AOCL-Cryptography

The AOCL-Cryptography library consists of core cryptographic functions optimized for AMD “Zen” micro-architecture. It supports multiple cryptographic routines and enables provider path for the following routines:

• Advanced Encryption Standard (AES) block ciphers— CTR, CBC, CFB, GCM, OFB, XTS, SIV
• ChaCha20 stream cipher, Chacha20-Poly1305 Cipher algorithms
• Cipher, Hash, and Poly1305 based Message Authentication Code (MAC) algorithms
• Elliptic-curve Diffie-Hellman (ECDH) Key Generation algorithms
• Rivest, Shamir, and Adleman (RSA) encryption/decryption and sign/verify algorithms

Highlights of AOCL-Cryptography 5.3

• Added SHA-256 and HMAC-SHA-256 multi-buffer support
• Added variable-length multi-buffer support for CBC and CFB
• Added AVX2-optimized ChaCha20 support for Zen 2 and Zen 3
• Improved AES-XTS tweak computation and AES-GCM performance on Zen 4 and later
• Improved Poly1305 performance on Zen 4 and later
• Support for OpenSSL 3.5 with enhanced OpenSSL provider support including AES-CBC enabled by default and RSA verify/recover fallback
• Improved reliability with fixes for CFB short-input handling, RSA init/PSS dispatch, and Windows RNG updates

Documentation

• AOCL-Cryptography API Guide
• Prior versions: AOCL-Cryptography Archive
• Source code: GitHub

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