Generalized nettle_aead abstraction, and moved to nettle-meta.h.

1 files changed, 51 insertions, 0 deletions

diff --git a/gcm-aes128-meta.c b/gcm-aes128-meta.c
new file mode 100644
index 00000000..d6d75764
--- /dev/null
+++ b/gcm-aes128-meta.c
@@ -0,0 +1,51 @@
+/* gcm-aes128-meta.c */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 2014 Niels Möller
+ *  
+ * The nettle library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
+ * 
+ * The nettle library 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 Lesser General Public
+ * License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the nettle library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02111-1301, USA.
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <assert.h>
+
+#include "nettle-meta.h"
+
+#include "gcm.h"
+
+static nettle_set_key_func gcm_aes128_set_nonce_wrapper;
+static void
+gcm_aes128_set_nonce_wrapper (void *ctx, const uint8_t *nonce)
+{
+  gcm_aes128_set_iv (ctx, GCM_IV_SIZE, nonce);
+}
+
+const struct nettle_aead nettle_gcm_aes128 =
+  { "gcm_aes128", sizeof(struct gcm_aes128_ctx),
+    GCM_BLOCK_SIZE, AES128_KEY_SIZE,
+    GCM_IV_SIZE, GCM_DIGEST_SIZE,
+    (nettle_set_key_func *) gcm_aes128_set_key,
+    (nettle_set_key_func *) gcm_aes128_set_key,
+    gcm_aes128_set_nonce_wrapper,
+    (nettle_hash_update_func *) gcm_aes128_update,
+    (nettle_crypt_func *) gcm_aes128_encrypt,
+    (nettle_crypt_func *) gcm_aes128_decrypt,
+    (nettle_hash_digest_func *) gcm_aes128_digest,
+  };