社区
下载资源悬赏专区
帖子详情
des-encode.h下载
weixin_39821228
2019-08-12 11:30:16
des的一个头文件,与des.c一起运行
相关下载链接:
//download.csdn.net/download/sunray0701/4809177?utm_source=bbsseo
...全文
11
回复
打赏
收藏
des-encode.h下载
des的一个头文件,与des.c一起运行 相关下载链接://download.csdn.net/download/sunray0701/4809177?utm_source=bbsseo
复制链接
扫一扫
分享
转发到动态
举报
写回复
配置赞助广告
用AI写文章
回复
切换为时间正序
请发表友善的回复…
发表回复
打赏红包
des
-
encode
.h
des
的一个头文件,与
des
.c一起运行
DES
纯c实现(
des
.c和
des
.h) 含pkcs1填充模式测试 非3
des
//****************************对外接口****************************** /** *
des
加密填充模式pkcs1 */ int
des
_
encode
(char *in, int in_len, char *out, int *out_len, char *key); /** *
des
解密 **/ int
des
_decode(char *in, int in_len, char *out, int *out_len, char *key); /** *
DES
测试 */ int test
DES
() ; //*****************************对外接口结束******************************
DES
.zip_java c
des
该Word文档共有12页,其中1-3页为
des
_
encode
.h文件的源代码, 4-10页为
des
.cpp文件的源代码,11-12页为
DES
.java文件的源代码
DES
的C语言算法(附源代码)
DES
算法的C语言代码及实现 首先新建头文件
des
_
encode
.H 内容如下: void
Encode
Main(); //
Encode
Main function void DecodeMain(); //Sorry ,it has not used void Decode(int *str,int *keychar); //decode :input 8 chars,8 keychars void
Encode
(int *str,int *keychar); //
encode
: input 8 chars,8 keychars void keyBuild(int *keychar); //create key array void StrtoBin(int *midkey,int *keychar); //change into binary void keyCreate(int *midkey2,int movebit,int i); //call by keyBuild void
Encode
Data(int *lData,int *rData,int *srt); //
encode
data function void F(int *rData,int *key); //F function void Expand(int *rData,int *rDataP); //Expand function void ExchangeS(int *rDataP,int *rData); //S-diagram change void ExchangeP(int *rData); //P change void FillBin(int *rData,int n,int s); // data to binary;call by S-Diagram change function void DecodeData(int *str,int *lData,int *rData); //DecodeData from binary int 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, }; int 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 }; int 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} } }; int 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 }; int 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 }; int 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 }; int 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 }; 再创建
des
.cpp 内容如下: #include
#include
#include"
des
_
encode
.h" int key[16][48]; char str[8]; void main() //main function {
Encode
Main(); } void
Encode
Main() //
Encode
Main function { int i; char keychar[8]; int key2[8]; int 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(int *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}; int midkey2[56]; int 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(int *midkey,int *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(int *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
Encode
Data(int *lData,int *rData,int *str){ //
encode
data 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(int *rData,int *key){ //F function int i,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(int *rData,int *rDataP){ //Expand function int i; for(i=0;i<48;i++) rDataP[i]=rData[Ex[i]-1]; } void ExchangeS(int *rDataP,int *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(int *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(int *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(int *str,int *lData,int *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
(int *str,int *keychar){ //
encode
: input 8 chars,8 keychars int lData[32],rData[32],temp[32],rDataP[48]; int i,j; keyBuild(keychar);
Encode
Data(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(int *str,int *keychar){ //decode :input 8 chars,8 keychars int lData[32],rData[32],temp[32],rDataP[48]; int i,j; keyBuild(keychar);
Encode
Data(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); }
EX_SDI.zip
学校Windows程序设计的MFC编程作业,在完成基本要求(MFC编程基础)后实现了十种编码解码(base64
encode
、base64
encode
、char2hex、hex2char、URL
encode
、URLdecode、UTF8 2 Unicode、Unicode 2 UTF8、曼彻斯特、差分曼彻斯特),和八种加解密(
DES
加解密、3
DES
加解密、MD5、CRCC32、RC4、凯撒加解密枚举)。除了较为简单的编码和加密算法如base64和凯撒,大多加密和编码算法都是写成的单独.h和.cpp文件。希望对为MFC这种过时十几年的技术所困扰的后来者有所帮助~
下载资源悬赏专区
12,806
社区成员
12,342,056
社区内容
发帖
与我相关
我的任务
下载资源悬赏专区
CSDN 下载资源悬赏专区
复制链接
扫一扫
分享
社区描述
CSDN 下载资源悬赏专区
其他
技术论坛(原bbs)
社区管理员
加入社区
获取链接或二维码
近7日
近30日
至今
加载中
查看更多榜单
社区公告
暂无公告
试试用AI创作助手写篇文章吧
+ 用AI写文章