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src/libmysql_std/include/my_aes.h
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00001 /* Copyright (C) 2002 MySQL AB
00002 
00003  This program is free software; you can redistribute it and/or modify
00004  it under the terms of the GNU General Public License as published by
00005  the Free Software Foundation; version 2 of the License.
00006 
00007  This program is distributed in the hope that it will be useful,
00008  but WITHOUT ANY WARRANTY; without even the implied warranty of
00009  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00010  GNU General Public License for more details.
00011 
00012  You should have received a copy of the GNU General Public License
00013  along with this program; if not, write to the Free Software
00014  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
00015 
00016 
00017 /* Header file for my_aes.c */
00018 /* Wrapper to give simple interface for MySQL to AES standard encryption */
00019 
00020 #include "rijndael.h"
00021 
00022 C_MODE_START
00023 
00024 #define AES_KEY_LENGTH 128              /* Must be 128 192 or 256 */
00025 
00026 /*
00027   my_aes_encrypt        - Crypt buffer with AES encryption algorithm.
00028   source                - Pointer to data for encryption
00029   source_length         - size of encryption data
00030   dest                  - buffer to place encrypted data (must be large enough)
00031   key                   - Key to be used for encryption
00032   kel_length            - Length of the key. Will handle keys of any length
00033 
00034   returns  - size of encrypted data, or negative in case of error.
00035 */
00036 
00037 int my_aes_encrypt(const char *source, int source_length, char *dest,
00038                    const char *key, int key_length);
00039 
00040 /*
00041   my_aes_decrypt        - DeCrypt buffer with AES encryption algorithm.
00042   source                - Pointer to data for decryption
00043   source_length         - size of encrypted data
00044   dest                  - buffer to place decrypted data (must be large enough)
00045   key                   - Key to be used for decryption
00046   kel_length            - Length of the key. Will handle keys of any length
00047 
00048   returns  - size of original data, or negative in case of error.
00049 */
00050 
00051 
00052 int my_aes_decrypt(const char *source, int source_length, char *dest,
00053                    const char *key, int key_length);
00054 
00055 /*
00056   my_aes_get_size - get size of buffer which will be large enough for encrypted
00057                     data
00058   source_length   -  length of data to be encrypted
00059 
00060   returns  - size of buffer required to store encrypted data
00061 */
00062 
00063 int my_aes_get_size(int source_length);
00064 
00065 C_MODE_END
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