des1.h

信息安全课上project,des算法的程序,不知道有没有用.

#include<stdio.h>
FILE *fpm, *fpk;
FILE *fpc, *fpa;

int subkey[4][48];

int S[8][4][16] ={{{14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7}, 
				{0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8},
				{4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0},
				{15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13}},

				{{15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10},
				{3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5},
				{0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15},
				{13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9}},

				{{10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8},
				{13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1},
				{13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7},
				{1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12}},

				{{7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15},
				{13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9},
				{10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4},
				{3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14}},

				{{2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9},
				{14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6},
				{4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14},
				{11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3}},

				{{12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11},
				{10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8},
				{9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6},
				{4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13}},

				{{4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1},
				{13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6},
				{1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2},
				{6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12}},

				{{13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7},
				{1,15,13,5,10,3,7,4,12,5,6,11,0,14,9,2},
				{7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8},
				{2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11}}};

int IPC[56] = {56,48,40,32,24,16,8,0,57,49,41,33,25,17,9,
				1,58,50,42,34,26,18,10,2,59,51,43,35,62,
				54,46,38,30,22,14,6,61,53,45,37,29,21,13,5,
				60,52,44,36,28,20,12,4,27,19,11,3};

int P[32] = {15, 6, 19, 20, 28, 11, 27, 16, 0, 14, 22, 25, 4, 17, 30, 9,
				1, 7, 23, 13, 31, 26, 2, 8, 18, 12, 29, 5, 21, 10, 3, 24};

int CYC[4] = {1,1,2,2};

int PC[48] = {13,16,10,23,0,4,2,27,14,5,20,9,22,18,11,3,
			25,7,15,6,26,19,12,1,40,51,30,36,46,54,29,39,
			50,44,32,47,43,48,38,55,33,52,45,41,49,35,28,31};

int E[48] = {31,0,1,2,3,4,3,4,5,6,7,8,7,8,9,10,11,12,11, 12,13,14,15,16,
				15,16,17,18,19,20,19,20,21,22,23,24,23,24,25,26,27,
				28,27,28,29,30,31,0};

int IP[64] = {57,49,41,33,25,17,9,1,59,51,43,35,27,19,11,3,
				61,53,45,37,29,21,13,5,63,55,47,39,31,23,15,7,
				56,48,40,32,24,16,8,0,58,50,42,34,26,18,10,2,
				60,52,44,36,28,20,12,4,62,54,46,38,30,22,14,6};

int IPN[64] = {39,7,47,15,55,23,63,31,38,6,46,14,54,22,62,30,
				37,5,45,13,53,21,61,29,36,4,44,12,52,20,60,28,
				35,3,43,11,51,19,59,27,34,2,42,10,50,18,58,26,
				33,1,41,9,49,17,57,25,32,0,40,8,48,16,56,24};

int IV[64] = {1,0,0,1,0,1,0,0,1,0,1,0,1,0,0,0,0,1,1,0,1,0,1,0,
			1,1,1,0,0,0,1,0,1,0,1,0,0,0,0,0,0,1,0,1,0,1,0,1,0,
			1,0,0,1,0,1,0,1,0,1,0,0,0,0,1};


int * cipher(int *m, int *c);
void makesubkey(int *key);
int * F(int *a, int *b);
void decipher1(FILE *c, FILE *a);
void CBC(FILE *m, FILE *c);
void error();