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Author SHA1 Message Date
Ard Biesheuvel b913a6404c arm64/crypto: improve performance of GHASH algorithm 
This patches modifies the GHASH secure hash implementation to switch to a
faster, polynomial multiplication based reduction instead of one that uses
shifts and rotates.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
 2014-06-18 12:40:54 +01:00
Ard Biesheuvel fdd2389457 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>
 2014-05-14 10:04:07 -07:00