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crypto: ccree - use the full crypt length value 

In case of AEAD decryption verifcation error we were using the
wrong value to zero out the plaintext buffer leaving the end of
the buffer with the false plaintext.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Fixes: ff27e85a85 ("crypto: ccree - add AEAD support")
CC: stable@vger.kernel.org # v4.17+
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef 2019-07-29 13:40:18 +03:00 committed by Herbert Xu
parent b7a2758f20
commit 7a4be6c113
1 changed files with 1 additions and 1 deletions
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2
drivers/crypto/ccree/cc_aead.c
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@ -236,7 +236,7 @@ static void cc_aead_complete(struct device *dev, void *cc_req, int err)
/* In case of payload authentication failure, MUST NOT
* revealed the decrypted message --> zero its memory.
*/
cc_zero_sgl(areq->dst, areq_ctx->cryptlen);
cc_zero_sgl(areq->dst, areq->cryptlen);
err = -EBADMSG;
}
/*ENCRYPT*/