On Tue, May 28, 2019 at 01:41:52PM +0100, Elena Petrova wrote:
The sha1-ce finup implementation for ARM64 produces wrong digest for empty input (len=0). Expected: da39a3ee..., result: 67452301... (initial value of SHA internal state). The error is in sha1_ce_finup: for empty data `finalize` will be 1, so the code is relying on sha1_ce_transform to make the final round. However, in sha1_base_do_update, the block function will not be called when len == 0.
Fix it by setting finalize to 0 if data is empty.
Fixes: 07eb54d306f4 ("crypto: arm64/sha1-ce - move SHA-1 ARMv8 implementation to base layer") Cc: stable@vger.kernel.org Signed-off-by: Elena Petrova lenaptr@google.com Reviewed-by: Ard Biesheuvel ard.biesheuvel@linaro.org
arch/arm64/crypto/sha1-ce-glue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Patch applied. Thanks.