PolarSSL v1.1.4
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AES block cipher. More...
#include <string.h>
Go to the source code of this file.
Data Structures | |
struct | aes_context |
AES context structure. More... | |
Defines | |
#define | AES_ENCRYPT 1 |
#define | AES_DECRYPT 0 |
#define | POLARSSL_ERR_AES_INVALID_KEY_LENGTH -0x0020 |
Invalid key length. | |
#define | POLARSSL_ERR_AES_INVALID_INPUT_LENGTH -0x0022 |
Invalid data input length. | |
Functions | |
int | aes_setkey_enc (aes_context *ctx, const unsigned char *key, unsigned int keysize) |
AES key schedule (encryption) | |
int | aes_setkey_dec (aes_context *ctx, const unsigned char *key, unsigned int keysize) |
AES key schedule (decryption) | |
int | aes_crypt_ecb (aes_context *ctx, int mode, const unsigned char input[16], unsigned char output[16]) |
AES-ECB block encryption/decryption. | |
int | aes_crypt_cbc (aes_context *ctx, int mode, size_t length, unsigned char iv[16], const unsigned char *input, unsigned char *output) |
AES-CBC buffer encryption/decryption Length should be a multiple of the block size (16 bytes) | |
int | aes_crypt_cfb128 (aes_context *ctx, int mode, size_t length, size_t *iv_off, unsigned char iv[16], const unsigned char *input, unsigned char *output) |
AES-CFB128 buffer encryption/decryption. | |
int | aes_crypt_ctr (aes_context *ctx, size_t length, size_t *nc_off, unsigned char nonce_counter[16], unsigned char stream_block[16], const unsigned char *input, unsigned char *output) |
int | aes_self_test (int verbose) |
Checkup routine. |
AES block cipher.
Copyright (C) 2006-2010, Brainspark B.V.
This file is part of PolarSSL (http://www.polarssl.org) Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
All rights reserved.
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; either version 2 of the License, or (at your option) any later version.
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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
Definition in file aes.h.
#define AES_DECRYPT 0 |
#define AES_ENCRYPT 1 |
#define POLARSSL_ERR_AES_INVALID_INPUT_LENGTH -0x0022 |
#define POLARSSL_ERR_AES_INVALID_KEY_LENGTH -0x0020 |
int aes_crypt_cbc | ( | aes_context * | ctx, |
int | mode, | ||
size_t | length, | ||
unsigned char | iv[16], | ||
const unsigned char * | input, | ||
unsigned char * | output | ||
) |
AES-CBC buffer encryption/decryption Length should be a multiple of the block size (16 bytes)
ctx | AES context |
mode | AES_ENCRYPT or AES_DECRYPT |
length | length of the input data |
iv | initialization vector (updated after use) |
input | buffer holding the input data |
output | buffer holding the output data |
Referenced by FCT_BGN().
int aes_crypt_cfb128 | ( | aes_context * | ctx, |
int | mode, | ||
size_t | length, | ||
size_t * | iv_off, | ||
unsigned char | iv[16], | ||
const unsigned char * | input, | ||
unsigned char * | output | ||
) |
AES-CFB128 buffer encryption/decryption.
Note: Due to the nature of CFB you should use the same key schedule for both encryption and decryption. So a context initialized with aes_setkey_enc() for both AES_ENCRYPT and AES_DECRYPT.
both
ctx | AES context |
mode | AES_ENCRYPT or AES_DECRYPT |
length | length of the input data |
iv_off | offset in IV (updated after use) |
iv | initialization vector (updated after use) |
input | buffer holding the input data |
output | buffer holding the output data |
Referenced by FCT_BGN().
int aes_crypt_ctr | ( | aes_context * | ctx, |
size_t | length, | ||
size_t * | nc_off, | ||
unsigned char | nonce_counter[16], | ||
unsigned char | stream_block[16], | ||
const unsigned char * | input, | ||
unsigned char * | output | ||
) |
int aes_crypt_ecb | ( | aes_context * | ctx, |
int | mode, | ||
const unsigned char | input[16], | ||
unsigned char | output[16] | ||
) |
AES-ECB block encryption/decryption.
ctx | AES context |
mode | AES_ENCRYPT or AES_DECRYPT |
input | 16-byte input block |
output | 16-byte output block |
Referenced by FCT_BGN().
int aes_self_test | ( | int | verbose | ) |
int aes_setkey_dec | ( | aes_context * | ctx, |
const unsigned char * | key, | ||
unsigned int | keysize | ||
) |
AES key schedule (decryption)
ctx | AES context to be initialized |
key | decryption key |
keysize | must be 128, 192 or 256 |
Referenced by FCT_BGN().
int aes_setkey_enc | ( | aes_context * | ctx, |
const unsigned char * | key, | ||
unsigned int | keysize | ||
) |
AES key schedule (encryption)
ctx | AES context to be initialized |
key | encryption key |
keysize | must be 128, 192 or 256 |
Referenced by FCT_BGN().