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1、DES加密解密的C++源程序-测试版本，希望人家多多交流#include#include"stdio.h"#includeHmath.h"include"string.h"staticcharkey[16][48];staticcharHex[16][4];////IP置换。intIP[64]={58,50,42,34,26,18,10,2a60,52,44,36,28,20,12,4,、62,54,46,38,30,22,14,6a64,56,48,40,32,24,16,&57.49.41.33.25.17.9.1,59,51,43,35,27,19,1
2、1,3a61,53,45,37,29,21,13,5a63,55,47,39,31,23,15,7}；//IP-1置换。可根据IP表牛•成intIP_1[64]={40,8,48,16,56,24,64,32a39,7,47,15,55,23,63,31a38,6,46,14,54,22,62,30,37,5,45,13,53,21,61,29a36,4,44,12,52,20,60,2&35,3,43,11,51,19,59,27a34,2,42,10,50,18,58,26z33,1,41,9,49,17,57,25}；〃E扩展intE[48]={32.1,2Z3,4,5
3、,4,5,6,7,8,9Z8,9,10,11,1243,12,13,14,15,16,17,16,17,18,19,20,21,20,21,22,23,24,25,24,25,26,27,28,29,28,29,30,31,32,1}；//PC-1置换。intPC_1[56]={57,49,41,33,25,17,9,1,58,50,42,34,26,18,10,2,59,51,43,35,27,19,11,3,60,52,44,36,63,55,47,39,31,23,15,7,62,54,46,38,30,22,14,6,61,53,45,37,29,21,13,5,28,20,1
4、2,4}；//PC-2置换。intPC_2[48]={14,17,11,244,5,3,28,15,6,21,10,23,19,12,4,26,8,16,7,27,20,13,2,41,52,31,37,47,55,30,40,51,45,33,48,44,49,39,56,34,53,46,42,50,36,29,32}；//P置换intP[32]={16,7,20,21,29,12,28,17,1,15,23,26,5J&31,10,2,8,24,14,32,2739,19,13,30,6,22,11,4,25}；intS[8][4][16]=〃S盒1。S盒都可以口己设置{14,4
5、,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,〃s盒215,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10,3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5,0,14,7,11,10,4,13,1,5,8,1269,3,2,15,13,8,10,1345,4,241,6,7,12,0,5,14
6、,9,〃S盒310,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8,13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1,13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7,I,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12,〃S盒47,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15,13,8,11,5,6,15,0,3,4,7,乙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
7、,4,5,11,12,7,2,14,〃S盒52,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9,14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6,4,2,141,10,13,7,8,15,9,12,5,6,3,0,14,II,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3,〃S盒612,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11,10,15,4,2
