PREMIER MINISTRE
Secretariat General for National Defence
Central Directorate for Information Systems Security
Certification Report 2007/07
ST19NA18C secure microcontroller
Paris, 28th
of March 2007
Courtesy Translation
Certification report 2007/07 ST19NA18C secure microcontroller
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Warning
This report is designed to provide sponsors with a document enabling them to assess the
security level of a product under the conditions of use and operation defined in this report for
the evaluated version. It is also designed to provide the potential purchaser of the product with
the conditions under which he may operate or use the product so as to meet the conditions of
use for which the product has been evaluated and certified; that is why this certification report
must be read alongside the evaluated user and administration guidance, as well as with the
product security target, which presents threats, environmental assumptions and the supposed
conditions of use so that the user can judge for himself whether the product meets his needs in
terms of security objectives.
Certification does not, however, constitute a recommendation product from DCSSI (Central
Directorate for Information Systems Security), and does not guarantee that the certified
product is totally free of all exploitable vulnerabilities.
Any correspondence about this report has to be addressed to:
Secrétariat Général de la Défense Nationale
Direction Centrale de la Sécurité des Systèmes d'Information
Centre de certification
51, boulevard de la Tour Maubourg
75700 PARIS cedex 07 SP
France
certification.dcssi@sgdn.pm.gouv.fr
Reproduction of this document without any change or cut is authorised.
ST19NA18C secure microcontroller Certification report 2007/07
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Certification report reference
2007/07
Product name
ST19NA18C secure microcontroller
Product reference
ST19NA18 revision C microcontroller
(dedicated software ZSC, maskset K7L0A)
Protection profile conformity
PP/9806 – PP BSI-PP-002-2001
Evaluation criteria and version
Common Criteria version 2.3
compliant with ISO 15408:2005
Evaluation level
EAL 5 augmented
ALC_DVS.2, AVA_MSU.3, AVA_VLA.4
Developer
STMicroelectronics
Smartcard IC division, ZI de Rousset, BP2, 13106 Rousset Cedex, France
Sponsor
STMicroelectronics
Smartcard IC division, ZI de Rousset, BP2, 13106 Rousset Cedex, France
Evaluation facility
Serma Technologies
30 avenue Gustave Eiffel, 33608 Pessac, France
Phone: +33 (0)5 57 26 08 64, email : m.dus@serma.com
Recognition arrangements
CCRA
The product is recognised at EAL4 level.
SOG-IS
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Introduction
The Certification
Security certification for information technology products and systems is governed by decree
number 2002-535 dated April, 18th 2002, and published in the "Journal Officiel de la
République Française". This decree stipulates that:
• The central information system security department draws up certification reports.
These reports indicate the features of the proposed security targets. They may include
any warnings that the authors feel the need to mention for security reasons. They may
or may not be transmitted to third parties or made public, as the principals desire
(article 7).
• The certificates issued by the Prime Minister certify that the copies of the products or
systems submitted for evaluation fulfil the specified security features. They also
certify that the evaluations have been carried out in compliance with applicable rules
and standards, with the required degrees of skill and impartiality (article 8).
The procedures are available on the Internet site www.ssi.gouv.fr.
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Content
1. THE PRODUCT........................................................................................................................... 6
1.1. PRESENTATION OF THE PRODUCT........................................................................................... 6
1.2. EVALUATED PRODUCT DESCRIPTION ..................................................................................... 6
1.2.1. Product identification.................................................................................................... 6
1.2.2. Security services............................................................................................................ 6
1.2.3. Architecture................................................................................................................... 7
1.2.4. Life cycle ....................................................................................................................... 8
1.2.5. Life cycle ....................................................................................................................... 8
1.2.6. Evaluated configuration................................................................................................ 9
2. THE EVALUATION.................................................................................................................. 10
2.1. EVALUATION REFERENTIAL ................................................................................................. 10
2.2. EVALUATION WORK ............................................................................................................. 10
2.3. CRYPTOGRAPHIC MECHANISMS ROBUSTNESS ANALYSIS..................................................... 10
2.4. RANDOM NUMBER GENERATOR ANALYSIS .......................................................................... 10
3. CERTIFICATION...................................................................................................................... 11
3.1. CONCLUSION........................................................................................................................ 11
3.2. RESTRICTIONS...................................................................................................................... 11
3.3. RECOGNITION OF THE CERTIFICATE..................................................................................... 11
3.3.1. European recognition (SOG-IS).................................................................................. 11
3.3.2. International common criteria recognition (CCRA)................................................... 12
ANNEX 1. EVALUATION LEVEL OF THE PRODUCT.......................................................... 13
ANNEX 2. EVALUATED PRODUCT REFERENCES .............................................................. 14
ANNEX 3. CERTIFICATION REFERENCES ........................................................................... 16
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1. The product
1.1. Presentation of the product
The evaluated product is the ST19NA18 (revision C) microcontroller developed by
STMicroelectronics. This product includes a software test (“Autotest”) and a software library
(system management, crypto library), stored in ROM memory.
The microcontroller aims to host one or several software applications and can be embedded in
a plastic support to create a Smartcard with multiple possible usages (secure identity
documents, banking, health card, pay-TV or transport applications…) depending on the
Embedded Software applications. However, only the microcontroller is evaluated. The
software applications are not in the scope of this evaluation.
1.2. Evaluated product description
The security target [ST] defines the evaluated product, its evaluated security functionalities
and its operation environment.
This security target is compliant to both [PP9806] and [PP0002] protection profiles.
1.2.1. Product identification
The configuration list [CONF] identifies the product’s constituent elements.
The certified version of the product can be identified by the following elements that can be
checked with a microscope:
- Die identification (maskset): K7L0A;
- Dedicated software identification: ZSC;
- Embedded software identification: this reference depends on the application embedded
in ROM memory;
- Manufacturing site identification: STMicroelectronics_4 (Rousset).
1.2.2. Security services
The product provides mainly the following security services:
- Hardware initialisation & TOE attribute initialisation;
- TOE configuration switching and control;
- TOE logical integrity (including memory integrity);
- Test of the TOE;
- Administrators authentication;
- Storage and Function Access Firewall;
- Physical tampering security function (including attack & fault detection mechanisms);
- Reaction to security events;
- Unobservability;
- Symmetric Key Cryptography Support;
- Asymmetric Key Cryptography Support;
- Random Number Generator.
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1.2.3. Architecture
The ST19NA18C microcontroller is made up of:
- A Hardware part:
o An 8-bit processing unit;
o Memories: EEPROM (18KB with integrity control, for program and data
storage), ROM (128KB for user, 32KB for dedicated software : autotest and
cryptographic libraries) and RAM (4KB) ;
o Security Modules: Memory Access Control Logic (MACL), clock generator,
security administrator, power management, memories integrity control, fault
detection mechanisms;
o Functional Modules: 8-bits timers, I/O management in contact mode (IART
ISO 7816-3), True Random Number Generators, DES and RSA co-processing
units.
- A dedicated software is embedded in ROM which comprises:
o Microcontroller test capabilities («Autotest ») ;
o System and Hardware/Software interface management capabilities
o Cryptographic libraries: DES (E-DES implementation), AES (E-AES
implementation) and RSA which are included in the product security target.
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1.2.4. Life cycle
1.2.5. Life cycle
The product’s life cycle is organised as follow:
Phase 1
Phase 2
Phase 3
Phase 4
Phase 5
Phase 6
Phase 7
Smartcard embedded
software development
Product
construction
IC design with its dedicated
software
Smartcard IC database
construction
IC photomask fabrication
IC testing and prepersonalisation
IC manufacturing
Testing
IC packaging
Testing
Smartcard product finishing process
Testing
Personalisation
Smartcard product end-
usage
Poduct
usage
End of life process
Légende
Trusted delivery and
verification procedures
Delivery done within
secure environment
Phases
supposed
to
be
secured
STM Rousset
STM Singapore
STM Rousset
Dai Nippon Printing,
Saitama-k
STM Rousset
STM Rousset
Phase 1
Phase 2
Phase 3
Phase 4
Phase 5
Phase 6
Phase 7
Smartcard embedded
software development
Product
construction
IC design with its dedicated
software
Smartcard IC database
construction
IC photomask fabrication
IC testing and prepersonalisation
IC manufacturing
Testing
IC packaging
Testing
Smartcard product finishing process
Testing
Personalisation
Smartcard product end-
usage
Poduct
usage
End of life process
Légende
Trusted delivery and
verification procedures
Delivery done within
secure environment
Légende
Trusted delivery and
verification procedures
Delivery done within
secure environment
Phases
supposed
to
be
secured
STM Rousset
STM Singapore
STM Rousset
Dai Nippon Printing,
Saitama-k
STM Rousset
STM Rousset
Figure 1 – Life cycle
The product is designed, prepared and tested by:
STMicroelectronics
Smartcard IC division
ZI de Rousset, BP2
13106 Rousset Cedex
France
A part of the design is realised by:
STMicroelectronics
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5A Serangoon North Avenue 5,
Singapore 554574
Singapour
The photo masks of the product are manufactured by:
DAI NIPPON PRINTING CO., LTD
2-2-1, Fukuoka, kamifukuoka-shi,
Saitama-Ken, 356-8507
Japan
The product can be in one of its three possible configurations:
- «Test» configuration: product configuration at the end of developer IC manufacturing.
The product is tested with a part of the Dedicated Software (called “Autotest”) within
the secure developer premises. Pre-personalization data can be loaded in the
EEPROM. The product configuration is changed to "Issuer" before delivery to the
next user, and the part cannot be reversed to the «test» configuration.
- «Issuer» configuration: product configuration when delivered to users involved in IC
packaging and personalization. Limited tests are still possible with the Dedicated
Software (System Rom operating system). Personalization data can be loaded in the
EEPROM.
The product configuration is changed to its final "User" configuration when delivered
to the end user (the part cannot be reversed to the «Issuer» configuration).
- «User» configuration: Final product configuration. The developer test functionalities
are unavailable. The Dedicated Software only provides the power-on reset sequence
and routine libraries (mainly cryptographic services). After the power-on reset
sequence, the product functionalities are driven exclusively by the Embedded
Software.
1.2.6. Evaluated configuration
This certification report presents the evaluation work related to the product and the dedicated
software library identified in §1.1. Any other embedded application, such as embedded
applications intended specifically for the sake of the evaluation is not part of the evaluation
perimeter.
Referring to the life-cycle, the evaluated product is the product that comes out the
manufacturing, test and pre-personalization phase (phase 3).
For the evaluation needs, the product ST19NA18C was provided to the ITSEF with a
dedicated test software (Card Manager) in a mode known as « open1
».
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2. The evaluation
2.1. Evaluation referential
The evaluation has been performed in compliance with Common Criteria version 2.3 [CC]
and with the Common Evaluation Methodology [CEM].
For assurance components above EAL4 level, the evaluation facility own evaluation methods
consistent with [AIS34], validated by DCSSI have been used.
In order to meet the specificities of smart cards, the [CCIC] and [CCAP] guides have been
applied.
2.2. Evaluation work
The evaluation relies on the evaluation results of the ST19NR66B product certified in 2006
under the reference 2006/27 (cf. [2006/27]).
The evaluation technical report [ETR], delivered to DCSSI the 19th
of March 2007, provides
details on the work performed by the evaluation facility and assesses that all evaluation tasks
are “pass”.
2.3. Cryptographic mechanisms robustness analysis
The robustness of cryptographic mechanisms has not been analysed by DCSSI.
2.4. Random number generator analysis
The evaluation facility has evaluated the random number generator with the [AIS31] and
[FIPS 140] methodology.
The generator reaches the class “P2 – SOF-high” according to [AIS31] and Level 31
according to [FIPS 140].
1
Only the [FIPS 140-2] subset related to random number generators has been evaluated and only regarding the
statistical tests specified in the standard.
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3. Certification
3.1. Conclusion
The evaluation identified in chapter 2 and described in the evaluation technical report [ETR],
was carried out according to the current rules and standards, with the required competency
and impartiality by a licensed evaluation facility. All the work performed permits the release
of a certificate in conformance with the decree 2002-535.
This certificate testifies that the product “ST19NA18C secure microcontroller” submitted for
evaluation fulfils the security features specified in its security target [ST] for the evaluation
level EAL 5 augmented.
3.2. Restrictions
This certificate only applies on the product specified in chapter 1.2 of this certification report.
This certificate provides a resistance assessment of the ST19NA18C product to a set of
attacks which remains generic due to the missing of any specific embedded application.
Therefore, the security of a final product based on the evaluated microcontroller would only
be assessed through the final product evaluation, which could be performed on the basis of the
current evaluation results.
The user of the certified product shall respect the operational environmental security
objectives summarized specified in the security target [ST] and shall respect the
recommendations in the guidance [GUIDES], in particular:
- Security procedures must be applied during the product delivery to the users in order
to maintain the confidentiality and integrity of the product and the related
manufacturing and test data (prevent any copy, modification, theft, unauthorized
manipulation or usage);
- The communication between a product developed based on the secured
microcontroller and other products must be secured (in terms of protocols and
procedures);
- The system (work station, terminal, communication…) must guaranty the
confidentiality and the integrity of the sensitive data, which are stored or processed.
3.3. Recognition of the certificate
3.3.1. European recognition (SOG-IS)
This certificate is issued in accordance with the provisions of the SOG-IS agreement [SOG-
IS].
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The European Recognition Agreement made by SOG-IS in 1999 allows recognition from
Signatory States of the agreement1
, of ITSEC and Common Criteria certificates. The
European recognition is applicable up to ITSEC E6 and CC EAL7 levels. The certificates that
are recognized in the agreement scope are released with the following marking:
3.3.2. International common criteria recognition (CCRA)
This certificate is released in accordance with the provisions of the CCRA [CC RA].
The Common Criteria Recognition Arrangement allows the recognition, by signatory
countries2
, of the Common Criteria certificates. The mutual recognition is applicable up to the
assurance components of CC EAL4 level and also to ALC_FLR family. The certificates that
are recognized in the agreement scope are released with the following marking:
1 The signatory countries of the SOG-IS agreement are: Finland, France, Germany, Greece, Italy, The
Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
2 The signatory countries of the CCRA arrangement are: Australia, Austria, Canada, Czech Republic, Denmark,
Finland, France, Germany, Greece, Hungary, India, Israel, Italy, Japan, The Netherlands, New-Zealand, Norway,
Singapore, Spain, Sweden, Turkey, United Kingdom and United States.
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Annex 1. Evaluation level of the product
Components by assurance level Assurance level of the product
Class Family
EAL
1
EAL
2
EAL
3
EAL
4
EAL
5
EAL
6
EAL
7
EAL
5+
Name of the component
ACM_AUT 1 1 2 2 1 Partial CM automation
ACM_CAP 1 2 3 4 4 5 5 4
Configuration support and
acceptance procedures
ACM
Configuration
management
ACM_SCP 1 2 3 3 3 3
Development tools CM
coverage
ADO_DEL 1 1 2 2 2 3 2 Detection of modification
ADO
Delivery and
operation ADO_IGS 1 1 1 1 1 1 1 1
Installation, generation and
start-up procedures
ADV_FSP 1 1 1 2 3 3 4 3
Semiformal functional
specification
ADV_HLD 1 2 2 3 4 5 3 Semiformal high-level design
ADV_IMP 1 2 3 3 2 Implementation of the TSF
ADV_INT 1 2 3 1 Modularity
ADV_LLD 1 1 2 2 1 Descriptive low-level design
ADV_RCR 1 1 1 1 2 2 3 2
Semiformal correspondence
demonstration
ADV
Development
ADV_SPM 1 3 3 3 3
Formal TOE security policy
model
AGD_ADM 1 1 1 1 1 1 1 1 Administrator guidance
AGD
Guidance AGD_USR 1 1 1 1 1 1 1 1 User guidance
ALC_DVS 1 1 1 2 2 2
Sufficiency of security
measures
ALC_FLR
ALC_LCD 1 2 2 3 2 Standardised life-cycle model
ALC
Life-cycle
support
ALC_TAT 1 2 3 3 2
Compliance with
implementation standards
ATE_COV 1 2 2 2 3 3 2 Analysis of coverage
ATE_DPT 1 1 2 2 3 2 Testing: low-level design
ATE_FUN 1 1 1 1 2 2 1 Functional testing
ATE
Tests
ATE_IND 1 2 2 2 2 2 3 2 Independent testing – sample
AVA_CCA 1 2 2 1 Covert channel analysis
AVA_MSU 1 2 2 3 3 3
Analysis and testing of
insecure states
AVA_SOF 1 1 1 1 1 1 1
Strength of TOE security
function evaluation
AVA
Vulnerability
assessment
AVA_VLA 1 1 2 3 4 4 4 Highly resistant
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Annex 2. Evaluated product references
[2006/27] Certification report 2006/27 – ST19NR66B secure microcontroller, 8
December 2006, SGDN/DCSSI
[ST] Reference security target for the evaluation:
- ST19NA18 Security Target,
Reference: SMD_ST19NA18_ST_06_001 V01.00
STMicroelectronics
For the needs of publication, the following security target has been
provided and validated in the evaluation:
- ST19NA18 Security Target – Public version,
Reference: SMD_ST19NA18_ST_07_001 V01.01
STMicroelectronics
[ETR] Evaluation technical report :
- Evaluation Technical Report – ST19NA18C – (EAL5+
evaluation),
Reference: YQM_ETR_NA18C_v1.2
Serma Technologies
For the needs of composite evaluation with this microcontroller a
technical report for composition has been validated:
- ETR Lite for Composition, ST19NA18C (EAL5+ evaluation)
Reference: YQUEM_ETR lite ST19NA18C_v1.1
Serma Technologies
[CONF] Product configuration list:
- Configuration List ST19NA18C PRODUCT,
Reference: SCP_ST19NA18C_CFGL_06_001 V01.03
STMicroelectronics
List of the delivered materials by STMicroelectronics:
- Yquem evaluation –Documentation report (ST19NA18C),
Reference: SMD_NA18_DR_06_001 V01.04
STMicroelectronics
[GUIDES] The product user guidance documentation is the following:
- ST19NA18 Smartcard MCU with MAP, IART, High Speed
CPU Clock & 18 KBytes High Density EEPROM,
Reference: DS_19NA18/0702 Rev. 9
STMicroelectronics
- ST19NA18 - Security Application Manual,
Reference: APM_19NA18_SECU/0702 Rev. 1
STMicroelectronics
- ST19W - System ROM –Issuer configuration - user manual,
Reference: UM_19W_SR_I/0306VP2
STMicroelectronics
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- ST19W - System ROM –Issuer configuration - user manual
addendum,
Reference: AD_UM_19W_SR_I/0308V1.1
STMicroelectronics
- ST19W - System ROM –Issuer configuration - user manual
addendum 2,
Reference: AD2_UM_19W_SR_I/0702V1.0
STMicroelectronics
- ST19N System Library V2 User Manual,
Reference: Um_19N_SysLibV2/0610 Rev 3
STMicroelectronics
- ST19X, ST19W and 19N EDES Library User Manual,
Reference: UM_19X_EDESLIB/0605 Rev 2
STMicroelectronics
- ST19N - Fast Cryptographic Library FastLIB4 – User Manual,
Reference: UM_19N_FASTLIB4/0605 Rev 3
STMicroelectronics
- Information Note,
Reference: SE_IN_06_004 V1.01
STMicroelectronics
- ST19W and ST19N AES Library - User Manual,
Reference: UM_19W_19N_AES/0610 Rev 2
STMicroelectronics
- AIS31 Compliant Random Numbers on ST19N Products - User
Manual,
Reference: UM_19N_AIS31_CRN/0702 V1
STMicroelectronics
[PP/9806] Protection Profile Smart Card Integrated Circuit Version 2.0, September
1998. Certified under the reference PP/9806.
[PP0002] Protection Profile, Smart card IC Platform Protection Profile Version
1.0 July 2001. Certified under the reference BSI-PP-0002-2001.
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Annex 3. Certification references
Decree number 2002-535 dated 18th
April 2002 related to the security evaluations and
certifications for information technology products and systems.
[CER/P/01] Procedure CER/P/01 - Certification of the security provided by IT
products and systems, DCSSI.
[CC] Common Criteria for Information Technology Security Evaluation:
Part 1: Introduction and general model,
August 2005, version 2.3, ref CCMB-2005-08-001;
Part 2: Security functional requirements,
August 2005, version 2.3, ref CCMB-2005-08-002;
Part 3: Security assurance requirements,
August 2005, version 2.3, ref CCMB-2005-08-003.
The content of Common Criteria version 2.3 is identical to the
international ISO/IEC 15408:2005.
[CEM] Common Methodology for Information Technology Security
Evaluation: Evaluation Methodology,
August 2005, version 2.3, ref CCMB-2005-08-004.
The content of CEM version 2.3 is identical to the international ISO/IEC
18045:2005.
[CC IC] Common Criteria Supporting Document - Mandatory Technical
Document - The Application of CC to Integrated Circuits, version 2.0,
April 2006.
[CC AP] Common Criteria Supporting Document - Mandatory Technical
Document - Application of attack potential to smart-cards, version 2.1,
April 2006.
[CC RA] Arrangement on the Recognition of Common criteria certificates in the
field of information Technology Security, May 2000.
[SOG-IS] «Mutual Recognition Agreement of Information Technology Security
Evaluation Certificates», version 2.0, April 1999, Management
Committee of Agreement Group.
[AIS 34] Application Notes and Interpretation of the Scheme - Evaluation
Methodology for CC Assurance Classes for EAL5+, AIS34, Version
1.00, 01 June 2004
[AIS31] Functionnality classes and evaluation methodology for physical random
number generator, AIS31 version 1, 25/09/2001,
Bundesamt für Sicherheit in der Informationstechnik
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[FIPS 140] Security Requirements for Cryptographic Modules
Reference: FIPS PUB-140-2:1999
NIST