1 files changed, 32 insertions, 12 deletions

diff --git a/src/util/crypto_hash.c b/src/util/crypto_hash.c
index cce9cf82a..fe1f58df7 100644
--- a/src/util/crypto_hash.c
+++ b/src/util/crypto_hash.c
@@ -2,20 +2,18 @@
      This file is part of GNUnet.
      Copyright (C) 2001-2013 GNUnet e.V.
 
-     GNUnet is free software; you can redistribute it and/or modify
-     it under the terms of the GNU General Public License as published
-     by the Free Software Foundation; either version 3, or (at your
-     option) any later version.
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
 
      GNUnet is distributed in the hope that it will be useful, but
      WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-     General Public License for more details.
-
-     You should have received a copy of the GNU General Public License
-     along with GNUnet; see the file COPYING.  If not, write to the
-     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-     Boston, MA 02110-1301, USA.
+     Affero General Public License for more details.
+    
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 /**
@@ -367,14 +365,17 @@ GNUNET_CRYPTO_hmac_derive_key_v (struct GNUNET_CRYPTO_AuthKey *key,
 
 /**
  * Calculate HMAC of a message (RFC 2104)
+ * TODO: Shouldn' this be the standard hmac function and
+ * the above be renamed?
  *
  * @param key secret key
+ * @param key_len secret key length
  * @param plaintext input plaintext
  * @param plaintext_len length of @a plaintext
  * @param hmac where to store the hmac
  */
 void
-GNUNET_CRYPTO_hmac (const struct GNUNET_CRYPTO_AuthKey *key,
+GNUNET_CRYPTO_hmac_raw (const void *key, size_t key_len,
                     const void *plaintext, size_t plaintext_len,
                     struct GNUNET_HashCode *hmac)
 {
@@ -392,7 +393,7 @@ GNUNET_CRYPTO_hmac (const struct GNUNET_CRYPTO_AuthKey *key,
   {
     gcry_md_reset (md);
   }
-  gcry_md_setkey (md, key->key, sizeof (key->key));
+  gcry_md_setkey (md, key, key_len);
   gcry_md_write (md, plaintext, plaintext_len);
   mc = gcry_md_read (md, GCRY_MD_SHA512);
   GNUNET_assert (NULL != mc);
@@ -401,6 +402,25 @@ GNUNET_CRYPTO_hmac (const struct GNUNET_CRYPTO_AuthKey *key,
 
 
 /**
+ * Calculate HMAC of a message (RFC 2104)
+ *
+ * @param key secret key
+ * @param plaintext input plaintext
+ * @param plaintext_len length of @a plaintext
+ * @param hmac where to store the hmac
+ */
+void
+GNUNET_CRYPTO_hmac (const struct GNUNET_CRYPTO_AuthKey *key,
+                    const void *plaintext, size_t plaintext_len,
+                    struct GNUNET_HashCode *hmac)
+{
+  GNUNET_CRYPTO_hmac_raw ((void*) key->key, sizeof (key->key),
+                          plaintext, plaintext_len,
+                          hmac);
+}
+
+
+/**
  * Context for cummulative hashing.
  */
 struct GNUNET_HashContext