Atmel Software Framework

des.h File Reference

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.

Data Structures

struct  des3_context
 Triple-DES context structure. More...
 
struct  des_context
 DES context structure. More...
 

Macros

#define DES_DECRYPT   0
 
#define DES_ENCRYPT   1
 
#define POLARSSL_ERR_DES_INVALID_INPUT_LENGTH   -0x0C00
 

Functions

int des3_crypt_cbc (des3_context *ctx, int mode, int length, unsigned char iv[8], const unsigned char *input, unsigned char *output)
 3DES-CBC buffer encryption/decryption More...
 
int des3_crypt_ecb (des3_context *ctx, const unsigned char input[8], unsigned char output[8])
 3DES-ECB block encryption/decryption More...
 
void des3_set2key_dec (des3_context *ctx, const unsigned char key[16])
 Triple-DES key schedule (112-bit, decryption) More...
 
void des3_set2key_enc (des3_context *ctx, const unsigned char key[16])
 Triple-DES key schedule (112-bit, encryption) More...
 
void des3_set3key_dec (des3_context *ctx, const unsigned char key[24])
 Triple-DES key schedule (168-bit, decryption) More...
 
void des3_set3key_enc (des3_context *ctx, const unsigned char key[24])
 Triple-DES key schedule (168-bit, encryption) More...
 
int des_crypt_cbc (des_context *ctx, int mode, int length, unsigned char iv[8], const unsigned char *input, unsigned char *output)
 DES-CBC buffer encryption/decryption. More...
 
int des_crypt_ecb (des_context *ctx, const unsigned char input[8], unsigned char output[8])
 DES-ECB block encryption/decryption. More...
 
int des_self_test (int verbose)
 
void des_setkey_dec (des_context *ctx, const unsigned char key[8])
 DES key schedule (56-bit, decryption) More...
 
void des_setkey_enc (des_context *ctx, const unsigned char key[8])
 DES key schedule (56-bit, encryption) More...
 

#define DES_DECRYPT   0
#define DES_ENCRYPT   1

Referenced by main().

#define POLARSSL_ERR_DES_INVALID_INPUT_LENGTH   -0x0C00

int des3_crypt_cbc ( des3_context ctx,
int  mode,
int  length,
unsigned char  iv[8],
const unsigned char *  input,
unsigned char *  output 
)

3DES-CBC buffer encryption/decryption

Parameters
ctx3DES context
modeDES_ENCRYPT or DES_DECRYPT
lengthlength of the input data
ivinitialization vector (updated after use)
inputbuffer holding the input data
outputbuffer holding the output data
Returns
0 if successful, or POLARSSL_ERR_DES_INVALID_INPUT_LENGTH

Referenced by main().

int des3_crypt_ecb ( des3_context ctx,
const unsigned char  input[8],
unsigned char  output[8] 
)

3DES-ECB block encryption/decryption

Parameters
ctx3DES context
input64-bit input block
output64-bit output block
Returns
0 if successful
void des3_set2key_dec ( des3_context ctx,
const unsigned char  key[16] 
)

Triple-DES key schedule (112-bit, decryption)

Parameters
ctx3DES context to be initialized
key16-byte secret key
void des3_set2key_enc ( des3_context ctx,
const unsigned char  key[16] 
)

Triple-DES key schedule (112-bit, encryption)

Parameters
ctx3DES context to be initialized
key16-byte secret key
void des3_set3key_dec ( des3_context ctx,
const unsigned char  key[24] 
)

Triple-DES key schedule (168-bit, decryption)

Parameters
ctx3DES context to be initialized
key24-byte secret key
void des3_set3key_enc ( des3_context ctx,
const unsigned char  key[24] 
)

Triple-DES key schedule (168-bit, encryption)

Parameters
ctx3DES context to be initialized
key24-byte secret key

Referenced by main().

int des_crypt_cbc ( des_context ctx,
int  mode,
int  length,
unsigned char  iv[8],
const unsigned char *  input,
unsigned char *  output 
)

DES-CBC buffer encryption/decryption.

Parameters
ctxDES context
modeDES_ENCRYPT or DES_DECRYPT
lengthlength of the input data
ivinitialization vector (updated after use)
inputbuffer holding the input data
outputbuffer holding the output data

Referenced by main().

int des_crypt_ecb ( des_context ctx,
const unsigned char  input[8],
unsigned char  output[8] 
)

DES-ECB block encryption/decryption.

Parameters
ctxDES context
input64-bit input block
output64-bit output block
Returns
0 if successful
int des_self_test ( int  verbose)

Referenced by main().

void des_setkey_dec ( des_context ctx,
const unsigned char  key[8] 
)

DES key schedule (56-bit, decryption)

Parameters
ctxDES context to be initialized
key8-byte secret key
void des_setkey_enc ( des_context ctx,
const unsigned char  key[8] 
)

DES key schedule (56-bit, encryption)

Parameters
ctxDES context to be initialized
key8-byte secret key

Referenced by main().