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Файл:Лабораторная работа №21 / serpent.tar / serpent-as-submitted / floppy2 / ecb_d_m
.c/* Copyright (C) 1998 Ross Anderson, Eli Biham, Lars Knudsen
* All rights reserved.
*
* This code is freely distributed for AES selection process.
* No other use is allowed.
*
* Copyright remains of the copyright holders, and as such any Copyright
* notices in the code are not to be removed.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only for the AES selection process, provided
* that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed without the authors permission.
* i.e. this code cannot simply be copied and put under another distribution
* licence [including the GNU Public Licence.]
*/
#include "serpent.h"
char *serpent_convert_to_string();
main(int argc, char **argv)
{
unsigned long text[4];
unsigned long textp[4];
int i, j;
unsigned long key[8];
char tmpstr[100];
int keylen;
printf("=========================\n");
printf("\n");
printf("FILENAME: \"ecb_d_m.txt\"\n");
printf("\n");
printf("Electronic Codebook (ECB) Mode - DECRYPTION\n");
printf("Monte Carlo Test\n");
printf("\n");
printf("Algorithm Name: Serpent\n");
printf("Principal Submitter: Ross Anderson, Eli Biham, Lars Knudsen\n");
printf("\n");
printf("==========\n");
printf("\n");
for(keylen=128; keylen<=256; keylen+=64)
{
int i;
int keyw=keylen/32;
int rc;
keyInstance keyI;
cipherInstance cipherI;
rc=cipherInit(&cipherI, MODE_ECB, "");
if(rc<=0) exit(2);
rc=makeKey(&keyI, DIR_ENCRYPT, keylen,
"0000000000000000000000000000000000000000000000000000000000000000");
if(rc<=0) exit(2);
serpent_convert_from_string(128, "00000000000000000000000000000000",
text);
printf("KEYSIZE=%d\n", keylen);
printf("\n");
for(i=0; i<400; i++)
{
int j;
printf("I=%d\n", i);
printf("KEY=%s\n", serpent_convert_to_string(keylen, keyI.key, tmpstr));
printf("CT=%s\n", serpent_convert_to_string(128, text, tmpstr));
for(j=0; j<10000; j++)
{
rc=blockDecrypt(&cipherI, &keyI, (BYTE*)text, 128, (BYTE*)text);
if(rc<=0) exit(2);
if(j==9998)
memcpy(textp, text, 16);
}
printf("PT=%s\n", serpent_convert_to_string(128, text, tmpstr));
printf("\n");
for(j=0; j<keyw; j++)
if(j>=keyw-4)
keyI.key[j] ^= text[j-(keyw-4)];
else
keyI.key[j] ^= textp[j-(keyw-8)];
rc=makeKey(&keyI, DIR_ENCRYPT, keylen,
serpent_convert_to_string(keylen, keyI.key, tmpstr));
if(rc<=0) exit(2);
}
printf("==========\n");
printf("\n");
}
exit(0);
}