des C语言源代码，更换数据类型
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/********DES Encript by namgking*******"FileName:des_encode.h"*********//********compile on windows xp sp2,C-Free 3.5*******************************//********E-mail: namg2000@163.com*****************************************//********Author: namgking*****************************************************//********Note: if the code is of using,it's coded by namgking,*************//********or I don't know who did it!^_^****Modifyed date:2008-7-8*******/void EncodeMain(); //EncodeMain functionvoid DecodeMain(); //Sorry ,it has not usedvoid Decode(unsigned char *str,unsigned char *keychar); //decode :input 8 chars,8 keycharsvoid Encode(unsigned char *str,unsigned char *keychar); //encode: input 8 chars,8 keycharsvoid keyBuild(unsigned char *keychar); //create key arrayvoid StrtoBin(unsigned char *midkey,unsigned char *keychar); //change into binaryvoid keyCreate(unsigned char *midkey2,int movebit,int i); //call by keyBuildvoid EncodeData(unsigned char *lData,unsigned char *rData,unsigned char *srt); //encodedata functionvoid F(unsigned char *rData,unsigned char *key); //F functionvoid Expand(unsigned char *rData,unsigned char *rDataP); //Expand functionvoid ExchangeS(unsigned char *rDataP,unsigned char *rData); //S-diagram changevoid ExchangeP(unsigned char *rData); //P changevoid FillBin(unsigned char *rData,int n,int s); // data to binary;call by S-Diagram change functionvoid DecodeData(unsigned char *str,unsigned char *lData,unsigned char *rData); //DecodeData from binaryunsigned char IP1[]={58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, //initial change 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, };unsigned char IP2[]={40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31, //opp initial change 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 };/*unsigned char IP3[]= {40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31, //opp initial change 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 };*/unsigned char s[][4][16]={{ //S-diagram array {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}, {1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2}, {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} }};unsigned char Ex[48]={ 32,1,2,3,4,5, //Expand array 4,5,6,7,8,9, 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 };unsigned char P[32]={16,7,20,21, //P-change 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 };unsigned char PC1[56]={57,49,41,33,25,17,9, //PC-1 in keyBuild 1,58,50,42,34,26,18, 10,2,59,51,43,35,27, 19,11,3,60,52,44,36, 63,55,47,39,31,33,15, 7,62,54,46,38,30,22, 14,6,61,53,45,37,29, 21,13,5,28,20,12,4 };unsigned char PC2[48]={14,17,11,24,1,5, //PC-2 in keyBuild 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 };/********DES Encript by namgking*******"FileName:des_encode.cpp"************//********compile on windows xp sp2,C-Free 3.5*******************************//********E-mail: namg2000@163.com******************************************//********Author: namgking************************************************//********Note: if the code is of using,it's coded by namgking,*************//********or I don't know who did it!^_^****Modifyed date:2008-7-8**********/#include<stdio.h>#include<string.h>#include"des_encode.h"unsigned char key[16][48];char str[8];void main() //main function{ EncodeMain();}void EncodeMain() //EncodeMain function{ int i; char keychar[8]; unsigned char key2[8]; unsigned char strkey[8]; printf("请输入8个要加密的字符：/n"); for(i=0;i<8;i++) scanf("%c",&str[i]); getchar(); for(i=0;i<8;i++) strkey[i]=str[i]; printf("/n输入明文的十六进制为:/n"); for(i=0;i<8;i++) printf("%10x",strkey[i]); printf("/n请输入密钥(8个字符):/n"); for(i=0;i<8;i++) scanf("%c",&keychar[i]); for(i=0;i<8;i++) key2[i]=keychar[i]; getchar(); // printf("%c",keychar[i]); Encode(strkey,key2); printf("/n加密后十六进制密文是:/n"); for(i=0;i<8;i++) printf("%10x",strkey[i]); printf("/n/n清输入解密密码/n"); for(i=0;i<8;i++) scanf("%c",&keychar[i]); for(i=0;i<8;i++) key2[i]=keychar[i]; Decode(strkey,key2); for(i=0;i<8;i++) printf("%10x",strkey[i]); for(i=0;i<8;i++) str[i]=strkey[i]; printf("/n明文为：/t"); for(i=0;i<8;i++) printf("%c",str[i]); printf("/n/n");}void keyBuild(unsigned char *keychar){ //create key array int i,j; int movebit[]={1,1,2,2,2,2,2,2, 1,2,2,2,2,2,2,1}; unsigned char midkey2[56]; unsigned char midkey[64]; StrtoBin(midkey,keychar); for(i=0;i<56;i++) midkey2[i]=midkey[PC1[i]-1]; for(i=0;i<16;i++) keyCreate(midkey2,movebit[i],i); }void StrtoBin(unsigned char *midkey,unsigned char *keychar){ //change into binary int trans[8],i,j,k,n; n=0; for(i=0;i<8;i++){ j=0; while(keychar[i]!=0){ trans[j]=keychar[i]%2; keychar[i]=keychar[i]/2; j++; } for(k=j;k<8;k++)trans[k]=0; for(k=0;k<8;k++) midkey[n++]=trans[7-k]; } }void keyCreate(unsigned char *midkey2,int movebit,int n){ int i,temp[4]; temp[0]=midkey2[0]; temp[1]=midkey2[1]; temp[2]=midkey2[28]; temp[3]=midkey2[29]; if(movebit==2){ for(i=0;i<26;i++){ midkey2[i]=midkey2[i+2]; midkey2[i+28]=midkey2[i+30]; } midkey2[26]=temp[0];midkey2[27]=temp[1]; midkey2[54]=temp[2];midkey2[55]=temp[3]; } else { for(i=0;i<27;i++){ midkey2[i]=midkey2[i+1]; midkey2[i+28]=midkey2[i+29]; } midkey2[27]=temp[0];midkey2[55]=temp[2]; } for(i=0;i<48;i++) key[n][i]=midkey2[PC2[i]-1];}void EncodeData(unsigned char *lData,unsigned char *rData,unsigned char *str){ //encodedata function int i,j,temp[8],lint,rint;//int h; int data[64]; lint=0,rint=0; for(i=0;i<4;i++){ j=0; while(str[i]!=0){ temp[j]=str[i]%2; str[i]=str[i]/2; j++; } while(j<8)temp[j++]=0; for(j=0;j<8;j++) lData[lint++]=temp[7-j]; j=0; while(str[i+4]!=0){ temp[j]=str[i+4]%2; str[i+4]=str[i+4]/2; j++; } while(j<8)temp[j++]=0; for(j=0;j<8;j++)rData[rint++]=temp[7-j]; } for(i=0;i<32;i++){ data[i]=lData[i]; data[i+32]=rData[i]; } for(i=0;i<32;i++){ lData[i]=data[IP1[i]-1];//printf("P1:%5d:%5d,%5d/n",IP1[i],lData[i],data[IP1[i]-1]); rData[i]=data[IP1[i+32]-1]; } }void F(unsigned char *rData,unsigned char *key){ //F function int i; unsigned char rDataP[48]; Expand(rData,rDataP); for(i=0;i<48;i++){ rDataP[i]=rDataP[i]^key[i];// printf("%10d",rDataP[i]);if((i+1)%6==0)printf("/n"); } ExchangeS(rDataP,rData); ExchangeP(rData); }void Expand(unsigned char *rData,unsigned char *rDataP){ //Expand function int i; for(i=0;i<48;i++) rDataP[i]=rData[Ex[i]-1]; }void ExchangeS(unsigned char *rDataP,unsigned char *rData){ //S-diagram change int i,n,linex,liney; linex=liney=0; for(i=0;i<48;i+=6){ n=i/6; //printf("%10d/n",(rDataP[i]<<1)); linex=(rDataP[i]<<1)+rDataP[i+5]; liney=(rDataP[i+1]<<3)+(rDataP[i+2]<<2)+(rDataP[i+3]<<1)+rDataP[i+4]; FillBin(rData,n,s[n][linex][liney]); } }void ExchangeP(unsigned char *rData){ //P change int i,temp[32]; for(i=0;i<32;i++) temp[i]=rData[i]; for(i=0;i<32;i++) rData[i]=temp[P[i]-1]; }void FillBin(unsigned char *rData,int n,int s){ // data to binary;call by S-Diagram change function int temp[4],i; for(i=0;i<4;i++){ temp[i]=s%2; s=s/2; } for(i=0;i<4;i++) rData[n*4+i]=temp[3-i]; }void DecodeData(unsigned char *str,unsigned char *lData,unsigned char *rData){ //DecodeData from binary int i;int a,b;int data[64]; a=0,b=0; for(i=0;i<32;i++){ data[i]=lData[i]; data[i+32]=rData[i]; } for(i=0;i<32;i++){ lData[i]=data[IP2[i]-1]; rData[i]=data[IP2[i+32]-1]; } for(i=0;i<32;i++){ a=(lData[i]&0x1)+(a<<1); b=(rData[i]&0x1)+(b<<1); if((i+1)%8==0){ str[i/8]=a;a=0;//printf("%d",i/8); str[i/8+4]=b;b=0;//printf("%d",i/8+4); } } } void Encode(unsigned char *str,unsigned char *keychar){ //encode: input 8 chars,8 keychars unsigned char lData[32],rData[32],temp[32],rDataP[48]; int i,j; keyBuild(keychar); EncodeData(lData,rData,str); for(i=0;i<16;i++){ for(j=0;j<32;j++) temp[j]=rData[j]; F(rData,key[i]); for(j=0;j<32;j++){ rData[j]=rData[j]^lData[j]; } for(j=0;j<32;j++) lData[j]=temp[j]; } DecodeData(str,rData,lData);}void Decode(unsigned char *str,unsigned char *keychar){ //decode :input 8 chars,8 keychars unsigned char lData[32],rData[32],temp[32],rDataP[48]; int i,j; keyBuild(keychar); EncodeData(lData,rData,str); //这个位置 for(i=0;i<16;i++){ for(j=0;j<32;j++) temp[j]=rData[j]; F(rData,key[15-i]); for(j=0;j<32;j++){ rData[j]=rData[j]^lData[j]; } for(j=0;j<32;j++){ lData[j]=temp[j]; } } DecodeData(str,rData,lData);}<script type="text/javascript"><!--google_ad_client = "pub-3527323059587280";/* 468x60, 创建于 08-10-10 */google_ad_slot = "6038158497";google_ad_width = 468;google_ad_height = 60;//--></script><script type="text/javascript"src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>
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