DES block cipher. More...
#include "config.h"
#include <string.h>
#include <inttypes.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) |
Checkup routine. |
DES block cipher.
Copyright (C) 2006-2013, 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 |
Definition at line 42 of file des.h.
Referenced by des_self_test(), pem_des3_decrypt(), pem_des_decrypt(), test_suite_des3_decrypt_cbc(), and test_suite_des_decrypt_cbc().
#define DES_ENCRYPT 1 |
Definition at line 41 of file des.h.
Referenced by des3_crypt_cbc(), des_crypt_cbc(), test_suite_des3_encrypt_cbc(), and test_suite_des_encrypt_cbc().
#define DES_KEY_SIZE 8 |
Definition at line 46 of file des.h.
Referenced by test_suite_des_key_parity_run().
#define POLARSSL_ERR_DES_INVALID_INPUT_LENGTH -0x0032 |
The data input has an invalid length.
Definition at line 44 of file des.h.
Referenced by des3_crypt_cbc(), des_crypt_cbc(), polarssl_strerror(), and verify_int().
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 |
Definition at line 710 of file des.c.
References des3_crypt_ecb(), DES_ENCRYPT, and POLARSSL_ERR_DES_INVALID_INPUT_LENGTH.
Referenced by des3_crypt_cbc_wrap(), des_self_test(), pem_des3_decrypt(), test_suite_des3_decrypt_cbc(), and test_suite_des3_encrypt_cbc().
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 |
Definition at line 666 of file des.c.
References DES_FP, DES_IP, DES_ROUND, GET_UINT32_BE, PUT_UINT32_BE, and des3_context::sk.
Referenced by des3_crypt_cbc(), des3_crypt_ecb_wrap(), des_self_test(), test_suite_des3_decrypt_ecb(), and test_suite_des3_encrypt_ecb().
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 |
Definition at line 519 of file des.c.
References des3_set2key(), key, and des3_context::sk.
Referenced by des3_set2key_dec_wrap(), des_self_test(), test_suite_des3_decrypt_cbc(), and test_suite_des3_decrypt_ecb().
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 |
Definition at line 506 of file des.c.
References des3_set2key(), key, and des3_context::sk.
Referenced by des3_set2key_enc_wrap(), des_self_test(), test_suite_des3_encrypt_cbc(), and test_suite_des3_encrypt_ecb().
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 |
Definition at line 568 of file des.c.
References des3_set3key(), key, and des3_context::sk.
Referenced by des3_set3key_dec_wrap(), des_self_test(), pem_des3_decrypt(), test_suite_des3_decrypt_cbc(), and test_suite_des3_decrypt_ecb().
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 |
Definition at line 555 of file des.c.
References des3_set3key(), key, and des3_context::sk.
Referenced by des3_set3key_enc_wrap(), des_self_test(), test_suite_des3_encrypt_cbc(), and test_suite_des3_encrypt_ecb().
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 |
Definition at line 613 of file des.c.
References des_crypt_ecb(), DES_ENCRYPT, and POLARSSL_ERR_DES_INVALID_INPUT_LENGTH.
Referenced by des_crypt_cbc_wrap(), des_self_test(), pem_des_decrypt(), test_suite_des_decrypt_cbc(), and test_suite_des_encrypt_cbc().
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 |
Definition at line 581 of file des.c.
References DES_FP, DES_IP, DES_ROUND, GET_UINT32_BE, PUT_UINT32_BE, and des_context::sk.
Referenced by des_crypt_cbc(), des_crypt_ecb_wrap(), des_self_test(), test_suite_des_decrypt_ecb(), and test_suite_des_encrypt_ecb().
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 |
Definition at line 315 of file des.c.
References key, and odd_parity_table.
Referenced by test_suite_des_key_parity_run().
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 |
Definition at line 370 of file des.c.
References key, WEAK_KEY_COUNT, and weak_key_table.
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 |
Definition at line 304 of file des.c.
References key, and odd_parity_table.
Referenced by test_suite_des_key_parity_run().
int des_self_test | ( | int | verbose | ) |
Checkup routine.
Definition at line 819 of file des.c.
References des3_crypt_cbc(), des3_crypt_ecb(), des3_set2key_dec(), des3_set2key_enc(), des3_set3key_dec(), des3_set3key_enc(), des3_test_buf, des3_test_cbc_dec, des3_test_cbc_enc, des3_test_ecb_dec, des3_test_ecb_enc, des3_test_iv, des3_test_keys, des_crypt_cbc(), des_crypt_ecb(), DES_DECRYPT, des_setkey_dec(), des_setkey_enc(), iv, and key.
Referenced by test_suite_des_selftest().
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 |
Definition at line 463 of file des.c.
References des_setkey(), key, des_context::sk, and SWAP.
Referenced by des_self_test(), des_setkey_dec_wrap(), pem_des_decrypt(), test_suite_des_decrypt_cbc(), and test_suite_des_decrypt_ecb().
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 |
Definition at line 453 of file des.c.
References des_setkey(), key, and des_context::sk.
Referenced by des_self_test(), des_setkey_enc_wrap(), test_suite_des_encrypt_cbc(), and test_suite_des_encrypt_ecb().