COMMON CRITERIA PROTECTION PROFILE for NEW GENERATION CASH REGISTER FISCAL APPLICATON SOFTWARE (NGCRFAS PP) TSE-CCCS/PP-007 Revision No 2.0 Revision Date 06.05.2015 Document Code TSE-CCCS/PP-007 File Name NGCRFAS PROTECTION PROFILE Prepared by Oğuz DEMİROĞLU Approved by Salih SARI 2 Revision History Revision No Revision Reason Date of Revision 0.1 First Draft 04.05.2012 1.0 SFRs update 17.10.2012 1.1 "Gözlem raporu_1" update 17.12.2012 1.2 "Gözlem raporu_2" update 29.01.2013 1.3 "Gözlem raporu_3" update 01.04.2013 1.4 "Gözlem raporu_4" update 14.06.2013 1.5 "Gözlem raporu_5" update 02.08.2013 1.6 "Gözlem kararı 3" update 27.08.2013 1.7 "Gözlem kararı 3" update 28.08.2013 1.8 Maintanance update 18.12.2014 1.9 Maintenance update 29.04.2015 2.0 Maintenance update 06.05.2015 3 CONTENTS 1. PP INTRODUCTION.................................................................................................................. 4 1.1 PP Reference ................................................................................................................................ 4 1.2 TOE Overview ............................................................................................................................. 5 2. CONFORMANCE CLAIMS..................................................................................................... 11 2.1 CC Conformance Claim............................................................................................................. 11 2.2 PP Claim..................................................................................................................................... 11 2.3 Package Claim............................................................................................................................ 11 2.4 Conformance Claim Rationale................................................................................................... 11 2.5 Conformance Statement ............................................................................................................. 11 3. SECURITY PROBLEM DEFINITION................................................................................... 12 3.1 Introduction................................................................................................................................ 12 3.2 Threats........................................................................................................................................ 15 3.3 OSP ............................................................................................................................................ 18 3.4 Assumptions............................................................................................................................... 20 4. SECURITY OBJECTIVES....................................................................................................... 21 4.1 Security Objectives for the TOE ................................................................................................ 21 4.2 Security Objectives for the Operational Environment ............................................................... 21 4.3 Security Objective Rationale...................................................................................................... 23 5. EXTENDED COMPONENTS DEFINITION......................................................................... 28 6. SECURITY REQUIREMENTS ............................................................................................... 29 6.1 Security Functional Requirements for the TOE......................................................................... 29 6.2 Security Assurance Requirements for the TOE.......................................................................... 54 6.3 Security Requirements Rationale ............................................................................................... 54 7. ACRONYMS .............................................................................................................................. 72 8. BIBLIOGRAPHY ...................................................................................................................... 74 4 1. PP INTRODUCTION This Protection Profile (PP) describes the following items:  The Target of Evaluation (TOE) as a product and its position in production life cycle,  The security environment of the TOE includes: the assets to be protected, the threats to be encountered by the TOE , the development environment and production utilization phases,  The security objectives of the TOE and its supporting environment in terms of integrity and confidentiality of application data and programs,  Protection of the TOE and associated documentation during the development and production phases,  The Information Technology (IT) security requirements which include the TOE functional requirements and the TOE assurance requirements. 1.1 PP Reference Title: Common Criteria Protection Profile for New Generation Cash Register Fiscal Application Software (NGCRFAS PP) Sponsor: Presidency of Revenue Administration (PRA) Editor(s): Prepared by Oğuz DEMİROĞLU Approved by Salih SARI CC Version: 3.1 (Revision 4) Assurance Level: Minimum assurance level for this PP is EAL 2. General Status: Final Version Number: 2.0as of 6th May 2015 Registration : TSE-CCCS/PP-007 Key words: New Generation Cash Register, EMV, EFT-POS, SMART PINPAD, PRA, Electronic Registration Unit. Note: A glossary of terms used in the Protection Profile is given in ACRONYMS section of the document (Section 7). 5 1.2 TOE Overview The TOE addressed by this Protection Profile (PP) is an application software and crypto library which is the main items of a Fiscal Cash Register (FCR). TOE is used to process the transaction amount of purchases which can be viewed by both seller and buyer. Since transaction amount is used to determine tax revenues; secure processing, storing and transmission of this data is very important. The FCR is mandatory for first-and second-class traders and is not mandatory for sellers who sell the goods back to their previous seller as completely the same as the purchased good. In addition to TOE, which is the main item of FCR, FCR may consist of several other hardware and software components as described in Section 1.2.1, 1.2.2 for full functionality. TOE and related components are given in Figure 1. Usage and major security features of TOE are described in section 1.2.3. 1.2.1 General overview of the TOE and related components Figure 1 shows the general overview of the TOE and its related components as regarded in this PP. The green part of Figure 1 is the TOE. Yellow parts; that are given as input/output interface, fiscal memory, daily memory, database, ERU, fiscal certificate memory; are TOE’s environmental components which are crucial for functionality and security. Connections between the TOE and its environment are also subject to evaluation since these connections are made over the interfaces of the TOE. 6 Figure 1TOE and related components 1.2.2 Required Non-TOE Hardware/Software Software and hardware environment of the TOE are described below. 1.2.2.1 Software environment of TOE Application runs at the top of an operating system’s kernel, file-system as in a typical software environment. This structure is shown in Table 1. Table 1Typical software environment of TOE File System Operating System Kernel In addition to TOE, following software components are also necessary for security and functionality of the FCR: 7  FCR operating system which supports following features o at least 32-bit data processing capacity o multi-processing o IPv4 and IPv6 o NTP (Network Time Protocol)  Database, which is used to store sales data, has the following features; i. Database has data recording, organizing, querying, reporting features ii. Database stores sales records for main product groups (food, clothing, electronics, glassware etc.) and sub-product groups (milk, cigarette, fruit, trousers etc.) in order to track detailed statistics iii. Database has an indexing mechanism 1.2.2.2 Hardware Environment of TOE In addition to TOE, following hardware components are also necessary for security and functionality of the FCR:  Fiscal memory i. Fiscal memory has following features; a. Fiscal memory has the capacity to store at least 10 years (3650 days) of data, b. Fiscal memory keeps data at least 5 years after the capacity specified in (a) has been reached, c. Fiscal memory has to be fixed within FCR in a way that it cannot be removed without damaging the chassis. d. Fiscal memory is protected by mesh cover, e. Fiscal memory has the ability to be protected against magnetic and electronic threats, When the connection between fiscal memory and main processor is broken, FCR enters in maintenance mode, f. The data stored in the fiscal memory is not be lost in case of power off, g. Fiscal memory accepts only positive amounts from the application and the peripherals, h. FCR checks "Z" reports from fiscal memory during device start-up. In case where there are days for which Z report was not generated, FCR will be able to run in normal mode only after it generates Z report for the missing days. Seasonal firms can take cumulative Z report by specifying date and time range. 8 ii. Fiscal Memory includes following data; a. Fiscal symbol, company code and identification number of the device, b. Cumulative sum of the total sales and Value Added Tax (VAT) amounts for all sales receipts, starting from the device activation time (i.e. first use), c. Date and number of "Z" reports with total sales and VAT per day, d. The number of receipts per day.  Daily memory has following features; i. Receipt total and total VAT amount for each receipt are to be stored in the daily memory instantly. This data can be transmitted to PRA-IS, instantly or daily depending on demand. ii. Data in the daily memory which is not already transmitted to fiscal memory, cannot be modified in an uncontrolled way. iii. Data transmitted from daily memory to fiscal memory is to be kept in daily memory for at least 10 days. iv. Z reports, taken at the end of the day; and X reports, taken within the current day are produced by using the data in the daily memory. v. Following values are stored in the daily memory a. total VAT amount per day, b. total daily sales values per day grouped by payment type c. payment type (Cash, credit card etc.) d. number of receipts.  FCR supports X.509 formatted digital certificate generated by Authorized Certificate Authority. This Public Key Infrastructure(PKI) compatible digital certificate is called fiscal certificate and is used for authentication and secure communication between PRA-IS and FCR through Trusted Service Manager (TSM). For physical security, FCR is protected by electronic and mechanic systems called electronic seal. FCR uses cryptographic library for secure communication with PRA-IS and TSM  Electronic Record Unit(ERU)is used to keep second copy of the receipt and has following features; i. ERU stores information about receipts and FCR reports (except ERU reports) in a retrievable form. ii. ERU has at least 1.2 million row capacity. ERU may be included in the sealed part of the FCR. In this case ERU must have at least 40 million row capacity. iii. Data stored in ERU cannot be modified 9 iv. ERU also supports features specified in “Fiscal Cash Register General Communique Serial Number: 67, Part A” which is about Law No: 3100 except item (ii) above.  FCR devices support at least one of the internal ETHERNET, PSTN or mobile communication technology (GPRS etc.) interfaces and EFTPOS-integrated FCR devices support at least two of these interfaces for communication with PRA-IS (for data transfer) and TSM system (for parameter management and software update). External ETHERNET may be accepted as internal in case the data is encrypted in fiscal unit.  Incoming and outgoing data traffic for FCR passes over a firewall.  FCR supports the use of EFT-POS/SMART PINPAD.  FCR has a printer to print sales receipt.  FCR needs some input/output devices for functionalities listed below; i. FCR has a keyboard unit. It may optionally use a touch screen additionally ii. FCR has separate displays for cashier and buyer. iii. FCR has an internal battery to keep time information. 1.2.3 Major security and functional features The major functional and security features of the TOE are described below. 1.2.3.1 TOE functional features The TOE is a part of a FCR which is an electronic device for calculating and recording sales transactions and for printing receipts. TOE provides the following services; i. TOE stores sales data in fiscal memory. ii. TOE stores total receipt and total VAT amount for each receipt in daily memory. iii. TOE is able to generate reports (X report, Z report etc.). iv. TOE is able to transmit Z reports, receipt information, sale statistics and other information determined by PRA to PRA-IS in PRA Messaging Protocol format. v. TOE stores records of important events as stated in PRA Messaging Protocol Document [6] and transmits to PRA-IS in PRA Messaging Protocol format in a secure way. vi. TOE is able to be used by users in secure state mode or maintenance mode. Roles and modes of operation are described in 3.1.2 and 3.1.3 respectively. 10 1.2.3.2 TOE major security features The TOE provides following security features; i. TOE supports access control. ii. TOE is able to detect disconnection between main processor and fiscal memory and enter into the maintenance mode. iii. TOE supports usage of ITU X509 v3 formatted certificate and its protected private key for authentication and secure communication with PRA- IS and TSM. iv. TOE supports secure communication between FCR-PRA-IS and FCR–TSM. v. TOE supports secure communication with EFT-POS/SMART PINPAD vi. TOE ensures the integrity of event data, sales data, authentication data, characterization data and FCR parameters. vii. TOE records important events defined in PRA Messaging Protocol Document [6] and send urgent event data immediately to PRA-IS in a secure way. viii. TOE detects physical attacks to FCR and enters into the maintenance mode in such cases. 1.2.4 TOE type TOE is a embedded software application and hardware or software crypto library within FCR. 11 2. CONFORMANCE CLAIMS 2.1 CC Conformance Claim This protection profile claims conformance to:  Common Criteria for Information Technology Security Evaluation, Part 1: Introduction and General Model; CCMB-2012-09-001, Version 3.1, Revision 4, September 2012 [1]  Common Criteria for Information Technology Security Evaluation, Part 2: Security Functional Components; CCMB-2012-09-002, Version 3.1, Revision 4, September 2012 [2]  Common Criteria for Information Technology Security Evaluation, Part 3: Security Assurance Requirements; CCMB-2012-09-003, Version 3.1, Revision 4, September 2012 [3] As follows  Part 2 conformant,  Part 3 conformant. The  Common Methodology for Information Technology Security Evaluation, Evaluation Methodology; CCMB-2012-09-004, Version 3.1, Revision 4, September 2012 [4] has to be taken into account. 2.2 PP Claim This PP does not claim conformance to any protection profile. 2.3 Package Claim The current PP is conformant to the following security requirements package:  Assurance package EAL2 conformant to CC, part 3. 2.4 Conformance Claim Rationale Since this PP does not claim conformance to any protection profile, this section is not applicable. 2.5 Conformance Statement This PP requires demonstrable conformance of any ST or PP claiming conformance to this PP. 12 3. SECURITY PROBLEM DEFINITION 3.1 Introduction 3.1.1 External Entities PRA-IS PRA-IS takes sales data and event data from FCR by sending query with parameters to FCR through TSM. Trusted Service Manager TSM is the system which is used to load parameters, update software and manage FCR. Attacker Attacker tries to manipulate the TOE in order to change its expected behavior and functionality. Attacker tries to breach confidentiality, integrity and availability of the FCR. PRA On-site Auditor PRA On-site Auditor is an employee of PRA who performs on site audits onsite to control the existence of expected FCR functionalities by using the rights of FCR Authorised User. Certificate storage The certificate storage holds certificates and private key used for authentication and secure communication. Certificate storage is protected inside physical and logical tampering system. Time Information FCR gets time information from trusted server. Time information is used during receipt, event, fiscal memory record, daily memory record and ERU record creation and is also used to send information to PRA-IS according to FCR Parameters. Audit storage Audit storage can be any appropriate memory unit in FCR. Audit storage stores important events according to their criticality level (urgent, high, warning and information). List of events can be found in PRA Messaging Protocol Document [6]. Storage unit Storage units of FCR are database, fiscal memory, daily memory and ERU. Input interface Input interfaces provide necessary input data from input devices to the TOE. Input devices for FCR may be keyboard, barcode reader, QR code (matrix barcode) reader, order tracking device and global positioning devices. 13 External Device External Device is the device which is used to communicate with FCR by using secure channel according to External Device Communication Protocol Document [7] Output interface Output interfaces deliver outputs of the TOE to the output devices. Output devices for FCR may be printer, display etc. 3.1.2 Roles FCR Authorised User FCR Authorised User is the user who uses the functions of FCR and operates FCR by accessing the device over an authentication mechanism. Authorised Manufacturer User Authorised Manufacturer User works for FCR manufacturer and conducts maintenance works on FCR. 3.1.3 Modes of FCR Maintenance Mode: Maintenance Mode is the mode that allows only Authorised Manufacturer User; to fix FCR in case of any technical problem,  to change date and time information,  to change IP/Port information of TSM,  to review event data,  to start update operation of TOE. FCR does not allow any fiscal transaction in maintenance mode. FCR enters this mode when the following occur;  FCR Certificate check fails,  Mesh cover monitoring check fails,  A disconnection between fiscal memory and main processor occurs,  Electronic seal is opened, or forced by un authorised persons,  A technical problem is determined by FCR Manufacturer. Secure State Mode: Secure State Mode is the mode that allows;  FCR Authorised User;  to configure FCR, 14  to take fiscal reports. Secure State Mode is also allows;  Unauthenticated Users;  to do fiscal sales,  to get FCR reports (except fiscal reports). 3.1.4 Assets Sensitive data Sensitive data is used for secure communication with PRA-IS and TSM. Confidentiality and integrity of this asset needs to be protected. Application Note 1: Sensitive data may consist of symmetric keys (TREK, TRAK, TRMK and SSL session keys).  TREK is used to provide confidentiality of data transfer to PRA-IS,  TRAK is used to integrity control of data transferred to the PRA-IS,  TRMK is used for key transportation from PRA-IS to TOE,  SSL session keys are used for secure communication with the TSM. Event data Event data is used to obtain information about important events saved in audit storage. The integrity of this asset is crucial while stored in FCR and both integrity and confidentiality of this asset are important while it is transferred from TOE to PRA-IS. Event data is categorized in PRA Messaging Protocol Document [6]. Sales data Sales data is stored in storage unit. Sales data is required by PRA-IS to calculate tax amount and to provide detailed statistics about sales. The integrity of this asset has to be protected while stored in FCR; and both integrity and confidentiality have to be protected while it is transferred from TOE to PRA-IS. Characterization data (Identification data for devices) Characterization data is a unique number assigned to each FCR given by the manufacturer. PRA-IS uses characterization data for system calls to acquire sales data or event data of an FCR. Integrity of this asset has to be protected. 15 Authentication data Authentication data contains authentication information which is required for FCR Authorised User and Authorised Manufacturer User to gain access to FCR functionalities. Both integrity and confidentiality of this asset have to be protected. Time Information Time information is stored in FCR and synchronized with trusted server. Time information is important when logging important events and sending reports to the PRA-IS. The integrity of this asset has to be protected. Server Certificates Server certificates contain PRA-IS certificates (PPRA and PPRA-SIGN)PPRA and PPRA-SIGN certificates are used for encryption and sign verification process during key transportation between TOE and PRA-IS. FCR Parameters FCR parameters stored in FCR are updated by TSM after Z report is printed. FCR parameters set;  Sales and event data transferring time  Criticality level of event data sent to the PRA-IS  Maximum number of days that FCR will work without communicating with PRA-IS 3.2 Threats Threats averted by TOE and its environment are described in this section. Threats described below results from assets which are protected or stored by TOE or from usage of TOE with its environment. T.AccessControl Adverse action: Authenticated users could try to use functions which are not allowed. (e.g. FCRAuthorised User gainingaccess to Authorised ManufacturerUser functions) Threat agent:An attackerwho has basic attack potential, has physical and logical access to FCR. Asset:Event data, sales data, time information. T.Authentication Adverse action: Unauthenticated users could try to use FCR functions except doing fiscal sales and taking reports which are not fiscal. 16 Threat agent: An attacker who has basic attack potential, has logical and physical access to the FCR Asset: Sales data, event data, time information T.MDData - Manipulation and disclosure of data Adverse action: This threat deals with five types of data: event data, sales data, characterization data, authentication data and FCR parameters.  An attacker could try to manipulate the event data to hide its actions and unauthorised access to the FCR, failure reports, and deletion of logs. An attacker also could try to disclose important events while transmitted between PRA-IS and FCR.  An attacker could try to manipulate or delete the sales data generated by TOE which may result in tax fraud. In addition, an attacker also could try to disclose sales data while transmitted between PRA-IS and FCR. Manipulation and deletion of sales data located in FCR may be caused by magnetic and electronic reasons.  An attacker could try to manipulate the characterization data to cover information about taxfraud; to masqueradethe user identity.  An attacker could try to manipulate the FCR parameters to use FCR in undesired condition.  An attacker also could try to disclose and modify authentication data in FCR to gain access to functions which are not allowed to his/her. Threat agent: An attacker who has basic attack potential, has physical and logical access to the FCR. Asset: Event data, sales data, characterizationdata, FCR parameters and authentication data. T.Eavesdrop - Eavesdropping on event data, sales data and characterization data Adverse action: An attacker could try to eavesdrop event data, sales data and characterization data transmitted between the TOE and the PRA-IS and also between the TOE and the distributed memory units (Fiscal Memory, Database, Daily Memory and ERU). Threat agent: An attacker who has basic attack potential, physical and logical access to the FCR. Asset: Characterization data, sales data, and event data. T.Skimming - Skimming the event data, sales data and characterization data Adverseaction:An attacker could try to imitate TSM to set parameters to FCR via the communication channel. 17 Threat agent: An attacker who has basic attack potential and logical access to the FCR. Asset :FCR parameters T.Counterfeit - FCR counterfeiting Adverse action: An attacker could try to imitate FCR by using sensitive data while communicating with PRA-IS and TSM to cover information about tax fraud. Threat agent: An attacker who has basic attack potential,has physical and logical access to the FCR. Asset: Sensitive data T. Server counterfeiting Adverse action: An attacker could try to imitate PRA-IS by changing server certificates (PPRA and PPRA-SIGN) in FCR. In this way,the attacker could try to receive information from FCR. Threat agent: An attacker who has basic attack potential,has physical and logical access to the FCR. Asset: Server Certificates T.Malfunction - Cause malfunction in FCR Adverse action: An attacker may try to use FCR out of its normal operational conditions to cause malfunction without the knowledge of TOE. Threat agent: An attacker who has basic attack potential, has physical access to the FCR. Asset: Sales data, event data. T.ChangingTime Adverse action: An attacker may try to change time to invalidate the information about logged events and reports in FCR. Threat agent: An attacker who has basic attack potential, has physical and logical access to the FCR. Asset: Time Information. 18 3.3 OSP This section describes organizational security policies that must be satisfied. P.Certificate It has to be assured that certificates which are installed at initialization step, are compatible with ITU X.509 v3 format. FCR contains;  FCR certificate,  Certification Authority root and sub-root (subordinate) certificates that are used for verification of all certificates that are produced by Certification Authority,  PPRA certificate that is used for key transport process between FCR and PRA-IS,  PPRA-SIGN certificate that is used by TOE for signature verification,  Update Control certificate that is used to verify the signature of the TOE. P.Certificates Installation It has to be assured that environment of TOE provides secure installation of certificates (PPRAPPRA-SIGN, Certification Authority root and sub-root certificates, Update Control certificate, FCR certificates if handled as soft ) into the FCR at initialization phase. Before the installation of certificates, it has to be assured that asymmetric key pair is generated in a manner which maintains security posture. P.Comm_EXT -Communication betweenTOEand External Device It has to be assured that communication between TOEand External Devices is used to encrypted using AESalgorithm with 256 bits according to External Device Communication Protocol Document[7]. P.InformationLeakage-Informationleakage fromFCR It has to be assured that TOE’s environment provides a secure mechanism which prevents attacker to obtain sensitive information (privatekey) whenFCR performs signature operation; i.e by side channel attacks like SPA(Simple Power Analysis), SEMA (Simple Electromagnetic Analysis), DPA (Differential Power Analysis), DEMA(Differential Electromagnetic Analysis). P.SecureEnvironment It has to be assured that environment of TOE senses disconnection between fiscal memory and main processor. Then TOE enters into the maintenance mode and logs urgent event. It has to be assured that fiscal memory doesn't accept transactions with negative amounts which results in a decrease of total tax value. 19 It has to be assured that environment of TOE provides a mechanism that sales data in daily memory which is not reflected to the fiscal memory cannot be deleted and modified in an uncontrolled way. It has to be assured that sales data in ERU cannot be deleted and modified. P.PhysicalTamper It has to be assured that TOE environment and TOE provide a tamper respondent system which is formed by electromechanical seals. It has to be assured that physical tampering protection system protects the keys (asymmetric key, symmetric key),the certificates, event data, characterization data, FCR parameters and sales data in FCR. It has to be assured that TOE logs this type of events and enters into the maintenance mode when physical tampering protection system detect unauthorised access. It has to be assured that authorised access such as maintenance work or service works are logged. It has to be also assured that physical tampering protection system (mesh cover) protects fiscal memory. P.PKI - Public key infrastructure It has to be assured that IT environment of the TOE provides public key infrastructure for encryption, signing and key agreement. P.UpdateControl TOE is allowed to be updated by onlyTSM or Authorised Manufacturer User to avoid possible threats during this operation, FCR shall verify the signature of the new version of TOE to ensure that the TOE to be updated is signed by the correct organisation. Thus, the TOE to be updated is ensured to be the correct certified version because only the certified versions will be signed. In addition, FCR shall check version of TOE to ensure that it is the latest version. 20 3.4 Assumptions This section describes assumptions that must be satisfied by the TOE's operational environment. A. TrustedManufacturer It is assumed that manufacturing is done by trusted manufacturers. They process manufacturing step in a manner which maintains IT security. A.Control It is assumed that PRA-IS personnel performs random controls on FCR. During these controls PRA-IS personnel should check that if tax amount and total amount printed values on receipt and sent to PRA-IS are the same. In addition to this, a similar check should be made for events as well. A.Initialisation It is assumed that environment of TOE provides secure initialization steps. Initialization step is consist of secure boot of operating system, and integrity check for TSF data. Moreover, if certificate is handled as soft (not in the smartcard) it is assumed that environment of TOE provides secure installation of it to the FCR in initialization phase. Before certificate installation it is assumed that asymmetric key pair generated in a manner which maintains security posture. A. TrustedUser User is assumed to be trusted. It is assumed that for each sale a sales receipt is provided to the buyer. A.Activation It is assumed that environment of TOE provides secure activation steps at the beginning of the TOE operation phase and after each maintenance process. A.AuthorisedService It is assumed that repairing is done by trusted authorised services. The repairing step is processed in a manner which maintains legal limits. A.Ext_Key It is assumed that External Device (EFT-POS/SMART PINPAD) generates strong key for communicating with TOE and stores it in a secure way. A.Ext_Device Pairing It is assumed that External Device and TOE are paired by Authorised Service. 21 4. SECURITY OBJECTIVES This chapter describes security objectives for the TOE and its operational environment. 4.1 Security Objectives for the TOE This part describes security objectives provided by the TOE. O.AccessControl TOE must control authenticated user’s access to functions and data by using authorization mechanism. O.Event TOE must record important events stated as in PRA Messaging Protocol Document [6]. O.Integrity TOE must provide integrity for sales data, event data, characterization data, authentication data, sensitive data, server certificates and FCR parameters located in the FCR and between the distributed memory units. O.Authentication TOE must run authentication mechanismforusers and systems. O.Function TOE must ensure that processing of inputs to derive sales data and event data is accurate. TOE must ensure that time information is accurate by doing anomaly detection. TOE must enter a maintenance mode when maintenance mode events occur in section 3.1.3 O.Transfer TOE must provide confidentiality,integrity and authenticity for sales data, event data, characterization data transferred to the PRA-IS and FCR parameters transferred from TSM.TOE must provide confidentiality, integrity and authenticity for information send/received during external device communication. 4.2 Security Objectives for the Operational Environment This part describes security objectives provided by the operational environment. OE.Manufacturing Manufacturer should ensure that FCR is protected against physical attacks during manufacturing. OE.Delivery 22 Authorised Manufacturer User must ensure that delivery and activation of theTOE done by a secure way. OE.KeyGeneration Asymmetric key and certificate generation mechanism shall be compatible with ITU X.509 format and accessible only by trusted persons. OE.SecureStorage Asymmetric private key shall be stored within smartcard or Secure-IC’s. Sensitive Data, all certificates, event data, characterization data and sales data shall be stored within secure environment protected by electronic seal. OE.KeyTransportation Transportation and installation of asymmetric private key to the FCR must be done by protecting their confidentiality and integrity. In addition to this, transportation and installation of server certificates, Certification Authority root and sub-root certificates, FCR certificates and update control certificates must be done by protecting their integrity. OE.TestEnvironment Before FCR activation; test interfaces (functions, parameters) inserted in TOE shall be disabled or removed. OE.StrongAlgorithm Environment of TOE shall use asymmetric private keys for signature operation by using libraries of smartcard and Secure-IC’s. These libraries used in FCR shall be strong. They should also have protection against side channel analysis (SPA, DPA, SEMA, DEMA). OE.UpgradeSoftware FCR software updates should be get passed verdict from Common Criteria maintenance or reevaluation procedures (according to update type) before installed to the FCR. This will be validated by the FCR, using the cryptographic signature control methods. OE.TrustedUser Usersshall act responsibly. OE.Control PRA Onsite Auditor must check FCR functionality by controlling tax amount on the receipt and tax amount sent to the PRA-IS. OE.External Device 23 External Device should generate strong key for communicating with TOE and should store it in a secure way. OE.Ext_Pairing External Device should be paired with TOE by only Authorised Service. OE.SecureEnvironment Fiscal memory shall not accept transactions with negative amounts which results in a decrease of total tax value. Tampering protection system shall protect fiscal memory with mesh cover. Environment of TOE provides secure initialization steps. Initialization step is consist of secure boot of operating system, and integrity check for TSF data. 4.3 Security Objective Rationale Table 2 provides security problem definition covered by security objectives. Threats and OSPs are addressed by security objectives for the TOE and its operational environment. Assumptions are addressed by only security objectives for the operational environment. Table 2Security Objective Rationale Threats OSPs Assumptions T.AccessControl T. Authentication T.MDData T.Eavesdropping T.Server Counterfeiting T.Skimming T.Counterfeit T.Malfunction T.ChangingTime P.Certificate P.Certificates Installation P.SecureEnvironment P.PhysicalTamper P.PKI P.InformationLeakage P.Comm_EXT P.UpdateControl A.Ext_Key A.TrustedManufacturer A.Control A.AuthorisedService A.Initialisation A.Activation A.Ext_Device Pairing A.TrustedUser O.AccessControl X X X X O.Event X X X X X X X X X X O.Integrity X X X X X X O.Authentication X X O.Function X X X O.Transfer X X X OE.External Device X OE.Manufacturing X OE.Delivery X X 25 OE.KeyGeneration X X OE.SecureStorage X X X X X X OE.KeyTransportation X X X OE.TestEnvironment X OE.StrongAlgorithm X OE.UpgradeSoftware X OE.TrustedUser X X OE.Control X OE.SecureEnvironment X X X OE.Ext_Pairing X 26 Justification about Table 2 is given below; T.AccessControl is addressed by O.AccessControl to control user access to functions and data; O.Event to log all access attempts. T.Authentication is addressed by O.Authentication to ensure that if user is authenticated to the FCR; O.Event to log successful/unsuccessful authentication attempts. T.MDDatais addressed by O.Integrity to ensure integrity of sales data,event data, characterization data, authentication data and FCR parameters in FCR with logical and physical security features; O.Transfer to ensure integrity, confidentiality and authenticity of sales data, event data and characterization data during transferring to PRA-IS and parameters during transfering from TSM to FCR ; O.Event to log unexpected behavior of these memories and unexpected behavior in transferring data; OE.SecureStorage to provide secure environment for Sensitive Data, all certificates, event data, characterization data and sales data. T.Eavesdropping is addressed by O.Transfer to ensure confidentiality of sales data, event data and characterization data during communication with PRA-IS; O.Integrity to ensure the integrity of event data, sales data and characterization data; O.Event to log physical tamper; by OE.SecureStorage to provide secure environment for event data, characterization data and sales data T.Server Counterfeiting is addressed by O.Integritytoensure the integrity of server certificates (PPRA, PPRA-SIGN); O.Eventto log physical tamper; OE.SecureStorage to provide secure environment for server certificates. T.Skimming is addressed by O.Authentication to establish communication only with permitted systems. T.Counterfeitis addressed by O.Integrity to ensure the integrity of sensitive data; O.Event to log physical tamper; OE.SecureStorage to provide secure environment for sensitive data. T.Malfunctionis addressed by O.Function to ensure functions processing accurately; O.Event to log unexpected behavior of functions. T.ChangingTime is addressed byO.Event to log unexpected changes in time information; by O.Access Control to control user access to time information;by O.Function to ensure accuracy of time information. P.Certificate is fulfilled by OE.KeyGeneration. 27 P.CertificateInstallation is fulfilled OE.KeyTransportation and OE.SecureStorage P.SecureEnvironmentis fulfilled by OE.SecureEnvironment,O.Event,O.Integrityand O.Function. P.PhysicalTamper is fulfilled by OE.SecureEnvironment, O.AccessControl, O.Event, O.Integrity and OE.SecureStorage. P.PKI is fulfilled by OE.KeyTransportation P.InformationLeakage is fulfilled by OE.StrongAlgorithmto ensure that cryptographic algorithms used by FCR haveside channel protection. P.Comm_EXT is fulfilled by O.Transfer. P. UpdateControlis upheld by OE.UpgradeSoftware and O.AccessControl. A.Ext_Key is upheld OE.External Device. A.TrustedManufacturer is upheld by OE.Manufacturing and OE.TestEnvironment. A.Control is upheld by OE.Control. A. AuthorisedService is upheld by OE.TrustedUser. A.Initialisation is upheld by OE.KeyGeneration, OE.SecureEnvironment and OE.KeyTransportation. A.Activation is upheld by OE.Delivery. A.TrustedUser is upheld by OE.TrustedUser. A.Ext_Device Pairing is upheld byOE.Ext_Pairing. 28 5. EXTENDED COMPONENTS DEFINITION This protection profile does not use any components defined as extensions to CC part 2. 29 6. SECURITY REQUIREMENTS This chapter describes the security functional and the assurance requirements which have to be fulfilled by the TOE. Those requirements comprise functional components from CC part 2 and the assurance components as defined for the Evaluation Assurance Level 2 from CC part 3. The following notations are used: Refinement operation (denoted in such a way that added words are in bold text and changed words are crossed out): is used to add details to a requirement, and thus further restricts a requirement. Selection operation (denoted by italicised bold text and placed in square bracket): is used to select one or more options provided by the CC in stating a requirement. Assignment operation (denoted by underlined text and placed in square bracket): is used to assign a specific value to an unspecified parameter, such as the length of a password. Showing the value in square brackets indicates assignment. Iteration operation are identified with a slash (e.g. “(/)”) 6.1 Security Functional Requirements for the TOE This chapter defines the security functional requirements for the TOE according to the functional requirements components drawn from the CC part 2 version 3.1 revision 4. 6.1.1 Class FAU Security Audit 6.1.1.1 FAU_GEN Security audit data generation FAU_GEN.1 Audit data generation Hierarchical to: No other components. Dependencies: FPT_STM.1 Reliable time stamps FAU_GEN.1.1 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; and c) [the audi table security events specified in PRA Messaging Protocol Document[6]]. 30 FAU_GEN.1.2 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 applicable), 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/ST, [none]. 6.1.1.2 FAU_SAR Security audit review FAU_SAR.1 Audit review Hierarchical to: No other components. Dependencies: FAU_GEN.1 Audit data generation. FAU_SAR.1.1 The TSF shall provide [Authorised Manufacturer User] with the capability to read [all event data] 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. 6.1.1.3 FAU_STG Security audit event storage FAU_STG.1 Protected audit trail storage Hierarchical to: No other components. Dependencies: FAU_GEN.1 Audit data generation FAU_STG.1.1 The TSF shall protect the stored audit records in the audit trail from unauthorised deletion. FAU_STG.1.2 The TSF shall be able to [prevent]unauthorised modifications to the stored audit records in the audit trail. FAU_STG.4 Prevention of audit data loss Hierarchical to: FAU_STG.3 Action in case of possible audit data loss Dependencies: FAU_STG.1 Protected audit trail storage FAU_STG.4.1 The TSF shall [overwrite the oldest stored audit records] and [none] if the audit trail is full. 31 6.1.2 Class FCO Communication 6.1.2.1 FCO_NRO Non-repudiation of origin FCO_NRO.2 Enforced proof of origin Hierarchical to: FCO_NRO.1 Selective proof of origin Dependencies: FIA_UID.1 Timing of identification FCO_NRO.2.1 The TSF shall enforce the generation of evidence of origin for transmitted [sales data and event data] at all times. FCO_NRO.2.2 The TSF shall be able to relate the [originator identity, time of origin] of the originator of the information, and the [body of the message] of the information to which the evidence applies. FCO_NRO.2.3 The TSF shall provide a capability to verify the evidence of origin of Information to [recipient] given [immediately]. 6.1.3 Class FCS Cryptographic Support 6.1.3.1 FCS_CKM Cryptographic key management FCS_CKM.1/ TRMK Cryptographic key generation Hierarchical to: No other components. Dependencies: [FCS_CKM.2 Cryptographic key distribution, or FCS_COP.1 Cryptographic operation] FCS_CKM.4 Cryptographic key destruction FCS_CKM.1.1 The TSF shall generate cryptographic keys in accordance with a specified cryptographic key generation algorithm [RNG] and specified cryptographic key sizes [256 bits] that meet the following: [assignment: list of standards]. FCS_CKM.2 Cryptographic key distribution Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction 32 FCS_CKM.2.1 The TSF shall distribute cryptographic keys in accordance with a specified cryptographic key distribution method [according to PRA Messaging Protocol Document [6] ] that meets the following: [assignment: list of standards]. FCS_CKM.1/TLS_AES Cryptographic key generation Hierarchical to: No other components. Dependencies: [FCS_CKM.2 Cryptographic key distribution, or FCS_COP.1 Cryptographic operation] FCS_CKM.4 Cryptographic key destruction FCS_CKM.1.1 The TSF shall generate cryptographic keys in accordance with a specified cryptographic key generation algorithm [PRF] and specified cryptographic key sizes [AES:128 bits and/or AES:256 bits] that meet the following: [RFC 5246]. FCS_CKM.1/TLS_HMAC Cryptographic key generation Hierarchical to: No other components. Dependencies: [FCS_CKM.2 Cryptographic key distribution, or FCS_COP.1 Cryptographic operation] FCS_CKM.4 Cryptographic key destruction FCS_CKM.1.1 The TSF shall generate cryptographic keys in accordance with a specified cryptographic key generation algorithm [PRF] and specified cryptographic key sizes [256 bits] that meet the following: [RFC 5246]. FCS_CKM.1/DHE-KEY Cryptographic key generation Hierarchical to: No other components. Dependencies: [FCS_CKM.2 Cryptographic key distribution, or FCS_COP.1 Cryptographic operation] FCS_CKM.4 Cryptographic key destruction FCS_CKM.1.1 The TSF shall generate cryptographic keys in accordance with a specified cryptographic key generation algorithm [RNG] and specified cryptographic key sizes [2048 bits] that meet the following: [assignment: list of standards]. FCS_CKM.1/EXT-DEV KHMAC Cryptographic key generation 33 Hierarchical to: No other components. Dependencies: [FCS_CKM.2 Cryptographic key distribution, or FCS_COP.1 Cryptographic operation] FCS_CKM.4 Cryptographic key destruction FCS_CKM.1.1 The TSF shall generate cryptographic keys in accordance with a specified cryptographic key generation algorithm [PRF] and specified cryptographic key sizes [256 bits] that meet the following: [RFC 5246]. FCS_CKM.1/EXT-DEVKENC Cryptographic key generation Hierarchical to: No other components. Dependencies: [FCS_CKM.2 Cryptographic key distribution, or FCS_COP.1 Cryptographic operation] FCS_CKM.4 Cryptographic key destruction FCS_CKM.1.1 The TSF shall generate cryptographic keys in accordance with a specified cryptographic key generation algorithm [PRF] and specified cryptographic key sizes [AES:256 bits] that meet the following: [RFC 5246]. FCS_CKM.4 Cryptographic key destruction Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4.1 The TSF shall destroy cryptographic keys in accordance with a specified cryptographic key destruction method [assignment: cryptographic keydestruction method] that meets the following: [assignment: list of standards]. Application Note 2: Keys shall be deleted according to below Table 3. Table 3Key Management Table Keys When TREK  The usage number that is specified PRA Messaging Protocol Document [6]is exceeded  Electronic seal is opened by authorized/unauthorized user TRAK  The usage number that is specified PRA Messaging Protocol 34 Document [6] is exceeded  Electronic seal is opened by authorized/unauthorized user TRMK After key transport from PRA-IS to TOE for TREK and TRAK KENC  Conditions specified in External Device Communication Protocol Document [7] occur  The usage number that is specified External Device Communication Protocol Document[7] is exceeded KHMAC  Conditions specified in External Device Communication Protocol Document [7] occur  The number that is specified External Device Communication Protocol Document[7]is exceeded DHE-KEY After key agrement between TOE and External Device 6.1.3.2 FCS_COP/ ENC - DEC Cryptographic operation FCS_COP.1/TREK Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [encryption] in accordance with a specified cryptographic algorithm [AES in CBC mode] and cryptographic key sizes [AES:256 bits ] that meet the following: [NIST SP800-38A (CBC.AES256)]. FCS_COP.1/TRAK Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction 35 FCS_COP.1.1 The TSF shall perform [encryption and decryption for integrity protection] in accordance with a specified cryptographic algorithm [AES in CBC mode] and cryptographic key sizes [AES:256 bits ] that meet the following: [NIST SP800-38A (CBC.AES256)]. FCS_COP.1/TRMK-DEC Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [decryption] in accordance with a specified cryptographic algorithm [AES in CBC mode] and cryptographic key sizes [256 bits] that meet the following: [NIST SP800-38A (CBC.AES256)]. FCS_COP.1/PUB-ENC Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [encryption] in accordance with a specified cryptographic algorithm [RSA] and cryptographic key sizes [2048 bits] that meet the following: [PKCS#1 v2.1 (RSAES-PKCS1-v1_5) ]. FCS_COP.1/SIGN-VER Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction 36 FCS_COP.1.1 The TSF shall perform [signature verification] in accordance with a specified cryptographic algorithm [RSA] and cryptographic key sizes [2048 bits] that meet the following: [PKCS#1 v1.5, SHA256 Type 2 (random padding)]. FCS_COP.1/ENC-DEC Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [encryption and decryption] in accordance with a specified cryptographic algorithm [AES] and cryptographic key sizes [AES:128 bits and AES:256bits] that meet the following: [assignment: list of standards]. Application Note3: TOE shall use one of the AES mode of operation listed below;  CBC mode according to NIST SP800-38A standart  GCM mode according to NIST SP 800-38Dstandart FCS_COP.1/INT-AUTH Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [authentication and integrity protection] in accordance with a specified cryptographic algorithm [HMAC-SHA256] and cryptographic key sizes [256 bits] that meet the following: [FIPS 198-1 and NIST FIPS PUB 180-2]. FCS_COP.1/HASHING Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] 37 FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [hashing] in accordance with a specified cryptographic algorithm [SHA2] and cryptographic key sizes [none] that meet the following: [NIST FIPS PUB 180-2]. FCS_COP.1/ EXT-DEV KEYEXCHANGE Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [key agreement] in accordance with a specified cryptographic algorithm [DHE]and cryptographic key sizes [2048 bits] that meet the following: [NIST SP 800-56A]. FCS_COP.1/EXT-DEV KENC Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [encryption and decryption] in accordance with a specified cryptographic algorithm [AES with CBC] and cryptographic key sizes [256bits] that meet the following:[NIST SP800-38A (CBC.AES256)]. FCS_COP.1/ EXT-DEV KHMAC Cryptographic operation Hierarchical to: No other components. Dependencies: [FDP_ITC.1 Import of user data without security attributes, or FDP_ITC.2 Import of user data with security attributes, or FCS_CKM.1 Cryptographic key generation] FCS_CKM.4 Cryptographic key destruction FCS_COP.1.1 The TSF shall perform [encryption and decryption for integrity protection] in accordance with a specified cryptographic algorithm [HMAC-SHA256] and cryptographic key sizes [256 bits] that meet the following: [FIPS 198-1 and NIST FIPS PUB 180-2]. 38 6.1.4 Class FDP User Data Protection 6.1.4.1 FDP_ACC Access control policy FDP_ACC.1 Subset access control Hierarchical to: No other components. Dependencies: FDP_ACF.1 Security attribute based access control FDP_ACC.1.1 The TSF shall enforce the [Administrative Access Control SFP] on [Subjects: FCR Authorised User and Authorized Manufacturer User Objects: Sales and event data, exchange rates, time information. Operations: Secure state mode and maintenance mode actions],[assignment: list of subjects, objects, and operations among subjects and objects covered by the SFP]. 6.1.4.2 FDP_ACF Access control functions FDP_ACF.1 Security attribute based access control Hierarchical to: No other components. Dependencies: FDP_ACC.1 Subset access control FMT_MSA.3 Static attribute initialisation FDP_ACF.1.1 The TSF shall enforce the [Administrative Access Control SFP] to objects based on the following [Subjects: FCR Authorised User and Authorized Manufacturer User Subject Attributes: Privileges Objects: Sales and event data, exchange rates, time information Object Attributes: Access Control List (Secure State Mode and Maintenance Mode access rights) Operations: Secure State Mode and Maintenance Mode actions describe in 3.1.3],[assignment: list of subjects and objects controlled under the indicated SFP, and for each, the SFP-relevant security attributes, or named groups of SFP-relevant security attributes]. FDP_ACF.1.2 The TSF shall enforce the following rules to determine if an operation among controlled subjects and controlled objects is allowed: [verify the operator’s privileges]. 39 FDP_ACF.1.3 The TSF shall explicitly authorise access of subjects to objects based on the following additional rules: [none]. FDP_ACF.1.4 The TSF shall explicitly deny access of subjects to objects based on the following additional rules: [none]. 6.1.4.3 FDP_ETC Export from the TOE FDP_ETC.2/TSM Export of user data with security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or FDP_IFC.1 Subset information flow control] FDP_ETC.2.1 The TSF shall enforce the [Information Flow Control SFP with TSM and PRA-IS] when exporting user data, controlled under the SFP(s), outside of the TOE. FDP_ETC.2.2 The TSF shall export the user data with the user data's associated security attributes. FDP_ETC.2.3 The TSF shall ensure that the security attributes, when exported outside the TOE, are unambiguously associated with the exported user data. FDP_ETC.2.4 The TSF shall enforce the following rules when user data is exported from the TOE: [Communication with secure messaging according to PRA Messaging Protocol Document[6]]. Application Note 4: User data (sales data, event data and TRMK) are exported from FCR to the PRA-IS via TSM. FDP_ETC.2 /EFT-POS/SMART PINPAD Export of user data with security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or FDP_IFC.1 Subset information flow control] FDP_ETC.2.1 The TSF shall enforce the [Information Flow Control SFP with EFT- POS/SMART PINPAD Device] when exporting user data, controlled under the SFP(s), outside of the TOE. FDP_ETC.2.2 The TSF shall export the user data with the user data's associated security attributes. FDP_ETC.2.3 The TSF shall ensure that the security attributes, when exported outside the TOE, are unambiguously associated with the exported user data. 40 FDP_ETC.2.4 The TSF shall enforce the following rules when user data is exported from the TOE: [Communication with secure messaging according to External Device Communication Protocol Document[7]]. 6.1.4.4 FDP_IFC Information flow control policy FDP_IFC.1/TSMCOMMUNICATION Subset information flow control Hierarchical to: No other components. Dependencies: FDP_IFF.1 Simple security attributes FDP_IFC.1.1 The TSF shall enforce the [Information Flow Control SFP with TSM and PRA- IS] on [subjects (TSM and PRA-IS) and objects(sales data, event data reports, FCR parameters, TREK, TRAK and TRMK) as specified in PRA Messaging Protocol Document [6]]. FDP_IFC.1/EFT-POS/SMART PINPADCOMMUNICATION Subset information flow control Hierarchical to: No other components. Dependencies: FDP_IFF.1 Simple security attributes FDP_IFC.1.1 The TSF shall enforce the [Information Flow Control SFP with EFT- POS/SMART PINPAD Device] on [subjects (EFT-POS/SMART PINPAD) and objects (amount information in sales data and outcome of the operation) as specified in External Device Communication Protocol Document[7]]. 6.1.4.5 FDP_IFF Information flow control functions FDP_IFF.1/TSMCOMMUNICATION Simple security attributes Hierarchical to: No other components. Dependencies: FDP_IFC.1 Subset information flow control FMT_MSA.3 Static attribute initialisation 41 FDP_IFF.1.1 The TSF shall enforce the [Information Flow Control SFP with TSM and PRA-IS] based on the following types of subject and information security attributes: [TOE has ability to send reports related to sales data and event data and TRMK to PRA-IS by using subject identifier (IP/Port information) and object identifier (file name);TOE has ability to receive TREK and TRAK from PRA-IS by using subject identifier (IP/Port information) and object identifier (information label)according to PRA Messaging Protocol Document [6];TOE has ability to receive FCR parameters from TSM by using subject identifier (IP/Port information) and object identifier (information label) according to PRA Messaging Protocol Document[6]]. FDP_IFF.1.2 The TSF shall permit an information flow between a controlled subject and controlled information via a controlled operation if the following rules hold: [Communication with secure messaging according to PRA Messaging Protocol Document [6]]. FDP_IFF.1.3 The TSF shall enforce the [none]. FDP_IFF.1.4 The TSF shall explicitly authorize an information flow based on the following rules: [none]. FDP_IFF.1.5 The TSF shall explicitly deny an information flow based on the following rules: [none]. FDP_IFF.1/EFT-POS/SMART PINPADCOMMUNICATION Simple security attributes Hierarchical to: No other components. Dependencies: FDP_IFC.1 Subset information flow control FMT_MSA.3 Static attribute initialization FDP_IFF.1.1 The TSF shall enforce the [Information Flow Control SFP with EFT- POS/SMART PINPAD Device] based on the following types of subject and information security attributes: [TOE has ability to send amount information to EFT-POS/SMART PINPAD Device by using subject identifier (EFT-POS/SMART PINPAD label and source port).TOE has ability to receive outcome of the operation conducted by the EFT- POS/SMART PINPAD Device by using subject identifier (source port)]. 42 FDP_IFF.1.2 The TSF shall permit an information flow between a controlled subject and controlled information via a controlled operation if the following rules hold: [Communication with secure messaging according to External Device Communication Protocol Document[7]]. FDP_IFF.1.4 The TSF shall explicitly authorise an information flow based on the following rules: [none]. FDP_IFF.1.5 The TSF shall explicitly deny an information flow based on the following rules: [none]. 6.1.4.6 FDP_ITC Import from the outside of the TOE FDP_ITC.2/TSM Import of user data with security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or FDP_IFC.1 Subset information flow control] [FTP_ITC.1 Inter-TSD trusted channel, or FTP_TRP.1 Trusted Path] FPT_TDC.1 Inter-TSF basic TSF data consistency FDP_ITC.2.1 The TSF shall enforce the [Information Flow Control SFP with TSM and PRA-IS] when importing user data, controlled under the SFP, from outside of the TOE. FDP_ITC.2.2 The TSF shall use the security attributes associated with the imported user data. FDP_ITC.2.3 The TSF shall ensure that the protocol used provides for the unambiguous association between the security attributes and the user data received. FDP_ITC.2.4 The TSF shall ensure that interpretation of the security attributes of the imported user data is as intended by the source of the user data. FDP_ITC.2.5 The TSF shall enforce the following rules when importing user data controlled under the SFP from outside the TOE: [Communication with secure messaging according to PRA Messaging Protocol Document [6]]. Application Note5: FCR parameters are imported from TSM to TOE. TREK and TRAK are imported from PRA-IS to TOE 43 FDP_ITC.2/EFT-POS/SMART PINPAD Import of user data with security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or FDP_IFC.1 Subset information flow control] [FTP_ITC.1 Inter-TSD trusted channel, or FTP_TRP.1 Trusted Path] FPT_TDC.1 Inter-TSF basic TSF data consistency FDP_ITC.2.1 The TSF shall enforce the [Information Flow Control SFP with EFT- POS/SMART PINPAD Device] when importing user data, controlled under the SFP, from outside of the TOE. FDP_ITC.2.2 The TSF shall use the security attributes associated with the imported user data FDP_ITC.2.3 The TSF shall ensure that the protocol used provides for the unambiguous association between the security attributes and the user data received. FDP_ITC.2.4 The TSF shall ensure that interpretation of the security attributes of the imported user data is as intended by the source of the user data. FDP_ITC.2.5 The TSF shall enforce the following rules when importing user data controlled under the SFP from outside the TOE: [Communication with secure messaging according to External Device Communication Protocol Document[7]]. 6.1.4.7 FDP_SDI Stored data integrity FDP_SDI.2/MEMORY Stored data integrity monitoring and action Hierarchical to: FDP_SDI.1 Stored data integrity monitoring Dependencies: No dependencies. FDP_SDI.2.1 The TSF shall monitor user data sales data stored in fiscal memory and ERU; event data and characterization data stored in containers controlled by the TSF for [integrity errors]on all objects, based on the following attributes: [assignment: user data attributes]. FDP_SDI.2.2 Upon detection of a data integrity error, the TSF shall [generate an audit event and then enter into the maintenance mode]. FDP_SDI.2/DAILY and PRMTR Stored data integrity monitoring and action 44 Hierarchical to: FDP_SDI.1 Stored data integrity monitoring Dependencies: No dependencies. FDP_SDI.2.1 The TSF shall monitor user data sales data stored in containers daily memory and FCR parameters stored in containers controlled by the TSF for [integrity errors]on all objects, based on the following attributes: [assignment: user data attributes]. FDP_SDI.2.2 Upon detection of a data integrity error, the TSF shall [generate an audit event and print Z report automatically]. 6.1.5 Class FIA Identification and Authentication 6.1.5.1 FIA_AFL Authentication failures FIA_AFL.1/MANUFACTURER Authentication failure handling Hierarchical to: No other components. Dependencies: FIA_UAU.1 Timing of authentication FIA_AFL.1.1 The TSF shall detect when [selection: [assignment: positive integer number], an administrator configurable positive integer within [assignment: range of acceptable values]] unsuccessful authentication attempts occur related to [Authorized Manufacturer User authentication]. FIA_AFL.1.2 When the defined number of unsuccessful authentication attempts has been [met], the TSF shall [assignment: list of actions]. FIA_AFL.1/AUTHORISED Authentication failure handling Hierarchical to: No other components. Dependencies: FIA_UAU.1 Timing of authentication FIA_AFL.1.1 The TSF shall detect when [selection: [assignment: positive integer number], an administrator configurable positive integer within[assignment: range of acceptable values]] unsuccessful authentication attempts occur related to [FCR Authorised User]. FIA_AFL.1.2 When the defined number of unsuccessful authentication attempts has been [met], the TSF shall [assignment: list of actions]. 6.1.5.2 FIA_UAU User authentication FIA_UAU.1 Timing of authentication 45 Hierarchical to: No other components. Dependencies: FIA_UID.1 Timing of identification FIA_UAU.1.1 The TSF shall allow [to do fiscal sales and to get FCR reports (except fiscal reports)] on behalfof the user to be performed before the user is authenticated. FIA_UAU.1.2The TSF shall require each user to be successfully authenticated before allowing any other TSF-mediated actions on behalf of that user. FIA_UAU.4 Single-use authentication mechanisms Hierarchical to: No other components. Dependencies: No dependencies. FIA_UAU.4.1 The TSF shall prevent reuse of authentication data related to[the authentication mechanism employed to authenticate Authorized Manufacturer User]. 6.1.5.3 FIA_UID User Identification FIA_UID.1 Timing of identification Hierarchical to: No other components. Dependencies: No dependencies. FIA_UID.1.1 The TSF shall allow [to do fiscal sales and to get FCR report (except fiscal reports)] on behalfof the user to be performed before the user is identified. FIA_UID.1.2 The TSF shall require each user to be successfully identified before allowing any other TSF-mediated actions on behalf of that user. 6.1.6 Class FMT Security Management 6.1.6.1 FMT_MOF Management of security functions behaviour FMT_MOF.1 Management of security functions behaviour Hierarchical to: No other components. Dependencies: FMT_SMR.1 Security roles FMT_SMF.1 Specification of Management Functions 46 FMT_MOF.1.1 The TSF shall restrict the ability to [modify the behaviour of] the functions [New Generation Cash Register Application Software normal operation functions]to[assignment: the authorised identified roles]nobody. Application Note6: No auhtorised user makes the changes on the behaviour of the functions. The TSF itself makes the behavioral changes according to the FCR parameters received from TSM. Application Note7:Ability to Modification of behaviour shall be used according to PRA directives.Normal operation functions includes all FCR parameters that are sent to FCR by TSM. 6.1.6.2 FMT_MSA Management of security attributes FMT_MSA.1/PRIVILEGES Management of security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or FDP_IFC.1 Subset information flow control] FMT_SMR.1 Security roles FMT_SMF.1 Specification of Management Functions FMT_MSA.1.1 The TSF shall enforce the [Administrative Access Control SFP] to restrict the ability to [modify] the security attributes [Privileges and Access Control List] to [none]. FMT_MSA.1/ IP:PORTINFO Management of security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or FDP_IFC.1 Subset information flow control] FMT_SMR.1 Security roles FMT_SMF.1 Specification of Management Functions FMT_MSA.1.1 The TSF shall enforce the [Information Flow Control SFP with TSM and PRA-IS] to restrict the ability to [modify] the security attributes [IP:Port Information] to [Authorised Manufacturer User]. FMT_MSA.1/FILE NAME and INFO-LABEL Management of security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or 47 FDP_IFC.1 Subset information flow control] FMT_SMR.1 Security roles FMT_SMF.1 Specification of Management Functions FMT_MSA.1.1 The TSF shall enforce the [Information Flow Control SFP with TSM and PRA-IS] to restrict the ability to [modify] the security attributes [file name and information label] to [none]. FMT_MSA.1/EFT-POS/SMART PINPAD SOURCE PORT INFO Management of security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or FDP_IFC.1 Subset information flow control] FMT_SMR.1 Security roles FMT_SMF.1 Specification of Management Functions FMT_MSA.1.1 The TSF shall enforce the [Information Flow Control SFP with EFT_POS/SMART PINPAD Device] to restrict the ability to [modify] the security attributes [Source Port] to [none]. FMT_MSA.1/ EFT-POS/SMART PINPAD LABEL INFO Management of security attributes Hierarchical to: No other components. Dependencies: [FDP_ACC.1 Subset access control, or FDP_IFC.1 Subset information flow control] FMT_SMR.1 Security roles FMT_SMF.1 Specification of Management Functions FMT_MSA.1.1 The TSF shall enforce the [Information Flow Control SFP with EFT_POS/SMART PINPAD Device] to restrict the ability to [modify] the security attributes [EFT-POS/SMART PINPAD Label] to [none]. FMT_MSA.3/USERS and SYSTEMS Static attribute initialization Hierarchical to: No other components. Dependencies: FMT_MSA.1 Management of security attributes FMT_SMR.1 Security roles 48 FMT_MSA.3.1 The TSF shall enforce the [Administrative Access Control SFP, Information Flow Control SFP with TSM and PRA-IS] to provide [restrictive]default values for security attributes that are used to enforce the SFP. FMT_MSA.3.2 The TSF shall allow the [none] to specify alternative initial values to override the default values when an object or information is created. FMT_MSA.3/EFT-POS/SMART PINPAD Static attribute initialization Hierarchical to: No other components. Dependencies: FMT_MSA.1 Management of security attributes FMT_SMR.1 Security roles FMT_MSA.3.1 The TSF shall enforce the [Information Flow Control SFP with EFT- POS/SMART PINPAD Device] to provide [permissive]default values for security attributes that are used to enforce the SFP. FMT_MSA.3.2 The TSF shall allow the [none] to specify alternative initial values to override the default values when an object or information is created. 6.1.6.3 FMT_MTD Management of TSF data FMT_MTD.1/ FCR AUTHORİSED USER Management of TSF data Hierarchical to: No other components. Dependencies: FMT_SMR.1 Security roles FMT_SMF.1 Specification of Management Functions FMT_MTD.1.1 The TSF shall restrict the ability to [selection: change_default, query, modify, delete, clear, [assignment: other operations]] the [FCR Authorised User’s authentication data] to [assignment: the authorised identified roles]. FMT_MTD.1/ AUTHORİZED MANUFACTURER USER Management of TSF data Hierarchical to: No other components. Dependencies: FMT_SMR.1 Security roles FMT_SMF.1 Specification of Management Functions FMT_MTD.1.1 The TSF shall restrict the ability to [create] the [Authorized Manufacturer User’s authentication data] to [assignment: the authorised identified roles]nobody. 49 Application Note8: No authorised identified roles make the changes on Authorized Manufacturer User’s authentication data but TSM creates it. 6.1.6.4 FMT_SMF Specification of Management Functions FMT_SMF.1 Specification of Management Functions Hierarchical to: No other components. Dependencies: No dependencies. FMT_SMF.1.1 The TSF shall be capable of performing the following management functions: [Authorized Manufacturer User modifies IP: Port Information], [assignment: list of management functions to be provided by the TSF]. 6.1.6.5 FMT_SMR Security management roles FMT_SMR.2 Restrictions on security roles Hierarchical to: FMT_SMR.1 Security roles Dependencies: FIA_UID.1 Timing of identification FMT_SMR.2.1 The TSF shall maintain the roles:[FCR Authorised User,Authorised Manufacturer User] FMT_SMR.2.2 The TSF shall be able to associate users with roles. FMT_SMR.2.3 The TSF shall ensure that the conditions [Authorised Manufacturer User shall take action in maintenance works and FCR Authorised User take action in secure state works] are satisfied. 6.1.7 Class FPT Protection of the TSF 6.1.7.1 FPT_FLS Fail secure FPT_FLS.1 Failure with preservation of secure state Hierarchical to: No other components. Dependencies: No dependencies. FPT_FLS.1.1 The TSF shall preserve a secure state when the following types of failures occur:[except maintenance mode events that specified in Section3.1.3] 50 6.1.7.2 FPT_PHP TSF physical protection FPT_PHP.2 Notification of physical attack Hierarchical to: FPT_PHP.1 Passive detection of physical attack Dependencies: FMT_MOF.1 Management of security functions behaviour FPT_PHP.2.1 The TSF shall provide unambiguous detection of physical tampering that might compromise the TSF. FPT_PHP.2.2 The TSF shall provide the capability to determine whether physical tampering with the TSF's devices or TSF's elements has occurred. FPT_PHP.2.3 For [the devices/elements for which active detection is required in Technical Guidance Document [5]], the TSF shall monitor the devices and elements and notify [all users]when physical tampering with the TSF's devices or TSF's elements has occurred. 6.1.7.3 FPT_RCV Trusted recovery FPT_RCV.1 Manual recovery Hierarchical to: No other components. Dependencies: AGD_OPE.1 Operational user guidance FPT_RCV.1.1 After[maintenance mode events which expressed in section 3.1.3 occur] the TSF shall enter a maintenance mode where the ability to return to a secure state is provided. FPT_RCV.4 Function recovery Hierarchical to: No other components. Dependencies: No dependencies. FPT_RCV.4.1 The TSF shall ensure that [except maintenance mode events that specified in section 3.1.3] have the property that the function either completes successfully, or for the indicated failure scenarios, recovers to a consistent and secure state. 6.1.7.4 FPT_STM Time stamps FPT_STM.1 Reliable time stamps Hierarchical to: No other components. Dependencies: No dependencies. FPT_STM.1.1 The TSF shall be able to provide reliable time stamps. 51 6.1.7.5 FPT_TDC Inter-TSF TSF data consistency FPT_TDC.1/TSM Inter-TSF basic TSF data consistency Hierarchical to: No other components. Dependencies: No dependencies. FPT_TDC.1.1 The TSF shall provide the capability to consistently interpret [CheckSum] when shared between the TSF and another trusted IT product. FPT_TDC.1.2 The TSF shall use [Communication with secure messaging according to PRA Messaging Protocol Document [6]] when interpreting the TSF data from another trusted IT product. FPT_TDC.1/EFT-POS/SMART PINPAD Inter-TSF basic TSF data consistency Hierarchical to: No other components. Dependencies: No dependencies. FPT_TDC.1.1 The TSF shall provide the capability to consistently interpret [CheckSum] when shared between the TSF and another trusted IT product. FPT_TDC.1.2 The TSF shall use [Communication with secure messaging according to External Device Communication Protocol Document[7]] when interpreting the TSF data from another trusted IT product. 6.1.7.6 FPT_TEE Testing of external entities FPT_TEE.1/EXT Testing of external entities Hierarchical to: No other components. Dependencies: No dependencies. FPT_TEE.1.1 The TSF shall run a suite of tests [during initialstart-up and during fiscal transactions] to check the fulfillment of [proper working of external entities]. FPT_TEE.1.2 If the test fails, the TSF shall [generate an audit event according to PRA Messaging Protocol Document [6]]. Application Note9: External entities areERU, Fiscal Memory, Daily Memory, Mesh Cover and Electronic Seal. FPT_TEE.1/TIME Testing of external entities Hierarchical to: No other components. 52 Dependencies: No dependencies. FPT_TEE.1.1 The TSF shall run a suite of tests [during time synchronization with NTP] to check the fulfillment of [accuracy of time information]. FPT_TEE.1.2 If the test fails, the TSF shall [assignment: action(s)]. 6.1.8 Class FTP Trusted Patch/Channels 6.1.8.1 FTP_ITC Inter-TSF trusted channel FTP_ITC.1/TSM Inter-TSF trusted channel Hierarchical to: No other components. Dependencies: No dependencies. FTP_ITC.1.1 The TSF shall provide a communication channel between itself and another trusted IT product 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 The TSF shall permit [theTSF] to initiate communication via the trusted channel. FTP_ITC.1.3 The TSF shall initiate communication via the trusted channel for [sending user data (sales, event data and TRMK) to PRA-IS; receiveing user data (TREK and TRAK) from PRA-IS and receiveing user data (FCR parameters and exchange rates) from TSM]. FTP_ITC.1/EFT-POS/SMART PINPAD Inter-TSF trusted channel Hierarchical to: No other components. Dependencies: No dependencies. FTP_ITC.1.1 The TSF shall provide a communication channel between itself and another trusted IT product 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 The TSF shall permit [theTSF] to initiate communication via the trusted channel. 53 FTP_ITC.1.3 The TSF shall initiate communication via the trusted channel for[sending amount information to EFT-POS/SMART PINPAD and receiving outcome of the operation from EFT-POS/SMART PINPAD]. 54 6.2 Security Assurance Requirements for the TOE The assurance requirements for the evaluation of the TOE and for its development and operating environment are chosen as the predefined assurance package EAL2. 6.3 Security Requirements Rationale 6.3.1 Security Functional Requirements Rationale Table 4 provides an overview for security functional requirements coverage and also giving an evidence for sufficiency and necessity of the SFRs chosen. Table 4Coverage of security objectives by SFRs for TOE O.AccessControl O.Event O.Integrity O.Authentication O.Function O.Transfer FAU_GEN.1 Audit data generation X FAU_SAR.1 Audit review X FAU_STG.1 Protected audit trail storage X FAU_STG.4 Prevention of audit data loss X FCO_NRO.2 Enforced proof of origin X FCS_CKM.1/TRMK Cryptographic key generation X FCS_CKM.2 Cryptographic key distribution X FCS_CKM.1/TLS_AES Cryptographic key generation X FCS_CKM.1/TLS_HMAC Cryptographic key generation X FCS_CKM.1/DHE-KEY Cryptographic key generation X 55 FCS_CKM.1/EXT-DEV KENC Cryptographic key generation X FCS_CKM.1/EXT-DEV KHMAC Cryptographic key generation X FCS_CKM.4 Cryptographic key destruction X FCS_COP.1/TREK Cryptographic operation X FCS_COP.1/TRAK Cryptographic operation X FCS_COP.1/ENC-DEC Cryptographic operation X FCS_COP.1/INT-AUTH Cryptographic operation X FCS_COP.1/HASHING Cryptographic operation X FCS_COP.1/TRMK-DEC Cryptographic operation X FCS_COP.1/PUB-ENC Cryptographic operation X FCS_COP.1/SIGN-VER Cryptographic operation X FCS_COP.1/EXT-DEV KENC Cryptographic operation X FCS_COP.1/EXT-DEV KHMAC Cryptographic operation X FCS_COP.1/EXT-DEV KEYEXCHANGE Cryptographic operation X FDP_ACC.1 Subset access control X FDP_ACF.1 Security attribute based access control X FDP_ETC.2/TSM Export of user data with security attributes X FDP_ETC.2 /EFT- POS/SMART PINPAD Export of user data with security attributes X FDP_IFC.1/TSMCOMMU NICATION Subset information flow control X 56 FDP_IFC.1/EFT- POS/SMART PINPADCOMMUNICATI ON Subset information flow control X FDP_IFF.1/TSMCOMMUN ICATION Simple security attributes X FDP_IFF.1/EFT- POS/SMART PINPADCOMMUNICATI ON Simple security attributes X FDP_ITC.2/TSM Import of user data with security attributes X FDP_ITC.2/EFT- POS/SMART PINPAD Import of user data with security attributes X FDP_SDI.2/ MEMORY Storeddata integrity monitoring and action X FDP_SDI.2/DAILY and PRMTR Stored data integrity monitoring and action X FIA_AFL.1/MANUFACTU RER Authentication failure handling X FIA_AFL.1/AUTHORISED Authentication failure handling X FIA_UAU.1 Timing of authentication X FIA_UAU.4 Single-use authentication mechanisms X FIA_UID.1 Timing of identification X FMT_MOF.1 Management of security functions behaviour X FMT_MSA.1/PRIVILEGES Management of security attributes X 57 FMT_MSA.1/IP:PORTINF O Management of security attributes X FMT_MSA.1/FILE NAME and INFO-LABEL Management of security attributes X FMT_MSA.1/EFT- POS/SMART PINPAD SOURCE PORT INFO Management of security attributes X FMT_MSA.1/EFT- POS/SMART PINPAD LABEL INFO Management of security attributes X FMT_MSA.3/USERS and SYSTEMS Static attribute initialisation X X FMT_MSA.3/EFT- POS/SMART PINPAD Static attribute initialisation X FMT_MTD.1/FCR AUTHORİSED USER Management of TSF data X X FMT_MTD.1/ AUTHORİZED MANUFACTURER USER Management of TSF data X FMT_SMF.1 Specification of Management Functions X FMT_SMR.2 Restrictions on security roles X FPT_FLS.1 Failure with preservation of secure state X FPT_PHP.2 Notification of physical attack X X FPT_RCV.1 Manual recovery X FPT_RCV.4 Function recovery X FPT_STM.1 Reliable time stamps X 58 FPT_TDC.1/TSM Inter-TSF basic TSF data consistency X FPT_TDC.1/ EFT- POS/SMART PINPAD Inter-TSF basic TSF data consistency X FPT_TEE.1/EXT Testing of external entities X FPT_TEE.1/TIME Testing of external entities X FTP_ITC.1/TSM Inter-TSF trusted channel X FTP_ITC.1/EFT- POS/SMART PINPAD Inter-TSF trusted channel X 59 A detailed justification of required for suitability of the security functional requirements to achieve the security objectives is given in Table 5 Table 5Suitability of the SFRs Security Objective SecurityFunctionalRequirement O.AccessControl FDP_ACC.1 Provides security functional policy for functions and data FDP_ACF.1 Defines security attributes for functions and data FAU_SAR.1 Allowsusers to readaudit records FMT_MSA.1/PRIVILEGES Provides the functions to restrict the ability to modify the security attributes (privileges) to nobody. FMT_MSA.3/USERS and SYSTEMS Provides the functions to provide restrictive default values for security attributes that are used to enforce the SFP and allows nobody to specify alternative initial values to override the default values when an object or information is created. FMT_SMF.1 Descripe the specification of management functions beingallowed to use in maintenance mode and secure state mode. FMT_SMR.2 Maintainsthe roles with restrictions FMT_MTD.1/ FCR AUTHORİSED USER Provides authorised processing of FCR Authorised User’s authentication data FMT_MTD.1/ AUTHORİZED MANUFACTURER USER Provides authorised processing of FCR Manufacturer User’s authentication data O.Event FAU_GEN.1 Generates correct audit events FPT_STM.1 Provides accurate time for loggingevents 60 O.Integrity FAU_STG.1 Protects stored audit data integrity from unauthorised deletion FAU_STG.4 Prevents loss of auditdata loss FPT_PHP.2 Generation of audit event detection of physical tampering FDP_SDI.2/MEMORY Monitors user data stored for integrity errors FDP_SDI.2/DAILY and PRMTR Monitors user data stored forintegrity errors FPT_TDC.1/TSM Provides the capability to consistently interpret TSF data (checksum) FPT_TDC.1/EFT-POS/SMART PINPAD Provides the capability to consistently interpret TSF data (checksum) O.Authentication FIA_AFL.1/MANUFACTURER Detects and records authentication failure events for Autharised Manufacturer User FIA_AFL.1/AUTHORISED Detects and records authentication failure events for FCR Authorised User FIA_UAU.1 Defines user authentication before allowing to do fiscal sales FIA_UAU.4 Provides single use authentication mechanism for Autharised Manufacturer User FIA_UID.1 Defines user identification before allowing to do fiscal sales FMT_MTD.1/ FCR AUTHORİSED USER Provides authorised processing of FCR Authorised User’s authentication data FMT_MTD.1/ AUTHORİZED MANUFACTURER USER Provides processing of Authorised Manufacturer User’s authentication data FCS_COP.1/HASHING Provides authentication operation for PRA-IS and 61 TSM O.Function FMT_MOF.1 Restricts the ability to enable the functions to nobody and, thus, prevents an unintended access to data in the operational phase. FPT_FLS.1 Failure types which makes new generation cash register fiscal application software continue working in secure state FPT_RCV.1 Provides new generation cash register fiscal application software start working in maintenance mode in failure. (has ability to switch to the secure state manually) FPT_RCV.4 Provides new generation cash register fiscal application software start working in maintenance mode in failure. (has ability to switch to the secure state automatically with functions) FPT_TEE.1/EXT Provides test for IT environment for functioning accurately FPT_TEE.1/TIME Provides test for time information for accuracy O.Transfer FCS_CKM.1/TLS_AES Generates session keys for communication between FCR-PRA-IS and FCR– TSM FCS_CKM.1/TRMK Generates session keys for communication between FCR-PRA-IS and FCR– TSM 62 FCS_CKM.2 Provides cryptographic key distribution to genarate keys FCS_CKM.1/TLS_HMAC Generates session keys for communication between FCR-PRA-IS and FCR– TSM FMT_MSA.1/ EFT-POS/SMART PINPAD LABEL INFO Provides the functions to restrict the ability to modify the security attribute (EFT- POS/SMART PINPAD label) to nobody FMT_MSA.1/FILE NAME and INFO- LABEL Provides the functions to restrict the abilityto modify the security attribute (file name) to nobody FMT_MSA.1/ IP:PORT INFO Provides the functions to restrict the ability to modify the security attribute (IP/Port) to Authorized Manufacturer User FMT_MSA.1/EFT-POS/SMART PINPAD SOURCE PORT INFO Provides the functions to restrict the ability to modify the security attribute (EFT- POS/SMART PINPAD source port) to nobody FMT_MSA.3/USERS and SYSTEMS Provides the functions to provide restrictive default values for security attributes that are used to enforce the SFP and allows nobody to specify alternative initialvalues too verride the default values when an object or information is created FMT_MSA.3/EFT-POS/SMART PINPAD Provides the functions to provide permissive default values for security attributes that are used to enforce the SFP and allows nobody to specify alternative initial values to override the default values when an 63 object or information is created FCS_CKM.4 Destroys cryptographic keys in the TOE FCS_COP.1/ENC-DEC Provides the cryptographic operation for secure communication between PRA-IS and new generation cash register fiscal application software, and between TSM and new generation cash register fiscal application software FCS_COP.1/INT-AUTH Provides authentication and integrity protection for comminication between FCR-PRA-IS and FCR– TSM FCS_COP.1/TREK Provides the cryptographic operation for secure communication between PRA-IS and TOE FCS_COP.1/TRAK Provides authentication and integrity protection for comminication between PRA-IS and TOE FCS_COP.1/TRMK-DEC Provides the cryptographic operation for secure communication between PRA-IS and TOE FCS_COP.1/PUB-ENC Provides the cryptographic operation for secure communication between PRA-IS-TOE FCS_COP.1/SIGN-VER Provides non-repuduation for TREK and TRAK sharing between PRA-IS and TOE. FCS_COP.1/HASHING Provides the cryptographic operation (hashing) for communication with TSM and PRA-IS communication FPT_PHP.2 Generation of audit event detection of physical 64 tampering FCO_NRO.2 Generates evidence of origin of the data to be transferred to thePRA-IS FCS_CKM.1/DHE-KEY Generates private key for DHE key agreement FCS_COP.1/EXT-DEV KENC Provides symmetric encryption in order to establish secure communication with External Devices. FCS_COP.1/ EXT-DEV KHMAC Provides authentication and integrity protection for comminication with External Devices. FCS_CKM.1/EXT-DEV KENC Generates keys for communication between TOE and External Devices FCS_CKM.1/EXT-DEV KHMAC Generates keys for communication between TOE and External Devices FCS_COP.1/ EXT-DEV KEYEXCHANGE Provides agreementoperation with External Devices FDP_ETC.2/TSM Provides export of sales data and event data from the TOE to the PRA-IS using the information flow control SFP with TSM and PRA-IS FDP_ETC.2/EFT-POS/SMART PINPAD Provides export of amount information in sales data from the TOE to the EFT- POS/SMART PINPAD using the information flow control SFP with EFT- POS/SMART PINPAD Devices FDP_IFC.1/TSMCOMMUNICATION Provides information flow control policy for TSM and PRA-IS communication FDP_IFC.1/EFT-POS/SMART PINPADCOMMUNICATION Provides information flow control policy for EFT- POS/SMART PINPAD communication FDP_IFF.1/TSMCOMMUNICATION Provides information flow control policy rules for 65 TSM and PRA-IS communication FDP_IFF.1/EFT-POS/SMART PINPADCOMMUNICATION Provides information flow control policy rules for EFT-POS/SMART PINPAD communication FDT_ITC.2/TSM Provides protection of FCR Parameters confidentiality and integrity during import from TSM FDT_ITC.2/EFT-POS/SMART PINPAD Provides protection of confidentiality and integrity of outcome of the operation conducted by the EFT-POS/SMART PINPAD device and AES keys (KENC and KHMAC)during import from EFT-POS/SMART PINPAD device FTP_ITC.1/EFT-POS/SMART PINPAD Provides protection of data (confidentiality+integrity) during communication with EFT-POS/SMART PINPAD by the help of secure channel FTP_ITC.1/TSM Provides protection of sales data and event data (confidentiality+integrity) during communication with PRA-IS by the help of secure channel 66 6.3.2 Rationale for Security Functional Requirements dependencies Selected security functional requirements include related dependencies. Table 6 below provides a summary of the security functional requirements dependency analysis. Table 6Security Functional Requirements dependencies Dependencies: Included / not included FAU_GEN.1 FPT_STM.1 included FAU_SAR.1 FAU_GEN.1 included FAU_STG.1 FAU_GEN.1 included FAU_STG.4 FAU_STG.1 included FCO_NRO.2 FIA_UID.1 Non-repudiation of the origin satisfied for the event and sales data send from FCR not on behalf of each user but FCR itself. Requirement satisfied but the dependency is not fulfilled because of the operational requirement. FCS_CKM.1/TRMK FCS_CKM.2 or FCS_COP.1; FCS_CKM.4 FCS_CKM.2; FCS_COP.1TRMK- DEC; FCS_CKM.4 included FCS_CKM.2 [FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1]; FCS_CKM.4 FCS_CKM.1/TRMK; FCS_CKM.4 FCS_CKM.1/TLS_AES FCS_CKM.2 or FCS_COP.1; FCS_CKM.4 FCS_COP.1/ENC-DEC and FCS_CKM.4 included FCS_CKM.1/TLS_HMA C FCS_CKM.2 or FCS_COP.1; FCS_CKM.4 FCS_COP.1/INT-AUTH and FCS_CKM.4 included FCS_CKM.1/EXT-DEV KENC FCS_CKM.2 or FCS_COP.1; FCS_CKM.4 FCS_COP.1/EXT-DEV KENC and FCS_CKM.4 included . FCS_CKM.1/EXT-DEV KHMAC FCS_CKM.2 or FCS_COP.1; FCS_CKM.4 FCS_COP.1/ EXT-DEV KHMAC and FCS_CKM.4 included 67 FCS_CKM.4 FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 FCS_CKM.1(FCS_CKM.1/EXT- DEV KENC, FCS_CKM.1/EXT- DEV KHMAC, FCS_CKM.1/TLS_HMAC, FCS_CKM.1/TLS_AES, FCS_CKM.1/TRMK, FCS_CKM.1/DHE-KEY) included FCS_COP.1/TRAK FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 FDP_ITC.2/TSM and FCS_CKM.4 included FCS_COP.1/TREK FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 FDP_ITC.2/TSM and FCS_CKM.4 included FCS_COP.1/TRMK- DEC FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 FCS_CKM.1/TRMK; FCS_CKM.4 FCS_COP.1/PUB-ENC FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 According to PRA messaging protocol, there is no need to import key for this SFR. Key is imported during initialization. According to PRA mesaging protocol, PPRA and PTSM public key should not be deleted. Tamper system of the TOE protects keys from misuse, disclosure or modification. FCS_COP.1/SIGN-VER FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 According to PRA messaging protocol, there is no need to import key for this SFR. Key is imported during initialization. According to PRA messaging protocol, PPRA-SIGN public key should not be deleted. Tamper system of the TOE protects keys from misuse, disclosure or modification. FCS_COP.1/ENC-DEC FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 FCS_CKM.1/TLS_AES and FCS_CKM.4 included FCS_COP.1/INT-AUTH FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 FCS_CKM.1/TLS_HMAC and FCS_CKM.4 included 68 ;FCS_CKM.4 FCS_COP.1/HASHING FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 No need to include any dependencies because there is no need to use any key for HASHING FCS_CKM.1/DHE-KEY FCS_CKM.2 or FCS_COP.1; FCS_CKM.4 FCS_COP.1/ EXT-DEV KEYEXCHANGE and FCS_CKM.4 FCS_COP.1/EXT-DEV KENC FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 FCS_CKM.1/EXT-DEV KENC; FCS_CKM.4included FCS_COP.1/ EXT-DEV KHMAC FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 FCS_CKM.1/EXT-DEV KHMAC; FCS_CKM.4included FCS_COP.1/ EXT-DEV KEYEXCHANGE FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1 ;FCS_CKM.4 FCS_CKM.1/DHE- KEYandFCS_CKM.4 included FDP_ACC.1 FDP_ACF.1 included FDP_ACF.1 FDP_ACC.1; FMT_MSA.3 FDP_ACC.1; FMT_MSA.3/USERS and SYSTEMS included FDP_ETC.2/TSM FDP_ACC.1 or FDP_IFC.1 FDP_ACC.1; FDP_IFC.1/TSMCOMMUNICATI ON included FDP_ETC.2 /EFT- POS/SMART PINPAD FDP_ACC.1 or FDP_IFC.1 FDP_ACC.1; FDP_IFC.1/EFT-POS/SMART PINPADCOMMUNICATION included FDP_IFC.1/TSMCOMM UNICATION FDP_IFF.1 FDP_IFF.1/TSMCOMMUNICATI ON included FDP_IFC.1/EFT- POS/SMART PINPADCOMMUNICA TION FDP_IFF.1 FDP_IFF.1/EFT-POS/SMART PINPADCOMMUNICATION included FDP_IFF.1/TSMCOMM UNICATION FDP_IFC.1; FMT_MSA.3 FDP_IFC.1/TSMCOMMUNICATI ON; FMT_MSA.3/USERS and SYSTEMS included FDP_IFF.1/EFT- POS/SMART PINPADCOMMUNICA TION FDP_IFC.1; FMT_MSA.3 FDP_IFC.1/EFT-POS/SMART PINPADCOMMUNICATION; FMT_MSA.3/EFT-POS/SMART PINPADincluded 69 FDP_ITC.2/TSM FDP_ACC.1 or FDP_IFC.1 ; FTP_ITC.1 or FTP_TRP.1 ; FPT_TDC.1 FDP_IFC.1/TSMCOMMUNICATI ON; FTP_ITC.1/TSM; FPT_TDC.1/TSM included FDP_ITC.2/EFT- POS/SMART PINPAD FDP_ACC.1 or FDP_IFC.1 ; FTP_ITC.1 or FTP_TRP.1 ; FPT_TDC.1 FDP_IFC.1/EFT-POS/SMART PINPADCOMMUNICATION; FTP_ITC.1/EFT-POS/SMART PINPAD; FPT_TDC.1/EFT- POS/SMART PINPADincluded FDP_SDI.2/MEMORY No dependencies. - FDP_SDI.2/DAILY and PRMTR No dependencies. - FIA_AFL.1/MANUFAC TURER FIA_UAU.1 included FIA_AFL.1/AUTHORIS ED FIA_UAU.1 included FIA_UAU.1 FIA_UID.1 included FIA_UAU.4 No dependencies - FIA_UID.1 No dependencies - FMT_MOF.1 FMT_SMR.1; FMT_SMF.1 FMT_SMR.2 is hierarchical to FMT_SMR.1; FMT_SMF.1 FMT_MSA.1/PRIVILE GES FDP_ACC.1 or FDP_IFC.1 FDP_ACC.1 included FMT_MSA.1/ IP:PORTINFO FDP_ACC.1 or FDP_IFC.1 FDP_IFC.1/TSMCOMMUNICATI ON included FMT_MSA.1/FILE NAME and INFO- LABEL FDP_ACC.1 or FDP_IFC.1 FDP_IFC.1/TSMCOMMUNICATI ON included FMT_MSA.1/EFT- POS/SMART PINPAD SOURCE PORT INFO FDP_ACC.1 or FDP_IFC.1 FDP_IFC.1/EFT-POS/SMART PINPADCOMMUNICATION included FMT_MSA.1/ EFT- POS/SMART PINPAD LABEL INFO FDP_ACC.1 or FDP_IFC.1 FDP_IFC.1/EFT-POS/SMART PINPADCOMMUNICATION included FMT_MSA.3/USERS and SYSTEMS FMT_MSA.1 ; FMT_SMR.1 FMT_MSA.1 (FMT_MSA.1/PRIVILEGES, FMT_MSA.1/IP:PORTINFO and FMT_MSA.1/FILE NAME and INFO-LABEL) ; FMT_SMR.2 is hierarchical to 70 FMT_SMR.1 included FMT_MSA.3/EFT- POS/SMART PINPAD FMT_MSA.1 ; FMT_SMR.1 FMT_MSA.1/ EFT-POS/SMART PINPAD LABEL INFO ) ; FMT_SMR.2 is hierarchical to FMT_SMR.1 included FMT_MTD.1/ FCR AUTHORİSED USER FMT_SMR.1 ; FMT_SMF.1 FMT_SMR.2 is hierarchical to FMT_SMR.1 ; FMT_SMF.1 included FMT_MTD.1/ AUTHORİZED MANUFACTURER USER FMT_SMR.1 ; FMT_SMF.1 FMT_SMR.2 is hierarchical to FMT_SMR.1 ; FMT_SMF.1 included FMT_SMF.1 No dependencies. - FMT_SMR.2 FIA_UID.1 included FPT_FLS.1 No dependencies - FPT_PHP.2 FMT_MOF.1 included FPT_RCV.1 AGD_OPE.1 included (assurance component) FPT_RCV.4 No dependencies - FPT_STM.1 No dependencies - FPT_TDC.1/TSM No dependencies - FPT_TDC.1/EFT- POS/SMART PINPAD No dependencies - FPT_TEE.1/EXT No dependencies - FPT_TEE.1/TIME No dependencies - FTP_ITC.1/TSM No dependencies - FTP_ITC.1/EFT- POS/SMART PINPAD No dependencies - 71 6.3.3 Security Assurance Requirements Rationale The current assurance package was chosen based on the pre-defined assurance packet EAL2. EAL2 is chosen because the threats that were chosen are consistent with an attacker of basic attack potential. 6.3.4 Security Requirements - Internal Consistency The following part of the security requirements rationale shows that the set of security requirements for the TOE consisting of the security functional requirements (SFRs) and the security assurance requirements (SARs) together forms an internally consistent whole. The dependency analysis inTable 6 shows that the basis for internal consistency between all defined functional requirements is satisfied. The assurance package EAL2 is a pre-defined set of internally consistent assurance requirements. The assurance requirements are internally consistent as all (additional) dependencies are satisfied and no inconsistency appears. Inconsistency between functional and assurance requirements could only arise, if there are functional-assurance dependencies being not met. So, there are no inconsistencies between the goals of these two groups of security requirements. 72 7. ACRONYMS AES : Advanced Encryption Standard CC : Common Criteria CCMB : Common Criteria Management Board DEMA : Differential Electromagnetic Analysis DES : Data Encryption Standard DFA : Differential Fault Analysis DPA : Differential Power Analysis EAL : Evaluation Assurance Level (defined in CC) EFTPOS : Electronic Funds Transfer at Point of Sale EMV : Europay, MasterCard and Visa ERU : Electronic Recording Unit FCR : Fiscal Cash Register GPRS : General Packet Radio Service GPS : Global Positioning System IT : Information Technology ITU : International Telecommunication Union OSP : Organizational Security Policy PP : Protection Profile PKI : Public Key Infrastructure PRA : Presidency ofRevenue Administration PRA-IS : Presidency ofRevenue Administration Information Systems SAR : Security Assurance Requirements SEMA : Simple Electromagnetic Analysis SFR : Security Functional Requirements SHA : Secure Hash Algorithm 73 SPA : Simple Power Analysis SSL : Secure Sockets Layer TOE : Target of Evaluation TSF : TOE Security Functionality (defined in CC) TSE : Turkish Standards Institute TSM : Trusted Service Manager VAT : Value Added Tax 74 8. BIBLIOGRAPHY Common Criteria [1] Common Criteria for Information Technology Security Evaluation, Part 1: Introduction and General Model; CCMB-2012-09-001, Version 3.1, Revision 4, September 2012 [2] Common Criteria for Information Technology Security Evaluation, Part 2: Security Functional Components; CCMB-2012-09-002, Version 3.1, Revision 4, September 2012 [3] Common Criteria for Information Technology Security Evaluation, Part 3: Security Assurance Requirements; CCMB-2012-09-003, Version 3.1, Revision 4, September 2012 [4] Common Methodology for Information Technology Security Evaluation, Evaluation Methodology; CCMB-2012-09-004, Version 3.1, Revision 4, September 2012 New Generation Cash Register Directives [5] Technical Guidance (TK1) Document, current version [6] PRA Messaging Protocol (for TK1) Document, current version [7] External Device Communication Protocol Document, current version