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arm64/crypto: fix data corruption bug in GHASH algorithm 

This fixes a bug in the GHASH algorithm resulting in the calculated hash to be
incorrect if the input is presented in chunks whose size is not a multiple of
16 bytes.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: fdd2389457 ("arm64/crypto: GHASH secure hash using ARMv8 Crypto Extensions")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Ard Biesheuvel 2014-06-16 11:02:15 +01:00 committed by Catalin Marinas
parent 8907272849
commit 6aa8b209f5
1 changed files with 1 additions and 0 deletions
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arch/arm64/crypto/ghash-ce-glue.c
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@ -72,6 +72,7 @@ static int ghash_update(struct shash_desc *desc, const u8 *src,
partial ? ctx->buf : NULL);
kernel_neon_end();
src += blocks * GHASH_BLOCK_SIZE;
partial = 0;
}
if (len)
memcpy(ctx->buf + partial, src, len);