From: Andrei Botila <[email protected]>
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 <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Signed-off-by: Andrei Botila <[email protected]>
---
arch/s390/crypto/paes_s390.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/s390/crypto/paes_s390.c b/arch/s390/crypto/paes_s390.c
index f3caeb17c85b..7f0861c6f019 100644
--- a/arch/s390/crypto/paes_s390.c
+++ b/arch/s390/crypto/paes_s390.c
@@ -494,6 +494,9 @@ static int xts_paes_crypt(struct skcipher_request *req, unsigned long modifier)
u8 init[16];
} xts_param;
+ if (!req->cryptlen)
+ return 0;
+
ret = skcipher_walk_virt(&walk, req, false);
if (ret)
return ret;
--
2.17.1