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crypto: sahara - fix ahash selftest failure

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[ Upstream commit afffcf3db98b9495114b79d5381f8cc3f69476fb ]

update() calls should not modify the result buffer, so add an additional
check for "rctx->last" to make sure that only the final hash value is
copied into the buffer.

Fixes the following selftest failure:
alg: ahash: sahara-sha256 update() used result buffer on test vector 3,
cfg="init+update+final aligned buffer"

Fixes: 5a2bb93f5992 ("crypto: sahara - add support for SHA1/256")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ovidiu Panait 2023-12-01 19:06:21 +02:00 • committed by Ksawlii
parent 05a8adb2f9
commit 9682b9af8b
1 changed files with 1 additions and 1 deletions
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2
drivers/crypto/sahara.c
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@ -1047,7 +1047,7 @@ static int sahara_sha_process(struct ahash_request *req)
memcpy(rctx->context, dev->context_base, rctx->context_size);
if (req->result)
if (req->result && rctx->last)
memcpy(req->result, rctx->context, rctx->digest_size);
return 0;