arm64/crypto: GHASH secure hash using ARMv8 Crypto Extensions
This is a port to ARMv8 (Crypto Extensions) of the Intel implementation of the GHASH Secure Hash (used in the Galois/Counter chaining mode). It relies on the optional PMULL/PMULL2 instruction (polynomial multiply long, what Intel call carry-less multiply). Signed-off-by:Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by:
Herbert Xu <herbert@gondor.apana.org.au>
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