release/src/router/nettle/aes-encrypt.c

   1 /* aes-encrypt.c
   2  *
   3  * Encryption function for the aes/rijndael block cipher.
   4  */
   5
   6 /* nettle, low-level cryptographics library
   7  *
   8  * Copyright (C) 2002 Niels Möller
   9  *
  10  * The nettle library is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 of the License, or (at your
  13  * option) any later version.
  14  *
  15  * The nettle library is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  18  * License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with the nettle library; see the file COPYING.LIB.  If not, write to
  22  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  23  * MA 02111-1301, USA.
  24  */
  25
  26 #if HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <assert.h>
  31
  32 #include "aes-internal.h"
  33
  34 /* The main point on this function is to help the assembler
  35    implementations of _nettle_aes_encrypt to get the table pointer.
  36    For PIC code, the details can be complex and system dependent. */
  37 void
  38 aes_encrypt(const struct aes_ctx *ctx,
  39             unsigned length, uint8_t *dst,
  40             const uint8_t *src)
  41 {
  42   assert(!(length % AES_BLOCK_SIZE) );
  43   _aes_encrypt(ctx, &_aes_encrypt_table,
  44                length, dst, src);
  45 }