release/src/router/mysql/include/my_aes.h

   1 /* Copyright (c) 2002, 2006 MySQL AB
   2
   3  This program is free software; you can redistribute it and/or modify
   4  it under the terms of the GNU General Public License as published by
   5  the Free Software Foundation; version 2 of the License.
   6
   7  This program is distributed in the hope that it will be useful,
   8  but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  GNU General Public License for more details.
  11
  12  You should have received a copy of the GNU General Public License
  13  along with this program; if not, write to the Free Software
  14  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA */
  15
  16
  17 /* Header file for my_aes.c */
  18 /* Wrapper to give simple interface for MySQL to AES standard encryption */
  19
  20 #include "rijndael.h"
  21
  22 C_MODE_START
  23
  24 #define AES_KEY_LENGTH 128              /* Must be 128 192 or 256 */
  25
  26 /*
  27   my_aes_encrypt        - Crypt buffer with AES encryption algorithm.
  28   source                - Pointer to data for encryption
  29   source_length         - size of encryption data
  30   dest                  - buffer to place encrypted data (must be large enough)
  31   key                   - Key to be used for encryption
  32   kel_length            - Length of the key. Will handle keys of any length
  33
  34   returns  - size of encrypted data, or negative in case of error.
  35 */
  36
  37 int my_aes_encrypt(const char *source, int source_length, char *dest,
  38                    const char *key, int key_length);
  39
  40 /*
  41   my_aes_decrypt        - DeCrypt buffer with AES encryption algorithm.
  42   source                - Pointer to data for decryption
  43   source_length         - size of encrypted data
  44   dest                  - buffer to place decrypted data (must be large enough)
  45   key                   - Key to be used for decryption
  46   kel_length            - Length of the key. Will handle keys of any length
  47
  48   returns  - size of original data, or negative in case of error.
  49 */
  50
  51
  52 int my_aes_decrypt(const char *source, int source_length, char *dest,
  53                    const char *key, int key_length);
  54
  55 /*
  56   my_aes_get_size - get size of buffer which will be large enough for encrypted
  57                     data
  58   source_length   -  length of data to be encrypted
  59
  60   returns  - size of buffer required to store encrypted data
  61 */
  62
  63 int my_aes_get_size(int source_length);
  64
  65 C_MODE_END