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[/] [csa/] [trunk/] [sw_sim/] [key_perm.c] - Diff between revs 13 and 24
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Rev 24 |
/*
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/*
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* =====================================================================================
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* =====================================================================================
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*
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*
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* Filename: key_perm.c
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* Filename: key_perm.c
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*
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*
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* Description: this file tests the key_perm function
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* Description: this file tests the key_perm function
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*
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*
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* Version: 1.0
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* Version: 1.0
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* Created: 07/05/2008 07:51:58 AM
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* Created: 07/05/2008 07:51:58 AM
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* Revision: none
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* Revision: none
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* Compiler: gcc
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* Compiler: gcc
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*
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*
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* Author: mengxipeng$gmai.com
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* Author: mengxipeng$gmai.com
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* Company: mengxipeng
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* Company: mengxipeng
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*
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*
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* =====================================================================================
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* =====================================================================================
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*/
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*/
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#include <stdio.h>
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#include <stdio.h>
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#include <memory.h>
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#include <memory.h>
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extern unsigned char key_perm[0x40]; /* defined in csa.c */
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extern unsigned char key_perm[0x40]; /* defined in csa.c */
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unsigned char i_key[8];
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unsigned char i_key[8];
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unsigned char o_key[8];
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unsigned char o_key[8];
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int main()
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int main()
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{
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{
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int i;
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int i;
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int j;
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int j;
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int k;
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int k;
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unsigned char p;
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unsigned char p;
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int v;
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int v;
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int c;
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int c;
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int b;
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int b;
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/* first read the input key */
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/* first read the input key */
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memset(i_key,0,sizeof i_key);
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memset(i_key,0,sizeof i_key);
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for (i=63;i>=0;i--)
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for (i=63;i>=0;i--)
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{
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{
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c=getchar();
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c=getchar();
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printf("%c",c);
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printf("%c",c);
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if(c=='1')
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if(c=='1')
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{
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{
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i_key[i/8]|=(1<<(i%8));
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i_key[i/8]|=(1<<(i%8));
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}
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}
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}
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}
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printf("\n");
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printf("\n");
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/* now do the key_perm operatioin */
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/* now do the key_perm operatioin */
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memset(o_key,0,sizeof o_key);
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memset(o_key,0,sizeof o_key);
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/* 64 bit perm on kb */
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/* 64 bit perm on kb */
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for (j = 0; j < 8; j++)
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for (j = 0; j < 8; j++)
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{
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{
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for (k = 0; k < 8; k++)
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for (k = 0; k < 8; k++)
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{
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{
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b=key_perm[j*8+k]-1;
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b=key_perm[j*8+k]-1;
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if((i_key[j] >> (7 - k)) & 1)
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if((i_key[j] >> (7 - k)) & 1)
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{
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{
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o_key[b/8] |= (1<<(7-(b%8)));
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o_key[b/8] |= (1<<(7-(b%8)));
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}
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}
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}
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}
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}
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}
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/* output the o_key */
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/* output the o_key */
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for (i=63;i>=0;i--)
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for (i=63;i>=0;i--)
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{
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{
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if(o_key[i/8]&(1<<(i%8)))
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if(o_key[i/8]&(1<<(i%8)))
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printf("1");
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printf("1");
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else
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else
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printf("0");
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printf("0");
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}
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}
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printf("\n");
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printf("\n");
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return 0;
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return 0;
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}
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}
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