crypto: algif_skcipher - Add key check exception for cipher_null

This patch adds an exception to the key check so that cipher_null
users may continue to use algif_skcipher without setting a key.

Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index 110bab499e43525584b983771d5a948a09adc519..4a5bdb69fd493e5a0816fc19025f3b7faa276fb5 100644 (file)
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -978,7 +978,7 @@ static int skcipher_accept_parent(void *private, struct sock *sk)
 {
        struct skcipher_tfm *tfm = private;
 
-       if (!tfm->has_key)
+       if (!tfm->has_key && crypto_skcipher_has_setkey(tfm->skcipher))
                return -ENOKEY;
 
        return skcipher_accept_parent_common(private, sk);