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/* Copyright (c) 2002, 2006 MySQL AB, 2009 Sun Microsystems, Inc.
Copyright (c) 2014, 2015 MariaDB Corporation
Use is subject to license terms.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/* Header file for my_aes.c */
/* Wrapper to give simple interface for MySQL to AES standard encryption */
#ifndef MY_AES_INCLUDED
#define MY_AES_INCLUDED
typedef int Crypt_result;
#define AES_OK 0
#define AES_BAD_DATA -1
#define AES_BAD_IV -2
#define AES_INVALID -3
#define AES_OPENSSL_ERROR -4
#define AES_BAD_KEYSIZE -5
#define AES_KEY_CREATION_FAILED -10
#define CRYPT_KEY_OK 0
#define CRYPT_BUFFER_TO_SMALL -11
#define CRYPT_KEY_UNKNOWN -48
/* The block size for all supported algorithms */
#define MY_AES_BLOCK_SIZE 16
/* The max key length of all supported algorithms */
#define MY_AES_MAX_KEY_LENGTH 32
#include "rijndael.h"
C_MODE_START
/**
Crypt buffer with AES dynamic (defined at startup) encryption algorithm.
SYNOPSIS
my_aes_encrypt_dynamic()
@param source [in] Pointer to data for encryption
@param source_length [in] Size of encryption data
@param dest [out] Buffer to place encrypted data (must be large enough)
@param dest_length [out] Pointer to size of encrypted data
@param key [in] Key to be used for encryption
@param key_length [in] Length of the key. 16, 24 or 32
@param iv [in] Iv to be used for encryption
@param iv_length [in] Length of the iv. should be 16.
@param noPadding [in] if set, algorithm specific padding behaviour is used
Method used defined by calling my_aes_init_dynamic_encrypt() at startup.
@return
!= 0 error
0 no error
*/
typedef int (*my_aes_encrypt_dynamic_type)(const uchar* source, uint32 source_length,
uchar* dest, uint32* dest_length,
const uchar* key, uint8 key_length,
const uchar* iv, uint8 iv_length,
uint noPadding);
extern MYSQL_PLUGIN_IMPORT my_aes_encrypt_dynamic_type my_aes_encrypt_dynamic;
/**
AES decryption AES dynamic (defined at startup) encryption algorithm.
SYNOPSIS
my_aes_decrypt_dynamic()
@param source [in] Pointer to data to decrypt
@param source_length [in] Size of data
@param dest [out] Buffer to place decrypted data (must be large enough)
@param dest_length [out] Pointer to size of decrypted data
@param key [in] Key to be used for decryption
@param key_length [in] Length of the key. 16, 24 or 32
@param iv [in] Iv to be used for encryption
@param iv_length [in] Length of the iv. should be 16.
@param noPadding [in] if set, algorithm specific padding behaviour is used
@return
!= 0 error
0 no error
Method used defined by calling my_aes_init_dynamic_encrypt() at startup.
*/
typedef int (*my_aes_decrypt_dynamic_type)(const uchar *source,
uint32 source_length,
uchar *dest, uint32 *dest_length,
const uchar *key, uint8 key_length,
const uchar *iv, uint8 iv_length,
uint noPadding);
extern MYSQL_PLUGIN_IMPORT my_aes_decrypt_dynamic_type my_aes_decrypt_dynamic;
/**
Initialize dynamic crypt functions
*/
enum enum_my_aes_encryption_algorithm
{
MY_AES_ALGORITHM_NONE, MY_AES_ALGORITHM_ECB, MY_AES_ALGORITHM_CBC,
MY_AES_ALGORITHM_CTR
};
my_aes_decrypt_dynamic_type get_aes_decrypt_func(enum enum_my_aes_encryption_algorithm method);
my_aes_encrypt_dynamic_type get_aes_encrypt_func(enum enum_my_aes_encryption_algorithm method);
my_bool my_aes_init_dynamic_encrypt(enum enum_my_aes_encryption_algorithm method);
extern MYSQL_PLUGIN_IMPORT enum enum_my_aes_encryption_algorithm current_aes_dynamic_method;
int my_aes_get_size(int source_length);
C_MODE_END
#endif /* MY_AES_INCLUDED */
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