[PATCH 06/22] crypto: s390/aes - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:22:07
Also in:
linux-crypto, linux-s390, linuxppc-dev, lkml
Subsystem:
s390 architecture, s390 crypto modules, prng driver, arch random, the rest · Maintainers:
Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Harald Freudenberger, Holger Dengler, Linus Torvalds
From: Andrei Botila <redacted> Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. Cc: Heiko Carstens <redacted> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <redacted> Signed-off-by: Andrei Botila <redacted> --- arch/s390/crypto/aes_s390.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 73044634d342..bc8855f4b7d1 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c@@ -437,6 +437,9 @@ static int xts_aes_crypt(struct skcipher_request *req, unsigned long modifier) u8 init[16]; } xts_param; + if (!req->cryptlen) + return 0; + if (req->cryptlen < AES_BLOCK_SIZE) return -EINVAL;
--
2.17.1
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