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X-CUBE-CRYPTOLIB：STM32 cryptographic firmware library software expansion for STM32Cube (UM1924)

The STM32 cryptographic library package (X-CUBE-CRYPTOLIB) includes all the major security algorithms for encryption, hashing, message authentication, and digital signing, enabling developers to satisfy application requirements for any combination of data integrity, confidentiality, identification/authentication, and nonrepudiation.

The library includes firmware as well as hardware-acceleration functions for STM32 families. For more details refer to STM32 crypto library User manual (UM1924) at the www.st.com website.This firmware is classified ECCN 5D002.

Most of the well-used algorithms are certified according to the US Cryptographic Algorithm Validation Program (CAVP), helping customers to prove quickly and cost-effectively the security of their new products.The certified algorithms are: AES (3971), RSA (2036), ECDSA (874), SHS (3275), DRBG (1165) and HMAC (2589). Full details are available online at the NIST CSRC Algorithm Validation Lists website http://csrc.nist.gov, selecting the Cryptographic Algorithm Validation Program web page.

In this package there are examples for each algorithm and template projects for popular development tools including Keil^®MDK-ARM^™, IAR^®EWARM (IAR Embedded Workbench^®) and GCC -based IDEs such as Ac6 SW4STM32 and Atollic^®TrueSTUDIO^®.

Key Features

• Supported NIST CAVP certified crypto algorithms:
• AES-128, AES-192, AES-256 bits:
  • ECB (Electronic Codebook Mode)
  • CBC (Cipher-Block Chaining) with support for cipher text stealing
  • CTR (Counter Mode)
  • CFB (Cipher Feedback)
  • OFB (Output Feedback)
  • CCM (Counter with CBC-MAC)
  • GCM (Galois Counter Mode)
  • CMAC
  • KEY WRAP
  • XTS (XEX-based tweaked-codebook mode with cipher text stealing
• HASH functions with HMAC support:
  • SHA-1
  • SHA-224
  • SHA-256
  • SHA-384
  • SHA-512
• Random engine based on DRBG-AES-128
• RSA with PKCS#1v1.5:
  • Encryption/decryption
  • Signature
• ECC (Elliptic Curve Cryptography)
  • Key generation
  • Scalar multiplication (the base for ECDH)
  • ECDSA
• Supported, but not certified, crypto algorithms included in the library:
• ARC4
• DES, TripleDES:
  • ECB (Electronic Codebook Mode)
  • CBC (Cipher-Block Chaining)
• HASH:
  • MD5
  • HKDF-SHA-512
• ChaCha20
• Poly1305
• CHaCHA20-POLY1305
• ED25519
• Curve25519

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