XTEA block cipher (32-bit). More...
#include "config.h"
#include <string.h>
#include <inttypes.h>
Go to the source code of this file.
Data Structures | |
struct | xtea_context |
XTEA context structure. More... | |
Defines | |
#define | XTEA_ENCRYPT 1 |
#define | XTEA_DECRYPT 0 |
#define | POLARSSL_ERR_XTEA_INVALID_INPUT_LENGTH -0x0028 |
The data input has an invalid length. | |
Functions | |
void | xtea_setup (xtea_context *ctx, const unsigned char key[16]) |
XTEA key schedule. | |
int | xtea_crypt_ecb (xtea_context *ctx, int mode, const unsigned char input[8], unsigned char output[8]) |
XTEA cipher function. | |
int | xtea_crypt_cbc (xtea_context *ctx, int mode, size_t length, unsigned char iv[8], const unsigned char *input, unsigned char *output) |
XTEA CBC cipher function. | |
int | xtea_self_test (int verbose) |
Checkup routine. |
XTEA block cipher (32-bit).
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 xtea.h.
#define POLARSSL_ERR_XTEA_INVALID_INPUT_LENGTH -0x0028 |
The data input has an invalid length.
Definition at line 44 of file xtea.h.
Referenced by polarssl_strerror(), and xtea_crypt_cbc().
#define XTEA_DECRYPT 0 |
Definition at line 42 of file xtea.h.
Referenced by test_suite_xtea_decrypt_ecb(), and xtea_crypt_cbc().
#define XTEA_ENCRYPT 1 |
Definition at line 41 of file xtea.h.
Referenced by test_suite_xtea_encrypt_ecb(), xtea_crypt_ecb(), and xtea_self_test().
int xtea_crypt_cbc | ( | xtea_context * | ctx, | |
int | mode, | |||
size_t | length, | |||
unsigned char | iv[8], | |||
const unsigned char * | input, | |||
unsigned char * | output | |||
) |
XTEA CBC cipher function.
ctx | XTEA context | |
mode | XTEA_ENCRYPT or XTEA_DECRYPT | |
length | the length of input, multiple of 8 | |
iv | initialization vector for CBC mode | |
input | input block | |
output | output block |
Definition at line 118 of file xtea.c.
References POLARSSL_ERR_XTEA_INVALID_INPUT_LENGTH, xtea_crypt_ecb(), and XTEA_DECRYPT.
int xtea_crypt_ecb | ( | xtea_context * | ctx, | |
int | mode, | |||
const unsigned char | input[8], | |||
unsigned char | output[8] | |||
) |
XTEA cipher function.
ctx | XTEA context | |
mode | XTEA_ENCRYPT or XTEA_DECRYPT | |
input | 8-byte input block | |
output | 8-byte output block |
Definition at line 75 of file xtea.c.
References GET_UINT32_BE, xtea_context::k, PUT_UINT32_BE, and XTEA_ENCRYPT.
Referenced by test_suite_xtea_decrypt_ecb(), test_suite_xtea_encrypt_ecb(), xtea_crypt_cbc(), and xtea_self_test().
int xtea_self_test | ( | int | verbose | ) |
Checkup routine.
Definition at line 214 of file xtea.c.
References xtea_crypt_ecb(), XTEA_ENCRYPT, xtea_setup(), xtea_test_ct, xtea_test_key, and xtea_test_pt.
Referenced by test_suite_xtea_selftest().
void xtea_setup | ( | xtea_context * | ctx, | |
const unsigned char | key[16] | |||
) |
XTEA key schedule.
ctx | XTEA context to be initialized | |
key | the secret key |
Definition at line 60 of file xtea.c.
References GET_UINT32_BE, and xtea_context::k.
Referenced by test_suite_xtea_decrypt_ecb(), test_suite_xtea_encrypt_ecb(), and xtea_self_test().