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|
/*
+--------------------------------------------------------------------------+
| CHStone : a suite of benchmark programs for C-based High-Level Synthesis |
| ======================================================================== |
| |
| * Collected and Modified : Y. Hara, H. Tomiyama, S. Honda, |
| H. Takada and K. Ishii |
| Nagoya University, Japan |
| |
| * Remark : |
| 1. This source code is modified to unify the formats of the benchmark |
| programs in CHStone. |
| 2. Test vectors are added for CHStone. |
| 3. If "main_result" is 0 at the end of the program, the program is |
| correctly executed. |
| 4. Please follow the copyright of each benchmark program. |
+--------------------------------------------------------------------------+
*/
/* aes_key.c */
/*
* Copyright (C) 2005
* Akira Iwata & Masayuki Sato
* Akira Iwata Laboratory,
* Nagoya Institute of Technology in Japan.
*
* All rights reserved.
*
* This software is written by Masayuki Sato.
* And if you want to contact us, send an email to Kimitake Wakayama
* (wakayama@elcom.nitech.ac.jp)
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above 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.
*
* 3. All advertising materials mentioning features or use of this software must
* display the following acknowledgment:
* "This product includes software developed by Akira Iwata Laboratory,
* Nagoya Institute of Technology in Japan (http://mars.elcom.nitech.ac.jp/)."
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Akira Iwata Laboratory,
* Nagoya Institute of Technology in Japan (http://mars.elcom.nitech.ac.jp/)."
*
* THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY.
* AKIRA IWATA LABORATORY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL AKIRA IWATA LABORATORY BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTUOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/* **************key generate & key display *******************/
const int Rcon0[30] = {
0x01, 0x02, 0x04, 0x08,
0x10, 0x20, 0x40, 0x80,
0x1b, 0x36, 0x6c, 0xd8,
0xab, 0x4d, 0x9a, 0x2f,
0x5e, 0xbc, 0x63, 0xc6,
0x97, 0x35, 0x6a, 0xd4,
0xb3, 0x7d, 0xfa, 0xef,
0xc5, 0x91,
};
/* **************** key expand ************************ */
int
KeySchedule (int type, int key[32])
{
int nk, nb, round_val;
int i, j, temp[4];
switch (type)
{
case 128128:
nk = 4;
nb = 4;
round_val = 10;
break;
case 128192:
nk = 4;
nb = 6;
round_val = 12;
break;
case 128256:
nk = 4;
nb = 8;
round_val = 14;
break;
case 192128:
nk = 6;
nb = 4;
round_val = 12;
break;
case 192192:
nk = 6;
nb = 6;
round_val = 12;
break;
case 192256:
nk = 6;
nb = 8;
round_val = 14;
break;
case 256128:
nk = 8;
nb = 4;
round_val = 14;
break;
case 256192:
nk = 8;
nb = 6;
round_val = 14;
break;
case 256256:
nk = 8;
nb = 8;
round_val = 14;
break;
default:
return -1;
}
for (j = 0; j < nk; ++j)
for (i = 0; i < 4; ++i)
/* 0 word */
word[i][j] = key[i + j * 4];
/* expanded key is generated */
for (j = nk; j < nb * (round_val + 1); ++j)
{
/* RotByte */
if ((j % nk) == 0)
{
temp[0] = SubByte (word[1][j - 1]) ^ Rcon0[(j / nk) - 1];
temp[1] = SubByte (word[2][j - 1]);
temp[2] = SubByte (word[3][j - 1]);
temp[3] = SubByte (word[0][j - 1]);
}
if ((j % nk) != 0)
{
temp[0] = word[0][j - 1];
temp[1] = word[1][j - 1];
temp[2] = word[2][j - 1];
temp[3] = word[3][j - 1];
}
if (nk > 6 && j % nk == 4)
for (i = 0; i < 4; ++i)
temp[i] = SubByte (temp[i]);
for (i = 0; i < 4; ++i)
word[i][j] = word[i][j - nk] ^ temp[i];
}
return 0;
}
|
