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: Nicolas Ferre <[email protected]>
Cc: Alexandre Belloni <[email protected]>
Cc: Ludovic Desroches <[email protected]>
Signed-off-by: Andrei Botila <[email protected]>
---
 drivers/crypto/atmel-aes.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index a6e14491e080..af789ac73478 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -1107,6 +1107,10 @@ static int atmel_aes_crypt(struct skcipher_request *req, 
unsigned long mode)
                ctx->block_size = CFB64_BLOCK_SIZE;
                break;
 
+       case AES_FLAGS_XTS:
+               if (!req->cryptlen)
+                       return 0;
+
        default:
                ctx->block_size = AES_BLOCK_SIZE;
                break;
-- 
2.17.1

Reply via email to