mbedtls/ChangeLog.d/mbedtls_sha512_a64_crypto_acceleration.txt
Tom Cosgrove 87fbfb5d82 SECLIB-667: Accelerate SHA-512 with A64 crypto extensions
Provide an additional pair of #defines, MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT
and MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY. At most one of them may be
specified. If used, it is necessary to compile with -march=armv8.2-a+sha3.

The MBEDTLS_SHA512_PROCESS_ALT and MBEDTLS_SHA512_ALT mechanisms
continue to work, and are mutually exclusive with SHA512_USE_A64_CRYPTO.

There should be minimal code size impact if no A64_CRYPTO option is set.

The SHA-512 implementation was originally written by Simon Tatham for PuTTY,
under the MIT licence; dual-licensed as Apache 2 with his kind permission.

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
2022-03-23 21:40:53 +00:00

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Features
* A64 crypto extension support for SHA-512