/* umac-set-key.c
-
- Copyright (C) 2013 Niels Möller
-
- This file is part of GNU Nettle.
-
- GNU Nettle is free software: you can redistribute it and/or
- modify it under the terms of either:
-
- * the GNU Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at your
- option) any later version.
-
- or
-
- * the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- or both in parallel, as here.
-
- GNU Nettle 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 copies of the GNU General Public License and
- the GNU Lesser General Public License along with this program. If
- not, see http://www.gnu.org/licenses/.
-*/
+ */
+
+/* nettle, low-level cryptographics library
+ *
+ * Copyright (C) 2013 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"
#include "macros.h"
static void
-umac_kdf (struct aes128_ctx *aes, unsigned index, unsigned length, uint8_t *dst)
+umac_kdf (struct aes_ctx *aes, unsigned index, unsigned length, uint8_t *dst)
{
uint8_t block[AES_BLOCK_SIZE];
uint64_t count;
length -= AES_BLOCK_SIZE, dst += AES_BLOCK_SIZE, count++)
{
WRITE_UINT64 (block + 8, count);
- aes128_encrypt (aes, AES_BLOCK_SIZE, dst, block);
+ aes_encrypt (aes, AES_BLOCK_SIZE, dst, block);
}
if (length > 0)
{
WRITE_UINT64 (block + 8, count);
- aes128_encrypt (aes, AES_BLOCK_SIZE, block, block);
+ aes_encrypt (aes, AES_BLOCK_SIZE, block, block);
memcpy (dst, block, length);
}
}
void
_umac_set_key (uint32_t *l1_key, uint32_t *l2_key,
uint64_t *l3_key1, uint32_t *l3_key2,
- struct aes128_ctx *aes, const uint8_t *key, unsigned n)
+ struct aes_ctx *aes, const uint8_t *key, unsigned n)
{
unsigned size;
uint8_t buffer[UMAC_KEY_SIZE];
- aes128_set_encrypt_key (aes, key);
+ aes_set_encrypt_key (aes, UMAC_KEY_SIZE, key);
- size = UMAC_BLOCK_SIZE / 4 + 4*(n-1);
+ size = UMAC_DATA_SIZE / 4 + 4*(n-1);
umac_kdf (aes, 1, size * sizeof(uint32_t), (uint8_t *) l1_key);
BE_SWAP32_N (size, l1_key);
umac_kdf (aes, 4, n * sizeof(uint32_t), (uint8_t *) l3_key2);
umac_kdf (aes, 0, UMAC_KEY_SIZE, buffer);
- aes128_set_encrypt_key (aes, buffer);
+ aes_set_encrypt_key (aes, UMAC_KEY_SIZE, buffer);
}