X.509: Make algo identifiers text instead of enum

Make the identifier public key and digest algorithm fields text instead of
enum.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/asymmetric_keys/pkcs7_verify.c

@@ -31,17 +31,15 @@ static int pkcs7_digest(struct pkcs7_message *pkcs7,
 	void *digest;
 	int ret;
 
-	kenter(",%u,%u", sinfo->index, sinfo->sig.pkey_hash_algo);
+	kenter(",%u,%s", sinfo->index, sinfo->sig.hash_algo);
 
-	if (sinfo->sig.pkey_hash_algo >= PKEY_HASH__LAST ||
-	    !hash_algo_name[sinfo->sig.pkey_hash_algo])
+	if (!sinfo->sig.hash_algo)
 		return -ENOPKG;
 
 	/* Allocate the hashing algorithm we're going to need and find out how
 	 * big the hash operational data will be.
 	 */
-	tfm = crypto_alloc_shash(hash_algo_name[sinfo->sig.pkey_hash_algo],
-				 0, 0);
+	tfm = crypto_alloc_shash(sinfo->sig.hash_algo, 0, 0);
 	if (IS_ERR(tfm))
 		return (PTR_ERR(tfm) == -ENOENT) ? -ENOPKG : PTR_ERR(tfm);