete The class key is protected with a key derived from the user passcode and the device UID. Shortly after the user locks a device (10 seconds, if the "Require Password" setting is 'Immediately'), the decrypted class key is erased, rendering all data in this class inaccessible until the user enters the passcode again. Version: 1.1 Classification: Public Page 119 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 NSFileProtectionCompleteUnlessOpen Some files may need to be written while the device is locked. A good example of this is a mail attachment downloading in the background. This behavior is achieved by using asymmetric elliptic curve cryptography (ECDH over Curve25519). The TOE OS implements this by generating a device-wide asymmetric key pair and then protects the private key of this pair by encrypting it with the class key for the NSFileProtectionCompleteUnlessOpen class. Note that this class key can only be unwrapped when the device is unlocked because it requires the passcode to be entered which then is used in the key derivation function (KDF) that generates the key encryption key (KEK) for this class key as described above. The device-wide asymmetric key pair is generated within the SEP. When receiving data to be protected when the device is in the locked state, the application can create a file with the file attribute NSFileProtectionCompleteUnlessOpen. In this case, the TOE OS generates another asymmetric key pair within the SEP (per file object used to store the data). The device-wide public key and the file object private key are then used to generate a shared secret (using one-pass Diffie-Hellman (DH) as described in [SP800-56A-Rev3]☝). The KDF is Concatenation Key Derivation Function (Approved Alternative 1) as described in 5.8.1 of [SP800-56A-Rev3]☝. AlgorithmID is omitted. PartyUInfo and PartyVInfo are the ephemeral and static public keys, respectively. SHA-256 is used as the hashing function. The key generated in that fashion is used as the symmetric key to encrypt the data. The object private key and the shared secret are cleared when the file is closed and only the object public key is stored with the file object. To read the file, the per file object shared secret is regenerated using the device-wide private key and the per file object public key. Unwrapping of the device-wide private key can only be performed when the correct passcode has been entered, because the device-wide private key is wrapped with a key that can only be unwrapped with a class key that itself can only be unwrapped when the passcode is available. FDP_DAR_EXT.2.2 requires an asymmetric key scheme to be used to encrypt and store sensitive data received while the TOE is locked. The key scheme implemented by the TOE uses elliptic curve Diffie Hellman (ECDH) over Curve25519. When the correct passcode has been entered, the files with sensitive data received while the device was in the locked state get the per-file key re-wrapped with the NSFileProtectionCompleteUnlessOpenclass key. It is up to the application to check when the device is unlocked and then cause the TOE OS to re-wrap the file encryption key with the class key for the NSFileProtectionComplete class by changing the file's NSFileProtectionKey attribute to NSFileProtectionComplete. Protected Until First User Authentication This class behaves in the same way as Complete Protection, except that the decrypted class key is not removed from memory when the device is locked. The protection in this class has similar properties to desktop full-volume encryption and protects data from attacks that involve a reboot. This is the default class for all third-party app data not otherwise assigned to a Data Protection class. NSFileProtectionNone This class key is wrapped only with the device key and is kept in Effaceable Storage. Because all the keys needed to decrypt files in this class are stored on the device, the encryption only affords the benefit of fast remote wipe. If a file is not assigned a Data Protection class, it is still stored in encrypted form (as is all data on a TOE device). Keychain data is protected using a class structure similar to the one used for files. Those classes have behaviors equivalent to the file Data Protection classes but use distinct keys. In addition, there are Keychain classes with the additional extension "ThisDeviceOnly". Class keys for those classes are wrapped with a key that is also derived from the Device Key, which, when copied from a device during backup and restored on a different device, will make them useless. Version: 1.1 Classification: Public Page 120 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The keys for both file and Keychain Data Protection classes are collected and managed in keybags. The TOE OS uses the following keybags: system (a.k.a. user and device keybags), backup, escrow, and iCloudBackup. The keys are stored in the system keybag with some keys stored in the escrow keybag. The escrow keybag is used for device update and by MDM, which are both relevant functions defined in [MDF]☝. The system keybag is where the wrapped class keys used in normal operation of the device are stored. For example, when a passcode or biometric authentication factor is entered, the NSFileProtectionComplete key is loaded from the system keybag and unwrapped. It is a binary plist stored in the No Protection class but whose contents are encrypted with a key held in Effaceable Storage. In order to give forward security to keybags, this key is wiped and regenerated each time a user changes their passcode. The AppleKeyStore kernel extension manages the system keybag and can be queried regarding a device's lock state. It reports that the device is unlocked only if all the class keys in the system keybag are accessible and have been unwrapped successfully. Table 20 summarizes the storage for keys in persistent storage. Table 20: Summary of keys and persistent secrets in the TOE OS Key / Persistent Secret Purpose Storage (for all devices) UID REK for device Key entanglement SEP Salt (128 bits) Additional input to one- way functions AES encrypted in the system keybag Key 0x89B Wrapping of EMF key SEP. Block 0 of the flash memory. (Effaceable storage.) Key 0x835 Wrapping of Dkey SEP. Block 0 of the flash memory. (Effaceable storage.) EMF key Used for the encryption of file system metadata Stored in wrapped form in persistent storage NSFileProtectionCompleteUnlessOpen device- wide asymmetric key pair Writing files while the device is locked Stored in wrapped form in Persistent storage CompleteUntilFirstUserAuthentication Stored in wrapped form in persistent storage NSFileProtectionCompleteUnlessOpen Writing files while the device is locked: KDF static public keys Stored in wrapped form in persistent storage AfterFirstUnlock Stored in wrapped form in persistent storage AfterFirstUnlockThisDeviceOnly Stored in wrapped form in persistent storage WhenUnlocked Stored in wrapped form in persistent storage Version: 1.1 Classification: Public Page 121 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Key / Persistent Secret Purpose Storage (for all devices) WhenUnlockedThisDeviceOnly Stored in wrapped form in persistent storage Dkey Stored in wrapped form in persistent storage NSFileProtectionNone Stored in wrapped form in persistent storage NSFileProtectionComplete class key User device lock Stored in wrapped form in persistent storage Individual keys for files and Keychains Stored in wrapped form in persistent storage Biometric templates (Touch ID and Face ID) Stored in wrapped form in persistent storage DH Group parameters Used as part of IKE/IPsec key establishment RAM User IPsec/TLS X.509v3 Certificate Keys Used to authenticate IKE/IPsec & TLS sessions Persistently stored encrypted in the platform keychain CA IPsec/TLS X.509v3 Certificate Public Keys Used in X.509v3 certificate validation Persistently stored encrypted in the platform keychain IKEv2 IKE_SA Encryption Keys Used to encrypt IKE/IPsec traffic RAM IKEv2 IKE_SA Integrity Keys Used to verify the integrity of IKE/IPsec traffic. RAM IKEv2 CHILD_SA Encryption Keys Used to encrypt IKE/IPsec traffic RAM IKEv2 CHILD_SA Integrity Keys Used to verify the integrity of IKE/IPsec traffic. RAM TLS ECDH keys Used as part of TLS key establishment RAM TLS AES session keys Used to encrypt TLS traffic RAM 7.1.2.2 Password based key derivation The TOE implements PBKDF2 to derive a 256-bit key from a user's passcode. The PBKDF2 is implemented as specified in [SP800-132]☝ following "Option 2b" defined in section 5.4 of the standard. It uses HMAC-SHA-256 as the pseudorandom function (PRF). Version: 1.1 Classification: Public Page 122 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The input to the PBKDF2 is the 128-bit random salt generated by the SEP (as described in Section 7.1.1.1), the user's passcode without any pre-processing, and an iteration count of one. The output is the 256-bit key mentioned above. Next, the output of the PBKDF2 is repeatedly encrypted with the AES-CBC-256 hardware cipher using the 256- bit UID as the encryption key to generate 256 bits of data with each loop iteration. The loop is performed as often as needed to reach a duration between 100 and 150 milliseconds on that device. The output after all AES iterations have completed forms the 256-bit root encryption key used to unwrap the user's keybag that holds the class keys for the file system data protection. Only when the unwrapping of the user's keybag is successful is the user considered authenticated. Note: The number of AES-CBC-256 iterations is calibrated to take at least 100 to 150 milliseconds with a minimum of 50,000 iterations. The number of iterations is device-specific and may be greater than 50,000 on some devices. 7.1.2.3 No plaintext key transmission and export The TOE security boundary is the device. The TOE does not transmit or export plaintext key material outside of the TOE security boundary. Plaintext key material is never logged. Biometric credential data is confined to the Secure Enclave. The Secure Enclave is the Separate Execution Environment (SEE). Biometric keying material, enrollment and authentication templates, the features an algorithm uses to perform biometric authentication for enrollment or verification, threshold values, intermediate calculations, and final match scores never leave the Secure Enclave. The capture sensor and the SEE are isolated from the device's main operating system in runtime. Plaintext keys such as plaintext data encryption keys (DEKs), key encryption keys (KEKs), and keys stored in the secure key storage are never exported. As described in Section 7.1.2.1, the Secure Enclave preserves the security of these keys. 7.1.2.4 Storage of Persistent Secrets and Private Keys by the MDM Agent The MDM Agent calls the TOE OS API on the device in order to store keys and persistent secrets in the Keychain which are therefore stored in wrapped form in persistent storage, as described above. Table 21 summarizes the keys, authentication token, and persistent secrets stored for the MDM Agent. They are used on all devices listed in this Security Target. Table 21: Summary of keys and persistent secrets used by the MDM Agent Key / Persistent Secret Purpose Storage (for all devices) TLS keys Protecting MDM Protocol communications with the MDM Server Stored on the device in wrapped form in persistent storage Device Push Token The Device Push Token is received when registering with the Apple Push Notification Service (APNS) in order to have an unambiguous identifier in APNS. The token is not stored on the device but sent to the MDM server. The MDM server stores it to be able to contact the device. UDID Unique Device ID Stored in wrapped form in persistent storage PushMagic The magic string that must be included in the push notification message. This value is generated by the device. Stored in wrapped form in persistent storage Version: 1.1 Classification: Public Page 123 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Key / Persistent Secret Purpose Storage (for all devices) Device identity certificate The device presents its identity certificate for authentication when it connects to the check-in server. Stored in wrapped form in persistent storage Certificate Payload Transferring certificates via payloads. [DEV_MAN]☝ » Profile-Specific Payload Keys » Certificates Stored in wrapped form in persistent storage Profile encryption key A profile can be encrypted so that it can only be decrypted using a private key previously installed on a device. Stored in wrapped form in persistent storage GUID Volume Purchase Program (VPP) Account Protection A random UUID should be standard 8-4-4-4-12 formatted UUID string and must be unique for each installation of your product Stored in wrapped form in persistent storage Figure 5 provides an overview on the key management hierarchy implemented in the TOE OS. Version: 1.1 Classification: Public Page 124 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Figure 5: Key Hierarchy in the TOE OS The Data Protection API can be used by applications to define the class to which a new file belongs by using the NSFileProtectionKey attribute and setting its value to one of the classes described above. When the device is locked, a new file can only be created in the classes NSFileProtectionNone and NSFileProtectionCompleteUnlessOpen. The UID (a.k.a. UID key) is not accessible by any software. The "Key 0x89B" and "Key 0x835" keys are both derived by encrypting defined values (identical for all devices) with the UID key. All three keys are stored in the SEP. All other keys shown in the figure are stored in wrapped form in persistent storage and unwrapped when needed. The following bullet points summarize storage of persistent secrets and private keys by the MDM agent. ● The keys discussed in this section are managed by and/or maintained in the SEP. The TOE OS and SEP interact with each other using a mailbox system detailed in Section 7.1.1.1. Version: 1.1 Classification: Public Page 125 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● All file system items and all keychain items are stored in encrypted form only. ● File system metadata is encrypted using the EMF key. ● Files and keychain items are encrypted with individual keys. Those keys are wrapped with the class key of the class, the file, or the Keychain to which the item belongs. ● Files and keychain items belonging to the classes 'NSFileProtectionNone' (files) and 'Always' or 'AlwaysThisDeviceOnly' are encrypted with keys that are wrapped with the Dkey only. Those items can be accessed (decrypted) before the user is authenticated. For all other classes, the passcode key (which is derived from the user's passcode) is used in the generation of the wrapping key used for those classes, and therefore, decrypting those items is only possible when the user has correctly entered their passphrase. ● All decryption errors are handled in compliance with [SP800-56B-Rev1]☝. ● When a wipe command is issued, protected data is wiped by erasing the top-level KEKs. Since all data at rest is encrypted with one of those keys, the device is wiped. The TOE performs the following activities to protect the keys used for file encryption. Every time the TOE is booted, it does the following. ● An ephemeral AES key (256-bit) is created in the SEP using the random bit generator of the Secure Enclave. ● The (wrapped) Dkey and (wrapped) EMF key (both 256-bit keys) are loaded by the TOE OS kernel from the effaceable storage and sent to the SEP. ● The SEP unwraps the Dkey and the EMF key. ● The SEP wraps the Dkey with the newly generated ephemeral key. ● The SEP stores the ephemeral key in the storage controller. This area is not accessible by the TOE OS kernel. When the TOE OS accesses a file, the following operations are performed. ● The TOE OS kernel first extracts the file metadata (which are encrypted with the EMF key) and sends them to the SEP. ● The SEP decrypts the file metadata and sends it back to the TOE OS kernel. ● The TOE OS kernel determines which class key to use and sends the class key (which is wrapped with the Dkey, or with the XOR of the Dkey and the Passcode Key) and the file key (which is wrapped with the class key) to the SEP. ● The SEP unwraps the file key and re-wraps it with the ephemeral key and sends this wrapped key back to the TOE OS kernel. ● The TOE OS kernel sends the file access request (read or write) together with the wrapped file key to the storage controller. ● The storage controller uses its internal implementation of AES, decrypts the file key, and then decrypts (when the operation is read) or encrypts (when the operation is write) the data during its transfer from/to the flash memory. The following bullet points summarize the storage location for key material. ● The UID is stored in the firmware of the SEP in a section not accessible by any program in the SEP or the application processor. The SEP can only be used to encrypt and decrypt data (with AES-256) using the UID as the key. ● "Key 0x89B" and "Key 0x835" are stored in the SEP. Version: 1.1 Classification: Public Page 126 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● The EMF key, Dkey, and the class keys are stored in the effaceable area, all in wrapped form only. As explained, they are never available in plaintext in the application processor system. ● File keys and Keychain item keys are stored in internal, non-volatile memory, but in wrapped form only. As explained, they are never available in plaintext in the application processor system. ● The system and the applications can store private keys in Keychain items. They are protected by the encryption of the Keychain item. ● Symmetric keys used for TLS, HTTPS, or Wi-Fi sessions are held in RAM only. Similarly, ECDH asymmetric keys used for TLS and HTTPS are held in RAM only. They are generated and managed using one of the two libraries, Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] and Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1], or by the AES implementation within the Wi-Fi chip. The functions of those libraries, such as memset(0), also perform the clearing of those keys after use. 7.1.2.5 Randomness extraction and expansion step "Concatenating the keys and using a KDF (as described in SP800-56C)" is selected in FCS_CKM_EXT.3 Cryptographic Key Generation. The TOE implements the KDF following the specification in RFC 5869. The KDF defined in this RFC complies with the extraction and expansion KDFs specified in [SP800-56C-Rev2]☝. This RFC exactly specifies the order of the concatenation of the input data used for the extraction steps as well as the data concatenation and the counter maintenance of the expansion phase. Extraction: HKDF-Extract(salt, IKM) -> PRK Options: Hash A hash function; HashLen denotes the length of the hash function output in octets. Inputs: salt Optional salt value (a non-secret random value); if not provided, it is set to a string of HashLen zeros. IKM Input keying material. Output: PRK A pseudorandom key (of HashLen octets). The output PRK is calculated as follows: PRK = HMAC-Hash(salt, IKM) Expansion: HKDF-Expand(PRK, info, L) -> OKM Options: Hash A hash function; HashLen denotes the length of the hash function output in octets. Inputs: PRK A pseudorandom key of at least HashLen octets Version: 1.1 Classification: Public Page 127 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 (usually, the output from the extract step). info Optional context and application specific information (can be a zero-length string). L Length of output keying material in octets (<= 255*HashLen). Output: OKM Output keying material (of L octets). The output OKM is calculated as follows: N = ceil(L/HashLen) T = T(1) | T(2) | T(3) | ... | T(N) OKM = first L octets of T where: T(0) = empty string (zero length) T(1) = HMAC-Hash(PRK, T(0) | info | 0x01) T(2) = HMAC-Hash(PRK, T(1) | info | 0x02) T(3) = HMAC-Hash(PRK, T(2) | info | 0x03) ... (where the constant concatenated to the end of each T(n) is a single octet.) The implementation of the KDF uses HMAC-SHA-256 for both the extraction as well as the expansion phase. The salt length and the output key length of the KDF are each 256 bits. 7.1.2.6 Explanation of usage for cryptographic functions Table 22 enumerates the various cryptographic functions specified in the SFRs and maps them to their modules. The corecrypto modules are abbreviated as: User Space, Kernel Space, and SKS. Table 22: Explanation of usage for cryptographic functions in the cryptographic modules SFR Cryptographic Function Algorithm Modes/Notes Key/Curve size Module ECDSA KeyGen and KeyVer [FIPS186-4]☝ (ECC scheme) Notes: Used for TLS, Bluetooth, and memory encryption scheme. P-256 P-384 Curve25519 User Space Kernel Space SKS Diffie-Hellman Group 14 [RFC3526]☝ (FFC scheme) Notes: Used for IPsec. MODP-2048 User Space FCS_CKM.1 Asymmetric key pair generation Safe-primes [SP800-56A-Rev3]☝ (FFC scheme) Notes: Used for IPsec. MODP-2048 MODP-3072 User Space Version: 1.1 Classification: Public Page 128 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR Cryptographic Function Algorithm Modes/Notes Key/Curve size Module FCS_CKM.1/VPN Asymmetric key pair generation ECDSA KeyGen and KeyVer [FIPS186-4]☝ (ECC scheme) Notes: Used for IPsec. P-256 P-384 User Space RSA [SP800-56B-Rev1]☝ Modulo: 2048 3072 4096 User Space ECC Key Establishment (KAS-ECC-SSC) [SP800-56A-Rev3]☝ Scheme: ephemeralUnified P-256 P-384 User Space SKS Diffie-Hellman Group 14 (FFC scheme) [RFC3526]☝ Notes: Used for IPsec. MODP-2048 User Space FCS_CKM.2/ UNLOCKED Key establishment FFC Key Establishment (KAS-FFC-SSC) [SP800-56A-Rev3]☝ Scheme: dhEphem Notes: Used for IPsec. MODP-2048 MODP-3072 User Space FCS_CKM.2/ LOCKED Key establishment ECC Scheme [RFC7748]☝ Curve25519 SKS CCM, GCM [SP800-38C]☝ (CCM), [SP800-38D]☝ (GCM) 128-bit 256-bit User Space Kernel Space SKS CBC, XTS [SP800-38A]☝ (CBC), [SP800-38E]☝ (XTS) 128-bit 256-bit User Space Kernel Space SKS FCS_COP.1/ ENCRYPT Symmetric encryption/ decryption AES [FIPS197]☝ KW [SP800-38F]☝ (KW) 128-bit 256-bit User Space Kernel Space Version: 1.1 Classification: Public Page 129 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR Cryptographic Function Algorithm Modes/Notes Key/Curve size Module SKS CBC [SP800-38A]☝ (CBC) encrypt only 128-bit 256-bit SKS Hardware CCMP [SP800-38C]☝ (CCM) 128-bit 256-bit Wi-Fi core/chip GCMP [SP800-38D]☝ (GCM) 256-bit Wi-Fi core/chip FCS_COP.1/HASH Hashing SHS [FIPS180-4]☝ SHA-1 SHA-256 SHA-384 SHA-512 (byte-oriented mode) Notes: Used for digital signatures (FCS_COP.1/ SIGN), HMACs (FCS_COP.1/ KEYHMAC, and KDFs (FCS_CKM_EXT.3, FCS_COP.1/CONDITION). User Space Kernel Space SKS RSA SigGen [FIPS186-4]☝ Using SHA-256 SHA-384 SHA-512 Modulo: 2048 3072 4096 User Space Kernel Space RSA SigVer [FIPS186-4]☝ Using SHA-1 SHA-256 SHA-384 SHA-512 Modulo: 2048 3072 4096 User Space Kernel Space ECDSA SigGen [FIPS186-4]☝ Using SHA-256 SHA-384 SHA-512 P-256 P-384 P-521 User Space Kernel Space SKS FCS_COP.1/SIGN Digital signature generation; Digital signature verification ECDSA SigVer [FIPS186-4]☝ Using SHA-1 SHA-256 SHA-384 SHA-512 P-256 P-384 P-521 User Space Kernel Space SKS Version: 1.1 Classification: Public Page 130 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR Cryptographic Function Algorithm Modes/Notes Key/Curve size Module HMAC-SHA-1 Block size: 512 Output MAC: 160 Greater than or equal to 112 bits User Space Kernel Space SKS HMAC-SHA-256 Block size: 512 Output MAC: 256 Greater than or equal to 112 bits User Space Kernel Space SKS HMAC-SHA-384 Block size: 1024 Output MAC: 384 Greater than or equal to 112 bits User Space Kernel Space SKS FCS_COP.1/ KEYHMAC Keyed-hash HMAC [FIPS198-1]☝ HMAC-SHA-512 Block size: 1024 Output MAC: 512 Greater than or equal to 112 bits User Space Kernel Space SKS FCS_COP.1/ CONDITION Salted HMAC-SHA and PBKDF2 HMAC-SHA-256 HMAC-SHA-256 Block size: 512 Output MAC: 256 Greater than or equal to 112 bits User Space Kernel Space SKS FCS_RBG_EXT.1/HW Random bit generation; Symmetric key generation CTR_DRBG(AES) [SP800-90A-Rev1]☝ AES-256 SKS Hardware FCS_RBG_EXT.1/SW Random bit generation; Symmetric key generation CTR_DRBG(AES) [SP800-90A-Rev1]☝ AES-256 User Space Kernel Space 7.1.3 User Data Protection (FDP) The Core System Services available for user data protection are those of Protection of Files and Application access to Files, described below in Section 7.1.3.1 and Section 7.1.3.2. These are applicable to all applications on the TOE that are all allowed access to these two System Services. A further set of high-level system services is presented to applications and monitored by the TOE OS allowing users to grant access to these services, or not. Version: 1.1 Classification: Public Page 131 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 7.1.3.1 Protection of Files When a new file is created on a TOE device, it's assigned a class by the app that creates it. Each class uses different policies to determine when the data is accessible. As described above, each class has a dedicated class key that is stored in wrapped form. Note that for the classes other than 'No Protection' to work, the user must have an active passcode lock set for the device. The basic classes and policies are described below. Complete Protection (referred to as "class A" in some documents) Files in this class can only be accessed when the device is unlocked. Protected Unless Open (referred to as "class B" in some documents) This class is for files that may need to be written while the device is locked. Protected Until First User Authentication (referred to as "class C" in some documents) This class is for files that are protected until the user has successfully authenticated. Unlike the 'Complete Protection' class, the class key for this class is not wiped when the device is locked, but after a re-boot the user has to authenticate before files in this class can be accessed. So, once the user has authenticated after reboot the key is available until the device is shutdown or rebooted. No Protection (referred to as "class D" in some documents) Files in this class can always be accessed. The files themselves are encrypted using a file specific key, but this key can be unwrapped without using the passcode key derived from the user's passcode or biometric authentication factor. Note: Class A, class B, and class C keys require that the user has defined a passcode. If the user has not defined a passcode, then only class D keys exist. All data in files is considered private data because all files are encrypted. Sensitive data is data protected with a class A or class B key because this data is not accessible when the device is locked. 7.1.3.2 Application Access to Files An app's interactions with the file system are limited mostly to the directories inside the app's sandbox. During installation of a new app, the TOE OS creates multiple containers for the app. Each container has a specific role. The bundle container holds the app's bundle, whereas the data container holds data for both the application and the user. The data container is further divided into multiple directories that the app can use to sort and organize its data. The app may also request access to additional containers—for example, the iCloud container —at runtime. When a built-in application is removed, all of its files, including any related user data and configuration files, are also removed. For any third-party applications, deleting an app (as opposed to "offloading" an application) deletes both the application and all related data from the mobile device. 7.1.3.3 Declaring the Required Device Capabilities of an Application All applications must declare the device-specific capabilities they need to run. The value of the UIRequiredDeviceCapabilities key is either an array or dictionary that contains additional keys identifying features your app requires (or specifically prohibits). If you specify the value of the key using an array, the presence of a key indicates that the feature is required; the absence of a key indicates that the feature is not required and that the app can run without it. If a dictionary is specified instead, each key in the dictionary must have a Boolean value that indicates whether the feature is required or prohibited. A value of true indicates the feature is required, and a value of false indicates that the feature must not be present on the device. Version: 1.1 Classification: Public Page 132 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 7.1.3.4 App Groups Apps and extensions owned by a given developer account can share content when configured to be part of an App Group. It is up to the developer to create the appropriate groups on the Apple Developer Portal and include the desired set of apps and extensions. Once configured to be part of an App Group, apps have access to the following: ● A shared container for storage, which will stay on the device as long as at least one app from the group is installed ● Shared preferences ● Shared Keychain items The Apple Developer Portal guarantees that App Group IDs are unique across the app ecosystem. The TOE provides the following separate resources for each app group and allows only applications within that group to access the resources: ● Account credential database ● Keystore 7.1.3.5 Restricting Applications Access to Services The TOE allows a user to restrict the services an application can access. The services that can be restricted on a per-app basis are as follows. Applications prompt the mobile device user to grant permission for the application to use system services when they are installed. Subsequently, mobile device users can perform access control for applications using the following system services through the Settings » Privacy & Security interface: ● Location Services ● Tracking ● Contacts ● Calendars ● Reminders ● Photos ● Bluetooth ● Local Network ● Microphone ● Speech Recognition ● Camera ● HomeKit ● Media & Apple Music ● Files and Folders ● Motion & Fitness ● Focus ● Analytics & Improvements ● Apple Advertising ● App Privacy Report Version: 1.1 Classification: Public Page 133 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● Lockdown Mode 7.1.3.6 Keychain Data Protection Many apps need to handle passwords and other short but sensitive bits of data, such as keys and login tokens. The TOE OS Keychain provides a secure way to store these items. The Keychain is implemented as an SQLite database stored on the file system. There is only one database; the securityd daemon determines which Keychain items each process or app can access. Keychain access APIs result in calls to the daemon, which queries the app's "keychain-access-groups" and the "application-identifier" entitlement. Rather than limiting access to a single process, access groups allow Keychain items to be shared between apps. Keychain items can only be shared between apps from the same developer. This is managed by requiring third- party apps to use access groups with a prefix allocated to them through the Apple Developer Program or in the TOE OS via application groups. The prefix requirement and application group uniqueness are enforced through code signing, Provisioning Profiles, and the Apple Developer Program. The TOE OS provides a user interface (UI) in the Settings dialog that allows importing of keys for use for Apple-provided applications such as Safari or VPN. Keychain data is protected using a class structure similar to the one used in file Data Protection. These classes have behaviors equivalent to file Data Protection classes but use distinct keys and are part of APIs that are named differently. Table 23 shows the Keychain classes and their equivalent file system classes. Table 23: Keychain to File-system Mapping Keychain data protection class File data protection class When unlocked NSFileProtectionComplete While locked NSFileProtectionCompleteUnlessOpen After first unlock NSFileProtectionCompleteUntilFirstUserAuthentication Always NSFileProtectionNone In addition, there are the Keychain data protection classes with the additional "ThisDeviceOnly" added to their class name. Keychain items in those classes cannot be moved to a different device using backup and restore; keychain items in those classes are bound to the device. Among the data stored in Keychain items are digital certificates used for setting up VPN connections and certificates and private keys installed by the Configuration Profile. Keychains can use access control lists (ACLs) to set policies for accessibility and authentication requirements. Items can establish conditions that require user presence by specifying that they cannot be accessed unless authenticated by entering the device's passcode. ACLs are evaluated inside the SEP and are released to the kernel only if their specified constraints are met. Further information is found in Section 1.5.2.2.5. 7.1.3.7 VPN VPN packet processing is handled by the TOE. Because all the TSF binaries and libraries are protected from stack-based buffer overflow (see Section 7.1.6.5 "Domain Isolation"), it can be determined that no data will be reused when processing network packets. Version: 1.1 Classification: Public Page 134 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Note: To protect the device from vulnerabilities in network processor firmware, network interfaces including Wi- Fi and baseband have limited access to application processor memory. When USB or secure digital input output (SDIO) is used to interface with the network processor, the network processor cannot initiate Direct Memory Access (DMA) transactions to the application processor. When peripheral component interconnect express (PCIe) is used, each network processor is on its own isolated PCIe bus. An input–output memory management unit (IOMMU) on each PCIe bus limits the network processor's DMA access to pages of memory containing its network packets or control structures. 7.1.3.8 Keyed Hash The TSF performs keyed-hash message authentication in accordance with HMAC-SHA-1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512. It uses key sizes greater than or equal to 112 bits and message digest sizes 160 and 256, 384, 512 bits. 7.1.4 Identification and Authentication (FIA) The user must authenticate using a passcode or a biometric (face or fingerprint) to use the device except when performing the following: ● Accessing Medical ID information ● Answering calls ● Making emergency calls ● Using the cameras (unless their use is generally disallowed) ● Using the control center ● Using the flashlight ● Using the notification center All passcode entries are obscured by a dot symbol for each character as the user input occurs. Biometric authentication inputs do not produce feedback to the user unless an input is rejected. TOE devices support either Face ID (face) or Touch ID (fingerprint) BAFs. Historically, there are multiple generations of these BAFs as improvements were made over time. Appendix A.1 provides the BAF and BAF generation for each TOE device. For Face ID, when an invalid facial sample is given or cannot be authenticated, the user needs to swipe up before a second attempt can occur and passcode entry will be presented to the user as an option. After five invalid Face ID attempts, the device will vibrate and passcode entry must be used. For Touch ID, when an invalid fingerprint sample is given or cannot be authenticated, a simple error message is returned to the user to try again. If three invalid fingerprint samples are presented, then the device will offer passcode entry. After five invalid biometric samples are presented, passcode authentication is required. The following passcode policies can be defined for managed devices: ● The minimum length of the passcode ● The minimum number of special characters a valid passcode must contain ● The maximum number of consecutive failed attempts to enter the passcode (which can be value between 2 and 11, the default is 11) ● The number of minutes for which the device can be idle before it gets locked by the system ● The maximum number of days a passcode can remain unchanged ● The size of the passcode history (the maximum value is 50) Those parameters for the passcode policy can be defined in the Passcode Payload section of a Configuration Profile defined by a system administrator for a managed device. For details, see Section 7.1.5. Version: 1.1 Classification: Public Page 135 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Devices that support Touch ID do not support Face ID and vice versa. The passcode and the device's BAF cannot be combined for two-factor authentication. In addition, the following behavior applies to BAFs. A passcode must be supplied for additional security validation under any of the following conditions: ● The device has just been turned on or restarted. ● The device has not been unlocked for more than 48 hours. ● The passcode has not been used to unlock the device in the last 156 hours (six and a half days) and Face ID has not unlocked the device in the last 4 hours. ● The device has received a remote lock command. ● After there have been five unsuccessful attempts to match. ● After power off/Emergency SOS/Medical ID has been initiated. The number of failed passcode authentication attempts is maintained in a system file, which will persist in the event of graceful or ungraceful loss of power to the TOE. The counter maintaining the number of failed consecutive logon attempts is increased by one immediately once the TOE has identified that the passcode is incorrect. The increment of the counter is completed before the UI informs the user about the failed logon attempt. Face ID and Touch ID use a separate failed attempt counter from the passcode counter that is not maintained over a power loss or reboot (i.e., the Face ID and Touch ID failed attempt counter is reset after a power loss or reboot). The time between consecutive authentication attempts, including biometric authentication factors, is at least the time it takes the PBKDF2 function to execute. This is calibrated to be at least 80 milliseconds between consecutive attempts. In addition, for Touch ID, the TOE enforces a 5-second delay between repeated failed authentication attempts. When a user exceeds the number of consecutive failed passcode login attempts, the user's partition is erased (by erasing the encryption key). The OS partition is mounted READONLY upon boot and is never modified during the use of the TOE except during a software update or restore. Note that entering the same incorrect passcode multiple times consecutively causes the passcode failed unlock counter to increment only once for those multiple attempts even though these are all passcode failed unlock attempts. Different passcodes must be entered in order for the passcode failed unlock counter to increment. (This description only applies to the passcode failed unlock counter and does not apply to biometric authentication.) Additionally, authentication credentials, which include biometric samples, are not stored on the TOE in any location. Successful authentication attempts are achieved exclusively by a successful key derivation that decrypts the keybag in the SEP with the respective class keys. 7.1.4.1 Biometric Authentication 7.1.4.1.1 Accuracy of Biometric Authentication Touch ID Performance assessment of Touch ID verification is conducted in the form of an offline test. Fingerprint data used in these tests were collected separately for each sensor generation using multiple devices, the production version of the sensor, and its firmware. The software (i.e., primarily the biometric algorithms) is based on production code corresponding to the given TOE OS release. For efficiency reasons, the test is not run on the production hardware, but it is instead emulated on a different platform in a cloud computation infrastructure. A special testing step is performed to assure equality of results between the emulated and production run on the same input data. The False Acceptance Rate (FAR) test protocols differ between sensor generations as follows: Version: 1.1 Classification: Public Page 136 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● For Gen.1 (generation 1) and Gen.4 (generation 4), a full cross-comparison scheme is used. Each user is enrolled and each template is attacked by all other user data. ● For Gen.3(generation 3), a partial cross-comparison is done. In this scheme, the test population is split between users and impostors. Users are enrolled and each template is attacked by all impostor data. Gen.2 (generation 2) is not used on the TOE devices. Face ID Performance assessment is designed to cover representative Face ID usage cases (e.g., variation of environment, unlock poses and distance, accessory changes) across a representative age, gender and ethnicity distribution. Data collection for the assessment is submitted to the following controls: ● Check the number of actions in each visit to ensure diversity of actions completed by each participant ● Image quality assessment ● Score distribution plots from Face ID modules to ensure that scores are in the expected range and data is of high quality. ● Image visualization to remove subjects with identity contamination from evaluation 7.1.4.1.2 Biometric Sample Quality In the TOE OS, sample quality is inspected before it is passed to the matcher algorithm for both Touch ID and Face ID. In general, the inspection is based on the following criteria: For Touch ID: ● Finger motion ● Sensor coverage ● Fixed pattern noise (FPN) For Face ID: ● Pose: Pose angles ● Distance: Within a specific range ● Occlusion: Visible face region ● Attention: Subject must be looking at the device If the sample quality passes verification during enrollment, the TOE saves it as an enrollment template. When a user authenticates, an authentication template is generated. If a properly formatted template contains unusual data properties, incorrect syntax, low quality, or unrealistic modality, the TOE rejects the template. The validation of the discussed mechanism is performed regularly for each major TOE OS release. The test is based on specialized datasets containing different levels of coverage and different artifacts. These samples are fed to the biometric system and it is confirmed whether the sample is correctly passed or rejected from the processing as expected. Additionally, the biometric system is tested by feeding artificially created images containing different geometric patterns. 7.1.4.2 X.509v3 Certificates There are multiple X.509v3 certificates used by the TOE. First, there is the Apple certificate used to verify the integrity and authenticity of software updates. This certificate is installed in ROM during manufacturing. Version: 1.1 Classification: Public Page 137 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Other certificates used for setting up trusted channels or decrypt/verify protected email can be imported by a user (if allowed by the policy) or installed using Configuration Profiles. In addition, root certificates can be downloaded from a website. Certificates can be installed for the following: ● IPsec ● TLS ● EAP-TLS, other supported EAP protocols ● Configuration Profile validation Note that only IPsec, TLS, and EAP-TLS are addressed by [MDF]☝. Certificates have a certificate type that defines their respective application area. This ensures that only certificates defined for a specific application area are used. In addition, the database containing trust anchors for all certificates is protected via integrity check and write protection. The certificate types supported by the TOE are as follows: ● AppleX509Basic ● AppleSSL ● AppleSMIME ● AppleEAP ● AppleIPsec ● AppleCodeSigning ● AppleIDValidation ● AppleTimeStamping External entities can be authenticated using a digital certificate. Out of the box, the TOE includes multiple preinstalled root certificates. Code signing certificates need to be assigned by Apple and can be imported into a device. The issue of such a certificate can be by app developers or by enterprises that want to deploy apps from their MDM to managed devices. All apps must have a valid signature that can be verified by a code signing certificate before they are installed on a device. The TOE OS can update certificates wirelessly if any of the preinstalled root certificates become compromised. To disable this, there is a restriction that prevents over-the-air certificate updates. The list of supported certificate and identity formats are: ● X.509 certificates with RSA keys, and ● File extensions .cer, .crt, .der, .p12, and .pfx. To use a root certificate that is not preinstalled, such as a self-signed root certificate created by the organization managing the TOE, they can be distributed using one of the following methods: ● When reviewed and accepted by the user ● Using the Configuration Profile ● Downloaded from a website When attempting to establish a connection using a peer certificate (i.e., a certificate received from the other endpoint), the peer certificate is first checked to ensure it is valid as per [RFC5280]☝. Certificates are validated against the Subject Alternative Name (SAN). Wildcards are supported. The Common Name (CN) is ignored. If the SAN does not match the corresponding domain name system (DNS) or IP Address of the server being Version: 1.1 Classification: Public Page 138 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 accessed, validation and, subsequently, the connection will fail. If the certificate is valid, the attempt to establish the connection continues. If the certificate is invalid, the next step is up to the application. The application should provide an indication to the user that the certificate is invalid and options to accept or reject. The TOE, excluding WLAN, uses the online certificate status protocol (OCSP) for validating the revocation status of certificates. When a connection cannot be established to the OCSP server to determine the revocation status of a certificate, the TOE considers the certificate as not revoked. As part of the certificate chain validation, the validity period of each certificate in the chain is verified. If the certificate is marked as an extended validation certificate, the TOE performs an OCSP lookup to verify the validity (revocation status) of the certificate (except for WLAN certificate validation, which does not support OCSP). The basicContraints extension and the CA flag are checked. CA certificates must have the basicContraints extension, the CA flag set to TRUE, and include the caSigning purpose. The extendedKeyUsage (EKU) is validated against the rules defined in FIA_X509_EXT.1 (which is a superset of the rules in FIA_X509_EXT.1/WLAN). Finally, the signature of the issuer of the certificate is verified. Only when all checks succeed, the certificate is considered valid and the next certificate in the certificate chain is checked. The certificate chain searches for the certificates in the TOE's trust store. The trust store is a combination of the trust store delivered with the TOE and the certificates stored in the keychain and marked as trustworthy. The trust store stores and protects certificates from unauthorized deletion and modifications. Authorized administrators can load certificates into the trust store. Certificates from the trusted store are validated using the previously described checks at the time that they are used. Certificate path validation terminates with a certificate in the trust store. TLS is implemented as a stack that can be utilized by third-party applications. The API informs the calling application that the certificate is not valid. For example, Safari (e.g., HTTPS connection) will display a message to the user that the peer certificate validation failed and allow the user to examine the certificate with the option to allow the connection or not. The TOE can be configured to disable the user option to accept invalid TLS certificates using the "Allow user to accept untrusted TLS certificates" setting. 7.1.4.3 MDM Server Reference ID The initial MDM Payload contains a mandatory ServerURL string. The URL that the device contacts to retrieve device management instructions must begin with the https:// URL scheme, and may contain a port number (for example ":1234"). Thus, the enrollment is initiated by the device and performed over an HTTPS connection. The MDM check-in protocol is used during initialization to validate a device's eligibility for MDM enrollment and to inform the MDM server that a device's Device Push Token has been updated. If a check-in server URL is provided in the MDM payload, the check-in protocol is used to communicate with that check-in server. If no check-in server URL is provided, the main MDM Server URL is used instead. A managed mobile device uses an identity to authenticate itself to the MDM Server over HTTPS. This identity can be included in the profile as a Certificates payload or can be generated by enrolling the device with Simple Certificate Enrollment Protocol (SCEP)1 . Each MDM Server must be registered with Apple at the Apple Business Manager (ABM) management portal. The ABM provides details about the server entity to identify it uniquely throughout the organization deploying the MDM Server. Each server can be identified by either its system- generated UUID or by a user-provided name assigned by one of the organization's users. Both the UUID and server name must be unique within the organization. Registered MDM servers can include third-party servers. The TOE devices automatically connect to the MDM Server during setup if the device is enrolled into the ABM and is assigned to an MDM Server. During the device enrollment, the MDM enrollment service returns a JavaScript Object Notation (JSON) dictionary with the keys to mobile devices shown in Table 24. 1 More information about SCEP can be found [RFC8894]☝. Version: 1.1 Classification: Public Page 139 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Table 24: MDM Server Reference Identifiers Key Value server_name An identifiable name for the MDM Server server_uuid A system-generated server identifier admin_id Apple ID of the person who generated the current tokens that are in use facilitator_id Legacy equivalent to the admin_id key. This key is deprecated and may not be returned in future responses. org_name The organization name org_email The organization email address org_phone The organization phone org_address The organization address 7.1.5 Specification of Management Functions (FMT) Since all the mobile devices specified in this Security Target use the same operating system, there are no differences between supported management functions and policies between the different mobile devices. The supported management functions for the TOE OS are described in [DEV_MAN]☝. Table 15, Table 16, and Table 17 describe the management functions of the devices as well as the MDM Agent that are available when the device is enrolled in MDM. 7.1.5.1 Device Enrollment The methods by which an MDM Agent can be enrolled in to MDM are as follows:2 ● Manually, using Apple's Profile Manager ● Manually, using Apple Configurator 2 ● Distributing an enrollment profile via email or a website ● Apple Business Manager (This is an automated and enforced method of automatically enrolling new devices.) A more detailed description is found in Section 7.1.4.3. In addition, the enrollment process is discussed in [DeployRef]☝. The MDM server provides the agent with an MDM certificate. This certificate is used as the authentication token by the MDM agent. Similarly, the Apple Configurator 2 installs a certificate when the device allows Apple Configurator 2 to manage it. This certificate is also used as the authentication token. 7.1.5.2 Configuration Profiles The TOE can be configured using Configuration Profiles3 that are installed on the TOE. Configuration Profiles are XML files that may contain settings for multiple configurable parameters. For details on the different payloads and keys that can be defined, see [DEV_MAN]☝ under Configuration Profiles » Profile-Specific Payload Keys. 2 Lockdown Mode prevents the installation of Configuration Profiles and the enrollment in MDM and device supervision. 3 Lockdown Mode prevents the installation of Configuration Profiles and the enrollment in MDM and device supervision. Version: 1.1 Classification: Public Page 140 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Configuration Profiles are processed by the TOE OS. The PayloadRemovalDisallowed key—found in [DEV_MAN]☝ under Configuration Profiles » Profile-Specific Payload Keys » TopLevel » object TopLevel—allows to prevent manual removal of profiles installed through an MDM server. Such profiles cannot be removed using the Profiles preference pane nor the profiles command line tool even when run as root. Only the MDM server can remove such profiles. Profiles installed manually, with PayloadRemovalDisallowed set to true, can be removed manually but only by using administrative authority. Configuration Profiles can be deployed as follows: ● Using the Apple Configurator 2 tool ● Opening a file on the device: ❍ Via an email message ❍ Via a webpage ❍ Via a files folder ● Using over-the-air configuration as described in [DEV_MAN]☝ under Implementing Device Management » Deploying MDM Enrollment Profiles ● Using over-the-air configuration via an MDM Server To preserve the integrity, authenticity, and confidentiality of Configuration Profiles, they can be required to be digitally signed and encrypted. When the signature of the MDM payload is checked, there are the following possible outcomes: ● Signature verified ● Signature failed ● No signature present or signature cannot be verified due to other reasons (e.g., missing CA certificate) If the signature is successfully verified, then the payload is deployed. If the signature fails verification, then the payload is not deployed. If there is no signature or the signature cannot be verified due to other reasons, then the TOE checks the origin of the payload (i.e., its connection). If the connection to the MDM payload origin is trusted (i.e., the certificates can be validated and its signature checks out), the MDM payload is processed as trusted and deployed. This includes the Apple Configurator 2 tool as an MDM origin. (When you enroll the device into the Apple Configurator 2 tool, the device starts trusting the Apple Configurator 2 tool (i.e., it trusts its certificate).) Otherwise, the payload is not deployed. Managed items relevant for this Security Target that have to be configured using Configuration Profiles are as follows: ● The password policy—the administrator can define this using the Passcode Payload and: ❍ Define the minimum password length ❍ Define requirements for the password complexity ❍ Define the maximum password lifetime ❍ Define the maximum time of inactivity after which the device is locked automatically ❍ Define the maximum number of consecutive authentication failures after which the device is wiped ● The VPN policy as follows: ❍ Specify that VPN is always on Version: 1.1 Classification: Public Page 141 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ❍ Define the authentication method (certificate) ❍ Specification of certificates or shared keys ● The Wi-Fi policy as follows: ❍ The EAP types allowed including security type and authentication protocol (WL-1) ❍ CAs from which to accept WLAN authentication server certificates (WL-1) ❍ Client credentials to be used for authentication (WL-1) ❍ The service set identifiers (SSIDs) allowed to connect to (WL-2) ❍ The encryption type(s) allowed ❍ Enabling/disabling Wi-Fi hotspot functionality (WL-3) ❍ Disabling ad hoc wireless client-to-client connections a.k.a. AirDrop (WL-5)) ❍ Disable roaming capability (WL-6) ❍ Loading X.509 certificates into the TOE (WL-8) ❍ Revoking X.509 certificates loaded into the TOE (WL-9) ● General restrictions as follows: ❍ Allowing or disallowing specific services (e.g., remote backup) or using devices like the cameras ❍ Allowing or disallowing notifications when locked ❍ Allowing or disallowing a prompt when an untrusted certificate is presented in a TLS/ HTTPS connection ❍ Restricting Files USB drive access to encrypted Apple File System (APFS) The microphones cannot be disabled in general, but a user can restrict access to the microphones on a per- app basis. Other functions that can be enabled/disabled by an administrator are: ● The installation of applications by a user ● The possibility to perform backups to iCloud ● The ability to submit diagnostics automatically, ● The ability to use fingerprint authentication (Touch ID) or facial authentication (Face ID) for user authentication ● The ability to see notifications on the lock screen ● The ability to take screen shots ● The ability to accept untrusted TLS certificates ● The ability to perform unencrypted backups (via iTunes) Further restrictions can be enforced for enrolled devices. Those include: ● The ability to modify the account ● The ability to modify the cellular data usage ● The ability to pair with a host other than the supervision host ● The ability for the user to install Configuration Profiles or certificates interactively ● The ability for the user to use 'Enable Restrictions' interface A user can access available management functions via the menus of the graphical user interface. The functions are described in [iPad_UG]☝. Version: 1.1 Classification: Public Page 142 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Configuration Profiles can also be deployed such that users are unable to override or remove restrictions set in place by Administrators or MDM Administrators. Depending on the behavior defined in the Configuration Profile, users will be unable to access, perform, or relax management functions defined in Table 15, Table 16, and Table 17. In the most restrictive mode, users will not be able to access the options to alter the above functionality at all. In less restrictive modes, the user is only able to select more secure options. 7.1.5.3 Biometric Authentication Factors (BAFs) The enrollment and management of biometric authentication factors and credentials is detailed in [iPad_UG]☝. Enrollment for Touch ID is typically accomplished during initial device configuration but can also be performed using the Settings » Touch ID & Passcode menus. Multiple fingerprints may be enrolled, named, and deleted from this menu. In order to remove a specific finger, a user must tap the finger for removal followed by delete fingerprint. Users may place a finger on the Touch ID sensor to determine which biometric credential entry the finger is mapped to. Users may also disable Touch ID selectively for applications or entirely from the Settings » Touch ID & Passcode menu and turning off one or more of the following corresponding options: ● Unlock ● Apple Pay ● iTunes & App Store Enrollment for Face ID is typically accomplished during initial device configuration but can also be performed using the Settings » Face ID & Passcode menu by selecting the Set up Face ID option. Users can enroll an alternate appearance for Face ID, for a total of two enrollments. Users may remove Face ID biometric samples from the Settings » Face ID & Passcode and selecting the Reset Face ID option; this action resets both alternate appearances. Users may also disable Face ID selectively for applications or entirely from the Settings » Touch ID & Passcode menu and turning off one or more of the following corresponding options: ● Unlock ● Apple Pay ● iTunes & App Store ● Safari AutoFill When enrolling, naming, and deleting BAFs, the passcode must be successfully entered before changes can be made. An enrollment authentication template is created from the biometric data and stored inside the SEP. The authentication template cannot be retrieved from the SEP. Instead, the SEP can be asked to compare biometric data to the stored authentication template and will return a success or failure result. The biometric templates are protected by the passcode. To remove a biometric template or create a new enrollment authentication template, the user must first supply a valid passcode. This can be performed using the Settings » Face ID & Passcode for Face ID and the Settings » Touch ID & Passcode for Touch ID. 7.1.5.4 Device Unenrollment The TOE supports both preventing device unenrollment from an MDM server from occurring as well as applying remediation actions when a device is unenrolled. [DEV_MAN]☝ describes unenrollment options for the mobile device user through specifying the key "PayloadRemovalDisallowed" (found under Configuration Profiles » Profile-Specific Payload Keys » TopLevel » object TopLevel). This is an optional key. If present and set to true, the user cannot delete the profile unless the profile has a removal password and the user provides it. Version: 1.1 Classification: Public Page 143 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 It is up to the mobile device administrator to ensure that this key is set appropriately. In supervised mode, the MDM payload can be locked to the device. In addition, [DEV_MAN]☝ describes the additional ability to restrict the installation and removal of Configuration Profiles from other sources. This is achieved using the AccessRights key—found in [DEV_MAN]☝ under Configuration Profiles » Profile-Specific Payload Keys » Managed Devices » object MDM—which has a value of a logical OR of the following bits: Required ● 1—Allow inspection of installed Configuration Profiles ● 2—Allow installation and removal of Configuration Profiles ● 4—Allow device lock and passcode removal ● 8—Allow device erase ● 16—Allow query of Device Information (device capacity, serial number) ● 32—Allow query of Network Information (phone/SIM numbers, MAC addresses) ● 64—Allow inspection of installed provisioning profiles ● 128—Allow installation and removal of provisioning profiles ● 256—Allow inspection of installed applications ● 512—Allow restriction-related queries ● 1024—Allow security-related queries ● 2048—Allow manipulation of settings ● 4096—Allow app management Note that the AccessRights key may not be zero. If bit 2 is specified, then bit 1 must also be specified. If bit 128 is specified, then bit 64 must also be specified. When a device is unenrolled, the TOE's remediation action is to delete all MDM payloads regardless of whether they are locked to the device or not. This includes the following: ● Removal of Enterprise applications ● Removal of all device-stored Enterprise resource data ● Removal of Enterprise secondary authentication data There are no administrator-configurable unenrollment triggers. 7.1.5.5 Radios The following radios are found in the TOE: ● Bluetooth ● Cellular (Not supported by all device models. See Appendix A.1.) ● Wi-Fi These are more fully described, including the frequencies employed, in Appendix A.1 "Devices Covered by this Evaluation". As indicated in Table 15, users can enable/disable these radios. Depending on configuration settings, all radios can be enabled at boot time before the user interacts with the device. Any communication requiring credentials, such as a Wi-Fi passcode, can only commence after the user unlocks the device for the first time. This is due to the storage of the credentials in the keychain with Version: 1.1 Classification: Public Page 144 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 the protection class of requiring the user having initially unlocked the device. Communication requiring no credentials such as unprotected Wi-Fi may commence before the user unlocks the device in case the radio is enabled as per the system configuration. The radios are not required as part of the initialization of the device (i.e., the device will boot with the radios disabled). 7.1.5.6 Audio and Visual collection devices The following audio and visual collection devices are found in the TOE: ● Cameras ● Microphones Table 15 describes the roles that can enable/disable them. 7.1.5.7 VPN Certificate Credentials For the VPN, X.509v3 certificate-based authentication is allowed in the evaluated configuration. These credentials (X.509 certificates) are used by the device when connecting to the IPsec VPN infrastructure. 7.1.5.8 Removal of applications The following table indicates which application types can be removed along with the role that can remove them. Table 25: Removal of applications Application type Role allowed to remove the application Built-in applications (e.g., Camera, Calendar, Clock, Contacts, Settings, Messages, Safari, Wallet) Nobody (Some built-in apps allow their icon to be removed, but the app stays installed) User-installed applications User MDM-installed applications MDM-Administrator, User 7.1.6 Protection of the TSF (FPT) 7.1.6.1 Secure Boot Each step of the startup process contains components that are cryptographically signed by Apple to ensure integrity and that proceed only after verifying the chain of trust. This includes the bootloaders, kernel, kernel extensions, and baseband firmware. This secure boot chain helps ensure that the lowest levels of software are not tampered with. When a TOE device is turned on, its application processor immediately executes code from read-only memory known as Boot ROM. This immutable code, known as the hardware root of trust, is laid down during chip fabrication and is implicitly trusted. The Boot ROM code contains the Apple Root CA public key, which is used to verify that the iBoot bootloader is signed by Apple before allowing it to load. Because the Apple Root CA public key resides in immutable code, no software (including unverified or unauthorized software) can modify this public key. This is the first step in the chain of trust where each step ensures that the next is signed by Apple. When the iBoot finishes its tasks, it verifies and runs the TOE OS kernel. For devices with an Apple ARM A9 SoC or earlier, an additional Low-Level Bootloader (LLB) stage is loaded and verified by the Boot ROM and in turn loads and verifies iBoot. Version: 1.1 Classification: Public Page 145 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 A failure of the Boot ROM to load LLB (on older devices) or iBoot (on newer devices) results in the device entering DFU mode. In the case of a failure in LLB or iBoot to load or verify the next step, startup is halted and the device displays the connect to iTunes screen. This is known as recovery mode. In either case, the device must be connected to iTunes through USB and restored to factory default settings. The Boot Progress Register (BPR) is used by the SEP to limit access to user data in different modes and is updated before entering the following modes: ● Recovery Mode: Set by iBoot on devices with an Apple ARM A10 SoC and later as well as an Apple ARM M1 SoC and later ● DFU Mode: Set by Boot ROM on devices with an Apple ARM A12 SoC and later as well as an Apple ARM M1 SoC and later 7.1.6.2 Joint Test Action Group (JTAG) Disablement The TOE devices use a 2-staged interface that resembles the functionality of JTAG but does not implement the JTAG protocol. The Apple development environment that is JTAG-like is based on the following: ● To use this JTAG-like interface, a development-fused device is required. In a development-fused device, certain hardware fuses in the device are not blown during the manufacturing process that are blown in a production-fused device. Only with these development interface-related fuses intact, the JTAG-like interface is technically reachable. ● When having a development-fused device, the Apple developers are given a special cable that contains some additional computing logic. This cable establishes a serial channel with the mobile device's JTAG-like interface reachable on development-fused devices. This special cable connects to the development machine's USB port and allows subsequent access by development tools. The serial link allows access to the serial console of the mobile device. The serial console, however, does not allow access on a production-fused device. On a development-fused device, the root account is enabled and an SSH server is listening. The SSH server is accessible via the serial link and allows the developer to access the root account for development including uploading of software or modifying of installed software. 7.1.6.3 Secure Software Update Software updates to the TOE are released regularly to address emerging security concerns and also provide new features; these updates are provided for all supported devices simultaneously. A request is sent to the mobile device to pull the update from the servers. Mobile device users receive TOE OS update notifications on the mobile device, through the Finder application on macOS versions 10.15.0 (Catalina) and higher, through iTunes on macOS versions prior to 10.15.0 and on a PC. Note that the iTunes application is not available on macOS versions 10.15.0 and higher. Updates are delivered wirelessly, encouraging rapid adoption of the latest security fixes, as well as downloadable through the aforementioned iTunes and Finder applications. The startup process, described in Section 7.1.6.1 "Secure Boot" above, helps ensure that only Apple-signed code can be installed on a device. The Apple Root CA public key, which resides in immutable code as described in Section 7.1.6.1, is used in verifying the signed updates. To prevent devices from being downgraded to older versions that lack the latest security updates, the TOE OS uses a process called System Software Authorization. If downgrades were possible, an attacker who gains possession of a device could install an older version of OS and exploit a vulnerability that's been fixed in the newer version. Version: 1.1 Classification: Public Page 146 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The SEP also utilizes System Software Authorization to ensure the integrity of its software and prevent downgrade installations. The TOE OS software updates can be installed using the Finder application on macOS version 10.15.0 and higher, using iTunes on macOS versions prior to 10.15.0 and on PCs, or over-the-air (OTA) on the device via HTTPS trusted channel. With iTunes and Finder, a full copy of the latest OS is downloaded and installed. OTA software updates download only the components required to complete an update, improving network efficiency, rather than downloading the entire OS. Additionally, software updates can be cached on a local network server running the caching service on macOS Server so that the TOE devices do not need to access Apple servers to obtain the necessary update data. Software updates may also be cached on macOS version 10.13.0 and higher running the built-in caching service (in the client software). During a TOE OS upgrade, Finder/iTunes (or the device itself, in the case of OTA software updates) connects to the Apple installation authorization server and sends it a list of cryptographic measurements for each part of the installation bundle to be installed (for example, LLB, iBoot, the kernel, and OS image), a random anti-replay value (nonce), and the device's unique Exclusive Chip Identification (ECID). The authorization server checks the presented list of measurements against versions for which installation is permitted and, if it finds a match, adds the ECID to the measurement and signs the result. The server passes a complete set of signed data to the device as part of the upgrade process. Adding the ECID "personalizes" the authorization for the requesting device. By authorizing and signing only for known measurements, the server ensures that the update takes place exactly as provided by Apple. The boot-time, chain-of-trust evaluation verifies that the signature comes from Apple and that the measurement of the item loaded, combined with the device's ECID, matches what was covered by the signature. These steps ensure that the authorization is for a specific device and that an old OS version from one device cannot be copied to another. The nonce prevents an attacker from saving the server's response and using it to tamper with a device or otherwise alter the system software. Note that this ensures the integrity and authenticity of software updates. A TLS trusted channel is provided for this process. 7.1.6.4 Security Updates Apple generally does not disclose, discuss, or confirm security issues until a full investigation is complete and any necessary patches or releases are available. Once an issue has been confirmed and a patch has been made available, references containing technical details on the patches/Common Vulnerabilities and Exposures (CVEs), etc. are released. Apple also distributes information about security issues in its products through security advisories. Advisories are provided through the security-announce mailing list. Resources include the following: Report a security or privacy vulnerability https://support.apple.com//HT201220 Apple security updates https://support.apple.com//HT201222 Security-announce—Product security notifications and announcements from Apple https://lists.apple.com/mailman/listinfo/security-announce/ 7.1.6.5 Domain Isolation When a TOE device with cellular capabilities (i.e., a dialer) is in the lock state, only the Emergency Call dialer (Emergency SOS) is available to make a call. The Emergency Call interface does not support the entering of Unstructured Supplementary Service Data (USSD) or Man-Machine Interface (MMI) codes. On TOE devices, Version: 1.1 Classification: Public Page 147 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 USSD/MMI codes start with one or more of the following characters: number sign (#), asterisk (*). The Emergency Call interface ignores (i.e., does not send when the Call button is pressed) codes that start with one or more of these characters, thereby preventing the code actions from executing. The TOE also does not support auxiliary boot modes; therefore, the ability to enter codes using auxiliary boot modes does not exist. All applications are executed in their own domain (or 'sandbox'), which isolates the application from other applications and the rest of the system. Stack-based buffer overflow protection is implemented for every sandbox. They are also restricted from accessing files stored by other applications or from making changes to the device configuration. Each application has a unique home directory for its files, which is randomly assigned when the application is installed. If a third-party application needs to access information other than its own, it does so only by using services explicitly provided by the TOE OS. Stack-based buffer overflow protection implementations in the TOE OS include the following: ● Automatic reference counting (ARC): a memory management system that handles the reference count of objects automatically at compile time ● Address space layout randomization (ASLR): discussed below ● Stack-smashing protection: by utilizing a canary on the stack (Apple recommends that developers compile applications using the -fstack-protector-all compiler flag.) System files and resources are also shielded from the user's apps. The majority of the TOE OS runs as the non-privileged user "mobile," as do all third-party apps. The entire TOE OS partition is mounted as read-only. Unnecessary tools, such as remote login services, are not included in the system software, and APIs do not allow apps to escalate their own privileges to modify other apps or the TOE OS itself. Access by third-party apps to user information and features is controlled using declared entitlements. Entitlements are key value pairs that are signed in to an app and allow authentication beyond runtime factors like a UNIX user ID. Since entitlements are digitally signed, they cannot be changed. Entitlements are used extensively by system apps and daemons to perform specific privileged operations that would otherwise require the process to run as root. This greatly reduces the potential for privilege escalation by a compromised system application or daemon. Address space layout randomization (ASLR) protects against the exploitation of memory corruption bugs. All TSF binaries and libraries use ASLR to ensure that all memory regions are randomized upon launch. Xcode, the TOE OS development environment, automatically compiles third-party programs with ASLR support turned on. Address space layout randomization is used for every sandbox used to execute applications in. There are 8 bits of randomness, taken from the Secure Enclave's TRNG, involved in the randomization; the seed for the RNG comes from the seed that also feeds the approved DRBG for cryptographic use. In addition, the Memory Management Unit (MMU) supports memory address translation using a translation table maintained by the OS kernel. For each page, the MMU maintains flags that allow or deny the read, write, or execution of data. Execution, in this case, allows the CPU to fetch instructions from a given page. 7.1.6.6 Device Locking The TOE is locked after a configurable time of user inactivity or upon request of the user. When the device is locked, the class key for the 'Complete Protection' class is wiped 10 seconds after locking, making files in that class inaccessible. This also applies for the class key of the 'Accessible when unlocked' Keychain class. The lock screen of a device can be defined and set for supervised devices by an administrator using Apple Configurator 2 or an MDM service. The TOE can be locked remotely either via the iCloud "Lost Mode" function or by an MDM system if the device is enrolled in management. Version: 1.1 Classification: Public Page 148 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 7.1.6.7 Time The following security functional requirements make use of time (FPT_STM.1): ● FAU_GEN.1.2 and similar SFRs (Audit record time stamp) ● FIA_TRT_EXT.1 (Authentication throttling) ● FIA_UAU.7 (Protected authentication feedback) ● FIA_X509_EXT.1.1 (TOE certificate expiration validation) ● FIA_X509_EXT.3.1 (Application certificate expiration validation) ● FMT_SMF.1 Function 1 (Password lifetime) ● FMT_SMF.1 Function 2 (Screen-lock timeout management) ● FTA_SSL_EXT.1 (Lock state inactivity timeout) When the device starts and the "Set Automatically" setting is set on the device, the following services are used to synchronize the real-time clock on the device. The devices set time by GPS, unless GPS is unavailable in which case the Apple NTP server will be used. In the evaluated configuration, the "Set Automatically" setting must be set. When configured and maintained according to the Network, Identity and Time Zone (NITZ), Global Positioning Satellites (GPS), Network Time Protocol (NTP) standards, or the cellular carrier time service, the time may be considered reliable. 7.1.6.8 Inventory of TSF Binaries and Libraries The inventory of TSF binaries and libraries is provided in Appendix A.4 "Inventory of TSF Binaries and Libraries". All user space binaries (applications as well as shared libraries) are subject to address space layout randomization. The logic is implemented in the binary loader and agnostic of a particular file or its contents. 7.1.6.9 Self-Tests Self-tests are performed by the three cryptographic modules included in the TOE. These tests are sufficient to demonstrate that the TSF is operating correctly because they include each of the cryptographic modules included in the TSF. If the self-tests fail, then the TSF will not operate. In addition, the secure boot process begins in hardware and builds a chain of trust through software using the self-tested corecrypto modules, where each step ensures that the next is properly vetted before handing over control to that TSF executable. Secure boot of the devices ensures that the lowest levels of software are not tampered with and that only trusted operating system software from Apple loads at startup. In the devices, security begins in immutable code called the Boot ROM, which is laid down during chip fabrication and known as the hardware root of trust and continues through the loading of the TSF executables. 7.1.6.9.1 Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] The module performs self-tests to ensure the integrity of the module and the correctness of the cryptographic functionality at start up. In addition, the random bit generator requires continuous verification. The FIPS Self- Tests application runs all required module self-tests. This application is invoked by the TOE OS startup process upon device power on. The execution of an independent application for invoking the self-tests in the libcorecrypto.dylib library makes use of features of the TOE OS architecture: the module, implemented in libcorecrypto.dylib, is linked by the libcommoncrypto.dylib library, which is linked by the libSystem.dylib library. The libSystem.dylib is a library that Version: 1.1 Classification: Public Page 149 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 must be loaded into every application for operation. The library is stored in the kernel cache and, therefore, is not available in the file system as directly visible files. The TOE OS ensures that there is only one physical instance of the library and maps it to all applications linking to that library. In this way, the module always stays in memory. Therefore, the self-test during startup time is sufficient as it tests the module instance loaded in memory, which is subsequently used by every application on the TOE OS. All self-tests performed by the module are listed and described in this section. Power-Up Self-Tests The following tests are performed each time the Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] starts and must be completed successfully for the module to operate in the FIPS-approved mode. If any of the following tests fail, then the device powers itself off. To rerun the self-tests on demand, the user must reboot the device. If the following tests succeed, then the device continues with its normal power-up process. Cryptographic Algorithm Tests Table 26: Cryptographic Algorithm Tests Algorithm Modes Test AES implementations selected by the module for the corresponding environment AES-128 ECB, CBC, GCM, XTS KAT Separate encryption/decryption operations are performed DRBG (CTR_DRBG) N/A KAT HMAC-SHA-1, HMAC-SHA-256, HMAC- SHA-512 N/A KAT SigGen, SigVer Pair-wise consistency checks RSA Encrypt/ decrypt KAT, Separate encryption/decryption operations are performed ECDSA SigGen, SigVer Pair-wise consistency checks Diffie-Hellman "Z" computation N/A KAT EC Diffie-Hellman "Z" computation N/A KAT Software/Firmware Integrity Tests A software integrity test is performed on the runtime image of the Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1]. The module's HMAC-SHA-256 is used as a FIPS-approved algorithm for the integrity test. If the test fails, then the device powers itself off. If the test succeeds, then the device continues with its normal power-up process. Critical Function Tests No other critical function test is performed on power up. Conditional Tests The following items describe the conditional tests supported by the Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1]: ● Pair-wise Consistency Test Version: 1.1 Classification: Public Page 150 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 The module does generate asymmetric keys and performs all required pair-wise consistency tests, the encryption/decryption, as well as signature verification tests with the newly generated key pairs. ● SP800-90A Assurance Tests The module performs a subset of the assurance tests as specified in section 11 of [SP800-90A- Rev1]☝; in particular, it complies with the mandatory documentation requirements and performs known-answer tests and prediction resistance. ● Critical Function Test No other critical function test is performed conditionally. 7.1.6.9.2 Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1] The module performs self-tests to ensure the integrity of the module and the correctness of the cryptographic functionality at start up. In addition, the DRBG requires continuous verification. The FIPS Self-Tests functionality runs all required module self-tests. This functionality is invoked by the TOE OS Kernel startup process upon device initialization. If the self-tests succeed, then the module instance is maintained in the memory of the TOE OS Kernel on the device and made available to each calling kernel service without reloading. All self-tests performed by the module are listed and described in this section. Power-Up Tests The following tests are performed each time the Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1] starts and must be completed successfully for the module to operate in the FIPS-approved mode. If any of the following tests fail, then the device shuts down automatically. To run the self-tests on demand, the user may reboot the device. If the followings tests succeed, then the device continues with its normal power-up process. Cryptographic Algorithm Tests Table 27: Cryptographic Algorithm Tests Algorithm Modes Test AES implementations selected by the module for the corresponding environment AES-128 ECB, CBC, XTS KAT Separate encryption/decryption operations are performed DRBG (CTR_DRBG) N/A KAT HMAC-SHA-1, HMAC-SHA-256, HMAC-SHA-512 N/A KAT ECDSA SigGen, SigVer pair-wise consistency test RSA SigVer KAT Software/Firmware Integrity Tests A software integrity test is performed on the runtime image of the Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1]. The module's HMAC-SHA-256 is used as an Approved algorithm for the integrity test. If the test fails, then the device powers itself off. If the test succeeds, then the device continues with its normal power-up process. Critical Function Tests No other critical function test is performed on power up. Version: 1.1 Classification: Public Page 151 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Conditional Tests The following items describe the conditional tests supported by the Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1]: ● Continuous Random Number Generator Test The module performs a continuous random number generator test, whenever CTR_DRBG is invoked. In addition, the seed source implemented in the TOE OS kernel also performs a continuous self-test. ● Pair-wise Consistency Test The module generates asymmetric ECDSA key pairs and performs all required pair-wise consistency tests (signature generation and verification) with the newly generated key pairs. ● SP800-90A Assurance Tests The module performs a subset of the assurance tests as specified in section 11 of [SP800-90A- Rev1]☝; in particular, it complies with the mandatory documentation requirements and performs known-answer tests and prediction resistance. ● Critical Function Test No other critical function test is performed conditionally. 7.1.6.9.3 Apple corecrypto Module v13.0 [Apple ARM, Secure Key Store, Hardware, SL2] [FIPS140-3]☝ requires that the module perform self-tests to ensure the integrity of the module and the correctness of the cryptographic functionality at start up. In addition, the noise source feeding the random bit generator requires continuous verification. The module runs all required module self-tests pertaining to the firmware. This self-test is invoked automatically when starting the module. In addition, during startup of the hardware, the hardware DRBG invokes its independent self-test. The occurrence of a self-test error in either the firmware or the hardware DRBG triggers an immediate shutdown of the device preventing any operation. All self-tests performed by the module are listed and described in this section. Power-Up Tests The following tests are performed each time the TOE OS starts and must be completed successfully for the module to operate in the FIPS-approved mode. If any of the following tests fail, then the device powers itself off. To rerun the self-tests on demand, the user must reboot the device. If the followings tests succeed, then the device continues with its normal power-up process. Cryptographic Algorithm Tests Table 28: Cryptographic Algorithm Tests Algorithm Modes Test AES Implementation selected by the module for the corresponding environment AES-128 ECB, CBC KAT4 Separate encryption/decryption operations are performed AES SKG Hardware Accelerator Implementation AES-256 ECB KAT Separate encryption/decryption operations are performed 4 Self-test is subject to the "selector" approach for the different implementations of AES. Version: 1.1 Classification: Public Page 152 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Algorithm Modes Test AES SKG Hardware Accelerator Implementation AES-256 CBC KAT Encryption operation is performed Hardware DRBG (CTR_DRBG) N/A KAT HMAC-SHA-1, HMAC-SHA-256, HMAC-SHA-512 N/A KAT5 ECDSA SigGen, SigVer PCT EC Diffie-Hellman "Z" computation N/A KAT Software/Firmware Integrity Tests A software integrity test is performed on the runtime image of the TOE OS. The module's HMAC-SHA-256 is used as a FIPS-approved algorithm for the integrity test. If the test fails, then the device powers itself off. If the test succeeds, then the device continues with its normal power-up process. Critical Function Tests No other critical function test is performed on power up. Conditional Tests The following items describe the conditional tests supported by the Apple corecrypto Module v13.0 [Apple ARM, Secure Key Store, Hardware, SL2]: ● Pair-wise Consistency Test The module performs pair-wise consistency tests on asymmetric keys generated for ECDSA cipher. ● SP800-90A Assurance Tests The module performs a subset of the assurance tests as specified in section 11 of [SP800-90A- Rev1]☝; in particular, it complies with the mandatory documentation requirements and perform known-answer tests and prediction resistance. ● Critical Function Test No other critical function test is performed conditionally. 7.1.6.9.4 Application integrity Apple issues certificates to TOE OS application developers that developers use to sign their applications. The TOE OS checks each application's signature to ensure that it was signed using a valid Apple-issued certificate by using a hardware-protected asymmetric key. This applies to both application installation and application execution. 7.1.7 TOE Access (FTA) 7.1.7.1 Session Locking The TOE devices can be configured to transit to a locked state after a configurable time interval of inactivity. This time can be defined by an administrator using a Configuration Profile. 5 Self-test is subject to the "selector" approach for the different implementations of SHA. Version: 1.1 Classification: Public Page 153 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Displaying notifications when in the locked state can be prohibited via the allowLockScreenNotificationsView key in the Restrictions Payload of a Configuration Profile. 7.1.7.2 Restricting Access to Wireless Networks Users and administrators can restrict the wireless networks to which a TOE device connects. Using the Configuration Profile, administrators can define the wireless networks to which the device is allowed to connect using SSIDs and the EAP types allowed for authentication. This also includes the following attributes: ● Specification of the CA(s) from which the TSF will accept WLAN authentication server certificates(s) ● Security type ● Authentication protocol ● Client credentials to be used for authentication For the list of radios supported by each device, see Appendix A.1 "Devices Covered by this Evaluation". The standards listed there define the frequency ranges. 7.1.7.3 Lock Screen/Access Banner Display An advisory warning message regarding unauthorized use of the TOE can be defined using an image that is presented during the lock screen. Configuration for this is described in FMT_SMF.1 Function 36. Because the banner is an image, there are no character limitations. Information is restricted to what can be included in an image appropriate to the device display. 7.1.8 Trusted Path/Channels (FTP) The TOE provides secured (encrypted and mutually authenticated) communication channels between itself and other trusted IT products through the use of the protocols listed in Table 29. Table 29: Protocols used for trusted channels Protocol ST requirements Used for 802.11ax 802.11ac-2013 In addition to the minimum trusted channel requirements and supported by FCS_COP.1. Wireless access points 802.11-2012 FTP_ITC_EXT.1 FTP_ITC.1/WLAN Wireless access points 802.1X FTP_ITC_EXT.1 FTP_ITC.1/WLAN WLAN EAP-TLS FTP_ITC_EXT.1 FTP_ITC.1/WLAN WLAN TLS 1.1 FCS_TLSC_EXT.1/WLAN Secure data transfer TLS 1.2 FCS_TLSC_EXT.1 FCS_TLSC_EXT.1/WLAN FDP_UPC_EXT.1/APPS Secure data transfer IPsec FCS_IPSEC_EXT.1 FTP_ITC_EXT.1 VPN Version: 1.1 Classification: Public Page 154 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Protocol ST requirements Used for Bluetooth (v4.2, v5.0, v5.2, v5.3) with BR/EDR and LE FDP_UPC_EXT.1/BLUETOOTH Trusted IT products HTTPS FCS_HTTPS_EXT.1 FDP_UPC_EXT.1/APPS FTP_ITC_EXT.1 FTP_ITC_EXT.1(2) FTP_TRP.1(2) OTA updates; secure communication over a network IPsec supports authentication using shared keys or certificate-based authentication. The TOE's TLS client supports certificate-based mutual authentication. 7.1.8.1 EAP-TLS and TLS For Wi-Fi, the TOE supports EAP-TLS using TLS v1.1 and v1.2 and supports the following ciphersuites: ● TLS_RSA_WITH_AES_128_CBC_SHA as defined in RFC 5246 ● TLS_RSA_WITH_AES_128_CBC_SHA256 as defined in RFC 5246 ● TLS_RSA_WITH_AES_256_CBC_SHA256 as defined in RFC 5246 EAP-TLS can be configured as one of the EAP types accepted using the AcceptEAPTypes key in the Wi-Fi payload of the Configuration Profile. When configuring the TOE to utilize EAP-TLS as part of a Wi-Fi Protected Access 2 (WPA2) or Wi-Fi Protected Access 3 (WPA3) protected Wi-Fi-network, the CA certificate(s) to which the server's certificate must chain can be configured using the PayloadCertificateAnchorUUID key in the Wi-Fi payload of the Configuration Profile. Using the PayloadCertificateAnchorUUID and TLSTrustedServerNames keys in the Wi-Fi payload of the Configuration Profile, the administrator can enforce that untrusted certificates are not accepted and the authentication fails if such an untrusted certificate is presented. The TOE also provides mobile applications TLS version 1.2 (client) capabilities via an API service that includes support for the following ciphersuites from FCS_TLSC_EXT.1: ● TLS_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5288 ● TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 as defined in RFC 5289 ● TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5289 ● TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 as defined in RFC 5289 ● TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 as defined in RFC 5289 In addition to these ciphersuites that have been tested as part of the evaluation, other ciphersuites are supported by the TOE. These are listed at https://developer.apple.com/documentation/security/1550981-ssl_cipher_suite_values?language=objc Furthermore, the elliptic curve cipher suites above may utilize the following supported elliptic curve extensions by default: ● secp256r1 (P-256) ● secp384r1 (P-384) Version: 1.1 Classification: Public Page 155 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● secp521r1 (P-521) (SigGen/SigVer only) The additional supported elliptic curve extension below is also always enabled by the TOE OS: ● Curve25519 The TOE OS supports RSA [SP800-56B-Rev1]☝ key establishment schemes as both a sender (e.g., when starting a TLS session) and a recipient (e.g., during a rekey triggered by the remote endpoint). When an application uses the provided APIs to attempt to establish a trusted channel, the TOE will compare the Subject Alternative Name (SAN) contained within the peer certificate (specifically the SAN fields, IP Address, and Wildcard certificate if applicable) to the Fully Qualified Domain Name (FQDN) of the requested server. The Common Name (CN) is ignored. If the FQDN in the certificate does not match the expected SAN for the peer, then the application cannot establish the connection. Applications can request from the TOE the list of ciphersuites supported and then define which of the supported ciphersuites they enable for the TLS-protected session they are going to set up. Once the connection has been set up, the application can retrieve the ciphersuite negotiated with the communication partner. When setting up a TLS session, the library function for the handshake (SSLHandshake) will indicate, via a result code, any error that occurred during the certificate chain validation. Communication between the MDM Agent and the MDM Server is protected by HTTPS (which employs TLS) using the above supported cipher specifications. Certificate pinning is supported and is described in [CertPinning]☝. The user of the TLS framework can use this certificate pinning support. However, existing TLS clients in the TOE, such as the Safari browser, do not support certificate pinning. WLAN also does not support certificate pinning. 7.1.8.1.1 TLS mutual authentication For TLS mutual authentication, each application can have one or more client certificates. For X.509 certificates, the TOE allows applications to store client certificates in either a P12 file or in a keychain. A P12 file only holds one client certificate, but a keychain can hold multiple client certificates. For applications that use a P12 file, there is only one client certificate choice when performing TLS mutual authentication. The application passes this choice to the TLS API. For applications that use a keychain, there may be multiple client certificate choices. An application can select the appropriate client certificate from the keychain and pass the selected certificate to the TLS API or it can pass an array of client certificates to the TLS API. The TLS API uses the first certificate in the array and ignores the other certificates in the array when establishing a connection. There are no other factors beyond configuration necessary to engage in mutual authentication. 7.1.8.1.2 TLS client renegotiation The TOE supports TLS client secure renegotiation through the use of the "renegotiation_info" TLS extension in accordance with [RFC5746]☝. 7.1.8.2 Bluetooth The TOE supports Bluetooth (v4.2, v5.0, v5.2, v5.3) including Basic Rate/Enhanced Data Rate (BR/EDR) and Low Energy (LE) with the following Bluetooth profiles: ● Hands-Free Profile (HFP 1.6) ● Phone Book Access Profile (PBAP) ● Advanced Audio Distribution Profile (A2DP) Version: 1.1 Classification: Public Page 156 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● Audio/Video Remote Control Profile (AVRCP 1.4) ● Personal Area Network Profile (PAN) ● Human Interface Device Profile (HID) ● Message Access Profile (MAP) By default, Bluetooth is enabled. The supported Bluetooth version depends on the device. For the mapping of devices to Bluetooth versions, see Appendix A.1 "Devices Covered by this Evaluation". Users can pair their TOE device with a remote Bluetooth device using the 'Set up Bluetooth Device' option from the Bluetooth status menu. They can also remove a device from the TOE's device list. Explicit user authorization is required for both pairing and removing a Bluetooth device from the TOE's device list. Manual authorization is implicitly configured since pairing can only occur when explicitly authorized through the Settings » Bluetooth interface. During the pairing time, another device (or the TOE OS) can send a pairing request. Commonly, a six-digit number is displayed on both sides, which must be manually matched by a user (i.e., the PIN is shown and the user must accept it before the pairing completes). If one device does not support this automatic exchange of a PIN, a window for entering a manual PIN is shown. That PIN must match on both sides. The TOE automatically authorizes the remote Bluetooth device during pairing for all Bluetooth profiles the remote device announces to support during the pairing operation. This approach avoids user confusion between a paired device to which the TOE is connected and authorized and thus can communicate with and a device to which the TOE is connected but not yet authorized with which the TOE cannot yet communicate. To de-authorize a device, the user would unpair the device. The TOE establishes a "trusted relationship" with an authorized device at the time of pairing. The only difference in behavior between a trusted device and an untrusted device is that the untrusted device must first be manually authorized as described in the previous paragraph. The TOE requires that remote Bluetooth devices support an encrypted connection. Devices that want to pair with the TOE via Bluetooth are required by the TOE OS to use Secure Simple Pairing, which uses ECDH-based authentication and key exchange with curve P-256. See the Bluetooth Specifications [BT_SPEC]☝ for details. The TOE generates a new ephemeral ECDH key pair for every new connection attempt. The ECDH keys are generated in user space using the corecrypto user space module. No data can be transferred via Bluetooth until pairing has been completed. The TOE terminates the connection if the remote device stops encryption while connected to the TOE. The only time the device is Bluetooth discoverable is when the Bluetooth configuration panel is active and in the foreground (there is no toggle switch for discoverable or not discoverable—unless the configuration panel is the active panel, the device is not discoverable). Connections via BR/EDR and LE are secured using 128-bit AES Counter with CBC-MAC (AES-CCM-128) mode. The Wi-Fi chip performs the bulk Bluetooth AES-CCM-128 cryptography. No other key sizes are supported; thus, smaller key sizes cannot be negotiated. A local database is kept of all Bluetooth device addresses for paired devices, which is checked prior to any automatic connection attempt. Bluetooth devices may not establish more than one connection. Multiple connection attempts (i.e., pairing and session initialization attempts) from the same BD_ADDR for an established connection will be discarded. For details of the security of Bluetooth/LE, see the Bluetooth Specifications [BT_SPEC]☝. The TOE supports the Logical Link Control and Adaptation Layer Protocol (L2CAP) through an API in the IOBluetoothDevice class. An RFCOMM channel object can be obtained by opening an RFCOMM channel in a device or by requesting a notification when a channel is created (this is commonly used to provide services). See the IOBluetooth RFCOMMChannel class. Version: 1.1 Classification: Public Page 157 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 A service ID is used to identify the local service. 7.1.8.3 Wireless LAN (WLAN) The TOE implements the wireless LAN protocol as defined in IEEE 802.11 (2012). The TOE uses the random number generators of the corecrypto cryptographic modules for the generation of keys and other random values used as part of this protocol. As required by IEEE 802.11 (2012), the TOE implements the CTR with CBC-MAC protocol (CCMP) with AES (128-bit key) as defined in section 11.4.3 of 802.11. This protocol is mandatory for IEEE 802.11 (2012) and is also the default protocol for providing confidentiality and integrity for wireless LANs that comply with IEEE 802.11. Newer device models support AES-CCMP-256 with 256-bit keys following IEEE 802.11ac-2013 as well as AES- GCMP-256 with 256-bit key sizes, respectively, following IEEE 802.11ac-2013. The implementation of these AES algorithms is performed by the bulk encryption operation of the Wi-Fi chip. AES key wrapping as defined in [SP800-38F]☝ is used to wrap the Group Temporal Key (GTK), which is sent in an Extensible Authentication Protocol (EAPOL) key frame in message three of the 4-way handshake defined in section 11.6.2 of IEEE 802.11 (2012). AES key unwrapping used to unwrap the GTK is performed as described in [SP800-38F]☝ section 6.1, Algorithm 2: W-1 (C), and in section 6.2, Algorithm 4: KW-AD(C). Additionally, PRF-384 is implemented as defined in IEEE 802.11-2012, "Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications", section 11.6.1.2. It is implemented in the TOE as part of the WPA implementation and is used for the key generation of AES keys when the Counter Mode CBC-MAC Protocol (CCMP) cipher (defined in section 11.4.3.1 of IEEE 802.11-2012) is used. PRF-704 is implemented as defined by IEEE 802.11ac-2013 for TOE device models supporting GCMP. The random bit generator used is the one provided by the main device (i.e., FCS_RBG_EXT.1/SW). The Wi-Fi Alliance certificates for the devices in this evaluation are in Appendix A.2 "Wi-Fi Alliance Certificates". 7.1.8.4 VPN 7.1.8.4.1 AlwaysOn VPN For managed and supervised devices, the TOE must be configured with an 'AlwaysOn' VPN where the organization has full control over device traffic by tunneling all IP traffic back to the organization using an Internet Key Exchange (IKE) v2 based IPsec tunnel. A specific set of configuration key values dedicated to the VPN type 'AlwaysOn' allows for: ● The specification of the interfaces (cellular and/or Wi-Fi) for which the VPN is 'AlwaysOn' (default is: for both cellular and Wi-Fi) ● The specification of exceptions from this service (AirPrint, cellular services, voicemail) ● The definition of exceptions for Captive networking (if any) The TOE supports separate configurations for cellular and Wi-Fi. Captive networks are also known as "subscription" or "Wi-Fi Hotspot" networks where the user must communicate with the Hotspot (e.g., to log in, to agree to Terms of Use) before gaining access to the network. These are often found in public locations. For a captive network connection using an ‘AlwaysOn’ VPN, the TOE supports the use of a captive network application prior to the VPN establishment on that connection to perform any captive network handling (communication). Once the captive network application completes, the VPN is established and all traffic goes through the VPN. Version: 1.1 Classification: Public Page 158 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 For IKEv2, the configuration contains the following (among other items): ● The IP address or hostname of the VPN server ● The identifier of the IKEv2 client in one of the supported formats ● The authentication method (shared key or certificate) ● The server certificate (for certificate-based authentication) ● If extended authentication is enabled ● The encryption algorithm (allows for AES-CBC-128, AES-CBC-256 (default), AES-GCM-128, and AES-GCM-256. Single DES and 3DES shall not be used in the evaluated configuration.) ● The integrity algorithm allows for SHA1-160, SHA2-256 (default), SHA2-384, and SHA2-512. (SHA1-96 must not be used in the evaluated configuration.) 7.1.8.4.2 IPsec General IPsec is implemented in the TOE natively, as part of the TOE OS, hence the packets are processed by the TOE. Packets are processed in little-endian order. There is no separate "client" application; the VPN tunnels are configured and controlled by Network Extension Framework, which is a part of the Core OS Layer described in Section 1.5.2 "TOE Architecture". The TOE implements the IPsec protocol as specified in [RFC4301]☝. Configuration of VPN connection setting, such as authentication method and algorithm selection, is performed by the IPsec VPN client administrator. The TOE enforces an "always on" configuration, meaning that all traffic entering and leaving the TOE platform interfaces is protected via an IPsec VPN connection. The TOE allows a limited number of services to be configured to either not allow (DISCARD) or be sent plaintext (BYPASS). These services include AirPrint, cellular services, voicemail, and applications that make use of Captive Networking Identifiers. All other communications are always sent through the IPsec tunnel (PROTECT within the Security Policy Database (SPD)). In order to set a service to match a PROTECT rule in the SPD, select "Allow traffic via tunnel". "Drop Traffic" will cause that traffic to match a DISCARD rule. "Allow traffic outside tunnel" will create a BYPASS rule for that service. The SPD is implemented by the TOE, which, as a managed device, is configured using a Configuration Profile either manually, through the Apple Configurator 2, or via an MDM solution. See Section 7.1.5.2 "Configuration Profiles" for more information. All data, other than that described in Section 7.1.8.4.1, is sent through the encrypted tunnel. Any other plaintext data that is received is ignored (discarded). Discarding happens automatically without the need to configure an explicit discard. There are no differences in the routing of IP traffic when using any of the supported baseband protocols. The VPN payload—described in [DEV_MAN]☝ under Configuration Profiles » Profile-Specific Payload Keys » VPN » object VPN—specifies how a packet is processed against the SPD and includes IPsec Dictionary Keys, IKEv2 Dictionary Keys, DNS Dictionary Keys, Proxies Dictionary Keys, and AlwaysOn Dictionary Keys. In the evaluated configuration, a catch-all value must be set. The TOE also provides an API for third-party VPN clients. The TOE supports enable/disable of VPN protection both across the device as well as on a per-app basis (see FMT_SMF.1 Function 3 enable/disable the VPN protection). The TOE OS is responsible for each type of VPN auditable event. 7.1.8.4.3 IPsec Characteristics The TOE platform supports the following IPsec connection characteristics: Version: 1.1 Classification: Public Page 159 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● IKEv2 (as defined in RFCs 7296 and 4307) ● Tunnel Mode ● Symmetric algorithms for IKE and ESP encryption (AES-GCM-128, AES-GCM-256, AES-CBC-128, and AES-CBC-256) ● Integrity mechanisms (HMAC-SHA-1, HMAC-SHA-256, HMAC-SHA-384, and HMAC- SHA-512) ● Key Exchange (Diffie-Hellman Groups): ❍ DH Group 14 (2048-bit MODP) ❍ DH Group 15 (3072-bit MODP) ❍ DH Group 19 (256-bit Random ECP) ❍ DH Group 20 (384-bit Random ECP) Each of these cryptographic mechanisms is provided by one of the following two cryptographic modules: Apple corecrypto Module v13.0 [Apple ARM, User, Software, SL1] or Apple corecrypto Module v13.0 [Apple ARM, Kernel, Software, SL1]. The key generation and key establishment for VPN are handled in the user space, while the bulk encryption is handled in the kernel space. The VPN seeds its private copy of the CTR_DRBG present in the corecrypto instance used by the VPN client with 384 bits of entropy, invokes the corecrypto ECDH or DH APIs to generate the appropriate keys using key material generated by the CTR_DRBG, and follows the key establishment algorithms defined in [SP800-56A-Rev3]☝, ECDSA key generation algorithm in [FIPS186-4]☝, Diffie-Hellman Group (MODP) key generation [RFC 3526], and IKEv2 key derivation function in [RFC5996]☝. 7.1.8.4.4 Peer authentication The supported peer authentication mechanisms include RSA or ECDSA X.509v3 digital certificate authentication. As part of the peer authentication process, a comparison is made of the Subject Alternative Name (SAN) contained within the peer certificate to the to the Fully Qualified Domain Name (FQDN) of the requested server. The Common Name (CN) is ignored. If the FQDN in the certificate does not match the expected SAN for the peer, then the session will not be established. If the SAN in the peer certificate does not match that of the peer's identifier or a SAN does not exist in the peer certificate, the authentication process fails. If the SAN matches the peer's identifier, the authentication process is successful. 7.1.8.4.5 IKE The TOE (and product) only supports IKEv2. The TOE supports configurable time-based lifetimes for both IKEv2 Phase 1 and Phase 2 SAs. Phase 1 SAs are configurable to 24 hours and phase 2 SAs are configurable to 8 hours. Configuration settings are applied to the TOE via .xml profiles. These profiles can be generated via an MDM, an Apple-specific tool such as "Apple Configurator 2," or by manually editing the .xml file directly. The TOE generates the secret value 'x' and nonces used in the IKEv2 Diffie-Hellman key exchanges using the TOE's software DRBG (as specified in FCS_RBG_EXT.1/SW). The possible lengths of 'x' and the nonces are 224, 256, or 384 bits. The strength of the symmetric algorithm (in terms of the number of bits in the key) negotiated to protect the IKEv2/IKE_SA connection and the strength of the symmetric algorithm negotiated to protect the IKEv2 CHILD_SA connection is configured using .xml configuration files. The administrator must explicitly choose the cryptographic algorithms (including key strength) used for each SA. Key strength must be one of 128 or 256 bits as specified in the IKEv2 Dictionary Keys, EncryptionAlgorithm Key. Version: 1.1 Classification: Public Page 160 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 In the evaluated configuration, during negotiation, the TOE will only negotiate the configured algorithms, which must include an IKEv2/IKE_SA at least that of IKEv2 CHILD_SA. This configuration is specified in [CCGUIDE]☝. 7.1.8.4.6 Residual information protection and packet processing When a network packet is received, the TCP/IP stack allocates a new buffer in memory of the same size as the incoming packet then copies the packet into the new buffer, thereby overwriting the entire allocated buffer. The packet is only referred to by reference/address, not copied. The VPN encrypts and decrypts the packets in place because the size of the data does not change when using symmetric ciphers. 7.1.9 Security Audit (FAU) 7.1.9.1 Audit Records The TOE logging capabilities are able to collect a wide array of information concerning TOE usage and configuration. The available commands and responses constitute audit records and must be configured by TOE administrators using profiles that are further explained in Section 7.1.5.2 "Configuration Profiles". These profiles must also be used to determine the audit storage capacity as well as default action when capacity is reached. Although the specific audit record format is determined via Configuration Profile, the following attributes form the baseline: ● Date and time the audit record was generated ● Process ID or information about the cause of the event ● Information about the intended operation ● Success or failure (where appropriate) Audit record information is not available to TOE users or administrators on TOE devices and is only accessible externally on trusted workstations via the Apple Configurator 2 or to an MDM server on enrolled devices. Depending on the underlying OS of the trusted workstation or MDM server, the audit records are transferred to the following locations: ● macOS ❍ ~/Library/Logs/CrashReporter/MobileDevice/[Your_Device_Name]/ ● Windows ❍ C:\Users\[Your_User_Name]\AppData\Roaming\Apple Computer\Logs\CrashReporter \MobileDevice\[Your_Device_Name]\ 7.1.9.2 MDM Agent Alerts The MDM Agent generates and sends an alert in response to an MDM server request (i.e., applying a policy, receiving a reachability event). The Status key field in Table 30 is used as the alert message to satisfy the FAU_ALT_EXT.2 requirements. The MDM Agent's response is being used as the alert transfer mechanism. When a Configuration Profile is sent to an MDM Agent, the MDM Agent responds using an "Alert", the MDM Result Payload, a plist-encoded dictionary containing the following keys, as well as other keys returned by each command. Table 30: MDM Agent Status Commands Key Type Content Status String Status. Legal values are described as: Version: 1.1 Classification: Public Page 161 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Key Type Content Status value Description Acknowledged Everything went well. Error An error has occurred. See the ErrorChain for details. CommandFormatError A protocol error has occurred. The command may be malformed. Idle The device is idle (there is no status). NotNow The device received the command but cannot perform it at this time. It will poll the server again in the future. UDID String Unique Device ID (UDID) of the device CommandUUID String Universally Unique ID (UUID) of the command that this response is for (if any) ErrorChain Array Optional—Array of dictionaries representing the chain of errors that occurred During installation: ● The user or administrator tells the device to install an MDM payload. The structure of this payload is described in [DEV_MAN]☝ under Configuration Profiles » Profile-Specific Payload Keys » Managed Devices » object MDM. ● The device connects to the check-in server. The device presents its identity certificate for authentication, along with its UDID and push notification topic. Note: Although UDIDs are used by MDM, the use of UDIDs is deprecated for TOE OS apps. If the server accepts the device, the device provides its push notification device token (Device Push Token) to the server. The server should use this token to send push messages to the device. This check-in message also contains a PushMagic string. The server must remember this string and include it in any push messages it sends to the device. During normal operation: ● The server (at some point in the future) sends out a push notification to the device. ● The device polls the server for a command in response to the push notification. ● The device performs the command. ● The MDM Agent contacts the server to report the result of the last command and to request the next command. From time to time, the Device Push Token may change. When a change is detected, the device automatically checks in with the MDM Server to report its new push notification token (Device Push Token). Note: The device polls only in response to a push notification; it does not poll the server immediately after installation. The server must send a push notification to the device to begin a transaction. The MDM Agent initiates communication with the MDM Server in response to a push notification by establishing an HTTPS connection to the MDM Server URL. The MDM Agent validates the server's certificate and then uses the identity specified in its MDM payload as the client authentication certificate for the connection. Version: 1.1 Classification: Public Page 162 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 When an MDM Server wants to communicate with a TOE device, a silent notification is sent to the TOE's MDM Agent via the Apple Push Notification (APN) service, prompting it to check in with the server. The process of notifying the MDM Agent does not send any proprietary information to or from the APNS. The only task performed by the push notification is to wake the device so it checks in with the MDM Server. 7.1.9.2.1 Queuing of Alerts In cases where the HTTPS channel is unavailable, for example because the device is out of range of a suitable network, an alert regarding the successful installation of policies is queued until the device is able to communicate with the server again. The queue cannot become long because if the device is out of communication with the MDM Server, no additional requests can be received. If the MDM Server does not receive the alert, the MDM Server should re-initiate the transfer until a response is received from the device. There are certain times when the device is not able to do what the MDM Server requests. For example, databases cannot be modified while the device is locked with Data Protection. When a device cannot perform a command due to these types of situations, it will send the NotNow status without performing the command. The server may send another command immediately after receiving this status but chances are the following command will also be refused. After sending a NotNow status, the device will poll the server at some future time. The device will continue to poll the server until a successful transaction is completed. The device does not cache the command that was refused. If the server wants the device to retry the command, it must send the same command again later, when the device polls the server. The server does not need to send another push notification in response to this status. However, the server may send another push notification to the device to have it poll the server immediately. The following commands are guaranteed to execute on the TOE OS and never return NotNow: ● DeviceInformation ● ProfileList ● DeviceLock ● EraseDevice ● ClearPasscode ● CertificateList ● ProvisioningProfileList ● InstalledApplicationList ● Restrictions 7.1.9.2.2 Alerts on successful application of policies Candidate policies are generated by the administrator and disseminated as a Configuration Profile using one of the methods already described in Section 7.1.5.2 "Configuration Profiles". The protocol for managing Configuration Profiles between the MDM Server and the MDM Agent is defined in [DEV_MAN]☝ under Configuration Profiles » Profile-Specific Payload Keys » Managed Devices » object MDM. When the application of policies to a mobile device is successful, the MDM Agent replies with an MDM Result Payload with Status value "Acknowledged". If a policy update is not successfully installed, then the MDM Agent replies with an MDM Result Payload with Status value "Error" or CommandFormatError, "Idle" and "NotNow". Version: 1.1 Classification: Public Page 163 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 7.1.9.2.3 Alerts on receiving periodic reachability events Periodic reachability events are initiated by the MDM Server using Push Notifications. When a periodic reachability event is received, the MDM Agent contacts the server in the manner described in Section 7.1.9.1 "Audit Records," above. Version: 1.1 Classification: Public Page 164 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 8 Abbreviations, Terminology, and References 8.1 Abbreviations A2DP Advanced Audio Distribution Profile ABM Apple Business Manager ACL Access Control List AES Advanced Encryption Standard APFS Apple File System API Application Programming Interface APN Apple Push Notification APNS Apple Push Notification Service ARC Advanced Reference Counting ARM Advanced RISC Machine ASLR Address Space Layout Randomization AVRCP Audio/Video Remote Control Profile BAF Biometric Authentication Factor BMD Biometric Management Design BR/EDR Basic Rate/Enhanced Data Rate CAVP Cryptographic Algorithm Validation Program CBC Cipher Block Chaining CC Common Criteria Version: 1.1 Classification: Public Page 165 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 CCM Counter with CBC-MAC CCMP Counter Mode CBC-MAC Protocol CDMA Code Division Multiple Access CMC Certificate Management over CMS CMS Cryptographic Message Syntax CN Common Name CTR Counter CVE Common Vulnerabilities and Exposures DAR Data at Rest DC-HSDPA Dual-Carrier High Speed Downlink Packet Access DEK Data Encryption Key DES Data Encryption Standard DFU Device Firmware Upgrade DH Diffie-Hellman DMA Direct Memory Access DN Distinguished Name DNS Domain Name Server DRBG Deterministic Random Bit Generator DSA Digital Signature Algorithm Version: 1.1 Classification: Public Page 166 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 DNS Domain Name System DTLS Datagram Transport Layer Security EAL Evaluation Assurance Level EAP Extensible Authentication Protocol EAPOL Extensible Authentication Protocol Over LAN EAP-TLS Extensible Authentication Protocol Transport Layer Security EAR Entropy Assessment Report EC Elliptic Curve ECB Electronic Codebook ECC Elliptic Curve Cryptography ECDH Elliptic Curve Diffie-Hellman ECDSA Elliptic Curve Digital Signature Algorithm ECID Exclusive Chip Identification EDGE Enhanced Data rates for GSM Evolution EKU extendedKeyUsage EST Enrollment over Secure Transport EV-DO Evolution-Data Optimized FAR False Acceptance Rate FDD-LTE Frequency-Division Duplex-Long Term Evolution Version: 1.1 Classification: Public Page 167 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 FIA False Acceptance Rate FIPS Federal Information Processing Standard FPN Fixed Pattern Noise FQDN Fully Qualified Domain Name FRR False Rejection Rate GCM Galois/Counter Mode GID Group Key GPS Global Positioning Satellites GSM Global System for Mobile GTK Group Temporal Key HCI Host Controller Interface HFP Hands-Free Profile HID Human Interface Device Profile HMAC Keyed-hash Message Authentication Code HTTPS Hypertext Transfer Protocol Secure HSDPA High Speed Downlink Packet Access HSPA+ High Speed Packet Access Plus ID Identity IKE Internet Key Exchange Version: 1.1 Classification: Public Page 168 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 IOMMU Input–Output Memory Management Unit IPsec Internet Protocol Security ISA Instruction Set Architecture IV Initialization Vector JSON JavaScript Object Notation JTAG Joint Test Action Group KAT Known Answer Test KDF Key Derivation Function KEK Key Encryption Key KEXT Kernel Extension KW Key Wrap L2CAP Logical Link Control and Adaptation Protocol LE Low Energy LLB Low-Level Bootloader ltc LibTomCrypt LTE Long Term Evolution MAC Message Authentication Code MAP Message Access Profile MD Mobile Device Version: 1.1 Classification: Public Page 169 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 MDFPP Mobile Device Fundamentals Protection Profile MDM Mobile Device Management MMI Man-Machine Interface MMU Memory Management Unit NDRNG Non-deterministic Random Number Generator neon ARM NEON instructions NITZ Network, Identity and Time Zone NTP Network Time Protocol OCSP Online Certificate Status Protocol OSP Organizational Security Policy OTA Over-the-Air OTP-ROM One Time Programmable Read-Only Memory PAA Processor Algorithm Accelerator PAD Presentation Attack Detection PAE Port Access Entity PAN Personal Area Network Profile PBAP Phone Book Access Profile PBKDF Password-Based Key Derivation Function PCIe Peripheral Component Interconnect Express PHY Physical Layer Version: 1.1 Classification: Public Page 170 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 PKCS Public Key Cryptography Standards PMK Pairwise Master Key POST Power-On Self-Tests PP Protection Profile PRF Pseudorandom Function RAM Random Access Controller RBG Random Bit Generator RFCOMM Radio Frequency Communication REK Root Encryption Key RFC Request for Comment RISC Reduced Instruction Set Computing RSA Rivest-Shamir-Adleman S/MIME Secure/Multipurpose Internet Mail Extensions SA Security Association SAN Subject Alternative Name SAR Security Assurance Requirement SCDMA Synchronous Code Division Multiple Access SCEP Simple Certificate Enrollment Protocol SDIO Secure Digital Input Output Version: 1.1 Classification: Public Page 171 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SEE Separate Execution Environment SEP Secure Enclave Processor SFR Security Functional Requirement SHA Secure Hash Algorithm SHS Secure Hash Standard SigGen Signature Generation SigVer Signature Verification skg Secure Key Generation SKS Secure Key Store SiP System-in-Package SoC System on a Chip SP Security Policy SP Special Publication SPD Security Policy Database SSID Service Set Identifier SSL Secure Sockets Layer ST Security Target TD Technical Decision TD-LTE Time Division Long-Term Evolution Version: 1.1 Classification: Public Page 172 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 TD-SCDMA Time Division Synchronous Code Division Multiple Access TLS Transport Layer Security TOE Target of Evaluation TRNG True Random Number Generator TSF TOE Security Functionality TSS TOE Summary Specification UDID Unique Device Identifier UI User Interface UMTS Universal Mobile Telecommunications System USSD Unstructured Supplementary Service Data UID Unique Identifier UUID Universally Unique Identifier vng Vector Next Generation VPN Virtual Private Network VPP Volume Purchase Program WLAN Wireless Local Area Network WPA2 Wi-Fi Protected Access 2 WPA3 Wi-Fi Protected Access 3 XN Execute Never XEX Xor-Encrypt-Xor Version: 1.1 Classification: Public Page 173 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 XTS XEX-based tweaked-codebook mode with ciphertext stealing 8.2 References Apple Business Manager User Guide Date 2022-04-27 ABM_Guide Location https://support.apple.com/guide/apple-business-manager/welcome/w eb Apple Configurator 2 User Guide Date 2022 AConfig Location https://support.apple.com/guide/apple-configurator-2/welcome/mac PP-Module for MDM Agents Version 1.0 (MOD_MDM_AGENT_V1.0) Date 2019-04-25 Agent Location https://www.niap-ccevs.org/Profile/Info.cfm?PPID=441&id=441 Apple Platform Security Date 2022-05 AP_SEC Location https://help.apple.com/pdf/security/en_US/apple-platform-security-gu ide.pdf About Apple File System Date 2022 APFS_DEV_DOC Location https://developer.apple.com/documentation/foundation/file_system/ab out_apple_file_system File system formats available in Disk Utility on Mac Date 2022 APFS_DOC Location https://support.apple.com/guide/disk-utility/dsku19ed921c/21.0/mac/1 2.0 PP-Module: collaborative PP-Module for Biometric enrolment and verification - for unlocking the device - [BIOPP-Module] Version 1.1 (MOD_CPP_BIO_V1.1) Date 2022-09-12 BIO Location https://www.niap-ccevs.org/Profile/Info.cfm?PPID=476&id=476 Pair a third-party Bluetooth accessory with your iPhone, iPad,or iPod touch Date 2021-11-19 BLUETOOTH_HELP Location https://support.apple.com/en-us/HT204091 PP-Module for Bluetooth Version 1.0 (MOD_BT_V1.0) Date 2021-04-15 BT Location https://www.niap-ccevs.org/Profile/Info.cfm?PPID=425&id=425 Bluetooth Specifications Author(s) Bluetooth SIG, Inc. BT_SPEC Date 2021-07-13 Version: 1.1 Classification: Public Page 174 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Location https://www.bluetooth.com/specifications/ Common Criteria for Information Technology Security Evaluation Version 3.1R5 Date April 2017 Location http://www.commoncriteriaportal.org/files/ccfiles/CCPART1V3.1R5.pdf Location http://www.commoncriteriaportal.org/files/ccfiles/CCPART2V3.1R5.pdf CC Location http://www.commoncriteriaportal.org/files/ccfiles/CCPART3V3.1R5.pdf Apple iOS 16: iPhones and Apple iPadOS 16: iPads Common Criteria Configuration Guide Date 2023 CCGUIDE Location https://www.niap-ccevs.org/MMO/Product/st_vidnnnnn-agd.pdf Identity Pinning: How to configure server certificates for your app Date 2021-01-14 CertPinning Location https://developer.apple.com/news/?id=g9ejcf8y Certificate, Key, and Trust Services Date 2022 CKTSREF Location https://developer.apple.com/documentation/security/certificate_key_an d_trust_services Set up content caching on Mac Date 2022 CONTENT-CACHING Location https://support.apple.com/guide/mac-help/set-up-content-caching-on -mac-mchl3b6c3720/12.0/mac/12.0 Apple Platform Deployment Date 2022-06 DeployRef Location https://support.apple.com/guide/deployment/welcome/web Device Management Date 2022 DEV_MAN Location https://developer.apple.com/documentation/devicemanagement Security Requirements for Cryptographic Modules Date 2019-03-22 FIPS140-3 Location https://csrc.nist.gov/pubs/fips/140-3/final Secure Hash Standard (SHS) Date 2015-08-04 FIPS180-4 Location https://csrc.nist.gov/pubs/fips/180-4/upd1/final Digital Signature Standard (DSS) Date 2013-07-19 FIPS186-4 Location https://csrc.nist.gov/pubs/fips/186-4/final Advanced Encryption Standard (AES) FIPS197 Date 2023-05-09 Version: 1.1 Classification: Public Page 175 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Location https://csrc.nist.gov/pubs/fips/197/final The Keyed-Hash Message Authentication Code (HMAC) Date 2008-07-16 FIPS198-1 Location https://csrc.nist.gov/pubs/fips/198-1/final iPad User Guide iOS 16 (latest) Version iPadOS 16 Date 2022 iPad_UG Location https://support.apple.com/guide/ipad/welcome/ipados Keychain Services (Programming Guide) Date 2022 KEYCHAINPG Location https://developer.apple.com/documentation/security/keychain_services Logging Date 2022 LOGGING Location https://developer.apple.com/documentation/os/logging?language=objc Change or remove the payment cards that you use with Apple Pay Date 2021-12-16 MANAGE_CARDS Location https://support.apple.com/en-us/HT205583 Base-PP: Protection Profile for Mobile Device Fundamentals Version 3.3 (PP_MDF_V3.3) Date 2022-09-12 MDF Location https://www.niap-ccevs.org/Profile/Info.cfm?PPID=468&id=468 Use a passcode with your iPhone, iPad or iPod touch Date 2022-03-28 PASSCODE-Help Location https://support.apple.com/en-us/HT204060 Set up Apple Pay Date 2022-03-18 PAY_SETUP Location https://support.apple.com/en-us/HT204506 Profile Manager User Guide for macOS Monterey Date 2022 PM_Help Location https://support.apple.com/guide/profile-manager/welcome/mac PP-Configuration for Mobile Device Fundamentals, Biometric enrollment and verification – for unlocking the device, Bluetooth, MDM Agents, Virtual Private Network (VPN) Clients, and WLAN Clients Version 1.0 (CFG_MDF-BIO-BT-MDMA-VPNC-WLANC_V1.0) Date 2022-10-11 PP-Config Location https://www.niap-ccevs.org/MMO/PP/CFG_MDF-BIO-BT-MDMA-VPN C-WLANC_V1.0.pdf Profiles and Logs Date 2022 PROFS_LOGS Location https://developer.apple.com/bug-reporting/profiles-and-logs/?platform =ios Version: 1.1 Classification: Public Page 176 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Advanced Encryption Standard (AES) Key Wrap Algorithm Author(s) J. Schaad, R. Housley Date 2002-09-01 RFC3394 Location http://www.ietf.org/rfc/rfc3394.txt More Modular Exponential (MODP) Diffie-Hellman groups for Internet Key Exchange (IKE) Author(s) T. Kivinen, M. Kojo Date 2003-05-01 RFC3526 Location http://www.ietf.org/rfc/rfc3526.txt Security Architecture for the Internet Protocol Author(s) S. Kent, K. Seo Date 2005-12-01 RFC4301 Location http://www.ietf.org/rfc/rfc4301.txt Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile Author(s) D. Cooper, S. Santesson, S. Farrell, S. Boeyen, R. Housley, W. Polk Date 2008-05-01 RFC5280 Location http://www.ietf.org/rfc/rfc5280.txt Transport Layer Security (TLS) Renegotiation Indication Extension Author(s) E. Rescorla, M. Ray, S. Dispensa, N. Oskov Date 2010-02-01 RFC5746 Location http://www.ietf.org/rfc/rfc5746.txt Internet Key Exchange Protocol Version 2 (IKEv2) Author(s) C. Kaufman, P. Hoffman, Y. Nir, P. Eronen Date 2010-09-01 RFC5996 Location http://www.ietf.org/rfc/rfc5996.txt Elliptic Curves for Security Author(s) A. Langley, M. Hamburg, S. Turner Date 2016-01-01 RFC7748 Location http://www.ietf.org/rfc/rfc7748.txt Simple Certificate Enrolment Protocol Author(s) P. Gutmann Date 2020-09-01 RFC8894 Location http://www.ietf.org/rfc/rfc8894.txt Recommendation for Password-Based Key Derivation: Part 1: Storage Applications Date 2010-12-22 SP800-132 Location https://csrc.nist.gov/pubs/sp/800/132/final Recommendation for Block Cipher Modes of Operation: Methods and Techniques Date 2001-12-01 SP800-38A Location https://csrc.nist.gov/pubs/sp/800/38/a/final Version: 1.1 Classification: Public Page 177 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Recommendation for Block Cipher Modes of Operation: the CCM Mode for Authentication and Confidentiality Date 2007-07-20 SP800-38C Location https://csrc.nist.gov/pubs/sp/800/38/c/upd1/final Recommendation for Block Cipher Modes of Operation: Galois/Counter Mode (GCM) and GMAC Date 2007-11-28 SP800-38D Location https://csrc.nist.gov/pubs/sp/800/38/d/final Recommendation for Block Cipher Modes of Operation: the XTS-AES Mode for Confidentiality on Storage Devices Date 2010-01-18 SP800-38E Location https://csrc.nist.gov/pubs/sp/800/38/e/final Recommendation for Block Cipher Modes of Operation: Methods for Key Wrapping Date 2012-12-13 SP800-38F Location https://csrc.nist.gov/pubs/sp/800/38/f/final Recommendation for Pair-Wise Key-Establishment Schemes Using Discrete Logarithm Cryptography Date 2018-04-16 SP800-56A-Rev3 Location https://csrc.nist.gov/pubs/sp/800/56/a/r3/final Recommendation for Pair-Wise Key Establishment Schemes Using Integer Factorization Cryptography Date 2014-09 SP800-56B-Rev1 Location https://csrc.nist.gov/pubs/sp/800/56/b/r1/final Recommendation for Key-Derivation Methods in Key-Establishment Schemes Date 2020-08-18 SP800-56C-Rev2 Location https://csrc.nist.gov/pubs/sp/800/56/c/r2/final Recommendation for Random Number Generation Using Deterministic Random Bit Generators Date 2015-06-24 SP800-90A-Rev1 Location https://csrc.nist.gov/pubs/sp/800/90/a/r1/final Functional Package for Transport Layer Security (TLS) Version 1.1 (PKG_TLS_V1.1) Date 2019-03-01 TLSPKG Location https://www.niap-ccevs.org/Profile/Info.cfm?PPID=439&id=439 List of available trusted root certificates in iOS 16, iPadOS 16, macOS 13, tvOS 16, and watchOS 9 Date 2021-09-27 TRUST_STORE Location https://support.apple.com/en-us/HT212773 PP-Module for Virtual Private Network (VPN) Clients VPNC Version 2.4 (MOD_VPNC_V2.4) Version: 1.1 Classification: Public Page 178 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Date 2022-03-31 Location https://www.niap-ccevs.org/Profile/Info.cfm?PPID=467&id=467 PP-Module for WLAN Clients Version 1.0 (MOD_WLANC_V1.0) Date 2022-03-31 WLANC Location https://www.niap-ccevs.org/Profile/Info.cfm?PPID=463&id=463 Version: 1.1 Classification: Public Page 179 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 A Appendixes A.1 Devices Covered by this Evaluation This appendix lists the devices that are covered by this evaluation and provides the technical characteristics of each device including the instruction set architecture a.k.a. microarchitecture. The following shorthand expressions are used in this section. BAF Biometric Authentication Factor Type BT Bluetooth (version) (2400 MHz to 2483.5 MHz) Core Wi-Fi/Bluetooth chip core ISA Instruction Set Architecture SoC System on a Chip Table 31: SoC to ISA mappings SoC ISA A9 ARMv8.1-A A10 Fusion A10X Fusion ARMv8.1-A A12 Bionic A12X Bionic A12Z Bionic ARMv8.3-A A13 Bionic ARMv8.4-A A14 Bionic ARMv8.5-A A15 Bionic ARMv8.6-A M1 ARMv8.5-A M2 ARMv8.6-A Table 32: iPad: A9 (ARMv8.1-A) models Device Info Model No. Cellular A1822 Wi-Fi only iPad (5th gen) BAF: Touch ID (Gen.1) BT: 4.2 SoC: A9 Wi-Fi: 802.11 /a/b/g/n/ac A1823 UMTS/HSPA/HSPA+/ DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) CDMA EV-DO Rev. A and Rev. B (800, 1900 MHz) LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 38, 39, 40, 41) Version: 1.1 Classification: Public Page 180 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Device Info Model No. Cellular Core: 4355 Table 33: iPad: A10 Fusion (ARMv8.1-A) models Device Info Model No. Cellular A1893 Wi-Fi only iPad (6th gen) BAF: Touch ID (Gen.1) BT: 4.2 SoC: A10 Fusion Wi-Fi: 802.11 /a/b/g/n/ac Core: 4355 A1954 UMTS/HSPA/HSPA+/ DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) CDMA EV-DO Rev. A (800, 1900 MHz) LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41) A2197 Wi-Fi only A2198 (Hong Kong) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 66, 71) A2199 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 66, 71) iPad (7th gen) BAF: Touch ID (Gen.1) BT: 4.2 SoC: A10 Fusion Wi-Fi: 802.11 /a/b/g/n/ac Core: 4355 A2200 Wi-Fi only Table 34: iPad: A10X Fusion (ARMv8.1-A) models Device Info Model No. Cellular A1670 Wi-Fi only A1671 UMTS/HSPA/ HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) CDMA EV-DO Rev. A and Rev. B (800, 1900 MHz) LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 17, 18, 19, 20, 21, 25, 26, 27, 28, 29, 30, 38, 39, 40, 41) iPad Pro 12.9-inch (2nd gen) BAF: Touch ID (Gen.3) BT: 4.2 SoC: A10X Fusion Wi-Fi: 802.11 /a/b/g/n/ac Core: 4355 A1821 (China) UMTS/HSPA/ HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) CDMA EV-DO Rev. A (800, 1900 MHz) Version: 1.1 Classification: Public Page 181 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Device Info Model No. Cellular LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 17, 18, 19, 20, 21, 25, 26, 27, 28, 29, 30, 38, 39, 40, 41) A1701 Wi-Fi only A1709 UMTS/HSPA/ HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) CDMA EV-DO Rev. A and Rev. B (800, 1900 MHz) LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 17, 18, 19, 20, 21, 25, 26, 27, 28, 29, 30, 38, 39, 40, 41) iPad Pro 10.5-inch BAF: Touch ID (Gen.3) BT: 4.2 SoC: A10X Fusion Wi-Fi: 802.11 /a/b/g/n/ac Core: 4355 A1852 (China) UMTS/HSPA/ HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) CDMA EV-DO Rev. A (800, 1900 MHz) LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 17, 18, 19, 20, 21, 25, 26, 27, 28, 29, 30, 38, 39, 40, 41) Table 35: iPad: A12 Bionic (ARMv8.3-A) models Device Info Model No. Cellular A2124 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40,41, 46, 66) A2125 (China) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 42, 46, 66) A2126 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 46, 66, 71) iPad mini (5th gen) BAF: Touch ID (Gen.3) BT: 5.0 SoC: A12 Bionic Wi-Fi: 802.11 /a/b/g/n/ac Core: 4377 A2133 Wi-Fi only A2123 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 46, 66) A2152 Wi-Fi only iPad Air 10.5-inch (3rd gen) BAF: Touch ID (Gen.3) BT: 5.0 SoC: A12 Bionic Wi-Fi: 802.11 /a/b/g/n/ac A2153 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) Version: 1.1 Classification: Public Page 182 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Device Info Model No. Cellular GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 46, 66, 71) Core: 4377 A2154 (China) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 42, 46, 66) A2270 Wi-Fi only A2428 UMTS/HSPA/HSPA+ /DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 66, 71) A2429 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) and 4G LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, and 66) iPad (8th gen) BAF: Touch ID (Gen.1) BT: 4.2 SoC: A12 Bionic Wi-Fi: 802.11 /a/b/g/n/ac Core: 4355 A2430 (China) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) and 4G LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, and 66) Table 36: iPad: A12X Bionic (ARMv8.3-A) models Device Info Model No. Cellular A1934 (US/CA) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) LTE Advanced (Model A1934 and A1895: bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 42, 46, 66) A1979 (China) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) A1980 Wi-Fi only iPad Pro 11-inch BAF: Face ID (Gen.1) BT: 5.0 SoC: A12X Bionic Wi-Fi: 802.11 /a/b/g/n/ac Core: 4377 A2013 (US/CA) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Models A2013 and A2014: bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 46, 66, 71) A1876 Wi-Fi only iPad Pro 12.9-inch (3rd gen) A1895 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) Version: 1.1 Classification: Public Page 183 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Device Info Model No. Cellular GSM/EDGE (850, 900, 1800, 1900 MHz) LTE Advanced (Model A1934 and A1895: bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 42, 46, 66) A1983 (China) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) BAF: Face ID (Gen.1) BT: 5.0 SoC: A12X Bionic Wi-Fi: 802.11 /a/b/g/n/ac Core: 4377 A2014 (US/CA) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Models A2013 and A2014: bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 46, 66, 71) Table 37: iPad: A12Z Bionic (ARMv8.3-A) models Device Info Model No. Cellular A2068 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Models A2068 and A2069: bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 34, 38, 39, 40, 41, 42, 46, 48, 66, 71) A2228 Wi-Fi only A2230 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Models A2068 and A2069: bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 34, 38, 39, 40, 41, 42, 46, 48, 66, 71) iPad Pro 11-inch (2nd gen) BAF: Face ID (Gen.1) BT: 5.0 SoC: A12Z Bionic Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4378 A2231 (China) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) A2069 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Models A2068 and A2069: bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 34, 38, 39, 40, 41, 42, 46, 48, 66, 71) A2229 Wi-Fi only A2232 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Models A2068 and A2069: bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 34, 38, 39, 40, 41, 42, 46, 48, 66, 71) iPad Pro 12.9-inch (4th gen) BAF: Face ID (Gen.1) BT: 5.0 SoC: A12Z Bionic Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4378 A2233 (China) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Version: 1.1 Classification: Public Page 184 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Table 38: iPad: A13 Bionic (ARMv8.4-A) models Device Info Model No. Cellular A2602 Wi-Fi only A2603 (US/CA) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 66, and 71) A2604 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, and 66) iPad (9th gen) BAF: Touch ID (Gen.1) BT: 4.2 SoC: A13 Bionic Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4355 A2605 UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, and 66) Table 39: iPad: A14 Bionic (ARMv8.5-A) models Device Info Model No. Cellular A2072 (Global) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE, (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 66) A2316 Wi-Fi only A2324 (US/CA) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Gigabit-class LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 29, 30, 34, 38, 39, 40, 41, 46, 48, 66, 71) iPad Air (4th gen) BAF: Touch ID (Gen.4) BT: 5.0 SoC: A14 Bionic Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4387 A2325 (China) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) 4G LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 46, 48, 66) A2696 Wi-Fi only iPad (10th gen) BAF: Touch ID (Gen.4) BT: 5.2 SoC: A14 Bionic Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4387 A2757 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n29, n30, n38, n40, n41, n48, n66, n70, n71, n77, n78, n79)5 FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1.700/2.100, 1.900, 2.100 MHz) Version: 1.1 Classification: Public Page 185 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Table 40: iPad: A15 Bionic (ARMv8.6-A) models Device Info Model No. Cellular A2567 Wi-Fi only A2568 (Global) 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) iPad mini (6th gen) BAF: Touch ID (Gen.4) BT: 5.0 SoC: A15 Bionic Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4387 A2569 (China) 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) Table 41: iPad: M1 (ARMv8.5-A) models Device Info Model No. Cellular A2301 (US/CA) 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n71, n77, n78, n79) 5G NR mmWave (Bands n260, n261) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) A2377 Wi-Fi only iPad Pro 11-inch (3rd gen) BAF: Face ID (Gen.1) BT: 5.0 SoC: M1 Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4387 A2460 (China) 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) iPad Pro 12.9-inch (5th gen) A2378 Wi-Fi only Version: 1.1 Classification: Public Page 186 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Device Info Model No. Cellular A2379 Wi-Fi only A2461 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n71, n77, n78, n79) 5G NR mmWave (Bands n260, n261) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) BAF: Face ID (Gen.1) BT: 5.0 SoC: M1 Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4387 A2462 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) GSM/EDGE (850, 900, 1800, 1900 MHz) A2588 Wi-Fi only A2589 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n29, n30, n38, n40, n41, n48, n66, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) iPad Air (5th gen) BAF: Touch ID (Gen.4) BT: 5.0 SoC: M1 Wi-Fi: Wi-Fi 6 (802.11ax) Core: 4387 A2591 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n29, n30, n38, n40, n41, n48, n66, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) Table 42: iPad: M2 (ARMv8.6-A) models Device Info Model No. Cellular A2435 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14,n20, n25, n28, n29, n30, n38, n40, n41, n48, n66, n71, n77, n78, n79) 5G NR mmWave (Bands n258,n260,n261) iPad Pro 11-inch (4th gen) BAF: Face ID (Gen.1) BT: 5.3 A2759 Wi-Fi only Version: 1.1 Classification: Public Page 187 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Device Info Model No. Cellular A2761 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n29, n30, n38, n40, n41, n48, n66, n70, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1.700/2.100, 1.900, 2.100 MHz) SoC: M2 Wi-Fi: Wi-Fi 6E (802.11ax) Core: 4388 A2762 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n29, n30, n38, n40, n41, n48, n66, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) A2436 Wi-Fi only A2437 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n29, n30, n38, n40, n41, n48, n66, n70, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 11, 12, 13, 14, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC-HSDPA (850, 900, 1.700/2.100, 1.900, 2.100 MHz) iPad Pro 12.9-inch (6th gen) BAF: Face ID (Gen.1) BT: 5.3 SoC: M2 Wi-Fi: Wi-Fi 6E (802.11ax) Core: 4388 A2766 5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n29, n30, n38, n40, n41, n48, n66, n70, n71, n77, n78, n79) FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 66, 71) TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48) UMTS/HSPA/HSPA+/DC HSDPA (850, 900, 1700/2100, 1900, 2100 MHz) Version: 1.1 Classification: Public Page 188 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 A.2 Wi-Fi Alliance Certificates The following table lists the Wi-Fi Alliance certificates for the devices covered by this evaluation. Table 43: iPad: Wi-Fi Alliance certificates SoC Device Name Model No. Wi-Fi Alliance A1822 A9 iPad 9.7-inch (5th gen) A1823 WFA70147 / WFA70146 A1893 iPad 9.7-inch (6th gen) A1954 WFA76394 / WFA76387 A2197 A2198 A2199 A10 Fusion iPad 10.2-inch (7th gen) A2200 WFA90120 / WFA90121 A1670 A1671 iPad Pro 12.9-inch (2nd gen) A1821 WFA70412 / WFA70651 A1701 A1709 A10X Fusion iPad Pro 10.5-inch A1852 WFA70413 / WFA70652 A2125 A2133 A2124 iPad mini 7.9-inch (5th gen) A2126 WFA81121 / WFA81123 A2152 A2154 A2123 iPad Air 10.5-inch (3rd gen) A2153 WFA81122 / WFA81124 A2270 A2428 A2429 A12 Bionic iPad 10.2-inch (8th gen) A2430 WFA101464 / WFA101465 A1934 A1979 A12X Bionic iPad Pro 11-inch A1980 WFA78760 Version: 1.1 Classification: Public Page 189 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SoC Device Name Model No. Wi-Fi Alliance A2013 A2014 A1876 A1895 iPad Pro 12.9-inch (3rd gen) A1983 WFA77796 A2068 A2228 A2230 iPad Pro 11-inch (2nd gen) A2231 WFA96501 / WFA96558 A2069 A2229 A2232 A12Z Bionic iPad Pro 12.9-inch (4th gen) A2233 WFA94633 / WFA94634 A2602 WFA113796 A2603 WFA113795 A2604 WFA113795 A13 Bionic iPad (9th gen) A2605 WFA113796 A2316 A2324 A2072 iPad Air (4th gen) A2325 WFA99939 / WFA99940 A2696 WFA120871 A14 Bionic iPad (10th gen) A2757 WFA120040 A2567 WFA113722 A2568 WFA112068 A15 Bionic iPad mini (6th gen) A2569 WFA112068 A2301 A2377 iPad Pro 11-inch (3rd gen) A2460 WFA110479 A2378 A2379 A2461 M1 iPad Pro 12.9-inch (5th gen) A2462 WFA110951 Version: 1.1 Classification: Public Page 190 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SoC Device Name Model No. Wi-Fi Alliance A2588 A2589 iPad Air (5th gen) A2591 WFA118451 A2435 WFA120037 A2759 WFA120872 A2761 WFA120037 iPad Pro 11-inch (4th gen) A2762 WFA120872 A2436 WFA120875 A2437 WFA120874 M2 iPad Pro 12.9-inch (6th gen) A2766 WFA120875 A.3 SFR to CAVP certificate mappings This appendix maps the SFRs to the CAVP certificates. The CAVP certificates contain several different SoCs in the operational environment (OE). The SoCs used by the TOE are specified in Table 31. CAVP Module Implementation Names Below are the CAVP module (Mod) implementation names of the implementations used in Table 44. USR The user space software module implementation names for v13.0 are: 1. Apple corecrypto Module [Apple ARM, User, Software, SL1] (asm_arm) 2. Apple corecrypto Module [Apple ARM, User, Software, SL1] (c_asm) 3. Apple corecrypto Module [Apple ARM, User, Software, SL1] (c_ltc) 4. Apple corecrypto Module [Apple ARM, User, Software, SL1] (vng_asm) 5. Apple corecrypto Module [Apple ARM, User, Software, SL1] (vng_ltc) 6. Apple corecrypto Module [Apple ARM, User, Software, SL1] (vng_neon) KRN The kernel space software module names for v13.0 are: 1. Apple corecrypto Module [Apple ARM, Kernel, Software, SL1] (asm_arm) 2. Apple corecrypto Module [Apple ARM, Kernel, Software, SL1] (c_asm) 3. Apple corecrypto Module [Apple ARM, Kernel, Software, SL1] (c_ltc) 4. Apple corecrypto Module [Apple ARM, Kernel, Software, SL1] (vng_asm) 5. Apple corecrypto Module [Apple ARM, Kernel, Software, SL1] (vng_ltc) 6. Apple corecrypto Module [Apple ARM, Kernel, Software, SL1] (vng_neon) SKS-FW The secure key store (SKS) firmware module implementation names for v13.0 are: 1. Apple corecrypto Module [Apple ARM, Secure Key Store, Hardware, SL2] (asm_arm) Version: 1.1 Classification: Public Page 191 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 2. Apple corecrypto Module [Apple ARM, Secure Key Store, Hardware, SL2] (c_asm) 3. Apple corecrypto Module [Apple ARM, Secure Key Store, Hardware, SL2] (c_ltc) 4. Apple corecrypto Module [Apple ARM, Secure Key Store, Hardware, SL2] (vng_asm) 5. Apple corecrypto Module [Apple ARM, Secure Key Store, Hardware, SL2] (vng_ltc) 6. Apple corecrypto Module [Apple ARM, Secure Key Store, Hardware, SL2] (vng_neon) SKS-HW The secure key store (SKS) hardware module implementation names for v2.0 are: 1. A9: ● Apple Secure Enclave Processor Hardware DRBG (Apple A9) ● Apple Secure Enclave Processor Hardware SKG (A9) 2. A10 Fusion: ● Apple Secure Enclave Processor Hardware DRBG (Apple A10) ● Apple Secure Enclave Processor Hardware SKG (A10 Fusion) 3. A10X Fusion: ● Apple Secure Enclave Processor Hardware DRBG (Apple A10X) ● Apple Secure Enclave Processor Hardware SKG (A10X Fusion) 4. A12 Bionic: ● Apple Secure Enclave Processor Hardware DRBG (A12 Bionic) ● Apple Secure Enclave Processor Hardware SKG (A12 Bionic) 5. A12X Bionic: ● Apple Secure Enclave Processor Hardware DRBG (A12X Bionic) ● Apple Secure Enclave Processor Hardware SKG (A12X Bionic) 6. A12Z Bionic: ● Apple Secure Key Store CoreCrypto Module Hardware (trng) ● Apple Secure Key Store CoreCrypto Module Hardware (skg) 7. A13 Bionic: ● Apple Secure Key Store CoreCrypto Module Hardware (trng) ● Apple Secure Key Store CoreCrypto Module Hardware (skg) 8. A14 Bionic: ● Apple corecrypto Module [Apple silicon, Secure Key Store, Hardware] (trng) ● Apple corecrypto Module [Apple silicon, Secure Key Store, Hardware] (skg) 9. A15 Bionic: ● Apple corecrypto Module [Apple ARM, Secure Key Store, Hardware, SL2] (trng) ● Apple corecrypto Module [Apple ARM, Secure Key Store, Hardware, SL2] (skg) 10. M1: ● Apple corecrypto Module [Apple silicon, Secure Key Store, Hardware] (trng) ● Apple corecrypto Module [Apple silicon, Secure Key Store, Hardware] (skg) 11. M2: ● Apple corecrypto Module [Apple silicon, Secure Key Store, Hardware, SL2] (trng) ● Apple corecrypto Module [Apple silicon, Secure Key Store, Hardware, SL2] (skg) Version: 1.1 Classification: Public Page 192 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 BC The Broadcom core hardware module implementation names are: 1. 4350: ● Cryptographic Hardware Module 2. 4355: ● Cryptographic Hardware Module 3. 4377: ● Cryptographic Hardware Module 4. 4378 Aux (2.4 GHz): ● Crypto Hardware Module aes_core_gcm.vhd 5. 4378 Main (5 GHz): ● Crypto Hardware Module aes_core_gcm_simult_enc_mic.vhd 6. 4387 Aux (2.4 GHz): ● Crypto Hardware Module aes_core_gcm.vhd 7. 4387 Main (5 GHz): ● Crypto Hardware Module aes_core_gcm_simult_enc_mic.vhd 8. 4388 Aux (2.4 GHz): ● Crypto Hardware Module aes_core_gcm.vhd 9. 4388 Main (5 GHz): ● Crypto Hardware Module aes_core_gcm_simult_5_cycle.vhd CAVP Operational Environments (OEs) The CAVP OEs for USR, KRN, and SKS-FW are: 1. iPadOS 16 on Apple A Series (ARMv8.1-A) A9 2. iPadOS 16 on Apple A Series (ARMv8.1-A) A10 Fusion 3. iPadOS 16 on Apple A Series (ARMv8.1-A) A10X Fusion 4. iPadOS 16 on Apple A Series (ARMv8.3-A) A12 Bionic 5. iPadOS 16 on Apple A Series (ARMv8.3-A) A12X Bionic 6. iPadOS 16 on Apple A Series (ARMv8.3-A) A12Z Bionic 7. iPadOS 16 on Apple A Series (ARMv8.4-A) A13 Bionic 8. iPadOS 16 on Apple A Series (ARMv8.5-A) A14 Bionic 9. iPadOS 16 on Apple A Series (ARMv8.6-A) A15 Bionic 10. iPadOS 16 on Apple M Series (ARMv8.5-A) M1 11. iPadOS 16 on Apple M Series (ARMv8.6-A) M2 The CAVP OEs for SKS-HW are: 1. A9: ● Apple Secure Enclave Processor Hardware DRBG (Apple A9) ● Apple Secure Enclave Processor Hardware SKG (A9) 2. A10 Fusion: ● Apple Secure Enclave Processor Hardware DRBG (A10 Fusion) Version: 1.1 Classification: Public Page 193 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● Apple Secure Enclave Processor Hardware SKG (A10 Fusion) 3. A10X Fusion: ● Apple Secure Enclave Processor Hardware DRBG (A10X Fusion) ● Apple Secure Enclave Processor Hardware SKG (A10X Fusion) 4. A12 Bionic: ● Apple Secure Enclave Processor Hardware DRBG (A12 Bionic) ● Apple Secure Enclave Processor Hardware SKG (A12 Bionic) 5. A12X Bionic: ● Apple Secure Enclave Processor Hardware DRBG (A12X Bionic) ● Apple Secure Enclave Processor Hardware SKG (A12X Bionic) 6. A12Z Bionic: ● Apple A Series A12Z Bionic 7. A13 Bionic: ● Apple A Series A13 Bionic 8. A14 Bionic: ● Apple A Series A14 Bionic 9. A15 Bionic: ● Apple A Series A15 Bionic 10. M1: ● Apple M Series M1 11. M2: ● Apple M Series (ARMv8.6-A) M2 The CAVP OEs for BC are: 1. 4350: ● ModelSim SE 6.4 2. 4355: ● Cryptographic Hardware Module 3. 4377: ● Cryptographic Hardware Module 4. 4378 Aux (2.4 GHz): ● Crypto Hardware Module aes_core_gcm.vhd 5. 4378 (5 Ghz): ● Crypto Hardware Module aes_core_gcm_simult_enc_mic.vhd 6. 4387 Aux (2.4 GHz): ● Crypto Hardware Module aes_core_gcm.vhd 7. 4387 Aux (5 GHz): ● Crypto Hardware Module aes_core_gcm_simult_enc_mic.vhd 8. 4388 Aux (2.4 GHz): ● Crypto Hardware Module aes_core_gcm.vhd 9. 4388 Aux (5 GHz): Version: 1.1 Classification: Public Page 194 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 ● Mentor Questa Sim-64 2021.2_1 CAVP Mapping Table Table 44: SFRs to CAVP certificates for iPads SFR Algorithm Modes / Other Mod Implementation CAVP USR vng_ltc A3428 KRN vng_ltc A3686 ECDSA KeyGen and KeyVer [FIPS186-4]☝ P-256, P-384 SKS-FW vng_ltc A4109 FCS_CKM.1 Safe Primes KeyGen [SP800-56A-Rev3]☝ MODP-2048, MODP-3072 USR c_ltc A3426 FCS_CKM.1/VPN ECDSA KeyGen and KeyVer [FIPS186-4]☝ P-256, P-384 USR vng_ltc A3428 USR c_ltc A3426 ECC Key Establishment (KAS-ECC-SSC Sp800-56Ar3) [SP800-56A-Rev3]☝ P-256, P-384 SKS-FW c_ltc A4106 FFC Key Establishment (KAS-FFC-SSC Sp800-56Ar3) [SP800-56A-Rev3]☝ MODP-2048, MODP-3072 USR c_ltc A3426 FCS_CKM.2/ UNLOCKED RSA Key Establishment [SP800-56B-Rev1]☝ 2048, 3072, 4096 USR c_ltc Vendor Affirmation as per PL#5 Add2 v2.0 USR asm_arm A3423 KRN asm_arm A3682 CBC 128-bit, 256-bit encrypt, decrypt [SP800-38A]☝ (CBC) SKS-FW asm_arm A4103 A9 (skg) C314 A10 Fusion (skg) C317 A10X Fusion (skg) C318 A12 Bionic (skg) C320 A12X Bionic (skg) C322 FCS_COP.1/ ENCRYPT AES [FIPS197]☝ CBC 128-bit, 256-bit encrypt only [SP800-38A]☝ (CBC) SKS-HW A12Z Bionic (skg) A510 Version: 1.1 Classification: Public Page 195 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR Algorithm Modes / Other Mod Implementation CAVP A13 Bionic (skg) A510 A14 Bionic (skg) A1469 A15 Bionic (skg) A2863 M1 (skg) A1469 M2 (skg) A3496 USR vng_asm A3427 KRN vng_asm A3685 SKS-FW vng_asm A4108 4350 AES 4035 4355 AES 3678 4377 AES 4791 4378 Aux AES 5926 4378 Main AES 5927 4387 Aux AES 5926 4387 Main AES 5927 4388 Aux AES 5926 CCM 128-bit [SP800-38C]☝ (CCM) BC 4388 Main A1932 USR vng_asm A3427 KRN vng_asm A3685 SKS-FW vng_asm A4108 4378 Aux AES 5952 4378 Main AES 5953 4387 Aux AES 5952 4387 Main AES 5953 4388 Aux AES 5952 CCM 256-bit [SP800-38C]☝ (CCM) BC 4388 Main A1932 USR vng_asm A3427 KRN vng_asm A3685 SKS-FW vng_asm A4108 4377 AES 4791 4378 Aux AES 5926 4378 Main AES 5927 GCM 128-bit encrypt, decrypt [SP800-38D]☝ (GCM) BC 4387 Aux AES 5926 Version: 1.1 Classification: Public Page 196 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR Algorithm Modes / Other Mod Implementation CAVP 4387 Main AES 5927 4388 Aux AES 5926 4388 Main A1932 USR vng_asm A3427 KRN vng_asm A3685 SKS-FW vng_asm A4108 4378 Aux AES 5926 4378 Main AES 5927 4387 Aux AES 5926 4387 Main AES 5927 4388 Aux AES 5926 GCM 256-bit encrypt, decrypt [SP800-38D]☝ (GCM) BC 4388 Main A1932 USR c_asm A3424 KRN c_asm A3683 KW 128-bit, 256-bit encrypt, decrypt [SP800-38F]☝ (KW) SKS-FW c_asm A4104 USR asm_arm A3423 KRN asm_arm A3682 XTS 128-bit, 256-bit encrypt, decrypt [SP800-38E]☝ (XTS) SKS-FW asm_arm A4103 USR vng_neon A3429 KRN vng_neon A3687 SHA2-256 SKS-FW vng_neon A4110 USR vng_ltc A3428 KRN vng_ltc A3686 FCS_COP.1/HASH SHS Byte-oriented mode [FIPS180-4]☝ SHA-1, SHA2-384, SHA2-512 SKS-FW vng_ltc A4109 USR vng_ltc A3428 RSA SigGen PKCS 1.5 and PKCSPSS [FIPS186-4]☝ Modulo: 2048, 3072, 4096 using SHA2-256, SHA2-384, SHA2-512 KRN vng_ltc A3686 USR vng_ltc A3428 FCS_COP.1/SIGN RSA SigVer PKCS 1.5 and PKCSPSS Modulo: 2048, 3072, 4096 using KRN vng_ltc A3686 Version: 1.1 Classification: Public Page 197 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 SFR Algorithm Modes / Other Mod Implementation CAVP [FIPS186-4]☝ SHA-1, SHA2-256, SHA2-384, SHA2-512 USR vng_ltc A3428 KRN vng_ltc A3686 ECDSA SigGen [FIPS186-4]☝ P-256, P-384, P-521 using SHA2-256, SHA2-384, SHA2-512 SKS-FW vng_ltc A4109 USR vng_ltc A3428 KRN vng_ltc A3686 ECDSA SigVer [FIPS186-4]☝ P-256, P-384, P-521 using SHA-1, SHA2-256, SHA2-384, SHA2-512 SKS-FW vng_ltc A4109 USR vng_neon A3429 KRN vng_neon A3687 HMAC-SHA2-256 SKS-FW vng_neon A4110 USR vng_ltc A3428 KRN vng_ltc A3686 FCS_COP.1/ KEYHMAC HMAC Byte-oriented mode [FIPS198-1]☝ HMAC-SHA-1, HMAC-SHA2-384, HMAC-SHA2-512 SKS-FW vng_ltc A4109 A9 DRBG 2025 A10 Fusion DRBG 2023 A10X Fusion DRBG 2024 A12 Bionic C323 A12X Bionic C324 A12Z Bionic (trng) A501 A13 Bionic (trng) A501 A14 Bionic (trng) A1362 A15 Bionic (trng) A2864 M1 (trng) A1362 FCS_RBG_EXT.1/HW CTR_DRBG(AES) [SP800-90A-Rev1]☝ AES-256 SKS-HW M2 (trng) A3490 USR vng_asm A3427 FCS_RBG_EXT.1/SW CTR_DRBG(AES) [SP800-90A-Rev1]☝ AES-256 KRN vng_asm A3685 CAVP Mapping of Broadcom Cores Table 45 maps iPads to Broadcom cores and Broadcom CAVP certificates. Version: 1.1 Classification: Public Page 198 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 Table 45: Broadcom core supported algorithms and CAVP certificates for iPads iPad Broadcom Core # (Version) Supported Algorithms CAVP iPad 9.7-inch (5th gen) (A9) iPad 9.7-inch (6th gen) (A10 Fusion) iPad 10.2-inch (7th gen) (A10 Fusion) iPad Pro 12.9 (2nd gen) (A10X Fusion) iPad Pro 10.5 (A10X Fusion) iPad 10.2-inch (8th gen) (A12 Bionic) iPad 10.2-inch (9th gen) (A13 Bionic) 4355 (aes_core.vhd rev 10) AES-CCM-128 AES 3678 iPad mini (5th gen) (A12 Bionic) iPad Air 10.5-inch (3rd gen) (A12 Bionic) iPad Pro 11-inch (A12X Bionic) iPad Pro 12.9-inch (3rd gen) (A12X Bionic) 4377 (aes_core_gcm.vhd rev 4) AES-CCM-128 AES-GCM-128 AES 4791 AES-CCM-128 AES-GCM-128 AES-GCM-256 AES 5926 4378 Aux (2.4 GHz) (aes_core_gcm.vhd rev 6) AES-CCM-256 AES 5952 AES-CCM-128 AES-GCM-128 AES-GCM-256 AES 5927 iPad Pro 11-inch (2nd gen) (A12Z Bionic) iPad Pro 12.9-inch (4th gen) (A12Z Bionic) 4378 Main (5 GHz) (aes_core_gcm_simult_ enc_mic.vhd rev 6) AES-CCM-256 AES 5953 AES-CCM-128 AES-GCM-128 AES-GCM-256 AES 5926 4387 Aux (2.4 GHz) (aes_core_gcm.vhd rev 6) AES-CCM-256 AES 5952 AES-CCM-128 AES-GCM-128 AES-GCM-256 AES 5927 iPad Air (4th gen) (A14 Bionic) iPad (10th gen) (A14 Bionic) iPad mini (6th gen) (A15 Bionic) iPad Pro 11-inch (3rd gen) (M1) iPad Pro 12.9-inch (5th gen) (M1) iPad Air (5th gen) (M1) 4387 Main (5 GHz) (aes_core_gcm_simult_ enc_mic.vhd rev 6) AES-CCM-256 AES 5953 AES-CCM-128 AES-GCM-128 AES-GCM-256 AES 5926 4388 Aux (2.4 GHz) (aes_core_gcm.vhd rev 6) AES-CCM-256 AES 5952 iPad Pro 11-inch (4th gen) (M2) iPad Pro 12.9-inch (6th gen) (M2) 4388 Main (5 GHz) (aes_core_gcm_simult_5_cycle.vhd rev 2) AES-CCM-128 AES-CCM-256 AES-GCM-128 AES-GCM-256 A1932 Version: 1.1 Classification: Public Page 199 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc. Apple iPadOS 16: iPad Security Target VID11350 A.4 Inventory of TSF Binaries and Libraries The list in this appendix is proprietary and only appears in the proprietary version of the ST. In the proprietary ST, this annex contains the inventory of TSF binaries and libraries required by the Assurance Activity for FPT_AEX_EXT.3. Note that the list is considered proprietary because entries in this list are specifically for internal development and do not reflect the production environment, however, by design one cannot capture the file listing on a production build of the TOE OS. Version: 1.1 Classification: Public Page 200 of 200 Last update: 2023-09-26 Copyright ©2023 Apple Inc.