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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2014-06-16 11:02:15 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2014-06-18 12:40:53 +0100
commit6aa8b209f5ef3610d470c519ddd6e6b47e9f6248 (patch)
tree8a9d694297be2e760b078adb24c0fda6dbdb36d1
parent8907272849f923a807d33e71e73dfb343bfb34ab (diff)
downloadlinux-stericsson-6aa8b209f5ef3610d470c519ddd6e6b47e9f6248.tar.gz
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: fdd2389457b2 ("arm64/crypto: GHASH secure hash using ARMv8 Crypto Extensions") Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
-rw-r--r--arch/arm64/crypto/ghash-ce-glue.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/crypto/ghash-ce-glue.c b/arch/arm64/crypto/ghash-ce-glue.c
index b92baf3f68c7..ef6aa69c4e0c 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);