mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-12-27 20:25:37 +00:00
293 lines
7.5 KiB
C
293 lines
7.5 KiB
C
/**
|
|
* \file des.h
|
|
*
|
|
* \brief DES block cipher
|
|
*
|
|
* Copyright (C) 2006-2014, 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.
|
|
*/
|
|
#ifndef POLARSSL_DES_H
|
|
#define POLARSSL_DES_H
|
|
|
|
#if !defined(POLARSSL_CONFIG_FILE)
|
|
#include "config.h"
|
|
#else
|
|
#include POLARSSL_CONFIG_FILE
|
|
#endif
|
|
|
|
#include <string.h>
|
|
|
|
#if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
|
|
#include <basetsd.h>
|
|
typedef UINT32 uint32_t;
|
|
#else
|
|
#include <inttypes.h>
|
|
#endif
|
|
|
|
#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
|
|
|
|
#if !defined(POLARSSL_DES_ALT)
|
|
// Regular implementation
|
|
//
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief DES context structure
|
|
*/
|
|
typedef struct
|
|
{
|
|
int mode; /*!< encrypt/decrypt */
|
|
uint32_t sk[32]; /*!< DES subkeys */
|
|
}
|
|
des_context;
|
|
|
|
/**
|
|
* \brief Triple-DES context structure
|
|
*/
|
|
typedef struct
|
|
{
|
|
int mode; /*!< encrypt/decrypt */
|
|
uint32_t sk[96]; /*!< 3DES subkeys */
|
|
}
|
|
des3_context;
|
|
|
|
/**
|
|
* \brief Initialize DES context
|
|
*
|
|
* \param ctx DES context to be initialized
|
|
*/
|
|
void des_init( des_context *ctx );
|
|
|
|
/**
|
|
* \brief Clear DES context
|
|
*
|
|
* \param ctx DES context to be cleared
|
|
*/
|
|
void des_free( des_context *ctx );
|
|
|
|
/**
|
|
* \brief Initialize Triple-DES context
|
|
*
|
|
* \param ctx DES3 context to be initialized
|
|
*/
|
|
void des3_init( des3_context *ctx );
|
|
|
|
/**
|
|
* \brief Clear Triple-DES context
|
|
*
|
|
* \param ctx DES3 context to be cleared
|
|
*/
|
|
void des3_free( des3_context *ctx );
|
|
|
|
/**
|
|
* \brief 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.
|
|
*
|
|
* \param key 8-byte secret key
|
|
*/
|
|
void des_key_set_parity( unsigned char key[DES_KEY_SIZE] );
|
|
|
|
/**
|
|
* \brief 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.
|
|
*
|
|
* \param key 8-byte secret key
|
|
*
|
|
* \return 0 is parity was ok, 1 if parity was not correct.
|
|
*/
|
|
int des_key_check_key_parity( const unsigned char key[DES_KEY_SIZE] );
|
|
|
|
/**
|
|
* \brief Check that key is not a weak or semi-weak DES key
|
|
*
|
|
* \param key 8-byte secret key
|
|
*
|
|
* \return 0 if no weak key was found, 1 if a weak key was identified.
|
|
*/
|
|
int des_key_check_weak( const unsigned char key[DES_KEY_SIZE] );
|
|
|
|
/**
|
|
* \brief DES key schedule (56-bit, encryption)
|
|
*
|
|
* \param ctx DES context to be initialized
|
|
* \param key 8-byte secret key
|
|
*
|
|
* \return 0
|
|
*/
|
|
int des_setkey_enc( des_context *ctx, const unsigned char key[DES_KEY_SIZE] );
|
|
|
|
/**
|
|
* \brief DES key schedule (56-bit, decryption)
|
|
*
|
|
* \param ctx DES context to be initialized
|
|
* \param key 8-byte secret key
|
|
*
|
|
* \return 0
|
|
*/
|
|
int des_setkey_dec( des_context *ctx, const unsigned char key[DES_KEY_SIZE] );
|
|
|
|
/**
|
|
* \brief Triple-DES key schedule (112-bit, encryption)
|
|
*
|
|
* \param ctx 3DES context to be initialized
|
|
* \param key 16-byte secret key
|
|
*
|
|
* \return 0
|
|
*/
|
|
int des3_set2key_enc( des3_context *ctx,
|
|
const unsigned char key[DES_KEY_SIZE * 2] );
|
|
|
|
/**
|
|
* \brief Triple-DES key schedule (112-bit, decryption)
|
|
*
|
|
* \param ctx 3DES context to be initialized
|
|
* \param key 16-byte secret key
|
|
*
|
|
* \return 0
|
|
*/
|
|
int des3_set2key_dec( des3_context *ctx,
|
|
const unsigned char key[DES_KEY_SIZE * 2] );
|
|
|
|
/**
|
|
* \brief Triple-DES key schedule (168-bit, encryption)
|
|
*
|
|
* \param ctx 3DES context to be initialized
|
|
* \param key 24-byte secret key
|
|
*
|
|
* \return 0
|
|
*/
|
|
int des3_set3key_enc( des3_context *ctx,
|
|
const unsigned char key[DES_KEY_SIZE * 3] );
|
|
|
|
/**
|
|
* \brief Triple-DES key schedule (168-bit, decryption)
|
|
*
|
|
* \param ctx 3DES context to be initialized
|
|
* \param key 24-byte secret key
|
|
*
|
|
* \return 0
|
|
*/
|
|
int des3_set3key_dec( des3_context *ctx,
|
|
const unsigned char key[DES_KEY_SIZE * 3] );
|
|
|
|
/**
|
|
* \brief DES-ECB block encryption/decryption
|
|
*
|
|
* \param ctx DES context
|
|
* \param input 64-bit input block
|
|
* \param output 64-bit output block
|
|
*
|
|
* \return 0 if successful
|
|
*/
|
|
int des_crypt_ecb( des_context *ctx,
|
|
const unsigned char input[8],
|
|
unsigned char output[8] );
|
|
|
|
#if defined(POLARSSL_CIPHER_MODE_CBC)
|
|
/**
|
|
* \brief DES-CBC buffer encryption/decryption
|
|
*
|
|
* \param ctx DES context
|
|
* \param mode DES_ENCRYPT or DES_DECRYPT
|
|
* \param length length of the input data
|
|
* \param iv initialization vector (updated after use)
|
|
* \param input buffer holding the input data
|
|
* \param output buffer holding the output data
|
|
*/
|
|
int des_crypt_cbc( des_context *ctx,
|
|
int mode,
|
|
size_t length,
|
|
unsigned char iv[8],
|
|
const unsigned char *input,
|
|
unsigned char *output );
|
|
#endif /* POLARSSL_CIPHER_MODE_CBC */
|
|
|
|
/**
|
|
* \brief 3DES-ECB block encryption/decryption
|
|
*
|
|
* \param ctx 3DES context
|
|
* \param input 64-bit input block
|
|
* \param output 64-bit output block
|
|
*
|
|
* \return 0 if successful
|
|
*/
|
|
int des3_crypt_ecb( des3_context *ctx,
|
|
const unsigned char input[8],
|
|
unsigned char output[8] );
|
|
|
|
#if defined(POLARSSL_CIPHER_MODE_CBC)
|
|
/**
|
|
* \brief 3DES-CBC buffer encryption/decryption
|
|
*
|
|
* \param ctx 3DES context
|
|
* \param mode DES_ENCRYPT or DES_DECRYPT
|
|
* \param length length of the input data
|
|
* \param iv initialization vector (updated after use)
|
|
* \param input buffer holding the input data
|
|
* \param output buffer holding the output data
|
|
*
|
|
* \return 0 if successful, or POLARSSL_ERR_DES_INVALID_INPUT_LENGTH
|
|
*/
|
|
int des3_crypt_cbc( des3_context *ctx,
|
|
int mode,
|
|
size_t length,
|
|
unsigned char iv[8],
|
|
const unsigned char *input,
|
|
unsigned char *output );
|
|
#endif /* POLARSSL_CIPHER_MODE_CBC */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#else /* POLARSSL_DES_ALT */
|
|
#include "des_alt.h"
|
|
#endif /* POLARSSL_DES_ALT */
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief Checkup routine
|
|
*
|
|
* \return 0 if successful, or 1 if the test failed
|
|
*/
|
|
int des_self_test( int verbose );
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* des.h */
|