STMicroelectronics ST33G1M2A and ST33G1M2M C01 including optional cryptographic library NesLib Security Target for composition Common Criteria for IT security evaluation SMD_ST33G1M2AM_ST_19_002 Rev C01.3 October 2019 www.st.com BLANK ST33G1M2AM C01 Security Target for composition Contents SMD_ST33G1M2AM_ST_19_002 3/78 Contents 1 Introduction (ASE_INT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.1 Security Target reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.2 TOE reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.3 Context . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.4 TOE identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 1.5 TOE overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 1.6 TOE description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.6.1 TOE hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.6.2 TOE software description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1.7 TOE life cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 1.8 TOE environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 1.8.1 TOE Development Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 1.8.2 TOE production environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1.8.3 TOE operational environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2 Conformance claims (ASE_CCL, ASE_ECD) . . . . . . . . . . . . . . . . . . . . 18 2.1 Common Criteria conformance claims . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.2 PP Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.2.1 PP Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.2.2 PP Additions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.2.3 PP Claims rationale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3 Security problem definition (ASE_SPD) . . . . . . . . . . . . . . . . . . . . . . . . 20 3.1 Description of assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.2 Threats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.3 Organisational security policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.4 Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4 Security objectives (ASE_OBJ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.1 Security objectives for the TOE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.2 Security objectives for the environment . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.3 Security objectives rationale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.3.1 TOE threat "Memory Access Violation" . . . . . . . . . . . . . . . . . . . . . . . . . 30 Contents ST33G1M2AM C01 Security Target for composition 4/78 SMD_ST33G1M2AM_ST_19_002 4.3.2 TOE threat "Application code confidentiality" . . . . . . . . . . . . . . . . . . . . . 30 4.3.3 TOE threat "Application data confidentiality" . . . . . . . . . . . . . . . . . . . . . 30 4.3.4 TOE threat "Application code integrity" . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.3.5 TOE threat "Application data integrity" . . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.3.6 Organisational security policy "Additional Specific Security Functionality" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.3.7 Organisational security policy "Controlled loading of the Security IC Embedded Software" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.3.8 Organisational security policy "Treatment of user data" . . . . . . . . . . . . 31 5 Security requirements (ASE_REQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.1 Security functional requirements for the TOE . . . . . . . . . . . . . . . . . . . . . 32 5.1.1 Security Functional Requirements from the Protection Profile . . . . . . . 34 5.1.2 Additional Security Functional Requirements for the cryptographic services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.1.3 Additional Security Functional Requirements for the memories protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 5.1.4 Additional Security Functional Requirements related to the possible availability of loading capabilities in phases 4 to 6 of the TOE life-cycle 42 5.1.5 Additional Security Functional Requirements related to the Application Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 5.2 TOE security assurance requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 5.3 Refinement of the security assurance requirements . . . . . . . . . . . . . . . . 45 5.3.1 Refinement regarding functional specification (ADV_FSP) . . . . . . . . . . 46 5.3.2 Refinement regarding test coverage (ATE_COV) . . . . . . . . . . . . . . . . . 47 5.4 Security Requirements rationale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 5.4.1 Rationale for the Security Functional Requirements . . . . . . . . . . . . . . . 47 5.4.2 Additional security objectives are suitably addressed . . . . . . . . . . . . . . 50 5.4.3 Additional security requirements are consistent . . . . . . . . . . . . . . . . . . 51 5.4.4 Dependencies of Security Functional Requirements . . . . . . . . . . . . . . . 52 5.4.5 Rationale for the Assurance Requirements . . . . . . . . . . . . . . . . . . . . . . 55 6 TOE summary specification (ASE_TSS) . . . . . . . . . . . . . . . . . . . . . . . . 56 6.1 Limited fault tolerance (FRU_FLT.2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 6.2 Failure with preservation of secure state (FPT_FLS.1) . . . . . . . . . . . . . . 56 6.3 Limited capabilities (FMT_LIM.1) / Test . . . . . . . . . . . . . . . . . . . . . . . . . . 56 6.4 Limited capabilities (FMT_LIM.1) / Loader . . . . . . . . . . . . . . . . . . . . . . . . 56 6.5 Limited availability (FMT_LIM.2) / Test & (FMT_LIM.2) / Loader . . . . . . . 56 ST33G1M2AM C01 Security Target for composition Contents SMD_ST33G1M2AM_ST_19_002 5/78 6.6 Stored data confidentiality (FDP_SDC.1) . . . . . . . . . . . . . . . . . . . . . . . . . 57 6.7 Stored data integrity monitoring and action (FDP_SDI.2) . . . . . . . . . . . . 57 6.8 Audit storage (FAU_SAS.1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 6.9 Resistance to physical attack (FPT_PHP.3) . . . . . . . . . . . . . . . . . . . . . . . 57 6.10 Basic internal transfer protection (FDP_ITT.1), Basic internal TSF data transfer protection (FPT_ITT.1) & Subset information flow control (FDP_IFC.1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 6.11 Random number generation (FCS_RNG.1) . . . . . . . . . . . . . . . . . . . . . . . 58 6.12 Cryptographic operation: EDES operation (FCS_COP.1) / EDES . . . . . . 58 6.13 Cryptographic operation: AES operation (FCS_COP.1) / AES . . . . . . . . . 58 6.14 Cryptographic operation: RSA operation (FCS_COP.1) / RSA, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 6.15 Cryptographic operation: Elliptic Curves Cryptography operation (FCS_COP.1) / ECC, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 6.16 Cryptographic operation: SHA-1 & SHA-2 operation (FCS_COP.1) / SHA, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 6.17 Cryptographic operation: Keccak & SHA-3 operation (FCS_COP.1) / Keccak, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 6.18 Cryptographic operation: Keccak-p operation (FCS_COP.1) / Keccak-p, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.19 Cryptographic operation: Diffie-Hellman operation (FCS_COP.1) / Diffie- Hellman, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.20 Cryptographic operation: DRBG operation (FCS_COP.1) / DRBG, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.21 Cryptographic key generation: Prime generation (FCS_CKM.1) / Prime_generation, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.22 Cryptographic key generation: RSA key generation (FCS_CKM.1) / RSA_key_generation, only if NesLib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.23 Static attribute initialisation (FMT_MSA.3) / Memories . . . . . . . . . . . . . . . 62 6.24 Management of security attributes (FMT_MSA.1) / Memories & Specification of management functions (FMT_SMF.1) / Memories . . . . . . . . . . . . . . . . 62 6.25 Complete access control (FDP_ACC.2) / Memories & Security attribute based access control (FDP_ACF.1) / Memories . . . . . . . . . . . . . . . . . . . 62 6.26 Static attribute initialisation (FMT_MSA.3) / Loader . . . . . . . . . . . . . . . . . 62 6.27 Management of security attributes (FMT_MSA.1) / Loader & Specification of management functions (FMT_SMF.1) / Loader . . . . . . . . . . . . . . . . . . . . 62 Contents ST33G1M2AM C01 Security Target for composition 6/78 SMD_ST33G1M2AM_ST_19_002 6.28 Subset access control (FDP_ACC.1) / Loader, Security attribute based access control (FDP_ACF.1) / Loader, Security roles (FMT_SMR.1) / Loader & Timing of identification (FIA_UID.1) / Loader . . . . . . . . . . . . . . . . . . . . 62 6.29 Import of user data without security attributes (FDP_ITC.1) / Loader . . . 63 6.30 Subset access control (FDP_ACC.1) / APPLI_FWL & Security attribute based access control (FDP_ACF.1) / APPLI_FWL . . . . . . . . . . . . . . . . . 63 6.31 Static attribute initialisation (FMT_MSA.3) / APPLI_FWL . . . . . . . . . . . . . . 63 7 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 8 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Appendix A Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 A.1 Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 A.2 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 ST33G1M2AM C01 Security Target for composition List of tables SMD_ST33G1M2AM_ST_19_002 7/78 List of tables Table 1. TOE components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 2. Derivative devices configuration possibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 3. Composite product life cycle phases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 4. Summary of security aspects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 5. Summary of security objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Table 6. Security Objectives versus Assumptions, Threats or Policies . . . . . . . . . . . . . . . . . . . . . . 29 Table 7. Summary of functional security requirements for the TOE . . . . . . . . . . . . . . . . . . . . . . . . . 32 Table 8. FCS_COP.1 iterations (cryptographic operations) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Table 9. FCS_CKM.1 iterations (cryptographic key generation). . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Table 10. TOE security assurance requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Table 11. Impact of EAL5 selection on BSI-CC-PP-0084-2014 refinements . . . . . . . . . . . . . . . . . . . 46 Table 12. Security Requirements versus Security Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Table 13. Dependencies of security functional requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Table 14. TOE components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Table 15. Guidance documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Table 16. Sites list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Table 17. Common Criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Table 18. Protection Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Table 19. Other standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Table 20. List of abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 List of figures ST33G1M2AM C01 Security Target for composition 8/78 SMD_ST33G1M2AM_ST_19_002 List of figures Figure 1. ST33G1M2AM C01 platform block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 October 2019 SMD_ST33G1M2AM_ST_19_002 Rev C01.3 9/78 ST33G1M2AM C01 platform Security Target for composition Common Criteria for IT security evaluation 1 Introduction (ASE_INT) 1.1 Security Target reference 1 Document identification: ST33G1M2A and ST33G1M2M C01, including optional cryptographic library NesLib - SECURITY TARGET FOR COMPOSITION. 2 Version number: Rev C01.3, issued in October 2019. 3 Registration: registered at ST Microelectronics under number SMD_ST33G1M2AM_ST_19_002. 1.2 TOE reference 4 This document presents the Security Target (ST) of the ST33G1M2AM C01 (ST33G1M2A and ST33G1M2M) Security Integrated Circuit (IC), designed on the ST33G platform of STMicroelectronics, with firmware version 1.3.2 and optional cryptographic library NesLib 6.3.4. 5 The precise reference of the Target of Evaluation (TOE) is given in Section 1.4: TOE identification and the security IC features are given in Section 1.6: TOE description. 6 A glossary of terms and abbreviations used in this document is given in Appendix A: Glossary. www.st.com ST33G1M2AM C01 Security Target for composition 10/78 SMD_ST33G1M2AM_ST_19_002 1.3 Context 7 The Target of Evaluation (TOE) referred to in Section 1.4: TOE identification, is evaluated under the French IT Security Evaluation and Certification Scheme and is developed by the Secure Microcontrollers Division of STMicroelectronics (ST). 8 The assurance level of the performed Common Criteria (CC) IT Security Evaluation is EAL5 augmented by ALC_DVS.2 and AVA_VAN.5. 9 The intent of this Security Target is to specify the Security Functional Requirements (SFRs) and Security Assurance Requirements (SARs) applicable to the TOE security ICs, and to summarise their chosen TSF services and assurance measures. 10 This ST claims to be an instantiation of the "Eurosmart - Security IC Platform Protection Profile with Augmentation Packages" (PP) registered and certified under the reference BSI- CC-PP-0084-2014 in the German IT Security Evaluation and Certification Scheme, with the following augmentations: • Addition #1: “Support of Cipher Schemes” from AUG • Addition #4: “Area based Memory Access Control” from AUG • Additions specific to this Security Target. The original text of this PP is typeset as indicated here, its augmentations from AUG as indicated here, when they are reproduced in this document. This ST also instantiates the following package from the above mentioned PP: • Loader dedicated for usage in secured environment only. 11 Extensions introduced in this ST to the SFRs of the Protection Profile (PP) are exclusively drawn from the Common Criteria part 2 standard SFRs. 12 This ST makes various refinements to the above mentioned PP and AUG. They are all properly identified in the text typeset as indicated here. The original text of the PP is repeated as scarcely as possible in this document for reading convenience. All PP identifiers have been however prefixed by their respective origin label: BSI for BSI-CC-PP- 0084-2014, AUG1 for Addition #1 of AUG and AUG4 for Addition #4 of AUG. ST33G1M2AM C01 Security Target for composition SMD_ST33G1M2AM_ST_19_002 11/78 1.4 TOE identification 13 The Target of Evaluation (TOE) is the ST33G1M2AM C01 platform. 14 “ST33G1M2AM C01” completely identifies the TOE including its components listed in Table 1: TOE components, its guidance documentation detailed in Table 15: Guidance documentation, and its development and production sites indicated in Table 16: Sites list. 15 C01 is the version of the evaluated platform. Any change in the TOE components, the guidance documentation and the list of sites leads to a new version of the evaluated platform, thus a new TOE. 16 The IC maskset name is the product hardware identification. The IC version is updated for any change in hardware (i.e. part of the layers of the maskset) or in the OST software. 17 All along the product life, the marking on the die, a set of accessible registers and a set of specific instructions allow the customer to check the product information, providing the identification elements, as listed in Table 1: TOE components, and the configuration elements as detailed in the Data Sheet, referenced in Table 15: Guidance documentation. 1.5 TOE overview 18 The TOE is a serial access Smartcard IC designed for secure mobile applications, based on the most recent generation of ARM® processors for embedded secure systems. Its SecurCore® SC300™ 32-bit RISC core is built on the Cortex™ M3 core with additional security features to help to protect against advanced forms of attacks. 19 The TOE offers a high-speed User Flash memory, an internally generated clock, an MPU, an internal true random number generator (TRNG) and hardware accelerators for advanced cryptographic functions. 20 Different derivative devices may be configured depending on the customer needs: • either by ST during the manufacturing or packaging process, • or by the customer during the packaging, or composite product integration, or personnalisation process. 21 They all share the same hardware design and the same maskset (denoted by the Master identification number). The Master identification number is unique for all product configurations. 22 The configuration of the derivative devices can impact the available NVM memory size, and the operational temperature range, as detailed here below: Table 1. TOE components IC Maskset name IC version Master identification number (1) 1. Part of the product information. Firmware version OST version Optional NesLib crypto library version K8H0A(2) 2. This maskset K8H0A rev G corresponds to product line K8M0. G 0061h 1.3.2 2.2 6.3.4 ST33G1M2AM C01 Security Target for composition 12/78 SMD_ST33G1M2AM_ST_19_002 23 All combinations of different features values are possible and covered by this certification. All possible configurations can vary under a unique IC, and without impact on security. 24 The Master identification number is unique for all product configurations. Each derivative device has a specific Child product identification number, also part of the product information, and specified in the Data Sheet and in the Firmware User Manual, referenced in Table 15. 25 The rest of this document applies to all possible configurations of the TOE, with or without NesLib, except when a restriction is mentioned. For easier reading, the restrictions are typeset as indicated here. 26 In a few words, the ST33G1M2AM C01, offers a unique combination of high performances and very powerful features for high level security: • Die integrity, • Monitoring of environmental parameters, • Protection mechanisms against faults, • AIS20/AIS31 class PTG.2 compliant True Random Number Generator, • Memory Protection Unit, • ISO/IEC 13239 CRC calculation block, • Hardware Security Enhanced DES accelerator, • AES accelerator (HW-AES), • Library Protection Unit, • Next Step Cryptography accelerator (NESCRYPT), • optional cryptographic library. 1.6 TOE description 1.6.1 TOE hardware description 27 The TOE features hardware accelerators for advanced cryptographic functions, with built-in countermeasures against side channel attacks. The AES (Advanced Encryption Standard) accelerator provides a high-performance implementation of AES-128, AES-192 and AES-256 algorithms. It can operate in Electronic CodeBook (ECB) or Cipher Block Chaining (CBC) modes. 28 The 3-key triple DES(a) accelerator (EDES+) supports efficiently the Triple Data Encryption Standard (TDES [2]), enabling Electronic Code Book (ECB) and Cipher Block Chaining (CBC) modes, and DES computation. Table 2. Derivative devices configuration possibilities Features Possible values NVM size Selectable by 128 Kbytes granularity from 1280 Kbytes to 384 Kbytes Operational temperature range See Data Sheet, referenced in Table 15: Guidance documentation a. Note that DES and triple DES with two keys are no longer recommended as encryption functions. Hence, Security IC Embedded Software may need to use triple DES with three keys to achieve a suitable strength. ST33G1M2AM C01 Security Target for composition SMD_ST33G1M2AM_ST_19_002 13/78 Note that a triple DES can be performed by a triple DES computation or by 3 single DES computations. 29 The NESCRYPT crypto-processor allows fast and secure implementation of the most popular public key cryptosystems with a high level of performance ([7], [12], [15],[16], [17], [18]). 30 As randomness is a key stone in many applications, the ST33G1M2AM C01 features a highly reliable True Random Number Generator (TRNG), compliant with PTG.2 Class of AIS20/AIS31 [1] and directly accessible thru dedicated registers. This device includes the ARM® SecurCore® SC300™ memory protection unit (MPU), which enables the user to define its own region organization with specific protection and access permissions. The MPU can be used to enforce various protection models, ranging from a basic code dump prevention model up to a full application confinement model. 31 The TOE offers 3 communication channels to the external world: a serial communication interface fully compatible with the ISO/IEC 7816-3 standard, a single-wire protocol (SWP) interface for communication with a near-field communication (NFC) router in SIM/NFC applications, and an alternative and exclusive SPI Slave interface for communication in non- SIM applications. 32 The detailed features of this TOE are described in the Data Sheet and in the Cortex SC300 Technical Reference Manual, referenced in Table 15. 33 Figure 1 provides an overview of the ST33G1M2AM C01 platform. Figure 1. ST33G1M2AM C01 platform block diagram ST33G1M2AM C01 Security Target for composition 14/78 SMD_ST33G1M2AM_ST_19_002 1.6.2 TOE software description 34 The OST ROM contains a Dedicated Software which provides full test capabilities (operating system for test, called "OST"), not accessible by the Security IC Embedded Software (ES), after TOE delivery. 35 The System ROM and ST NVM of the TOE contain a Dedicated Software which provides a very reduced set of commands for final test (operating system for final test, called "FTOS"), not intended for the Security IC Embedded Software (ES) usage, and not available in User configuration. 36 The System ROM and ST NVM of the TOE contain a Dedicated Support Software called Secure Flash Loader, enabling to securely and efficiently download the Security IC Embedded Software (ES) into the NVM. It also allows the evaluator to load software into the TOE for test purpose. The Secure Flash Loader is not available in User configuration. 37 The System ROM and ST NVM of the TOE contain a Dedicated Support Software, which provides low-level functions (called Flash Drivers), enabling the Security IC Embedded Software (ES) to modify and manage the NVM contents. The Flash Drivers are available all through the product life-cycle. 38 The TOE optionally comprises a specific application in User NVM: this applicative Embedded Software is a cryptographic library called NesLib. NesLib is a cutting edge cryptographic library in terms of security and performance. NesLib is embedded by the ES developer in his applicative code. NesLib is a cryptographic toolbox supporting the most common standards and protocols: • an asymmetric key cryptographic support module, supporting secure modular arithmetic with large integers, with specialized functions for Rivest, Shamir & Adleman Standard cryptographic algorithm (RSA [17]), and Diffie-Hellman [23], • an asymmetric key cryptographic support module that provides very efficient basic functions to build up protocols using Elliptic Curves Cryptography on prime fields GF(p) with elliptic curves in short Weierstrass form [15], and provides support for ECDH key agreement [21] and ECDSA generation and verification [5]. • a module for supporting elliptic curve cryptography on Edwards curve 25519, in particular ed25519 signature generation, verification and point decompression [26]. • a cryptographic support module that provides hash functions (SHA-1(b) , SHA-2 [4]), SHA-3, Keccak and a toolbox for cryptography based on Keccak-p, the permutation underlying SHA-3 [25], • a symmetric key cryptographic support module whose base algorithm is the Data Encryption Standard cryptographic algorithm (DES) [2], • a symmetric key cryptographic support module whose base algorithm is the Advanced Encryption Standard cryptographic algorithm (AES) [6], • support for Deterministic Random Bit Generators [19], • prime number generation and RSA key pairs generation [3]. 39 The Security IC Embedded Software (ES) is in User NVM. b. Note that SHA-1 is no longer recommended as a cryptographic function. Hence, Security IC Embedded Software may need to use another SHA to achieve a suitable strength. ST33G1M2AM C01 Security Target for composition SMD_ST33G1M2AM_ST_19_002 15/78 The ES is not part of the TOE and is out of scope of the evaluation, except NesLib when it is embedded. 40 The user guidance documentation, part of the TOE, consists of: • the product Data Sheet and die description, • the product family Security Guidance, • the AIS31 user manuals, • the Cortex M3 SC300 Technical Reference Manuals, • the Firmware user manual, • the Flash loader installation guide, • optionally the NesLib user manual. 41 The complete list of guidance documents is detailed in Table 15. 1.7 TOE life cycle 42 This Security Target is fully conform to the claimed PP. In the following, just a summary and some useful explanations are given. For complete details on the TOE life cycle, please refer to the Eurosmart - Security IC Platform Protection Profile with Augmentation Packages (BSI-CC-PP-0084-2014), section 1.2.3. 43 The composite product life cycle is decomposed into 7 phases. Each of these phases has the very same boundaries as those defined in the claimed protection profile. 44 The life cycle phases are summarized in Table 3. 45 The sites potentially involved in the TOE life cycle are listed in Table 16. 46 The limit of the evaluation corresponds to phases 2, 3 and optionally 4, including the delivery and verification procedures of phase 1, and the TOE delivery either to the IC packaging manufacturer or to the composite product integrator; procedures corresponding to phases 1, 5, 6 and 7 are outside the scope of this evaluation. 47 In the following, the term "Composite product manufacturing" is uniquely used to indicate phases 1, optionally 4, 5 and 6 all together. This ST also uses the term "Composite product manufacturer" which includes all roles responsible of the TOE during phases 1, optionally 4, 5 and 6. 48 The TOE is delivered after Phase 3 in form of wafers or after Phase 4 in packaged form, depending on the customer’s order. 49 In the following, the term "TOE delivery" is uniquely used to indicate: • after Phase 3 (or before Phase 4) if the TOE is delivered in form of wafers or sawn wafers (dice) or • after Phase 4 (or before Phase 5) if the TOE is delivered in form of packaged products. 50 The TOE is delivered in Admin (aka Issuer) or User configuration. ST33G1M2AM C01 Security Target for composition 16/78 SMD_ST33G1M2AM_ST_19_002 1.8 TOE environment 51 Considering the TOE, three types of environments are defined: • Development environment corresponding to phase 2, • Production environment corresponding to phase 3 and optionally 4, • Operational environment, including phase 1 and from phase 4 or 5 to phase 7. 1.8.1 TOE Development Environment 52 To ensure security, the environment in which the development takes place is secured with controllable accesses having traceability. Furthermore, all authorised personnel involved fully understand the importance and the strict implementation of defined security procedures. 53 The development begins with the TOE's specification. All parties in contact with sensitive information are required to abide by Non-Disclosure Agreements. 54 Design and development of the IC then follows, together with the dedicated and engineering software and tools development. The engineers use secure computer systems (preventing unauthorised access) to make their developments, simulations, verifications and generation of the TOE's databases. Sensitive documents, files and tools, databases on tapes, and printed circuit layout information are stored in appropriate locked cupboards/safe. Of paramount importance also is the disposal of unwanted data (complete electronic erasures) and documents (e.g. shredding). 55 The development centres possibly involved in the development of the TOE are denoted by the activity “DEV” in Table 16. Table 3. Composite product life cycle phases Phase Name Description 1 Security IC embedded software development security IC embedded software development specification of IC pre-personalization requirements 2 IC development IC design IC dedicated software development 3 IC manufacturing and testing integration and photomask fabrication IC manufacturing IC testing IC pre-personalisation 4 IC packaging security IC packaging (and testing) pre-personalisation if necessary 5 Security IC product finishing process composite product finishing process composite product testing 6 Security IC personalisation composite product personalisation composite product testing 7 Security IC end usage composite product usage by its issuers and consumers ST33G1M2AM C01 Security Target for composition SMD_ST33G1M2AM_ST_19_002 17/78 56 Reticules and photomasks are generated from the verified IC databases; the former are used in the silicon Wafer-fab processing. As reticules and photomasks are generated off- site, they are transported and worked on in a secure environment. During the transfer of sensitive data electronically, procedures are established to ensure that the data arrive only at the destination and are not accessible at intermediate stages (e.g. stored on a buffer server where system administrators make backup copies). 57 The authorized sub-contractors potentially involved in the TOE mask manufacturing are denoted by the activity “MASK” in Table 16. 1.8.2 TOE production environment 58 As high volumes of product commonly go through such environments, adequate control procedures are necessary to account for all product at all stages of production. 59 Production starts within the Wafer-fab; here the silicon wafers undergo the diffusion processing. Computer tracking at wafer level throughout the process is commonplace. The wafers are then taken into the test area. Testing and pre-personalization of each TOE occurs to assure conformance with the device specification. 60 The authorized front-end plant possibly involved in the manufacturing of the TOE are denoted by the activity “FE” in Table 16. 61 The authorized EWS plant potentially involved in the testing of the TOE are denoted by the activity “EWS” in Table 16. 62 Wafers are then scribed and broken such as to separate the functional from the non- functional ICs. The latter is discarded in a controlled accountable manner. The good ICs are then packaged in phase 4, in a back-end plant. When testing, programming or deliveries are done offsite, ICs are transported and worked on in a secure environment with accountability and traceability of all (good and bad) products. 63 When the product is delivered after phase 4, the authorized back-end plants possibly involved in the packaging of the TOE are denoted by the activity “BE” in Table 16. 64 All sites denoted by the activity “WHS” in Table 16 can be involved for the logistics. 1.8.3 TOE operational environment 65 A TOE operational environment is the environment of phases 1, optionally 4, then 5 to 7. 66 At phases 1, 4, 5 and 6, the TOE operational environment is a controlled environment. 67 End-user environments (phase 7): composite products are used in a wide range of applications to assure authorised conditional access. Examples of such are pay-TV, banking cards, brand protection, portable communication SIM cards, health cards, transportation cards, access management, identity and passport cards. The end-user environment therefore covers a wide range of very different functions, thus making it difficult to avoid and monitor any abuse of the TOE. Conformance claims (ASE_CCL, ASE_ECD) ST33G1M2AM C01 Security Target for composition 18/78 SMD_ST33G1M2AM_ST_19_002 2 Conformance claims (ASE_CCL, ASE_ECD) 2.1 Common Criteria conformance claims 68 The ST33G1M2AM C01 platform Security Target claims to be conformant to the Common Criteria version 3.1 revision 5. 69 Furthermore it claims to be CC Part 2 (CCMB-2017-04-002 R5) extended and CC Part 3 (CCMB-2017-04-003 R5) conformant. 70 The extended Security Functional Requirements are those defined in the Eurosmart - Security IC Platform Protection Profile with Augmentation Packages (BSI-CC-PP-0084- 2014): • FCS_RNG Generation of random numbers, • FMT_LIM Limited capabilities and availability, • FAU_SAS Audit data storage, • FDP_SDC Stored data confidentiality. The reader can find their certified definitions in the text of the "BSI-CC-PP-0084-2014" Protection Profile. 71 The assurance level for the ST33G1M2AM C01 platform Security Target is EAL5 augmented by ALC_DVS.2 and AVA_VAN.5. 2.2 PP Claims 2.2.1 PP Reference 72 The ST33G1M2AM C01 platform Security Target claims strict conformance to the Eurosmart - Security IC Platform Protection Profile with Augmentation Packages (BSI-CC- PP-0084-2014), for the part of the TOE covered by this PP (Security IC), as required by this Protection Profile. 2.2.2 PP Additions 73 The main additions operated on the BSI-CC-PP-0084-2014 are: • Addition #4: “Area based Memory Access Control” from AUG, • Addition #1: “Support of Cipher Schemes” from AUG, • Specific additions for the Secure Flash Loader, • Specific additions for the LPU, • Refinement of assurance requirements. 74 All refinements are indicated with type setting text as indicated here, original text from the BSI-CC-PP-0084-2014 being typeset as indicated here. Text originating in AUG is typeset as indicated here. 75 The security environment additions relative to the PP are summarized in Table 4. 76 The additional security objectives relative to the PP are summarized in Table 5. 77 A simplified presentation of the TOE Security Policy (TSP) is added. ST33G1M2AM C01 Security Target for composition Conformance claims (ASE_CCL, ASE_ECD) SMD_ST33G1M2AM_ST_19_002 19/78 78 The additional SFRs for the TOE relative to the PP are summarized in Table 7. 79 The additional SARs relative to the PP are summarized in Table 10. 2.2.3 PP Claims rationale 80 The differences between this Security Target security objectives and requirements and those of BSI-CC-PP-0084-2014, to which conformance is claimed, have been identified and justified in Section 4 and in Section 5. They have been recalled in the previous section. 81 In the following, the statements of the security problem definition, the security objectives, and the security requirements are consistent with those of the BSI-CC-PP-0084-2014. 82 The security problem definition presented in Section 3, clearly shows the additions to the security problem statement of the PP. 83 The security objectives rationale presented in Section 4.3 clearly identifies modifications and additions made to the rationale presented in the BSI-CC-PP-0084-2014. 84 Similarly, the security requirements rationale presented in Section 5.4 has been updated with respect to the protection profile. 85 All PP requirements have been shown to be satisfied in the extended set of requirements whose completeness, consistency and soundness have been argued in the rationale sections of the present document. Security problem definition (ASE_SPD) ST33G1M2AM C01 Security Target for composition 20/78 SMD_ST33G1M2AM_ST_19_002 3 Security problem definition (ASE_SPD) 86 This section describes the security aspects of the environment in which the TOE is intended to be used and addresses the description of the assets to be protected, the threats, the organisational security policies and the assumptions. 87 Note that the origin of each security aspect is clearly identified in the prefix of its label. Most of these security aspects can therefore be easily found in the Eurosmart - Security IC Platform Protection Profile with Augmentation Packages (BSI-CC-PP-0084-2014), section 3. Only those originating in AUG, and the ones introduced in this Security Target, are detailed in the following sections. 88 A summary of all these security aspects and their respective conditions is provided in Table 4. Table 4. Summary of security aspects Label Title TOE threats BSI.T.Leak-Inherent Inherent Information Leakage BSI.T.Phys-Probing Physical Probing BSI.T.Malfunction Malfunction due to Environmental Stress BSI.T.Phys-Manipulation Physical Manipulation BSI.T.Leak-Forced Forced Information Leakage BSI.T.Abuse-Func Abuse of Functionality BSI.T.RND Deficiency of Random Numbers AUG4.T.Mem-Access Memory Access Violation T.Confid-Applic-Code Application code confidentiality T.Confid-Applic-Data Application data confidentiality T.Integ-Applic-Code Application code integrity T.Integ-Applic-Data Application data integrity OSPs BSI.P.Process-TOE Protection during TOE Development and Production BSI.P.Lim-Block-Loader Limiting and blocking the loader functionality AUG1.P.Add-Functions Additional Specific Security Functionality (Cipher Scheme Support) P.Controlled-ES-Loading Controlled loading of the Security IC Embedded Software P.Resp-Appl Treatment of user data Assumptions BSI.A.Process-Sec-IC Protection during Packaging, Finishing and Personalisation BSI.A.Resp-Appl Treatment of User Data ST33G1M2AM C01 Security Target for composition Security problem definition (ASE_SPD) SMD_ST33G1M2AM_ST_19_002 21/78 3.1 Description of assets 89 The assets (related to standard functionality) to be protected are • the User Data, • the Security IC Embedded Software, stored and in operation • the security services provided by the TOE for the Security IC Embedded Software. 90 The user (consumer) of the TOE places value upon the assets related to high-level security concerns: SC1 integrity of User Data and of the Security IC Embedded Software (while being executed/processed and while being stored in the TOE's memories), SC2 confidentiality of User Data and of the Security IC Embedded Software (while being processed and while being stored in the TOE's memories) SC3 correct operation of the security services provided by the TOE for the Security IC Embedded Software. 91 According to the Protection Profile there is the following high-level security concern related to security service: SC4 deficiency of random numbers. 92 To be able to protect these assets the TOE shall protect its security functionality. Therefore critical information about the TOE shall be protected. Critical information includes: • logical design data, physical design data, IC Dedicated Software, and configuration data, • Initialisation Data and Pre-personalisation Data, specific development aids, test and characterisation related data, material for software development support, and photomasks. Such information and the ability to perform manipulations assist in threatening the above assets. 93 The information and material produced and/or processed by the TOE manufacturer in the TOE development and production environment (Phases 2 up to TOE delivery) can be grouped as follows: • logical design data, • physical design data, • IC Dedicated Software, Security IC Embedded Software, Initialisation Data and pre- personalisation Data, • specific development aids, • test and characterisation related data, • material for software development support, and • photomasks and products in any form as long as they are generated, stored, or processed by the TOE manufacturer. 94 Application note: The TOE providing a functionality for Security IC Embedded Software secure loading into NVM, the ES is considered as User Data being stored in the TOE’s memories at this step, and the Protection Profile security concerns are extended accordingly. Security problem definition (ASE_SPD) ST33G1M2AM C01 Security Target for composition 22/78 SMD_ST33G1M2AM_ST_19_002 3.2 Threats 95 The threats are described in the BSI-CC-PP-0084-2014, section 3.2. Only those originating in AUG and those introduced in this Security Target are detailed in the following section. 96 BSI.T.Leak-Inherent Inherent Information Leakage BSI.T.Phys-Probing Physical Probing BSI.T.Malfunction Malfunction due to Environmental Stress BSI.T.Phys- Manipulation Physical Manipulation BSI.T.Leak-Forced Forced Information Leakage BSI.T.Abuse-Func Abuse of Functionality BSI.T.RND Deficiency of Random Numbers AUG4.T.Mem-Access Memory Access Violation: Parts of the Security IC Embedded Software may cause security violations by accidentally or deliberately accessing restricted data (which may include code). Any restrictions are defined by the security policy of the specific application context and must be implemented by the Security IC Embedded Software. Clarification: This threat does not address the proper definition and management of the security rules implemented by the Security IC Embedded Software, this being a software design and correctness issue. This threat addresses the reliability of the abstract machine targeted by the software implementation. To avert the threat, the set of access rules provided by this TOE should be undefeated if operated according to the provided guidance. The threat is not realized if the Security IC Embedded Software is designed or implemented to grant access to restricted information. It is realized if an implemented access denial is granted under unexpected conditions or if the execution machinery does not effectively control a controlled access. Here the attacker is expected to (i) take advantage of flaws in the design and/or the implementation of the TOE memory access rules (refer to BSI.T.Abuse-Func but for functions available after TOE delivery), (ii) introduce flaws by forcing operational conditions (refer to BSI.T.Malfunction) and/or by physical manipulation (refer to BSI.T.Phys-Manipulation). This attacker is expected to have a high level potential of attack. T.Confid-Applic-Code Application code confidentiality: A sensitive application code may need to be protected against unauthorized disclosure. This relates to attacks at runtime to gain read or compare access to memory area where the sensitive application executable code is stored. The attacker executes an application to disclose code belonging to the sensitive application. ST33G1M2AM C01 Security Target for composition Security problem definition (ASE_SPD) SMD_ST33G1M2AM_ST_19_002 23/78 3.3 Organisational security policies 97 The TOE provides specific security functionality that can be used by the Security IC Embedded Software. In the following specific security functionality is listed which is not derived from threats identified for the TOE’s environment because it can only be decided in the context of the Security IC application, against which threats the Security IC Embedded Software will use the specific security functionality. 98 ST applies the Protection policy during TOE Development and Production (BSI.P.Process- TOE) as specified below. 99 BSI.P.Lim-Block-Loader is dedicated to the Secure Flash Loader, and described in the BSI- CC-PP-0084-2014 package “Loader dedicated for usage in secured environment only”. 100 ST applies the Additional Specific Security Functionality policy (AUG1.P.Add-Functions) as specified below. 101 New Organisational Security Policies (OSPs) are defined here below: 102 P.Controlled-ES-Loading is related to the capability provided by the TOE to load Security IC Embedded Software into the NVM after TOE delivery, in a controlled manner, during composite product manufacturing. The use of this capability is optional, and depends on the customer’s production organization. 103 P.Resp-Appl is related to the ES that is part of the evaluation, and valid in case NesLib is embedded in the TOE. T.Confid-Applic-Data Application data confidentiality: A sensitive application data may need to be protected against unauthorized disclosure. This relates to attacks at runtime to gain read or compare access to the sensitive application data by another application. For example, the attacker executes an application that tries to read data belonging to the sensitive application. T.Integ-Applic-Code Application code integrity: A sensitive application code may need to be protected against unauthorized modification. This relates to attacks at runtime to gain write access to memory area where the sensitive application executable code is stored. The attacker executes an application that tries to alter (part of) the sensitive application code. T.Integ-Applic-Data Application data integrity: A sensitive application data may need to be protected against unauthorized modification. This relates to attacks at runtime to gain write access to the sensitive application data by another application. The attacker executes an application that tries to alter (part of) the sensitive application data. Security problem definition (ASE_SPD) ST33G1M2AM C01 Security Target for composition 24/78 SMD_ST33G1M2AM_ST_19_002 BSI.P.Process-TOE Identification during TOE Development and Production: An accurate identification is established for the TOE. This requires that each instantiation of the TOE carries this unique identification. BSI.P.Lim-Block-Loader Limiting and blocking the loader functionality: The composite manufacturer uses the Loader for loading of Security IC Embedded Software, user data of the Composite Product or IC Dedicated Support Software in charge of the IC Manufacturer. He limits the capability and blocks the availability of the Loader in order to protect stored data from disclosure and manipulation. AUG1.P.Add-Functions Additional Specific Security Functionality: The TOE shall provide the following specific security functionality to the Security IC Embedded Software: – Triple Data Encryption Standard (TDES), – Advanced Encryption Standard (AES), – Elliptic Curves Cryptography on GF(p), if NesLib is embedded, – Secure Hashing (SHA-1, SHA-224, SHA-256, SHA-384, SHA-512), if NesLib is embedded, – Rivest-Shamir-Adleman (RSA), if NesLib is embedded, – Deterministic Random Bit Generator (DRBG), if NesLib is embedded, – Keccak, if NesLib is embedded, – Keccak-p, if NesLib is embedded, – Diffie-Hellman, if NesLib is embedded, – Prime Number Generation, if NesLib is embedded. Note that DES and triple DES with two keys are no longer recommended as encryption functions. Hence, Security IC Embedded Software may need to use triple DES with three keys to achieve a suitable strength. Note that SHA-1 is no longer recommended as a cryptographic function. Hence, Security IC Embedded Software may need to use another SHA to achieve a suitable strength. P.Controlled-ES-Loading Controlled loading of the Security IC Embedded Software: The TOE shall provide the capability to import the Security IC Embedded Software into the NVM, in a controlled manner, either before TOE delivery, under ST authority, either after TOE delivery, under the composite product manufacturer authority. This capability is not available in User configuration. ST33G1M2AM C01 Security Target for composition Security problem definition (ASE_SPD) SMD_ST33G1M2AM_ST_19_002 25/78 3.4 Assumptions 104 The following assumptions are described in the BSI-CC-PP-0084-2014, section 3.4. P.Resp-Appl Treatment of user data: The Security IC Embedded Software, part of the TOE, treats user data according to the assumption A.Resp-Appl defined in BSI- CC-PP-0084-2014. BSI.A.Process-Sec-IC Protection during Packaging, Finishing and Personalisation BSI.A.Resp-Appl Treatment of User Data of the Composite TOE Security objectives (ASE_OBJ) ST33G1M2AM C01 Security Target for composition 26/78 SMD_ST33G1M2AM_ST_19_002 4 Security objectives (ASE_OBJ) 105 The security objectives of the TOE cover principally the following aspects: • integrity and confidentiality of assets, • protection of the TOE and associated documentation during development and production phases, • provide random numbers, • provide cryptographic support and access control functionality. 106 A summary of all security objectives is provided in Table 5. 107 Note that the origin of each objective is clearly identified in the prefix of its label. Most of these security aspects can therefore be easily found in the BSI-CC-PP-0084-2014, sections 4.1 and 7.3. Only those originating in AUG, and the ones introduced in this Security Target, are detailed in the following sections. Table 5. Summary of security objectives Label Title TOE BSI.O.Leak-Inherent Protection against Inherent Information Leakage BSI.O.Phys-Probing Protection against Physical Probing BSI.O.Malfunction Protection against Malfunctions BSI.O.Phys-Manipulation Protection against Physical Manipulation BSI.O.Leak-Forced Protection against Forced Information Leakage BSI.O.Abuse-Func Protection against Abuse of Functionality BSI.O.Identification TOE Identification BSI.O.RND Random Numbers BSI.O.Cap-Avail-Loader Capability and Availability of the Loader AUG1.O.Add-Functions Additional Specific Security Functionality AUG4.O.Mem-Access Dynamic Area based Memory Access Control O.Controlled-ES-Loading Controlled loading of the Security IC Embedded Software O.Resp-Appl Treatment of user data O.Firewall Application firewall Environments BSI.OE.Resp-Appl Treatment of User Data of the Composite TOE BSI.OE.Process-Sec-IC Protection during composite product manufacturing BSI.OE.Lim-Block-Loader Limitation of capability and blocking the Loader ST33G1M2AM C01 Security Target for composition Security objectives (ASE_OBJ) SMD_ST33G1M2AM_ST_19_002 27/78 4.1 Security objectives for the TOE BSI.O.Leak-Inherent Protection against Inherent Information Leakage BSI.O.Phys-Probing Protection against Physical Probing BSI.O.Malfunction Protection against Malfunctions BSI.O.Phys-Manipulation Protection against Physical Manipulation BSI.O.Leak-Forced Protection against Forced Information Leakage BSI.O.Abuse-Func Protection against Abuse of Functionality BSI.O.Identification TOE Identification BSI.O.RND Random Numbers BSI.O.Cap-Avail-Loader Capability and Availability of the Loader AUG1.O.Add-Functions Additional Specific Security Functionality: The TOE must provide the following specific security functionality to the Security IC Embedded Software: – Triple Data Encryption Standard (TDES), – Advanced Encryption Standard (AES), – Elliptic Curves Cryptography on GF(p), if NesLib is embedded, – Secure Hashing (SHA-1, SHA-224, SHA-256, SHA-384, SHA-512), if NesLib is embedded, – Rivest-Shamir-Adleman (RSA), if NesLib is embedded, – Deterministic Random Bit Generator (DRBG), if NesLib is embedded, – Keccak, if NesLib is embedded, – Keccak-p, if NesLib is embedded, – Diffie-Hellman, if NesLib is embedded, – Prime Number Generation, if NesLib is embedded. AUG4.O.Mem-Access Dynamic Area based Memory Access Control: The TOE must provide the Security IC Embedded Software with the capability to define dynamic memory segmentation and protection. The TOE must then enforce the defined access rules so that access of software to memory areas is controlled as required, for example, in a multi-application environment. O.Controlled-ES-Loading Controlled loading of the Security IC Embedded Software: The TOE must provide the capability to load the Security IC Embedded Software into the NVM, either before TOE delivery, under ST authority, either after TOE delivery, under the composite product manufacturer authority. The TOE must restrict the access to these features. The TOE must provide control means to check the integrity of the loaded user data. This capability is not available in User configuration. Security objectives (ASE_OBJ) ST33G1M2AM C01 Security Target for composition 28/78 SMD_ST33G1M2AM_ST_19_002 4.2 Security objectives for the environment 108 Security Objectives for the Security IC Embedded Software development environment (phase 1): 109 Security Objectives for the operational Environment (phase 4 up to 6): 4.3 Security objectives rationale 110 The main line of this rationale is that the inclusion of all the security objectives of the BSI- CC-PP-0084-2014 protection profile, together with those in AUG, and those introduced in this ST, guarantees that all the security environment aspects identified in Section 3 are addressed by the security objectives stated in this chapter. 111 Thus, it is necessary to show that: • security environment aspects from AUG and from this ST, are addressed by security objectives stated in this chapter, • security objectives from AUG and from this ST, are suitable (i.e. they address security environment aspects), • security objectives from AUG and from this ST, are consistent with the other security objectives stated in this chapter (i.e. no contradictions). 112 The selected augmentations from AUG introduce the following security environment aspects: • TOE threat "Memory Access Violation, (AUG4.T.Mem-Access)", • organisational security policy "Additional Specific Security Functionality, (AUG1.P.Add- Functions)". O.Resp-Appl Treatment of user data: Security relevant User Data (especially cryptographic keys) are treated by the Security IC Embedded Software as required by the security needs of the specific application context. For example the Security IC Embedded Software will not disclose security relevant user data to unauthorised users or processes when communicating with a terminal. O.Firewall Application firewall: The TOE provides a service to ensure isolation of data and code between a Protected Application and the other applications. Another application shall not read, write, compare any piece of data or code belonging to the Protected Application. BSI.OE.Resp-Appl Treatment of User Data of the Composite TOE BSI.OE.Process-Sec-IC Protection during composite product manufacturing BSI.OE.Lim-Block-Loader Limitation of capability and blocking the Loader ST33G1M2AM C01 Security Target for composition Security objectives (ASE_OBJ) SMD_ST33G1M2AM_ST_19_002 29/78 113 The augmentation made in this ST introduces the following security environment aspects: • TOE threats "Application code confidentiality, (T.Confid-Applic-Code)", "Application data confidentiality, (T.Confid-Applic-Data)", "Application code integrity, (T.Integ-Applic- Code)", and "Application data integrity, (T.Integ-Applic-Data)". • organisational security policies "Controlled loading of the Security IC Embedded Software, (P.Controlled-ES-Loading)", and "Treatment of user data, (P.Resp-Appl)". 114 The justification of the additional policies, and additional threats provided in the next subsections shows that they do not contradict to the rationale already given in the protection profile BSI-CC-PP-0084-2014 for the assumptions, policy and threats defined there. Table 6. Security Objectives versus Assumptions, Threats or Policies Assumption, Threat or Organisational Security Policy Security Objective Notes BSI.A.Resp-Appl BSI.OE.Resp-Appl Phase 1 BSI.P.Process-TOE BSI.O.Identification Phase 2-3 optional Phase 4 BSI.P.Lim-Block-Loader BSI.O.Cap-Avail-Loader BSI.OE.Lim-Block-Loader Phase 5-6 optional Phase 4 BSI.A.Process-Sec-IC BSI.OE.Process-Sec-IC Phase 5-6 optional Phase 4 P.Controlled-ES-Loading O.Controlled-ES-Loading Phase 4-6 AUG1.P.Add-Functions AUG1.O.Add-Functions P.Resp-Appl O.Resp-Appl BSI.T.Leak-Inherent BSI.O.Leak-Inherent BSI.T.Phys-Probing BSI.O.Phys-Probing BSI.T.Malfunction BSI.O.Malfunction BSI.T.Phys-Manipulation BSI.O.Phys-Manipulation BSI.T.Leak-Forced BSI.O.Leak-Forced BSI.T.Abuse-Func BSI.O.Abuse-Func BSI.T.RND BSI.O.RND AUG4.T.Mem-Access AUG4.O.Mem-Access T.Confid-Applic-Code O.Firewall T.Confid-Applic-Data O.Firewall T.Integ-Applic-Code O.Firewall T.Integ-Applic-Data O.Firewall Security objectives (ASE_OBJ) ST33G1M2AM C01 Security Target for composition 30/78 SMD_ST33G1M2AM_ST_19_002 4.3.1 TOE threat "Memory Access Violation" 115 The justification related to the threat “Memory Access Violation, (AUG4.T.Mem-Access)” is as follows: 116 According to AUG4.O.Mem-Access the TOE must enforce the dynamic memory segmentation and protection so that access of software to memory areas is controlled. Any restrictions are to be defined by the Security IC Embedded Software. Thereby security violations caused by accidental or deliberate access to restricted data (which may include code) can be prevented (refer to AUG4.T.Mem-Access). The threat AUG4.T.Mem-Access is therefore removed if the objective is met. 117 The added objective for the TOE AUG4.O.Mem-Access does not introduce any contradiction in the security objectives for the TOE. 4.3.2 TOE threat "Application code confidentiality" 118 The justification related to the threat “Application code confidentiality, (T.Confid-Applic- Code)” is as follows: 119 Since O.Firewall requires that the TOE ensures isolation of code between the Protected Application and the other applications, the code of the Protected Application is protected against unauthorised disclosure, therefore T.Confid-Applic-Code is covered by O.Firewall. 120 The added objective for the TOE O.Firewall does not introduce any contradiction in the security objectives for the TOE. 4.3.3 TOE threat "Application data confidentiality" 121 The justification related to the threat “Application data confidentiality, (T.Confid-Applic-Data)” is as follows: 122 Since O.Firewall requires that the TOE ensures isolation of data between the Protected Application and the other applications, the data of the Protected Application is protected against unauthorised disclosure, therefore T.Confid-Applic-Data is covered by O.Firewall. 4.3.4 TOE threat "Application code integrity" 123 The justification related to the threat “Application code integrity, (T.Integ-Applic-Code)” is as follows: 124 The threat is related to the alteration of the code of the Protected Application by an attacker. O.Firewall requires that the TOE ensures isolation of code between the Protected Application and the other applications, thus protecting the code of the Protected Application against unauthorised modification. Therefore the threat is covered by O.Firewall. 4.3.5 TOE threat "Application data integrity" 125 The justification related to the threat “Application data integrity, (T.Integ-Applic-Data)” is as follows: 126 The threat is related to the alteration of the data the Protected Application by an attacker. Since O.Firewall requires that the TOE ensures complete isolation of data between the Protected Application and the other applications, the data of the Protected Application is protected against unauthorised modification, therefore T.Integ-Applic-Data is covered by O.Firewall. ST33G1M2AM C01 Security Target for composition Security objectives (ASE_OBJ) SMD_ST33G1M2AM_ST_19_002 31/78 4.3.6 Organisational security policy "Additional Specific Security Functionality" 127 The justification related to the organisational security policy "Additional Specific Security Functionality, (AUG1.P.Add-Functions)” is as follows: 128 Since AUG1.O.Add-Functions requires the TOE to implement exactly the same specific security functionality as required by AUG1.P.Add-Functions, and in the very same conditions, the organisational security policy is covered by the objective. 129 Nevertheless the security objectives BSI.O.Leak-Inherent, BSI.O.Phys-Probing, , BSI.O.Malfunction, BSI.O.Phys-Manipulation and BSI.O.Leak-Forced define how to implement the specific security functionality required by AUG1.P.Add-Functions. (Note that these objectives support that the specific security functionality is provided in a secure way as expected from AUG1.P.Add-Functions.) Especially BSI.O.Leak-Inherent and BSI.O.Leak-Forced refer to the protection of confidential data (User Data or TSF data) in general. User Data are also processed by the specific security functionality required by AUG1.P.Add-Functions. 130 The added objective for the TOE AUG1.O.Add-Functions does not introduce any contradiction in the security objectives for the TOE. 4.3.7 Organisational security policy "Controlled loading of the Security IC Embedded Software" 131 The justification related to the organisational security policy "Controlled loading of the Security IC Embedded Software, (P.Controlled-ES-Loading)” is as follows: 132 Since O.Controlled-ES-Loading requires the TOE to implement exactly the same specific security functionality as required by P.Controlled-ES-Loading, and in the very same conditions, the organisational security policy is covered by the objective. 133 The added objective for the TOE O.Controlled-ES-Loading does not introduce any contradiction in the security objectives. 4.3.8 Organisational security policy "Treatment of user data" 134 The justification related to the organisational security policy "Treatment of user data, (P.Resp-Appl)” is as follows: 135 The policy states that the Security IC Embedded Software included in the TOE, treats user data according to the PP assumption BSI.A.Resp-Appl. O.Resp-Appl has the same objective as BSI.OE.Resp-Appl defined in the PP. Thus, the objectives O.Resp-Appl covers the policy P.Resp-Appl. 136 The added objective for the TOE O.Resp-Appl does not introduce any contradiction in the security objectives. Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 32/78 SMD_ST33G1M2AM_ST_19_002 5 Security requirements (ASE_REQ) 137 This chapter on security requirements contains a section on security functional requirements (SFRs) for the TOE (Section 5.1), a section on security assurance requirements (SARs) for the TOE (Section 5.2), a section on the refinements of these SARs (Section 5.3) as required by the "BSI-CC-PP-0084-2014" Protection Profile. This chapter includes a section with the security requirements rationale (Section 5.4). 5.1 Security functional requirements for the TOE 138 Security Functional Requirements (SFRs) from the "BSI-CC-PP-0084-2014" Protection Profile (PP) are drawn from CCMB-2017-04-002 R5, except the following SFRs, that are extensions to CCMB-2017-04-002 R5: • FCS_RNG Generation of random numbers, • FMT_LIM Limited capabilities and availability, • FAU_SAS Audit data storage, • FDP_SDC Stored data confidentiality. The reader can find their certified definitions in the text of the "BSI-CC-PP-0084-2014" Protection Profile. 139 All extensions to the SFRs of the "BSI-CC-PP-0084-2014" Protection Profiles (PPs) are exclusively drawn from CCMB-2017-04-002 R5. 140 All iterations, assignments, selections, or refinements on SFRs have been performed according to section C.4 of CCMB-2017-04-001 R5. They are easily identified in the following text as they appear as indicated here. Note that in order to improve readability, iterations are sometimes expressed within tables. 141 In order to ease the definition and the understanding of these security functional requirements, a simplified presentation of the TOE Security Policy (TSP) is given in the following section. 142 The selected security functional requirements for the TOE, their respective origin and type are summarized in Table 7. Table 7. Summary of functional security requirements for the TOE Label Title Addressing Origin Type FRU_FLT.2 Limited fault tolerance Malfunction BSI-CC-PP- 0084-2014 CCMB-2017-04-002 R5 FPT_FLS.1 Failure with preservation of secure state ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 33/78 FMT_LIM.1 / Test Limited capabilities Abuse of Test functionality BSI-CC-PP- 0084-2014 Extended FMT_LIM.2 / Test Limited availability FMT_LIM.1 / Loader Limited capabilities Abuse of Loader functionality BSI-CC-PP- 0084-2014 Operated FMT_LIM.2 / Loader Limited availability FAU_SAS.1 Audit storage Lack of TOE identification FDP_SDC.1 Stored data confidentiality Physical manipulation & probing FDP_SDI.2 Stored data integrity monitoring and action CCMB-2017-04-002 R5 FPT_PHP.3 Resistance to physical attack BSI-CC-PP- 0084-2014 FDP_ITT.1 Basic internal transfer protection Leakage FPT_ITT.1 Basic internal TSF data transfer protection FDP_IFC.1 Subset information flow control FCS_RNG.1 Random number generation Weak cryptographic quality of random numbers BSI-CC-PP- 0084-2014 Operated Extended FCS_COP.1 Cryptographic operation Cipher scheme support AUG #1 Operated CCMB-2017-04-002 R5 FCS_CKM.1 (if NesLib is embedded) Cryptographic key generation Security Target Operated FDP_ACC.2 / Memories Complete access control Memory access violation Security Target Operated FDP_ACF.1 / Memories Security attribute based access control AUG #4 Operated FMT_MSA.3 / Memories Static attribute initialisation Correct operation FMT_MSA.1 / Memories Management of security attribute FMT_SMF.1 / Memories Specification of management functions Security Target Operated Table 7. Summary of functional security requirements for the TOE (continued) Label Title Addressing Origin Type Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 34/78 SMD_ST33G1M2AM_ST_19_002 5.1.1 Security Functional Requirements from the Protection Profile Limited fault tolerance (FRU_FLT.2) 143 The TSF shall ensure the operation of all the TOE’s capabilities when the following failures occur: exposure to operating conditions which are not detected according to the requirement Failure with preservation of secure state (FPT_FLS.1). Failure with preservation of secure state (FPT_FLS.1) 144 The TSF shall preserve a secure state when the following types of failures occur: exposure to operating conditions which may not be tolerated according to the requirement Limited fault tolerance (FRU_FLT.2) and where therefore a malfunction could occur. 145 Refinements: The term “failure” above also covers “circumstances”. The TOE prevents failures for the “circumstances” defined above. Regarding application note 14 of BSI-CC-PP-0084-2014, the secure state is reached by an immediate interrupt or by a reset, depending on the current context. Regarding application note 15 of BSI-CC-PP-0084-2014, the TOE provides information on the operating conditions monitored during Security IC Embedded Software FDP_ITC.1 / Loader Import of user data without security attributes User data loading access violation Security Target Operated CCMB-2017-04-002 R5 FDP_ACC.1 / Loader Subset access control FDP_ACF.1 / Loader Security attribute based access control FMT_MSA.3 / Loader Static attribute initialisation Correct operation FMT_MSA.1 / Loader Management of security attribute FMT_SMR.1 / Loader Security roles Abuse of Admin functionality FIA_UID.1 / Loader Timing of identification FMT_SMF.1 / Loader Specification of management functions FDP_ACC.1 / APPLI_FWL Subset access control Protected Application intrinsic confidentiality and integrity FDP_ACF.1 / APPLI_FWL Security attribute based access control FMT_MSA.3 / APPLI_FWL Static attribute initialisation Table 7. Summary of functional security requirements for the TOE (continued) Label Title Addressing Origin Type ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 35/78 execution and after a warm reset. No audit requirement is however selected in this Security Target. Limited capabilities (FMT_LIM.1) / Test 146 The TSF shall be designed and implemented in a manner that limits their capabilities so that in conjunction with “Limited availability (FMT_LIM.2)” the following policy is enforced: Limited capability and availability Policy / Test. Limited availability (FMT_LIM.2) / Test 147 The TSF shall be designed and implemented in a manner that limits their availability so that in conjunction with “Limited capabilities (FMT_LIM.1) / Test” the following policy is enforced: Limited capability and availability Policy / Test. 148 SFP_1: Limited capability and availability Policy / Test Deploying Test Features after TOE Delivery does not allow User Data of the Composite TOE to be disclosed or manipulated, TSF data to be disclosed or manipulated, software to be reconstructed and no substantial information about construction of TSF to be gathered which may enable other attacks. Audit storage (FAU_SAS.1) 149 The TSF shall provide the test process before TOE Delivery with the capability to store the Initialisation Data and/or Pre-personalisation Data and/or supplements of the Security IC Embedded Software in the NVM. Stored data confidentiality (FDP_SDC.1) 150 The TSF shall ensure the confidentiality of the information of the user data while it is stored in all the memory areas where it can be stored. Stored data integrity monitoring and action (FDP_SDI.2) 151 The TSF shall monitor user data stored in containers controlled by the TSF for integrity errors on all objects, based on the following attributes: user data stored in all possible memory areas, depending on the integrity control attributes. 152 Upon detection of a data integrity error, the TSF shall signal the error and react. Resistance to physical attack (FPT_PHP.3) 153 The TSF shall resist physical manipulation and physical probing, to the TSF by responding automatically such that the SFRs are always enforced. 154 Refinement: The TSF will implement appropriate mechanisms to continuously counter physical manipulation and physical probing. Due to the nature of these attacks (especially manipulation) the TSF can by no means detect attacks on all of its elements. Therefore, permanent protection against these attacks is required ensuring that security functional requirements are enforced. Hence, “automatic response” means here (i)assuming that there might be an attack at any time and (ii)countermeasures are provided at any time. Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 36/78 SMD_ST33G1M2AM_ST_19_002 Basic internal transfer protection (FDP_ITT.1) 155 The TSF shall enforce the Data Processing Policy to prevent the disclosure of user data when it is transmitted between physically-separated parts of the TOE. Basic internal TSF data transfer protection (FPT_ITT.1) 156 The TSF shall protect TSF data from disclosure when it is transmitted between separate parts of the TOE. 157 Refinement: The different memories, the CPU and other functional units of the TOE (e.g. a cryptographic co-processor) are seen as separated parts of the TOE. This requirement is equivalent to FDP_ITT.1 above but refers to TSF data instead of User Data. Therefore, it should be understood as to refer to the same Data Processing Policy defined under FDP_IFC.1 below. Subset information flow control (FDP_IFC.1) 158 The TSF shall enforce the Data Processing Policy on all confidential data when they are processed or transferred by the TOE or by the Security IC Embedded Software. 159 SFP_2: Data Processing Policy User Data of the Composite TOE and TSF data shall not be accessible from the TOE except when the Security IC Embedded Software decides to communicate the User Data via an external interface. The protection shall be applied to confidential data only but without the distinction of attributes controlled by the Security IC Embedded Software. Random number generation (FCS_RNG.1) 160 The TSF shall provide a physical random number generator that implements: • (PTG.2.1) A total failure test detects a total failure of entropy source immediately when the RNG has started. When a total failure is detected, no random numbers will be output. • (PTG.2.2) If a total failure of the entropy source occurs while the RNG is being operated, the RNG prevents the output of any internal random number that depends on some raw random numbers that have been generated after the total failure of the entropy source. • (PTG.2.3) The online test shall detect non-tolerable statistical defects of the raw random number sequence (i) immediately when the RNG has started, and (ii) while the RNG is being operated. The TSF must not output any random numbers before the power-up online test has finished successfully or when a defect has been detected. • (PTG.2.4) The online test procedure shall be effective to detect non-tolerable weaknesses of the random numbers soon. • (PTG.2.5) The online test procedure checks the quality of the raw random number sequence. It is triggered externally. The online test is suitable for detecting non- tolerable statistical defects of the statistical properties of the raw random numbers within an acceptable period of time. ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 37/78 161 The TSF shall provide octets of bits that meet • (PTG.2.6) Test procedure A does not distinguish the internal random numbers from output sequences of an ideal RNG. • (PTG.2.7) The average Shannon entropy per internal random bit exceeds 0.997. 5.1.2 Additional Security Functional Requirements for the cryptographic services Cryptographic operation (FCS_COP.1) 162 The TSF shall perform the operations in Table 8 in accordance with a specified cryptographic algorithm in Table 8 and cryptographic key sizes of Table 8 that meet the standards in Table 8. The list of operations may depend on the presence of NesLib, as indicated in Table 8 (Restrict). PKCS-1 Table 8. FCS_COP.1 iterations (cryptographic operations) Restrict Iteration label [assignment: list of cryptographic operations] [assignment: cryptographic algorithm] [assignment: cryptographic key sizes] [assignment: list of standards] TDES(1) * encryption * decryption - in Cipher Block Chaining (CBC) mode - in Electronic Code Book (ECB) mode Triple Data Encryption Standard (TDES) 168 bits NIST SP 800-67 NIST SP 800-38A AES * encryption (cipher) * decryption (inverse cipher) - in Cipher Block Chaining (CBC) mode - in Electronic Code Book (ECB) mode Advanced Encryption Standard 128, 192 and 256 bits FIPS PUB 197 NIST SP 800-38B NIST SP 800-38A NIST SP 800-38D NIST SP 800-38C If NesLib * Message authentication Code computation (CMAC) * Authenticated encryption/decryption in Galois Counter Mode (GCM) * Authenticated encryption/decryption in Counter with CBC-MAC (CCM) Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 38/78 SMD_ST33G1M2AM_ST_19_002 If NesLib RSA * RSA public key operation * RSA private key operation without the Chinese Remainder Theorem * RSA private key operation with the Chinese Remainder Theorem * EMSA PSS and PKCS1 signature scheme coding * RSA Key Encapsulation Method (KEM) Rivest, Shamir & Adleman’s up to 4096 bits PKCS #1 V2.1 If NesLib ECC on Weierstra ss curves * private scalar multiplication * prepare Jacobian * public scalar multiplication * point validity check * convert Jacobian to affine coordinates * general point addition * point expansion * point compression Elliptic Curves Cryptography on GF(p) on curves in Weierstrass form up to 640 bits IEEE 1363-2000, chapter 7 IEEE 1363a-2004 * Diffie-Hellman (ECDH) key agreement computation NIST SP 800-56A * digital signature algorithm (ECDSA) generation and verification FIPS PUB 186-4 ANSI X9.62, section 7 If NesLib ECC on Edwards curves * ed25519 generation * ed25519 verification * ed25519 point decompression Elliptic Curves Cryptography on GF(p) on curves in Edwards form, with curve 25519 256 bits EdDSA rfc EDDSA EDDSA2 Table 8. FCS_COP.1 iterations (cryptographic operations) (continued) Restrict Iteration label [assignment: list of cryptographic operations] [assignment: cryptographic algorithm] [assignment: cryptographic key sizes] [assignment: list of standards] ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 39/78 If NesLib SHA * SHA-1(2) * SHA-224 * SHA-256 * SHA-384 * SHA-512 * Protected SHA-1(1) * Protected SHA-256 * Protected SHA-384 * Protected SHA-512 Secure Hash Algorithm assignment pointless because algorithm has no key FIPS PUB 180-2 * HMAC using Protected SHA-1(2) or Protected SHA-256 up to 512 bits FIPS PUB 198-1 If NesLib Keccak and SHA-3 * SHAKE128, * SHAKE256, * SHA3-224, * SHA3-256, * SHA3-384, * SHA3-512, * Keccak[r,1600-r], * protected SHAKE128, * protected SHAKE256, * protected SHA3-224, * protected SHA3-256, * protected SHA3-384, * protected SHA3-512, * Protected Keccak[r,1600-r] Keccak no key for plain functions, variable key length up to security level for protected functions (security level is last number in function names and 1600-c for Keccak) FIPS PUB 202 If NesLib Keccak-p * Keccak-p[1600,n_r = 24], * Keccak-p[1600, n_r=12], * protected Keccak- p[1600,n_r = 24], * protected Keccak- p[1600, n_r=12] Keccak-p no key for plain functions, any key length up to 256 bits for protected functions FIPS PUB 202 If NesLib Diffie- Hellman Diffie-Hellman Diffie-Hellman up to 4096 bits ANSI X9.42 Table 8. FCS_COP.1 iterations (cryptographic operations) (continued) Restrict Iteration label [assignment: list of cryptographic operations] [assignment: cryptographic algorithm] [assignment: cryptographic key sizes] [assignment: list of standards] Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 40/78 SMD_ST33G1M2AM_ST_19_002 Cryptographic key generation (FCS_CKM.1) 163 If NesLib is embedded only, the TSF shall generate cryptographic keys in accordance with a specified cryptographic key generation algorithm, in Table 9, and specified cryptographic key sizes of Table 9 that meet the following standards in Table 9. 5.1.3 Additional Security Functional Requirements for the memories protection 164 The following SFRs are extensions to "BSI-CC-PP-0084-2014" Protection Profile (PP), related to the memories protection. Static attribute initialisation (FMT_MSA.3) / Memories 165 The TSF shall enforce the Dynamic Memory Access Control Policy to provide minimally protective(c) default values for security attributes that are used to enforce the SFP. If NesLib DRBG * SHA-1(2) * SHA-224 * SHA-256 * SHA-384 * SHA-512 Hash-DRBG None NIST SP 800-90 FIPS PUB 180-2 *AES CTR-DRBG 128, 192 and 256 bits NIST SP 800-90 FIPS PUB 197 1. Note that DES and triple DES with two keys are no longer recommended as encryption functions. Hence, Security IC Embedded Software may need to use triple DES with three keys to achieve a suitable strength. 2. Note that SHA-1 is no longer recommended as a cryptographic function. Hence, Security IC Embedded Software may need to use another SHA to achieve a suitable strength. Table 8. FCS_COP.1 iterations (cryptographic operations) (continued) Restrict Iteration label [assignment: list of cryptographic operations] [assignment: cryptographic algorithm] [assignment: cryptographic key sizes] [assignment: list of standards] Table 9. FCS_CKM.1 iterations (cryptographic key generation) Iteration label [assignment: cryptographic key generation algorithm] [assignment: cryptographic key sizes] [assignment: list of standards] Prime generation prime generation and RSA prime generation algorithm, optionally protected against side channel attacks, and/or optionally with conditions up to 2048 bits FIPS PUB 140-2 FIPS PUB 186-4 RSA key generation RSA key pair generation algorithm, optionally protected against side channel attacks, and/or optionally with conditions up to 4096 bits FIPS PUB 140-2 ISO/IEC 9796-2 PKCS #1 V2.1 c. See the Datasheet referenced in Section 7 for actual values. ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 41/78 166 The TSF shall allow none to specify alternative initial values to override the default values when an object or information is created. Application note: The security attributes are the set of access rights currently defined. They are dynamically attached to the subjects and objects locations, i.e. each logical address. Management of security attributes (FMT_MSA.1) / Memories 167 The TSF shall enforce the Dynamic Memory Access Control Policy to restrict the ability to modify the security attributes current set of access rights to software running in privileged mode. Complete access control (FDP_ACC.2) / Memories 168 The TSF shall enforce the Dynamic Memory Access Control Policy on all subjects (software), all objects (data including code stored in memories) and all operations among subjects and objects covered by the SFP. 169 The TSF shall ensure that all operations between any subject controlled by the TSF and any object controlled by the TSF are covered by an access control SFP. Security attribute based access control (FDP_ACF.1) / Memories 170 The TSF shall enforce the Dynamic Memory Access Control Policy to objects based on the following: software mode, the object location, the operation to be performed, and the current set of access rights. 171 The TSF shall enforce the following rules to determine if an operation among controlled subjects and controlled objects is allowed: the operation is allowed if and only if the software mode, the object location and the operation matches an entry in the current set of access rights. 172 The TSF shall explicitly authorise access of subjects to objects based on the following additional rules: none. 173 The TSF shall explicitly deny access of subjects to objects based on the following additional rules: in Admin or User configuration, any access (read, write, execute) to the OST ROM is denied, and in User configuration, any write access to the ST NVM is denied. 174 Note: It should be noted that this level of policy detail is not needed at the application level. The composite Security Target writer should describe the ES access control and information flow control policies instead. Within the ES High Level Design description, the chosen setting of IC security attributes would be shown to implement the described policies relying on the IC SFP presented here. 175 The following SFP Dynamic Memory Access Control Policy is defined for the requirement "Security attribute based access control (FDP_ACF.1) / Memories": 176 SFP_3: Dynamic Memory Access Control Policy The TSF must control read, write, execute accesses of software to data, based on the software mode and on the current set of access rights. Specification of management functions (FMT_SMF.1) / Memories 177 The TSF will be able to perform the following management functions: modification of the current set of access rights security attributes by software running in privileged mode, supporting the Dynamic Memory Access Control Policy. Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 42/78 SMD_ST33G1M2AM_ST_19_002 5.1.4 Additional Security Functional Requirements related to the possible availability of loading capabilities in phases 4 to 6 of the TOE life-cycle Limited capabilities (FMT_LIM.1) / Loader 178 The TSF shall be designed and implemented in a manner that limits its capabilities so that in conjunction with “Limited availability (FMT_LIM.2)” the following policy is enforced: Loader Limited capability Policy. 179 SFP_4: Loader Limited capability Policy 180 Deploying Loader functionality after blocking of the loader does not allow stored user data to be disclosed or manipulated by unauthorized user. Limited availability (FMT_LIM.2) / Loader 181 The TSF shall be designed and implemented in a manner that limits its availability so that in conjunction with “Limited capabilities (FMT_LIM.1)” the following policy is enforced: Loader Limited availability Policy. 182 SFP_5: Loader Limited availability Policy 183 The TSF prevents deploying the Loader functionality after blocking of the loader. Import of user data without security attributes (FDP_ITC.1) / Loader 184 The TSF shall enforce the Loading Access Control Policy when importing user data, controlled under the SFP, from ouside of the TOE. 185 The TSF shall ignore any security attributes associated with the User data when imported from outside of the TOE. 186 The TSF shall enforce the following rules when importing user data controlled under the SFP from outside of the TOE: • the integrity of the loaded user data is checked at the end of each loading session, • the loaded user data is received encrypted, internally decrypted, then stored into the NVM. Static attribute initialisation (FMT_MSA.3) / Loader 187 The TSF shall enforce the Loading Access Control Policy to provide restrictive default values for security attributes that are used to enforce the SFP. 188 The TSF shall allow none to specify alternative initial values to override the default values when an object or information is created. Management of security attributes (FMT_MSA.1) / Loader 189 The TSF shall enforce the Loading Access Control Policy to restrict the ability to modify the security attributes remaining loading sessions to the Loader Administrator. Subset access control (FDP_ACC.1) / Loader 190 The TSF shall enforce the Loading Access Control Policy on all subjects, object NVM and all commands. ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 43/78 Security attribute based access control (FDP_ACF.1) / Loader 191 The TSF shall enforce the Loading Access Control Policy to objects based on the following: the TOE mode, the user authenticated role, the remaining loading sessions and the requested command, according to the fixed loader access rights. 192 The TSF shall enforce the following rules to determine if an operation among controlled subjects and controlled objects is allowed: the command is allowed if and only if the TOE mode, the user authenticated role, the remaining loading sessions and the requested command match an entry in the fixed loader access rights. 193 The TSF shall explicitly authorise access of subjects to objects based on the following additional rules: none. 194 The TSF shall explicitly deny access of subjects to objects based on the following additional rules: in User mode, no loader command is deployed. 195 The following SFP Loading Access Control Policy is defined for the requirement "Security attribute based access control (FDP_ACF.1) / Loader": 196 SFP_6: Loading Access Control Policy 197 The TSF must enforce that only authorised users are allowed to download User code and data into the User NVM or to set the product profile. The TSF must enforce that only authorised users are allowed to be administrator of the provided loader functionality. The TSF controls access to the loader functionality based on the TOE mode, the user authenticated role, the remaining loading sessions and the requested command according to the fixed loader access rights. Specification of management functions (FMT_SMF.1) / Loader 198 The TSF will be able to perform the following management functions: change the TOE mode, change the user role, change the remaining sessions. Security roles (FMT_SMR.1) / Loader 199 The TSF shall maintain the roles: Loader and Loader Administrator. 200 The TSF shall be able to associate users with roles. Timing of identification (FIA_UID.1) / Loader 201 The TSF shall allow boot and authentication command on behalf of the user to be performed before the user is identified. 202 The TSF shall require each user to be successfully identified before allowing any other TSF mediated actions on behalf of that user. 5.1.5 Additional Security Functional Requirements related to the Application Firewall 203 The following SFRs are extensions to "BSI-CC-PP-0084-2014" Protection Profile (PP), related to the protections by the Application Firewall. Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 44/78 SMD_ST33G1M2AM_ST_19_002 Subset access control (FDP_ACC.1) / APPLI_FWL 204 The TSF shall enforce the Protected Application Firewall Access Control Policy on the Protected Application code and data. Security attribute based access control (FDP_ACF.1) / APPLI_FWL 205 The TSF shall enforce the Protected Application Firewall Access Control Policy to objects based on the following: Protected Application code and data. 206 The TSF shall enforce the following rules to determine if an operation among controlled subjects and controlled objects is allowed: Another application cannot read, write, compare any piece of data or code belonging to the Protected Application. 207 The TSF shall explicitly authorise access of subjects to objects based on the following additional rules: None. 208 The TSF shall explicitly deny access of subjects to objects based on the following additional rules: • Another application cannot read, write, compare any piece of data or code belonging to the Protected Application. 209 The following SFP Protected Application Firewall Access Control Policy is defined for the requirement "Security attribute based access control (FDP_ACF.1) / APPLI_FWL": 210 SFP_7: Protected Application Firewall Access Control Policy 211 Another application cannot read, write, compare any piece of data or code belonging to the Protected Application. Static attribute initialisation (FMT_MSA.3) / APPLI_FWL 212 The TSF shall enforce the Protected Application Firewall Access Control Policy to provide restrictive default values for security attributes that are used to enforce the SFP. 213 The TSF shall allow no subject to specify alternative initial values to override the default values when an object or information is created. 5.2 TOE security assurance requirements 214 Security Assurance Requirements for the TOE for the evaluation of the TOE are those taken from the Evaluation Assurance Level 5 (EAL5) and augmented by taking the following components: • ALC_DVS.2 and AVA_VAN.5. 215 Regarding application note 21 of BSI-CC-PP-0084-2014, the continuously increasing maturity level of evaluations of Security ICs justifies the selection of a higher-level assurance package. 216 The set of security assurance requirements (SARs) is presented in Table 10, indicating the origin of the requirement. ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 45/78 5.3 Refinement of the security assurance requirements 217 As BSI-CC-PP-0084-2014 defines refinements for selected SARs, these refinements are also claimed in this Security Target. 218 The main customizing is that the IC Dedicated Software is an operational part of the TOE after delivery, although it is mainly not available to the user. Table 10. TOE security assurance requirements Label Title Origin ADV_ARC.1 Security architecture description EAL5/BSI-CC-PP-0084-2014 ADV_FSP.5 Complete semi-formal functional specification with additional error information EAL5 ADV_IMP.1 Implementation representation of the TSF EAL5/BSI-CC-PP-0084-2014 ADV_INT.2 Well-stuctured internals EAL5 ADV_TDS.4 Semiformal modular design EAL5 AGD_OPE.1 Operational user guidance EAL5/BSI-CC-PP-0084-2014 AGD_PRE.1 Preparative procedures EAL5/BSI-CC-PP-0084-2014 ALC_CMC.4 Production support, acceptance procedures and automation EAL5/BSI-CC-PP-0084-2014 ALC_CMS.5 Development tools CM coverage EAL5 ALC_DEL.1 Delivery procedures EAL5/BSI-CC-PP-0084-2014 ALC_DVS.2 Sufficiency of security measures BSI-CC-PP-0084-2014 ALC_LCD.1 Developer defined life-cycle model EAL5/BSI-CC-PP-0084-2014 ALC_TAT.2 Compliance with implementation standards EAL5 ASE_CCL.1 Conformance claims EAL5/BSI-CC-PP-0084-2014 ASE_ECD.1 Extended components definition EAL5/BSI-CC-PP-0084-2014 ASE_INT.1 ST introduction EAL5/BSI-CC-PP-0084-2014 ASE_OBJ.2 Security objectives EAL5/BSI-CC-PP-0084-2014 ASE_REQ.2 Derived security requirements EAL5/BSI-CC-PP-0084-2014 ASE_SPD.1 Security problem definition EAL5/BSI-CC-PP-0084-2014 ASE_TSS.1 TOE summary specification EAL5/BSI-CC-PP-0084-2014 ATE_COV.2 Analysis of coverage EAL5/BSI-CC-PP-0084-2014 ATE_DPT.3 Testing: modular design EAL5 ATE_FUN.1 Functional testing EAL5/BSI-CC-PP-0084-2014 ATE_IND.2 Independent testing - sample EAL5/BSI-CC-PP-0084-2014 AVA_VAN.5 Advanced methodical vulnerability analysis BSI-CC-PP-0084-2014 Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 46/78 SMD_ST33G1M2AM_ST_19_002 219 Regarding application note 22 of BSI-CC-PP-0084-2014, the refinements for all the assurance families have been reviewed for the hierarchically higher-level assurance components selected in this Security Target. 220 The text of the impacted refinements of BSI-CC-PP-0084-2014 is reproduced in the next sections. 221 For reader’s ease, an impact summary is provided in Table 11. 5.3.1 Refinement regarding functional specification (ADV_FSP) 222 Although the IC Dedicated Test Software is a part of the TOE, the test functions of the IC Dedicated Test Software are not described in the Functional Specification because the IC Dedicated Test Software is considered as a test tool delivered with the TOE but not providing security functions for the operational phase of the TOE. The IC Dedicated Software provides security functionalities as soon as the TOE becomes operational (boot software). These are properly identified in the delivered documentation. 223 The Functional Specification refers to datasheet to trace security features that do not provide any external interface but that contribute to fulfil the SFRs e.g. like physical protection. Thereby they are part of the complete instantiation of the SFRs. 224 The Functional Specification refers to design specifications to detail the mechanisms against physical attacks described in a more general way only, but detailed enough to be able to support Test Coverage Analysis also for those mechanisms where inspection of the layout is of relevance or tests beside the TSFI may be needed. 225 The Functional Specification refers to data sheet to specify operating conditions of the TOE. These conditions include but are not limited to the frequency of the clock, the power supply, and the temperature. Table 11. Impact of EAL5 selection on BSI-CC-PP-0084-2014 refinements Assurance Family BSI-CC-PP- 0084-2014 Level ST Level Impact on refinement ADO_DEL 1 1 None ALC_DVS 2 2 None ALC_CMS 4 5 None, refinement is still valid ALC_CMC 4 4 None ADV_ARC 1 1 None ADV_FSP 4 5 Presentation style changes, IC Dedicated Software is included ADV_IMP 1 1 None ATE_COV 2 2 IC Dedicated Software is included AGD_OPE 1 1 None AGD_PRE 1 1 None AVA_VAN 5 5 None ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 47/78 226 All functions and mechanisms which control access to the functions provided by the IC Dedicated Test Software (refer to the security functional requirement (FMT_LIM.2)) are part of the Functional Specification. Details will be given in the document for ADV_ARC, refer to Section 6.2.1.5. In addition, all these functions and mechanisms are subsequently be refined according to all relevant requirements of the Common Criteria assurance class ADV because these functions and mechanisms are active after TOE Delivery and need to be part of the assurance aspects Tests (class ATE) and Vulnerability Assessment (class AVA). Therefore, all necessary information is provided to allow tests and vulnerability assessment. 227 Since the selected higher-level assurance component requires a security functional specification presented in a “semi-formal style" (ADV_FSP.5.2C) the changes affect the style of description, the BSI-CC-PP-0084-2014 refinements can be applied with changes covering the IC Dedicated Test Software and are valid for ADV_FSP.5. 5.3.2 Refinement regarding test coverage (ATE_COV) 228 The TOE is tested under different operating conditions within the specified ranges. These conditions include but are not limited to the frequency of the clock, the power supply, and the temperature. This means that “Fault tolerance (FRU_FLT.2)” is proven for the complete TSF. The tests must also cover functions which may be affected by “ageing” (such as EEPROM NVM writing). 229 The existence and effectiveness of measures against physical attacks (as specified by the functional requirement FPT_PHP.3) cannot be tested in a straightforward way. Instead STMicroelectronics provides evidence that the TOE actually has the particular physical characteristics (especially layout design principles). This is done by checking the layout (implementation or actual) in an appropriate way. The required evidence pertains to the existence of mechanisms against physical attacks (unless being obvious). 230 The IC Dedicated Test Software is seen as a “test tool” being delivered as part of the TOE. However, the Test Features do not provide security functionality. Therefore, Test Features need not to be covered by the Test Coverage Analysis but all functions and mechanisms which limit the capability of the functions (cf. FMT_LIM.1) and control access to the functions (cf. FMT_LIM.2) provided by the IC Dedicated Test Software must be part of the Test Coverage Analysis. The IC Dedicated Software provides security functionalities as soon as the TOE becomes operational (boot software). These are part of the Test Coverage Analysis. 5.4 Security Requirements rationale 5.4.1 Rationale for the Security Functional Requirements 231 Just as for the security objectives rationale of Section 4.3, the main line of this rationale is that the inclusion of all the security requirements of the BSI-CC-PP-0084-2014 protection profile, together with those in AUG, and with those introduced in this Security Target, guarantees that all the security objectives identified in Section 4 are suitably addressed by the security requirements stated in this chapter, and that the latter together form an internally consistent whole. Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 48/78 SMD_ST33G1M2AM_ST_19_002 Table 12. Security Requirements versus Security Objectives Security Objective TOE Security Functional and Assurance Requirements BSI.O.Leak-Inherent Basic internal transfer protection FDP_ITT.1 Basic internal TSF data transfer protection FPT_ITT.1 Subset information flow control FDP_IFC.1 BSI.O.Phys-Probing Stored data confidentiality FDP_SDC.1 Resistance to physical attack FPT_PHP.3 BSI.O.Malfunction Limited fault tolerance FRU_FLT.2 Failure with preservation of secure state FPT_FLS.1 BSI.O.Phys-Manipulation Stored data integrity monitoring and action FDP_SDI.2 Resistance to physical attack FPT_PHP.3 BSI.O.Leak-Forced All requirements listed for BSI.O.Leak-Inherent FDP_ITT.1, FPT_ITT.1, FDP_IFC.1 plus those listed for BSI.O.Malfunction and BSI.O.Phys- Manipulation FRU_FLT.2, FPT_FLS.1, FDP_SDI.2, FPT_PHP.3 BSI.O.Abuse-Func Limited capabilities FMT_LIM.1 / Test Limited availability FMT_LIM.2 / Test plus those for BSI.O.Leak-Inherent, BSI.O.Phys-Probing, BSI.O.Malfunction, BSI.O.Phys-Manipulation, BSI.O.Leak-Forced FDP_ITT.1, FPT_ITT.1, FDP_IFC.1, FDP_SDC.1, FDP_SDI.2, FPT_PHP.3, FRU_FLT.2, FPT_FLS.1 BSI.O.Identification Audit storage FAU_SAS.1 BSI.O.RND Random number generation FCS_RNG.1 plus those for BSI.O.Leak-Inherent, BSI.O.Phys-Probing, BSI.O.Malfunction, BSI.O.Phys-Manipulation, BSI.O.Leak-Forced FDP_ITT.1, FPT_ITT.1, FDP_IFC.1, FDP_IFC.1, FDP_SDC.1, FPT_PHP.3, FRU_FLT.2, FPT_FLS.1 BSI.OE.Resp-Appl Not applicable BSI.OE.Process-Sec-IC Not applicable AUG1.O.Add-Functions Cryptographic operation FCS_COP.1 Cryptographic key generation FCS_CKM.1 AUG4.O.Mem-Access Complete access control FDP_ACC.2 / Memories Security attribute based access control FDP_ACF.1 / Memories Static attribute initialisation FMT_MSA.3 / Memories Management of security attribute FMT_MSA.1 / Memories Specification of management functions FMT_SMF.1 / Memories BSI.O.Cap-Avail-Loader Limited capabilities FMT_LIM.1 / Loader Limited availability FMT_LIM.2 / Loader ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 49/78 232 As origins of security objectives have been carefully kept in their labelling, and origins of security requirements have been carefully identified in Table 7 and Table 12, it can be verified that the justifications provided by the BSI-CC-PP-0084-2014 protection profile and AUG can just be carried forward to their union. 233 From Table 5, it is straightforward to identify additional security objectives for the TOE (AUG1.O.Add-Functions and AUG4.O.Mem-Access) tracing back to AUG, and additional objectives (O.Controlled-ES-Loading, O.Resp-Appl, and O.Firewall) introduced in this Security Target. This rationale must show that security requirements suitably address them all. 234 Furthermore, a careful observation of the requirements listed in Table 7 and Table 12 shows that: • there are security requirements introduced from AUG (FCS_COP.1, FDP_ACC.2 / Memories, FDP_ACF.1 / Memories, FMT_MSA.3 / Memories and FMT_MSA.1 / Memories), • there are additional security requirements introduced by this Security Target (FCS_CKM.1, FDP_ITC.1 / Loader, FDP_ACC.1 / Loader, FDP_ACF.1 / Loader, FMT_MSA.3 / Loader, FMT_MSA.1 / Loader, FMT_SMF.1 / Loader, FMT_SMR.1 / Loader, FIA_UID.1 / Loader, FMT_SMF.1 / Memories, FDP_ACC.1 / APPLI_FWL, FDP_ACF.1 / APPLI_FWL, and FMT_MSA.3 / APPLI_FWL, and various assurance requirements of EAL5+). 235 Though it remains to show that: • security objectives from this Security Target and from AUG are addressed by security requirements stated in this chapter, • additional security requirements from this Security Target and from AUG are mutually supportive with the security requirements from the BSI-CC-PP-0084-2014 protection profile, and they do not introduce internal contradictions, • all dependencies are still satisfied. 236 The justification that the additional security objectives are suitably addressed, that the additional security requirements are mutually supportive and that, together with those already in BSI-CC-PP-0084-2014, they form an internally consistent whole, is provided in O.Controlled-ES-Loading Import of user data without security attributes FDP_ITC.1 / Loader Subset access control FDP_ACC.1 / Loader Security attribute based access control FDP_ACF.1 / Loader Static attribute initialisation FMT_MSA.3 / Loader Management of security attribute FMT_MSA.1 / Loader Specification of management functions FMT_SMF.1 / Loader Security roles FMT_SMR.1 / Loader Timing of identification FIA_UID.1 / Loader O.Resp-Appl All SFRs defined additionnaly in the ST O.Firewall Subset access control FDP_ACC.1 / APPLI_FWL Security attribute based access control FDP_ACF.1 / APPLI_FWL Static attribute initialisation FMT_MSA.3 / APPLI_FWL Table 12. Security Requirements versus Security Objectives Security Objective TOE Security Functional and Assurance Requirements Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 50/78 SMD_ST33G1M2AM_ST_19_002 the next subsections. 5.4.2 Additional security objectives are suitably addressed Security objective “Dynamic Area based Memory Access Control (AUG4.O.Mem-Access)” 237 The justification related to the security objective “Dynamic Area based Memory Access Control (AUG4.O.Mem-Access)” is as follows: 238 The security functional requirements "Complete access control (FDP_ACC.2) / Memories" and "Security attribute based access control (FDP_ACF.1) / Memories", with the related Security Function Policy (SFP) “Dynamic Memory Access Control Policy” exactly require to implement a Dynamic area based memory access control as demanded by AUG4.O.Mem-Access. Therefore, FDP_ACC.2 / Memories and FDP_ACF.1 / Memories with their SFP are suitable to meet the security objective. 239 The security functional requirement "Static attribute initialisation (FMT_MSA.3) / Memories" requires that the TOE provides default values for security attributes. The ability to update the security attributes is restricted to privileged subject(s) as further detailed in the security functional requirement "Management of security attributes (FMT_MSA.1) / Memories". These management functions ensure that the required access control can be realised using the functions provided by the TOE. Security objective “Additional Specific Security Functionality (AUG1.O.Add- Functions)” 240 The justification related to the security objective “Additional Specific Security Functionality (AUG1.O.Add-Functions)” is as follows: 241 The security functional requirements “Cryptographic operation (FCS_COP.1)” and "Cryptographic key generation (FCS_CKM.1)" exactly require those functions to be implemented that are demanded by AUG1.O.Add-Functions. Therefore, FCS_COP.1 is suitable to meet the security objective, together with FCS_CKM.1. Security objective “Controlled loading of the Security IC Embedded Software (O.Controlled-ES-Loading)” 242 The justification related to the security objective “Controlled loading of the Security IC Embedded Software (O.Controlled-ES-Loading)” is as follows: 243 The security functional requirements "Import of user data without security attributes (FDP_ITC.1) / Loader", "Subset access control (FDP_ACC.1) / Loader" and "Security attribute based access control (FDP_ACF.1) / Loader", with the related Security Function Policy (SFP) “Loading Access Control Policy” exactly require to implement a controlled loading of the Security IC Embedded Software as demanded by O.Controlled-ES-Loading. Therefore, FDP_ITC.1 / Loader, FDP_ACC.1 / Loader and FDP_ACF.1 / Loader with their SFP are suitable to meet the security objective. 244 The security functional requirement "Static attribute initialisation (FMT_MSA.3) / Loader" requires that the TOE provides default values for security attributes. The ability to update the security attributes is restricted to privileged subject(s) as further detailed in the security functional requirement "Management of security attributes (FMT_MSA.1) / Loader". The security functional requirements"Security roles (FMT_SMR.1) / Loader" and "Timing of identification (FIA_UID.1) / Loader" specifies the roles that the TSF recognises and the actions authorised before their identification.The security functional requirement ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 51/78 "Specification of management functions (FMT_SMF.1) / Loader" provides additional controlled facility for adapting the loader behaviour to the user’s needs. These management functions ensure that the required access control, associated to the loading feature, can be realised using the functions provided by the TOE. Security objective “Treatment of user data (O.Resp-Appl)” 245 The justification related to the security objective “Treatment of user data (O.Resp-Appl)” is as follows: 246 The objective was translated from an environment objective in the PP into a TOE objective in this ST. The objective is that “Security relevant User Data (especially cryptographic keys) are treated by the Security IC Embedded Software as required by the security needs of the specific application context.” The application context is defined by the security environment described in this ST. The additional SFRs defined in this ST do address the additional TOE objectives of the ST based on the ST security environment, therefore O.Resp-Appl is fulfilled by the additional ST SFRs. Security objective “Application firewall (O.Firewall)” 247 The justification related to the security objective “Application firewall (O.Firewall)” is as follows: 248 The security functional requirements "Subset access control (FDP_ACC.1) / APPLI_FWL" and "Security attribute based access control (FDP_ACF.1) / APPLI_FWL", supported by "Static attribute initialisation (FMT_MSA.3) / APPLI_FWL", require that no application can read, write, compare any piece of data or code belonging to a Protected Application. This meets the objective O.Firewall. 5.4.3 Additional security requirements are consistent "Cryptographic operation (FCS_COP.1) & key generation (FCS_CKM.1)" 249 These security requirements have already been argued in Section : Security objective “Additional Specific Security Functionality (AUG1.O.Add-Functions)” above. "Static attribute initialisation (FMT_MSA.3 / Memories), Management of security attributes (FMT_MSA.1 / Memories), Complete access control (FDP_ACC.2 / Memories), Security attribute based access control (FDP_ACF.1 / Memories)" 250 These security requirements have already been argued in Section : Security objective “Dynamic Area based Memory Access Control (AUG4.O.Mem-Access)” above. Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 52/78 SMD_ST33G1M2AM_ST_19_002 "Import of user data without security attribute (FDP_ITC.1 / Loader), Static attribute initialisation (FMT_MSA.3 / Loader), Management of security attributes (FMT_MSA.1 / Loader), Subset access control (FDP_ACC.1 / Loader), Security attribute based access control (FDP_ACF.1 / Loader), Specification of management function (FMT_SMF.1 / Loader), Security roles (FMT_SMR.1 / Loader), Timing of identification(FIA_UID.1 / Loader)" 251 These security requirements have already been argued in Section : Security objective “Controlled loading of the Security IC Embedded Software (O.Controlled-ES-Loading)” above. "Subset access control (FDP_ACC.1 / APPLI_FWL), Security attribute based access control (FDP_ACF.1 / APPLI_FWL), Static attribute initialisation (FMT_MSA.3 / APPLI_FWL), 252 These security requirements have already been argued in Section : Security objective “Application firewall (O.Firewall)” above. 5.4.4 Dependencies of Security Functional Requirements 253 All dependencies of Security Functional Requirements have been fulfilled in this Security Target except : • those justified in the BSI-CC-PP-0084-2014 protection profile security requirements rationale, • those justifed in AUG security requirements rationale, • the dependency of FCS_COP.1 and FCS_CKM.1 on FCS_CKM.4 (see discussion below). • the dependency of FMT_MSA.3 / APPLI_FWL on FMT_MSA.1 and FMT_SMR.1 (see discussion below). 254 Details are provided in Table 13 below. Table 13. Dependencies of security functional requirements Label Dependencies Fulfilled by security requirements in this Security Target Dependency already in BSI-CC-PP-0084-2014 or in AUG FRU_FLT.2 FPT_FLS.1 Yes Yes, BSI-CC-PP-0084-2014 FPT_FLS.1 None No dependency Yes, BSI-CC-PP-0084-2014 FMT_LIM.1 / Test FMT_LIM.2 / Test Yes Yes, BSI-CC-PP-0084-2014 FMT_LIM.2 / Test FMT_LIM.1 / Test Yes Yes, BSI-CC-PP-0084-2014 FMT_LIM.1 / Loader FMT_LIM.2 / Loader Yes Yes, BSI-CC-PP-0084-2014 FMT_LIM.2 / Loader FMT_LIM.1 / Loader Yes Yes, BSI-CC-PP-0084-2014 FAU_SAS.1 None No dependency Yes, BSI-CC-PP-0084-2014 FDP_SDC.1 None No dependency Yes, BSI-CC-PP-0084-2014 ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 53/78 FDP_SDI.2 None No dependency Yes, BSI-CC-PP-0084-2014 FPT_PHP.3 None No dependency Yes, BSI-CC-PP-0084-2014 FDP_ITT.1 FDP_ACC.1 or FDP_IFC.1 Yes Yes, BSI-CC-PP-0084-2014 FPT_ITT.1 None No dependency Yes, BSI-CC-PP-0084-2014 FDP_IFC.1 FDP_IFF.1 No, see BSI-CC-PP- 0084-2014 Yes, BSI-CC-PP-0084-2014 FCS_RNG.1 None No dependency Yes, BSI-CC-PP-0084-2014 FCS_COP.1 [FDP_ITC.1 or FDP_ITC.2 or FCS_CKM.1] Yes, by FDP_ITC.1 and FCS_CKM.1, see discussion below Yes, AUG #1 FCS_CKM.4 No, see discussion below FCS_CKM.1 [FDP_CKM.2 or FCS_COP.1] Yes, by FCS_COP.1 FCS_CKM.4 No, see discussion below FDP_ACC.2 / Memories FDP_ACF.1 / Memories Yes No, CCMB-2017-04-002 R5 FDP_ACF.1 / Memories FDP_ACC.1 / Memories Yes, by FDP_ACC.2 / Memories Yes, AUG #4 FMT_MSA.3 / Memories Yes FMT_MSA.3 / Memories FMT_MSA.1 / Memories Yes Yes, AUG #4 FMT_SMR.1 / Memories No, see AUG #4 FMT_MSA.1 / Memories [FDP_ACC.1 / Memories or FDP_IFC.1] Yes, by FDP_ACC.2 / Memories and FDP_IFC.1 Yes, AUG #4 FMT_SMF.1 / Memories Yes No, CCMB-2017-04-002 R5 FMT_SMR.1 / Memories No, see AUG #4 Yes, AUG #4 FMT_SMF.1 / Memories None No dependency No, CCMB-2017-04-002 R5 Table 13. Dependencies of security functional requirements (continued) Label Dependencies Fulfilled by security requirements in this Security Target Dependency already in BSI-CC-PP-0084-2014 or in AUG Security requirements (ASE_REQ) ST33G1M2AM C01 Security Target for composition 54/78 SMD_ST33G1M2AM_ST_19_002 255 Part 2 of the Common Criteria defines the dependency of "Cryptographic operation (FCS_COP.1)" on "Import of user data without security attributes (FDP_ITC.1)" or "Import of user data with security attributes (FDP_ITC.2)" or "Cryptographic key generation (FCS_CKM.1)". In this particular TOE, both "Cryptographic key generation (FCS_CKM.1)" FMT_ITC.1 / Loader [FDP_ACC.1 / Loader or FDP_IFC.1] Yes No, CCMB-2017-04-002 R5 FMT_MSA.3 / Loader Yes FDP_ACC.1 / Loader FDP_ACF.1 / Loader Yes No, CCMB-2017-04-002 R5 FDP_ACF.1 / Loader FDP_ACC.1 / Loader Yes No, CCMB-2017-04-002 R5 FMT_MSA.3 / Loader Yes FMT_MSA.3 / Loader FMT_MSA.1 / Loader Yes No, CCMB-2017-04-002 R5 FMT_SMR.1 / Loader Yes FMT_MSA.1 / Loader [FDP_ACC.1 / Loader or FDP_IFC.1] Yes No, CCMB-2017-04-002 R5 FDP_SMF.1 / Loader Yes FDP_SMR.1 / Loader Yes FMT_SMR.1 / Loader FIA_UID.1 / Loader Yes No, CCMB-2017-04-002 R5 FIA_UID.1 / Loader None No dependency No, CCMB-2017-04-002 R5 FDP_SMF.1 / Loader None No dependency No, CCMB-2017-04-002 R5 FDP_ACC.1 / APPLI_FWL FDP_ACF.1 / APPLI_FWL Yes No, CCMB-2017-04-002 R5 FDP_ACF.1 / APPLI_FWL FDP_ACC.1 / APPLI_FWL Yes No, CCMB-2017-04-002 R5 FMT_MSA.3 / APPLI_FWL Yes FMT_MSA.3 / APPLI_FWL FMT_MSA.1 No, see discussion below No, CCMB-2017-04-002 R5 FMT_SMR.1 No, see discussion below Table 13. Dependencies of security functional requirements (continued) Label Dependencies Fulfilled by security requirements in this Security Target Dependency already in BSI-CC-PP-0084-2014 or in AUG ST33G1M2AM C01 Security Target for composition Security requirements (ASE_REQ) SMD_ST33G1M2AM_ST_19_002 55/78 and "Import of user data without security attributes (FDP_ITC.1) / Loader" may be used for the purpose of creating cryptographic keys, but also, the ES has all possibilities to implement its own creation function, in conformance with its security policy. 256 Part 2 of the Common Criteria defines the dependency of "Cryptographic operation (FCS_COP.1)" and "Cryptographic key generation (FCS_CKM.1)" on "Cryptographic key destruction (FCS_CKM.4)". In this particular TOE, there is no specific function for the destruction of the keys. The ES has all possibilities to implement its own destruction function, in conformance with its security policy. Therefore, FCS_CKM.4 is not defined in this ST. 257 Part 2 of the Common Criteria defines the dependency of "Static attribute initialisation (FMT_MSA.3) / APPLI_FWL" on "Management of security attributes (FMT_MSA.1)" and "Security roles (FMT_SMR.1)". For this particular instantiation of the access control attributes aimed at protecting a Protected Application code and data from unauthorised accesses, the security attributes are only static, initialized at product start. Therefore, there is no need to identify management capabilities and associated roles in form of Security Functional Requirements "FMT_MSA.1" and "FMT_SMR.1". 5.4.5 Rationale for the Assurance Requirements Security assurance requirements added to reach EAL5 (Table 10) 258 Regarding application note 21 of BSI-CC-PP-0084-2014, this Security Target chooses EAL5 with augmentations because developers and users require a high level of independently assured security in a planned development and require a rigorous development approach without incurring unreasonable costs attributable to specialist security engineering techniques. 259 EAL5 represents a meaningful increase in assurance from EAL4 by requiring semiformal design descriptions, a more structured (and hence analyzable) architecture, and improved mechanisms and/or procedures that provide confidence that the TOE will not be tampered during development. 260 The assurance components in an evaluation assurance level (EAL) are chosen in a way that they build a mutually supportive and complete set of components. All dependencies introduced by the requirements chosen for augmentation are fulfilled. Therefore, these components add additional assurance to EAL5, but the mutual support of the requirements and the internal consistency is still guaranteed. 261 Note that detailed and updated refinements for assurance requirements are given in Section 5.3. Dependencies of assurance requirements 262 Dependencies of security assurance requirements are fulfilled by the EAL5 package selection. 263 The augmentation to this package are identified in paragraph 214 and do not introduce dependencies not already satisfied by the EAL5 package. TOE summary specification (ASE_TSS) ST33G1M2AM C01 Security Target for composition 56/78 SMD_ST33G1M2AM_ST_19_002 6 TOE summary specification (ASE_TSS) 264 This section demonstrates how the TOE meets each Security Functional Requirement, which will be further detailed in the ADV_FSP documents. 6.1 Limited fault tolerance (FRU_FLT.2) 265 The TSF provides limited fault tolerance, by managing a certain number of faults or errors that may happen, related to random number generation, power supply, data flows and cryptographic operations, thus preventing risk of malfunction. 6.2 Failure with preservation of secure state (FPT_FLS.1) 266 The TSF provides preservation of secure state by detecting and managing the following failures: • Die integrity violation detection, • Errors on memories and registers, • Glitches, • High voltage supply, • CPU errors, • MPU errors, • Faults on crypto processors or libraries, • etc.. 267 The ES can generate a software reset, either simple or infinite (reset and wait). 6.3 Limited capabilities (FMT_LIM.1) / Test 268 The TSF ensures that only very limited test capabilities are available in User configuration, in accordance with SFP_1: Limited capability and availability Policy / Test. 6.4 Limited capabilities (FMT_LIM.1) / Loader 269 The TSF ensures that the Secure Flash Loader and the final test capabilities are unavailable in User configuration, in accordance with SFP_4: Loader Limited capability Policy. 6.5 Limited availability (FMT_LIM.2) / Test & (FMT_LIM.2) / Loader 270 The TOE is either in Test, Admin (aka Issuer) or User configuration. 271 The TSF ensures the switching and the control of TOE configuration. ST33G1M2AM C01 Security Target for composition TOE summary specification (ASE_TSS) SMD_ST33G1M2AM_ST_19_002 57/78 272 The TSF reduces the available features depending on the TOE configuration: • the full test features are unavailable in User and Admin configuration, • the Secure Flash Loader and the Final Test OS are unavailable in User configuration, • the diagnostic test features are reserved to ST in User and Admin configuration. 6.6 Stored data confidentiality (FDP_SDC.1) 273 The TSF ensures confidentiality of the User Data, thanks to the following features: • Memories scrambling and encryption, • Protection of NVM sectors, • MPU, • LPU. 6.7 Stored data integrity monitoring and action (FDP_SDI.2) 274 The TSF ensures stored data integrity, thanks to the following features: • Memories parity control, • Protection of NVM sectors, • MPU, • LPU. 6.8 Audit storage (FAU_SAS.1) 275 In User configuration, the TOE provides commands to store data and/or pre-personalisation data and/or supplements of the ES in the NVM. These commands are only available to authorized processes, and only until phase 6. 6.9 Resistance to physical attack (FPT_PHP.3) 276 The TSF ensures resistance to physical tampering, thanks to the following features: • The TOE implements a set of countermeasures that reduce the exploitability of physical probing. • The TOE is physically protected by active shields that command an automatic reaction on die integrity violation detection. TOE summary specification (ASE_TSS) ST33G1M2AM C01 Security Target for composition 58/78 SMD_ST33G1M2AM_ST_19_002 6.10 Basic internal transfer protection (FDP_ITT.1), Basic internal TSF data transfer protection (FPT_ITT.1) & Subset information flow control (FDP_IFC.1) 277 The TSF prevents the disclosure of internal and user data thanks to: • Memories scrambling and encryption, • Bus encryption, • RAM content destruction and register cleaning upon reset, • Clocks jittering, • Mechanisms for operation execution concealment. 6.11 Random number generation (FCS_RNG.1) 278 The TSF provides 8-bit true random numbers that can be qualified with the test metrics required by the BSI-AIS20/AIS31 standard for a PTG.2 class device. 6.12 Cryptographic operation: EDES operation (FCS_COP.1) / EDES 279 The TOE provides an EDES+ accelerator that has the capability to perform 3-key Triple DES(d) encryption and decryption in Electronic Code Book (ECB) and Cipher Block Chaining (CBC) mode conformant to NIST SP 800-67 and NIST SP 800-38A. If NesLib is embedded, the cryptographic library NesLib instantiates the same standard DES cryptographic operations, in Electronic Code Book (ECB) and Cipher Block Chaining (CBC) mode. 6.13 Cryptographic operation: AES operation (FCS_COP.1) / AES 280 The AES accelerator provides the following standard AES cryptographic operations for key sizes of 128, 192 and 256 bits, conformant to FIPS PUB 197 with intrinsic counter-measures against attacks: • cipher, • inverse cipher. 281 The AES accelerator can operate in Electronic Code Book (ECB) and Cipher Block Chaining (CBC) mode. 282 If NesLib is embedded, the cryptographic library NesLib instantiates the same standard AES cryptographic operations, in Electronic Code Book (ECB) and Cipher Block Chaining (CBC) mode, and additionally provides: • message authentication Code computation (CMAC), • authenticated encryption/decryption in Galois Counter Mode (GCM), • authenticated encryption/decryption in Counter with CBC-MAC (CCM). d. Note that DES and triple DES with two keys are no longer recommended as encryption functions. Hence, Security IC Embedded Software may need to use triple DES with three keys to achieve a suitable strength. ST33G1M2AM C01 Security Target for composition TOE summary specification (ASE_TSS) SMD_ST33G1M2AM_ST_19_002 59/78 6.14 Cryptographic operation: RSA operation (FCS_COP.1) / RSA, only if NesLib 283 The cryptographic library NesLib provides to the ES developer the following RSA functions, all conformant to PKCS #1 V2.1: • RSA public key cryptographic operation for modulus sizes up to 4096 bits, • RSA private key cryptographic operation with or without CRT for modulus sizes up to 4096 bits, • RSA signature formatting, • RSA Key Encapsulation Method. 6.15 Cryptographic operation: Elliptic Curves Cryptography operation (FCS_COP.1) / ECC, only if NesLib 284 The cryptographic library NesLib provides to the ES developer the following efficient basic functions for Elliptic Curves Cryptography over prime fields on curves in Weierstrass form, all conformant to IEEE 1363-2000 and IEEE 1363a-2004, including: • private scalar multiplication, • preparation of Elliptic Curve computations in affine coordinates, • public scalar multiplication, • point validity check, • Jacobian conversion to affine coordinates, • general point addition, • point expansion and compression. 285 Additionally, the cryptographic library NesLib provides functions dedicated to the two most used elliptic curves cryptosystems: • Elliptic Curve Diffie-Hellman (ECDH), as specified in NIST SP 800-56A, • Elliptic Curve Digital Signature Algorithm (ECDSA) generation and verification, as stipulated in FIPS PUB 186-4 and specified in ANSI X9.62, section 7. 286 The cryptographic library NesLib provides to the ES developer the following efficient basic functions for Elliptic Curves Cryptography over prime fields on curves in Edwards form, with curve 25519, all conformant to EdDSA rfc, including: • generation, • verification, • point decompression. 6.16 Cryptographic operation: SHA-1 & SHA-2 operation (FCS_COP.1) / SHA, only if NesLib 287 The cryptographic library NesLib provides the SHA-1(e), SHA-224, SHA-256, SHA-384, SHA-512 secure hash functions conformant to FIPS PUB 180-2. e. Note that SHA-1 is no longer recommended as a cryptographic function in the context of smart card applications. Hence, Security IC Embedded Software may need to use another SHA to achieve a suitable strength. TOE summary specification (ASE_TSS) ST33G1M2AM C01 Security Target for composition 60/78 SMD_ST33G1M2AM_ST_19_002 288 The cryptographic library NesLib provides the SHA-1, SHA-256, SHA-384, SHA-512 secure hash functions conformant to FIPS PUB 180-2, and offering resistance against side channel and fault attacks. 289 Additionally, the cryptographic library NesLib offers support for the HMAC mode of use, as specified in FIPS PUB 198-1, to be used in conjunction with the protected versions of SHA- 1 or SHA-256. 6.17 Cryptographic operation: Keccak & SHA-3 operation (FCS_COP.1) / Keccak, only if NesLib 290 The cryptographic library NesLib provides the operation of the following extendable output functions conformant to FIPS PUB 202: • SHAKE128, • SHAKE256, • Keccak[r,c] with choice of r < 1600 and c = 1600 - r. 291 The cryptographic library NesLib provides the operation of the following hash functions, conformant to FIPS PUB 202: • SHA3-224, • SHA3-256, • SHA3-384, • SHA3-512. 292 The cryptographic library NesLib provides the operation of the following extendable output functions conformant to FIPS PUB 202, offering resistance against side channel and fault attacks: • SHAKE128, • SHAKE256, • Keccak[r,c] with choice of r < 1600 and c = 1600 - r. 293 The cryptographic library NesLib provides the operation of the following hash functions, conformant to FIPS PUB 202, offering resistance against side channel and fault attacks: • SHA3-224, • SHA3-256, • SHA3-384, • SHA3-512. ST33G1M2AM C01 Security Target for composition TOE summary specification (ASE_TSS) SMD_ST33G1M2AM_ST_19_002 61/78 6.18 Cryptographic operation: Keccak-p operation (FCS_COP.1) / Keccak-p, only if NesLib 294 The cryptographic library NesLib provides a toolbox for building modes on top of the following permutations, conformant to FIPS PUB 202: • Keccak-p[1600,n_r = 24], • Keccak-p[1600,n_r = 12]. • The cryptographic library NesLib provides a toolbox for building modes on top of the following permutations, conformant to FIPS PUB 202, offering resistance against side channel and fault attacks: • Keccak-p[1600,n_r = 24], • Keccak-p[1600,n_r = 12]. 6.19 Cryptographic operation: Diffie-Hellman operation (FCS_COP.1) / Diffie-Hellman, only if NesLib 295 The cryptographic library NesLib provides the Diffie-Hellman key establishment operation over GF(p) for size of modulus p up to 4096 bits, conformant to ANSI X9.42. 6.20 Cryptographic operation: DRBG operation (FCS_COP.1) / DRBG, only if NesLib 296 The cryptographic library NesLib gives support for a DRBG generator, based on cryptographic algorithms specified in NIST SP 800-90. 297 The cryptographic library NesLib implements two of the DRBG specified in NIST SP 800-90: • Hash-DRBG, • CTR-DRBG. 6.21 Cryptographic key generation: Prime generation (FCS_CKM.1) / Prime_generation, only if NesLib 298 The cryptographic library NesLib provides prime numbers generation for prime sizes up to 2048 bits conformant to FIPS PUB 140-2 and FIPS PUB 186-4, optionally with conditions and/or optionally offering resistance against side channel and fault attacks. 6.22 Cryptographic key generation: RSA key generation (FCS_CKM.1) / RSA_key_generation, only if NesLib 299 The cryptographic library NesLib provides standard RSA public and private key computation for key sizes upto 4096 bits conformant to FIPS PUB 140-2, ISO/IEC 9796-2 and PKCS #1 V2.1, optionally with conditions and/or optionally offering resistance against side channel and fault attacks. TOE summary specification (ASE_TSS) ST33G1M2AM C01 Security Target for composition 62/78 SMD_ST33G1M2AM_ST_19_002 6.23 Static attribute initialisation (FMT_MSA.3) / Memories 300 The TOE enforces a default memory protection policy when none other is programmed by the ES. 6.24 Management of security attributes (FMT_MSA.1) / Memories & Specification of management functions (FMT_SMF.1) / Memories 301 The TOE provides a dynamic Memory Protection Unit (MPU), that can be configured by the ES. 6.25 Complete access control (FDP_ACC.2) / Memories & Security attribute based access control (FDP_ACF.1) / Memories 302 The TOE enforces the dynamic memory protection policy for data access and code access thanks to a dynamic Memory Protection Unit (MPU), programmed by the ES. Overriding the MPU set of access rights, the TOE enforces additional protections on specific parts of the memories. 6.26 Static attribute initialisation (FMT_MSA.3) / Loader 303 In Admin configuration, the System Firmware provides restrictive default values for the Flash Loader security attributes. 6.27 Management of security attributes (FMT_MSA.1) / Loader & Specification of management functions (FMT_SMF.1) / Loader 304 In Admin configuration, the System Firmware provides the capability to change part of the Flash Loader security attributes, only once in the product lifecycle. 6.28 Subset access control (FDP_ACC.1) / Loader, Security attribute based access control (FDP_ACF.1) / Loader, Security roles (FMT_SMR.1) / Loader & Timing of identification (FIA_UID.1) / Loader 305 In Admin configuration, the System Firmware grants access to the Flash Loader functions, only after presentation of the required valid passwords. ST33G1M2AM C01 Security Target for composition TOE summary specification (ASE_TSS) SMD_ST33G1M2AM_ST_19_002 63/78 6.29 Import of user data without security attributes (FDP_ITC.1) / Loader 306 In Admin configuration, the System Firmware provides the capability of loading user data into the NVM, while ensuring confidentiality and integrity of the loaded data. 6.30 Subset access control (FDP_ACC.1) / APPLI_FWL & Security attribute based access control (FDP_ACF.1) / APPLI_FWL 307 The Library Protection Unit is used to isolate the Protected Application firmware (code and data) from the rest of the code embedded in the device. 6.31 Static attribute initialisation (FMT_MSA.3) / APPLI_FWL 308 At product start, all the static attributes are initialised, which are needed to protect the segments where the Protected Application code and data are stored. Identification ST33G1M2AM C01 Security Target for composition 64/78 SMD_ST33G1M2AM_ST_19_002 7 Identification Table 14. TOE components IC Maskset name IC version Master identification number Firmware version OST version Optional NesLib crypto library version K8H0A G 0061h 1.3.2 2.2 6.3.4 Table 15. Guidance documentation Component description Reference Version ST33G Platform - ST33G1M2A: M2M automotive-grade Secure MCU with 32-bit ARM® SecurCore® SC300TM CPU and high density Flash memory - Datasheet DS_ST33G1M2A 3 ST33G Platform - ST33G1M2M: M2M Industrial Secure MCU with 32-bit ARM® SecurCore® SC300TM CPU and high density Flash memory - Datasheet DS_ST33G1M2M 7 ST33G1M2A, ST33G1M2M: CMOS M10+ 80-nm technology die and wafer delivery description DD_ST33G1M2A_M 2 ARM® Cortex SC300 r0p0 Technical Reference Manual ARM DDI 0337F F ARM® Cortex M3 r2p0 Technical Reference Manual ARM DDI 0337F3c F3c ARM® SC300 r0p0 SecurCore Technical Reference Manual Supplement 1A ARM DDI 0337 Supp 1A A ARM® SecurCore® SC300 ES_SC300 1 ST33 ARM Execute-only memory support for SecurCore® SC300 devices - Application note AN_33_EXE 2 ST33 uniform timing application note AN_33_UT 2 ST33G1M2A / ST33G1M2M firmware - User manual UM_ST33G1M2A_M_FW 11 Flash memory loader installation guide for the ST33G1M2A and ST33G1M2M platforms - User manual UM_33GA_FL 3 ST33G and ST33H Firmware support for LPU regions - application note AN_33G_33H_LPU 1 ST33G and ST33H Secure MCU platforms - Security Guidance AN_SECU_ST33 9 ST33G and ST33H Power supply glitch detector characteristics - application note AN_33_GLITCH 2 ST33G and ST33H - AIS31 Compliant Random Number - User Manual UM_33G_33H_AIS31 3 ST33G and ST33H - AIS31 Reference implementation - Startup, online and total failure tests - User manual AN_33G_33H_AIS31 1 ST33G1M2AM C01 Security Target for composition Identification SMD_ST33G1M2AM_ST_19_002 65/78 NesLib cryptographic library NesLib 6.3 - User manual UM_NesLib_6.3 4 ST33G and ST33H secure MCU platforms - NesLib 6.3 security recommendations - Application note AN_SECU_ST33G_H_NES LIB_6.3 5 NesLib 6.3.4 for ST33G, ST33H and ST33I platforms - Release note RN_ST33_NESLIB_6.3.4 2 Table 15. Guidance documentation (continued) Component description Reference Version Table 16. Sites list Site Address Activities(1) Amkor ATP1 AMKOR ATP1 Km 22 East Service Road, South Superhighway, Muntinlupa City, 1771 Philippines BE Amkor ATP3/4 AMKOR ATP3/4 119 North Science Avenue, Laguna Technopark, Binan, Laguna, 4024 Philippines BE Amkor ATT1 AMKOR TECHNOLOGY TAIWAN, INC. (ATT) - T1 1F, No.1, Kao-Ping Sec, Chung-Feng Rd., Lungtan Township, Taoyuan County 325, Taiwan, R.O.C. BE Amkor ATT3 AMKOR TECHNOLOGY TAIWAN, INC. (ATT) - T3 11 Guangfu Road, Hsinchu Industrial Park, Hukou County, Hsinchu 303, Taiwan, R.O.C. BE DNP Japan DNP (Dai Nippon printing Co ltd.) 2-2-1 Kami-Fukuoka, Fujimino-shi, Saitama,356-8507, Japan MASK DPE Italy DPE (Dai Printing Europe) Via C. Olivetti, 2/A, I-20041 Agrate, Italy MASK Feiliks Feili Logistics (Shenzhen) CO., Ltd Zhongbao Logistics Building, No. 28 Taohua Road, FFTZ, Shenzhen, Guangdong 518038, China WHS Identification ST33G1M2AM C01 Security Target for composition 66/78 SMD_ST33G1M2AM_ST_19_002 Smartflex Smartflex Technology 37A Tampines Street 92, Singapore 528886 BE ST AMK1 STMicroelectronics 5A Serangoon North Avenue 5, Singapore 554574 DEV ST AMK6 STMicroelectronics 18 Ang Mo Kio Industrial park 2, Singapore 569505 WHS ST Bouskoura STMicroelectronics 101 Boulevard des Muriers – BP97, 20180 Bouskoura, Maroc BE WHS ST Calamba STMicroelectronics 9 Mountain Drive, LISP II, Brgy La mesa, Calamba, Philippines 4027 BE WHS ST Crolles STMicroelectronics 850 rue Jean Monnet, 38926 Crolles, France DEV MASK FE ST Gardanne CMP Georges Charpak 880 Avenue de Mimet, 13541 Gardanne, France BE ST Grenoble STMicroelectronics 12 rue Jules Horowitz, BP 217, 38019 Grenoble Cedex, France DEV ST Ljubljana STMicroelectronics d.o.o. Ljubljana Tehnoloski park 21, 1000 Ljubljana, Slovenia DEV ST Loyang STMicroelectronics 7 Loyang Drive, Singapore 508938 WHS Table 16. Sites list (continued) Site Address Activities(1) ST33G1M2AM C01 Security Target for composition Identification SMD_ST33G1M2AM_ST_19_002 67/78 ST Rennes STMicroelectronics 10 rue de Jouanet, ePark, 35700 Rennes, France DEV ST Rousset STMicroelectronics 190 Avenue Célestin Coq, Z.I., 13106 Rousset Cedex, France DEV EWS WHS FE ST Shenzen STS Microelectronics 16 Tao hua Rd., Futian free trade zone, Shenzhen, P.R. China 518038 BE ST Sophia STMicroelectronics 635 route des lucioles, 06560 Valbonne, France DEV ST Toa Payoh STMicroelectronics 629 Lorong 4/6 Toa Payoh, Singapore 319521 EWS ST Tunis STMicroelectronics Tunis Elgazala Technopark, Raoued, Gouvernorat de l’Ariana, PB21, 2088 cedex, Ariana, Tunisia IT ST Zaventem STMicroelectronics Green Square, Lambroekstraat 5, Building B, 3d floor, 1831 Diegem/Machelen, Belgium DEV STATS JSCC STATS ChipPAC Semiconductor Jiangyin CO. Ltd (JSCC) No. 78 Changshan Road, Jiangyin, Jiangsu, China, Postal code: 214437 BE TSMC F2/F5 TSMC FAB 2-5 121 Park Avenue 3, Hsinchu science park, Hsinchu 300-77, Taiwan, ROC MASK FE Table 16. Sites list (continued) Site Address Activities(1) Identification ST33G1M2AM C01 Security Target for composition 68/78 SMD_ST33G1M2AM_ST_19_002 TSMC F14 TSMC FAB 14 1-1 Nan Ke N. Rd. Tainan science park, Tainan 741_44, Taiwan, ROC MASK FE TSMC F8 TSMC FAB 8 25, Li-Hsin Road, Hsinchu Science Park, Hsinchu 300-78, Taiwan ROC MASK FE UTL1 UTAC Thai Limited 1 237 Lasalle Road, Bangna, Bangkok, 10260 Thailand BE UTL3 UTAC Thai Limited 3 73 Moo5, Bangsamak, Bangpakong, Chachoengsao, 24180 Thailand BE Winstek WINSTEK STATS ChipPAC (SCT) No 176-5, 6 Ling, Hualung Chun, Chiung Lin, 307 Hsinchu, Taiwan BE 1. DEV = development, FE = front end manudacturing, EWS = electrical wafer sort and pre-perso, BE = back end manufacturing, MASK = mask manufacturing, WHS = warehouse, IT = Network infrastructure Table 16. Sites list (continued) Site Address Activities(1) ST33G1M2AM C01 Security Target for composition References SMD_ST33G1M2AM_ST_19_002 69/78 8 References Table 17. Common Criteria Component description Reference Version Common Criteria for Information Technology Security Evaluation - Part 1: Introduction and general model, April 2017 CCMB-2017-04-001 R5 3.1 Rev 5 Common Criteria for Information Technology Security Evaluation - Part 2: Security functional components, April 2017 CCMB-2017-04-002 R5 3.1 Rev 5 Common Criteria for Information Technology Security Evaluation - Part 3: Security assurance components, April 2017 CCMB-2017-04-003 R5 3.1 Rev 5 Table 18. Protection Profile Component description Reference Version Eurosmart - Security IC Platform Protection Profile with Augmentation Packages BSI-CC-PP-0084-2014 1.0 Table 19. Other standards Ref Identifier Description [1] BSI-AIS20/AIS31 A proposal for: Functionality classes for random number generators, W. Killmann & W. Schindler BSI, Version 2.0, 18-09-2011 [2] NIST SP 800-67 NIST SP 800-67, Recommendation for the Triple Data Encryption Algorithm (TDEA) Block Cipher, revised January 2012, National Institute of Standards and Technology [3] FIPS PUB 140-2 FIPS PUB 140-2, Security Requirements for Cryptographic Modules, National Institute of Standards and Technology (NIST), up to change notice December 3, 2002 [4] FIPS PUB 180-2 FIPS PUB 180-2 Secure Hash Standard with Change Notice 1 dated February 25,2004, National Institute of Standards and Technology, U.S.A., 2004 [5] FIPS PUB 186-4 FIPS PUB 186-4, Digital Signature Standard (DSS), National Institute of Standards and Technology (NIST), July 2013 [6] FIPS PUB 197 FIPS PUB 197, Advanced Encryption Standard (AES), National Institute of Standards and Technology, U.S. Department of Commerce, November 2001 [7] ISO/IEC 9796-2 ISO/IEC 9796, Information technology - Security techniques - Digital signature scheme giving message recovery - Part 2: Integer factorization based mechanisms, ISO, 2002 References ST33G1M2AM C01 Security Target for composition 70/78 SMD_ST33G1M2AM_ST_19_002 [8] NIST SP 800-38A NIST SP 800-38A Recommendation for Block Cipher Modes of Operation, 2001, with Addendum Recommendation for Block Cipher Modes of Operation: Three Variants of Ciphertext Stealing for CBC Mode, October 2010 [9] NIST SP 800-38B NIST special publication 800-38B, Recommandation for Block Cipher Modes of Operation: The CMAC Mode for Authentication, National Institute of Standards and Technology (NIST), May 2005 [10] NIST SP 800-38C NIST special publication 800-38C, Recommendation for Block Cipher Modes of Operation: The CCM Mode for Authentication and Confidentiality, National Institute of Standards and Technology (NIST), May 2004 [11] NIST SP 800-38D NIST special publication 800-38D, Recommendation for Block Cipher Modes of Operation: Galois/Counter mode (GCM) and GMAC, National Institute of Standards and Technology (NIST), November 2007 [12] ISO/IEC 14888 ISO/IEC 14888, Information technology - Security techniques - Digital signatures with appendix - Part 1: General (1998), Part 2: Identity-based mechanisms (1999), Part 3: Certificate based mechanisms (2006), ISO [13] AUG Smartcard Integrated Circuit Platform Augmentations, Atmel, Hitachi Europe, Infineon Technologies, Philips Semiconductors, Version 1.0, March 2002. [14] MIT/LCS/TR-212 On digital signatures and public key cryptosystems, Rivest, Shamir & Adleman Technical report MIT/LCS/TR-212, MIT Laboratory for computer sciences, January 1979 [15] IEEE 1363-2000 IEEE 1363-2000, Standard Specifications for Public Key Cryptography, IEEE, 2000 [16] IEEE 1363a-2004 IEEE 1363a-2004, Standard Specifications for Public Key Cryptography - Amendment 1:Additional techniques, IEEE, 2004 [17] PKCS #1 V2.1 PKCS #1 V2.1 RSA Cryptography Standard, RSA Laboratories, June 2002 [18] MOV 97 Alfred J. Menezes, Paul C. van Oorschot and Scott A. Vanstone, Handbook of Applied Cryptography, CRC Press, 1997 [19] NIST SP 800-90 NIST Special Publication 800-90, Recommendation for random number generation using deterministic random bit generators (Revised), National Institute of Standards and Technology (NIST), March 2007 Table 19. Other standards Ref Identifier Description ST33G1M2AM C01 Security Target for composition References SMD_ST33G1M2AM_ST_19_002 71/78 [20] FIPS PUB 198-1 FIPS PUB 198-1, The Keyed-Hash Message Authentication Code (HMAC), National Institute of Standards and Technology (NIST), July 2008 [21] NIST SP 800-56A NIST SP 800-90A Revision 2, Recommendation for Pair-Wise Key Establishment Schemes Using Discrete Logarithm Cryptography, National Institute of Standards and Technology (NIST), May 2013 [22] ANSI X9.31 ANSI X9.31, Digital Signature Using Reversible Public Key Cryptography for the Financial Services Industry (rDSA), American National Standard for Financial Services, 1998 [23] ANSI X9.42 ANSI X9.42, Public Key Cryptography for the Financial Services Industry: Agreement of Symmetric Keys Using Discrete Logarithm Cryptography, American National Standard for Financial Services, 2003 (R2013) [24] ANSI X9.62 ANSI X9.62, Public Key Cryptography for the Financial Services Industry, The Elliptic Curve Digital Signature Algorithm (ECDSA), American National Standard for Financial Services, 2005 [25] FIPS PUB 202 FIPS PUB 202, SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions, August 2015 [26] EdDSA rfc S. Josefsson and I. Liusvaara,, Edwards-curve Digital Signature Algorithm (EdDSA) draft-irtf-cfrg-eddsa-08, Network Working Group Internet-Draft, IETF, August 19, 2016, available from https://tools.ietf.org/html/draft-irtf-cfrg-eddsa-08 [27] EDDSA Bernstein, D., Duif, N., Lange, T., Schwabe, P., and B. Yang, "High-speed high-security signatures", http://ed25519.cr.yp.to/ed25519-20110926.pdf September 2011 [28] EDDSA2 Bernstein, D., Josefsson, S., Lange, T., Schwabe, P., and B. Yang, "EdDSA for more curves", WWW http://ed25519.cr.yp.to/eddsa-20150704.pdf July 2015 Table 19. Other standards Ref Identifier Description Glossary ST33G1M2AM C01 Security Target for composition 72/78 SMD_ST33G1M2AM_ST_19_002 Appendix A Glossary A.1 Terms Authorised user A user who may, in accordance with the TSP, perform an operation. Composite product Security IC product which includes the Security Integrated Circuit (i.e. the TOE) and the Embedded Software and is evaluated as composite target of evaluation. End-consumer User of the Composite Product in Phase 7. Integrated Circuit (IC) Electronic component(s) designed to perform processing and/or memory functions. IC Dedicated Software IC proprietary software embedded in a Security IC (also known as IC firmware) and developed by ST. Such software is required for testing purpose (IC Dedicated Test Software) but may provide additional services to facilitate usage of the hardware and/or to provide additional services (IC Dedicated Support Software). IC Dedicated Test Software That part of the IC Dedicated Software which is used to test the TOE before TOE Delivery but which does not provide any functionality thereafter. IC developer Institution (or its agent) responsible for the IC development. IC manufacturer Institution (or its agent) responsible for the IC manufacturing, testing, and pre- personalization. IC packaging manufacturer Institution (or its agent) responsible for the IC packaging and testing. Initialisation data Initialisation Data defined by the TOE Manufacturer to identify the TOE and to keep track of the Security IC’s production and further life-cycle phases are considered as belonging to the TSF data. These data are for instance used for traceability and for TOE identification (identification data) Object An entity within the TSC that contains or receives information and upon which subjects perform operations. Packaged IC Security IC embedded in a physical package such as micromodules, DIPs, SOICs or TQFPs. Pre-personalization data Any data supplied by the Card Manufacturer that is injected into the non-volatile memory by the Integrated Circuits manufacturer (Phase 3). These data are for instance used for traceability and/or to secure shipment between phases. ST33G1M2AM C01 Security Target for composition Glossary SMD_ST33G1M2AM_ST_19_002 73/78 Secret Information that must be known only to authorised users and/or the TSF in order to enforce a specific SFP. Security IC Composition of the TOE, the Security IC Embedded Software, User Data, and the package. Security IC Embedded SoftWare (ES) Software embedded in the Security IC and not developed by the IC designer. The Security IC Embedded Software is designed in Phase 1 and embedded into the Security IC in Phase 3. Security IC embedded software (ES) developer Institution (or its agent) responsible for the security IC embedded software development and the specification of IC pre-personalization requirements, if any. Security attribute Information associated with subjects, users and/or objects that is used for the enforcement of the TSP. Sensitive information Any information identified as a security relevant element of the TOE such as: – the application data of the TOE (such as IC pre-personalization requirements, IC and system specific data), – the security IC embedded software, – the IC dedicated software, – the IC specification, design, development tools and technology. Smartcard A card according to ISO 7816 requirements which has a non volatile memory and a processing unit embedded within it. Subject An entity within the TSC that causes operations to be performed. Test features All features and functions (implemented by the IC Dedicated Software and/or hardware) which are designed to be used before TOE Delivery only and delivered as part of the TOE. TOE Delivery The period when the TOE is delivered which is after Phase 3 or Phase 4 in this Security target. TSF data Data created by and for the TOE, that might affect the operation of the TOE. User Any entity (human user or external IT entity) outside the TOE that interacts with the TOE. User data All data managed by the Smartcard Embedded Software in the application context. User data comprise all data in the final Smartcard IC except the TSF data. Glossary ST33G1M2AM C01 Security Target for composition 74/78 SMD_ST33G1M2AM_ST_19_002 A.2 Abbreviations Table 20. List of abbreviations Term Meaning AES Advanced Encryption Standard AIS Application notes and Interpretation of the Scheme (BSI). ALU Arithmetical and Logical Unit. BE Back End manufacturing. BSI Bundesamt für Sicherheit in der Informationstechnik. CBC Cipher Block Chaining. CBC-MAC Cipher Block Chaining Message Authentication Code. CC Common Criteria Version 3.1. R5. CPU Central Processing Unit. CRC Cyclic Redundancy Check. DCSSI Direction Centrale de la Sécurité des Systèmes d’Information. DES Data Encryption Standard. DEV Development. DIP Dual-In-Line Package. DRBG Deterministic Random Bit Generator. EAL Evaluation Assurance Level. ECB Electronic Code Book. ECC Elliptic Curve Cryptography. EDES Enhanced DES. EEPROM Electrically Erasable Programmable Read Only Memory. ES Security IC Embedded Software. EWS Electrical Wafer Sort. FE Front End manufacturing. FIPS Federal Information Processing Standard. FTOS Final Test Operating System. GPIO General Purpose I/O. HMAC Keyed-Hash Message Authentication Code. I/O Input / Output. IC Integrated Circuit. ISO International Standards Organisation. IT Information Technology. ST33G1M2AM C01 Security Target for composition Glossary SMD_ST33G1M2AM_ST_19_002 75/78 LPU Library Protection Unit. MASK Mask manufacturing. MPU Memory Protection Unit. NESCRYPT Next Step Cryptography Accelerator. NFC Near Field Communication. NIST National Institute of Standards and Technology. NVM Non Volatile Memory. OSP Organisational Security Policy. OST Operating System for Test. PP Protection Profile. PUB Publication Series. RAM Random Access Memory. RF Radio Frequency. RF UART Radio Frequency Universal Asynchronous Receiver Transmitter. ROM Read Only Memory. RSA Rivest, Shamir & Adleman. SAR Security Assurance Requirement. SFP Security Function Policy. SFR Security Functional Requirement. SHA Secure Hash Algorithm. SIM Subscriber Identity Module. SOIC Small Outline IC. SPI Serial Peripheral Interface. ST Context dependent : STMicroelectronics or Security Target. SWP Single Wire Protocol. TOE Target of Evaluation. TQFP Thin Quad Flat Package. TRNG True Random Number Generator. TSC TSF Scope of Control. TSF TOE Security Functionality. TSFI TSF Interface. TSP TOE Security Policy. TSS TOE Summary Specification. Table 20. List of abbreviations (continued) Term Meaning Glossary ST33G1M2AM C01 Security Target for composition 76/78 SMD_ST33G1M2AM_ST_19_002 UID User Identification. WHS Warehouse. Table 20. List of abbreviations (continued) Term Meaning ST33G1M2AM C01 Security Target for composition Glossary SMD_ST33G1M2AM_ST_19_002 77/78 ST33G1M2AM C01 Security Target for composition 78/78 SMD_ST33G1M2AM_ST_19_002 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. ST PRODUCTS ARE NOT DESIGNED OR AUTHORIZED FOR USE IN: (A) SAFETY CRITICAL APPLICATIONS SUCH AS LIFE SUPPORTING, ACTIVE IMPLANTED DEVICES OR SYSTEMS WITH PRODUCT FUNCTIONAL SAFETY REQUIREMENTS; (B) AERONAUTIC APPLICATIONS; (C) AUTOMOTIVE APPLICATIONS OR ENVIRONMENTS, AND/OR (D) AEROSPACE APPLICATIONS OR ENVIRONMENTS. WHERE ST PRODUCTS ARE NOT DESIGNED FOR SUCH USE, THE PURCHASER SHALL USE PRODUCTS AT PURCHASER'S SOLE RISK, EVEN IF ST HAS BEEN INFORMED IN WRITING OF SUCH USAGE, UNLESS A PRODUCT IS EXPRESSLY DESIGNATED BY ST AS BEING INTENDED FOR "AUTOMOTIVE, AUTOMOTIVE SAFETY OR MEDICAL" INDUSTRY DOMAINS ACCORDING TO ST PRODUCT DESIGN SPECIFICATIONS. PRODUCTS FORMALLY ESCC, QML OR JAN QUALIFIED ARE DEEMED SUITABLE FOR USE IN AEROSPACE BY THE CORRESPONDING GOVERNMENTAL AGENCY. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2019 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com