crypto: hmac - require that the underlying hash algorithm is unkeyed

[pandora-kernel.git] / include / crypto / internal / hash.h

diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index 7bdb812..b813ae9 100644 (file)
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -70,6 +70,14 @@ int ahash_register_instance(struct crypto_template *tmpl,
                            struct ahash_instance *inst);
 void ahash_free_instance(struct crypto_instance *inst);
 
+int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
+                   unsigned int keylen);
+
+static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
+{
+       return alg->setkey != shash_no_setkey;
+}
+
 int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
                            struct hash_alg_common *alg,
                            struct crypto_instance *inst);