From: Ard Biesheuvel Date: Mon, 16 Jun 2014 10:02:15 +0000 (+0100) Subject: arm64/crypto: fix data corruption bug in GHASH algorithm X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6aa8b209f5ef3610d470c519ddd6e6b47e9f6248;p=linux.git 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 Fixes: fdd2389457b2 ("arm64/crypto: GHASH secure hash using ARMv8 Crypto Extensions") Signed-off-by: Catalin Marinas --- diff --git a/arch/arm64/crypto/ghash-ce-glue.c b/arch/arm64/crypto/ghash-ce-glue.c index b92baf3f68c72..ef6aa69c4e0c9 100644 --- a/arch/arm64/crypto/ghash-ce-glue.c +++ b/arch/arm64/crypto/ghash-ce-glue.c @@ -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);