As algif_skcipher does not support nonincremental algorithms, check
for them and return ENOSYS. If necessary support for them could
be added in the same way as AEAD.
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---
crypto/algif_skcipher.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index e22516c3d285..ac59fd9ea4e4 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -131,6 +131,10 @@ static int _skcipher_recvmsg(struct socket *sock, struct msghdr *msg,
* full block size buffers.
*/
if (ctx->more || len < ctx->used) {
+ err = -ENOSYS;
+ if (!crypto_skcipher_isincremental(tfm))
+ goto free;
+
if (ctx->more && ctx->used - ts < len)
len = ctx->used - ts;
len -= len % bs;
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
