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author | Elena Petrova | 2019-05-28 16:35:06 +0200 |
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committer | Herbert Xu | 2019-06-06 08:38:57 +0200 |
commit | 6bd934de1e393466b319d29c4427598fda096c57 (patch) | |
tree | a3d7344c872a7bc71ea1ef9dd4e7a4b1e5682c8a /mm/shuffle.c | |
parent | crypto: arm64/sha1-ce - correct digest for empty data in finup (diff) | |
download | kernel-qcow2-linux-6bd934de1e393466b319d29c4427598fda096c57.tar.gz kernel-qcow2-linux-6bd934de1e393466b319d29c4427598fda096c57.tar.xz kernel-qcow2-linux-6bd934de1e393466b319d29c4427598fda096c57.zip |
crypto: arm64/sha2-ce - correct digest for empty data in finup
The sha256-ce finup implementation for ARM64 produces wrong digest
for empty input (len=0). Expected: the actual digest, result: initial
value of SHA internal state. The error is in sha256_ce_finup:
for empty data `finalize` will be 1, so the code is relying on
sha2_ce_transform to make the final round. However, in
sha256_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: 03802f6a80b3a ("crypto: arm64/sha2-ce - move SHA-224/256 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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'mm/shuffle.c')
0 files changed, 0 insertions, 0 deletions