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1、DES算法用C++实现的源代码 用C++实现的源代码#include"memory.h"#include"stdio.h"enum {encrypt,decrypt};//ENCRYPT:加密，DECRYPT：解密voiddes_run(charout[8],charin[8],booltype=encrypt);//设置密钥voiddes_setkey(constcharkey[8]);staticvoidf_func(boolin[32],constboolki[48]);//f函数staticvoids_func(boolout[
2、32],constboolin[48]);//s盒代替//变换staticvoidtransform(bool*out,bool*in,constchar*table,intlen);staticvoidxor(bool*ina,constbool*inb,intlen);//异或staticvoidrotatel(bool*in,intlen,intloop);//循环左移 //字节组转换成位组staticvoidbytetobit(bool*out,constchar*in,intbits);//位组转换成字节组staticvoid
3、bittobyte(char*out,constbool*in,intbits);//置换IP表conststaticcharip_table[64]={58,50,42,34,26,18,10,2,60,52,44,36,28,20,12,4,62,54,46,38,30,22,14,6,64,56,48,40,32,24,16,8,57,49,41,33,25,17,9,1,59,51,43,35,27,19,11,3,61,53,45,37,29,21,13,5,63,55,47,39,31,23,15,7};//逆置换IP-1表
4、conststaticcharipr_table[64]={40,8,48,16,56,24,64,32,39,7,47,15,55,23,63,31,38,6,46,14,54,22,62,30,37,5,45,13,53,21,61,29,36,4,44,12,52,20,60,28,35,3,43,11, 51,19,59,27,34,2,42,10,50,18,58,26,33,1,41,9,49,17,57,25};//E位选择表staticconstchare_table[48]={32,1,2,3,4,5,4,5,6,7,
5、8,9,8,9,10,11,12,13,12,13,14,15,16,17,16,17,18,19,20,21,20,21,22,23,24,25,24,25,26,27,28,29,28,29,30,31,32,1};//P换位表conststaticcharp_table[32]={16,7,20,21,29,12,28,17,1,15,23,26,5,18,31,10,2,8,24,14,32,27,3,9,19,13,30,6,22,11,4,25};//pc1选位表conststaticcharpc1_table[56]={
6、 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,
7、 30,22,14,6,61,53,45,37, 29,21,13,5,28,20,12,4};//pc2选位表conststaticcharpc2_table[48]={ 14,17,11,24,1,5,3,28, 15,6,21,10,23,19,12,4,
8、 26,8,16,7,27,20,13,2, 41,52,31,37,47,55,30,40,
