PolarSSL v1.1.4
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DES block cipher. More...
#include <string.h>
Go to the source code of this file.
Data Structures | |
struct | des_context |
DES context structure. More... | |
struct | des3_context |
Triple-DES context structure. More... | |
Defines | |
#define | DES_ENCRYPT 1 |
#define | DES_DECRYPT 0 |
#define | POLARSSL_ERR_DES_INVALID_INPUT_LENGTH -0x0032 |
The data input has an invalid length. | |
#define | DES_KEY_SIZE 8 |
Functions | |
void | des_key_set_parity (unsigned char key[DES_KEY_SIZE]) |
Set key parity on the given key to odd. | |
int | des_key_check_key_parity (const unsigned char key[DES_KEY_SIZE]) |
Check that key parity on the given key is odd. | |
int | des_key_check_weak (const unsigned char key[DES_KEY_SIZE]) |
Check that key is not a weak or semi-weak DES key. | |
int | des_setkey_enc (des_context *ctx, const unsigned char key[DES_KEY_SIZE]) |
DES key schedule (56-bit, encryption) | |
int | des_setkey_dec (des_context *ctx, const unsigned char key[DES_KEY_SIZE]) |
DES key schedule (56-bit, decryption) | |
int | des3_set2key_enc (des3_context *ctx, const unsigned char key[DES_KEY_SIZE *2]) |
Triple-DES key schedule (112-bit, encryption) | |
int | des3_set2key_dec (des3_context *ctx, const unsigned char key[DES_KEY_SIZE *2]) |
Triple-DES key schedule (112-bit, decryption) | |
int | des3_set3key_enc (des3_context *ctx, const unsigned char key[DES_KEY_SIZE *3]) |
Triple-DES key schedule (168-bit, encryption) | |
int | des3_set3key_dec (des3_context *ctx, const unsigned char key[DES_KEY_SIZE *3]) |
Triple-DES key schedule (168-bit, decryption) | |
int | des_crypt_ecb (des_context *ctx, const unsigned char input[8], unsigned char output[8]) |
DES-ECB block encryption/decryption. | |
int | des_crypt_cbc (des_context *ctx, int mode, size_t length, unsigned char iv[8], const unsigned char *input, unsigned char *output) |
DES-CBC buffer encryption/decryption. | |
int | des3_crypt_ecb (des3_context *ctx, const unsigned char input[8], unsigned char output[8]) |
3DES-ECB block encryption/decryption | |
int | des3_crypt_cbc (des3_context *ctx, int mode, size_t length, unsigned char iv[8], const unsigned char *input, unsigned char *output) |
3DES-CBC buffer encryption/decryption | |
int | des_self_test (int verbose) |
DES 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 des.h.
#define DES_DECRYPT 0 |
#define DES_ENCRYPT 1 |
#define DES_KEY_SIZE 8 |
#define POLARSSL_ERR_DES_INVALID_INPUT_LENGTH -0x0032 |
int des3_crypt_cbc | ( | des3_context * | ctx, |
int | mode, | ||
size_t | length, | ||
unsigned char | iv[8], | ||
const unsigned char * | input, | ||
unsigned char * | output | ||
) |
3DES-CBC buffer encryption/decryption
ctx | 3DES context |
mode | DES_ENCRYPT or DES_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 des3_crypt_ecb | ( | des3_context * | ctx, |
const unsigned char | input[8], | ||
unsigned char | output[8] | ||
) |
3DES-ECB block encryption/decryption
ctx | 3DES context |
input | 64-bit input block |
output | 64-bit output block |
Referenced by FCT_BGN().
int des3_set2key_dec | ( | des3_context * | ctx, |
const unsigned char | key[DES_KEY_SIZE *2] | ||
) |
Triple-DES key schedule (112-bit, decryption)
ctx | 3DES context to be initialized |
key | 16-byte secret key |
Referenced by FCT_BGN().
int des3_set2key_enc | ( | des3_context * | ctx, |
const unsigned char | key[DES_KEY_SIZE *2] | ||
) |
Triple-DES key schedule (112-bit, encryption)
ctx | 3DES context to be initialized |
key | 16-byte secret key |
Referenced by FCT_BGN().
int des3_set3key_dec | ( | des3_context * | ctx, |
const unsigned char | key[DES_KEY_SIZE *3] | ||
) |
Triple-DES key schedule (168-bit, decryption)
ctx | 3DES context to be initialized |
key | 24-byte secret key |
Referenced by FCT_BGN().
int des3_set3key_enc | ( | des3_context * | ctx, |
const unsigned char | key[DES_KEY_SIZE *3] | ||
) |
Triple-DES key schedule (168-bit, encryption)
ctx | 3DES context to be initialized |
key | 24-byte secret key |
Referenced by FCT_BGN().
int des_crypt_cbc | ( | des_context * | ctx, |
int | mode, | ||
size_t | length, | ||
unsigned char | iv[8], | ||
const unsigned char * | input, | ||
unsigned char * | output | ||
) |
DES-CBC buffer encryption/decryption.
ctx | DES context |
mode | DES_ENCRYPT or DES_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 des_crypt_ecb | ( | des_context * | ctx, |
const unsigned char | input[8], | ||
unsigned char | output[8] | ||
) |
DES-ECB block encryption/decryption.
ctx | DES context |
input | 64-bit input block |
output | 64-bit output block |
Referenced by FCT_BGN().
int des_key_check_key_parity | ( | const unsigned char | key[DES_KEY_SIZE] | ) |
Check that key parity on the given key is odd.
DES keys are 56 bits long, but each byte is padded with a parity bit to allow verification.
key | 8-byte secret key |
Referenced by FCT_BGN().
int des_key_check_weak | ( | const unsigned char | key[DES_KEY_SIZE] | ) |
Check that key is not a weak or semi-weak DES key.
key | 8-byte secret key |
void des_key_set_parity | ( | unsigned char | key[DES_KEY_SIZE] | ) |
Set key parity on the given key to odd.
DES keys are 56 bits long, but each byte is padded with a parity bit to allow verification.
key | 8-byte secret key |
Referenced by FCT_BGN().
int des_self_test | ( | int | verbose | ) |
Referenced by FCT_BGN().
int des_setkey_dec | ( | des_context * | ctx, |
const unsigned char | key[DES_KEY_SIZE] | ||
) |
DES key schedule (56-bit, decryption)
ctx | DES context to be initialized |
key | 8-byte secret key |
Referenced by FCT_BGN().
int des_setkey_enc | ( | des_context * | ctx, |
const unsigned char | key[DES_KEY_SIZE] | ||
) |
DES key schedule (56-bit, encryption)
ctx | DES context to be initialized |
key | 8-byte secret key |
Referenced by FCT_BGN().