crypto: hash - introduce crypto_hash_alg_has_setkey()

[pandora-kernel.git] / crypto / ahash.c

diff --git a/crypto/ahash.c b/crypto/ahash.c
index a6f94c4..6f89231 100644 (file)
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -599,5 +599,16 @@ struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask)
 }
 EXPORT_SYMBOL_GPL(ahash_attr_alg);
 
+bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg)
+{
+       struct crypto_alg *alg = &halg->base;
+
+       if (alg->cra_type != &crypto_ahash_type)
+               return crypto_shash_alg_has_setkey(__crypto_shash_alg(alg));
+
+       return __crypto_ahash_alg(alg)->setkey != NULL;
+}
+EXPORT_SYMBOL_GPL(crypto_hash_alg_has_setkey);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Asynchronous cryptographic hash type");