des加密文件c

① Des加密解密方法 用java C#和C++三种方式实现

Solaris下的系统，有一个用C做的加密工具，调用Sunwcry的des(1)对文件进行加密，然后在java中对文件进行解密。java中用的是标准的DES/CBC/NoPadding算法，可是解密后发现开头有8byte的数据出错了，请高人指点一下。

cbc_encrypt.c ： 加密用的C程序

cbc_decrypt.c：解密用的C程序

TestDescbc.java：解密用的java程序

Test01.dat原始文件
Test03.dat cbc_encrypt加密后的文件
Test05.dat cbc_decrypt解密后的文件

Test06.dat TestDescbc解密后的文件

② 如何实现c语言的DES加密算法实现，请关注

可能很长 ，这是在我以前一个程序里摘出来的。 原理：用户输入创建密码，机器读取，并把每一位密码进行加密，这里就是把每一位的 ASCII码加一（也可以有其他的加密方式），然后保存在文件里。解密时从文件中读取保存的乱码，然后把它每一位的asc

③ DES加密算法C语言实现

/*********************************************************************/
/*-文件名：des.h */
/*- */
/*-功能： 实现DES加密算法的加密解密功能 */
/*********************************************************************/
typedef int INT32;
typedef char INT8;
typedef unsigned char ULONG8;
typedef unsigned short ULONG16;
typedef unsigned long ULONG32;

/*如果采用c++编译器的话采用如下宏定义
#define DllExport extern "C" __declspec(dllexport)
*/

#define DllExport __declspec(dllexport)

/*加密接口函数*/
DllExport INT32 DdesN(ULONG8 *data, ULONG8 **key, ULONG32 n_key,ULONG32 readlen);
DllExport INT32 desN(ULONG8 *data, ULONG8 **key, ULONG32 n_key,ULONG32 readlen);
DllExport INT32 des3(ULONG8 *data, ULONG8 *key,ULONG32 n ,ULONG32 readlen);
DllExport INT32 Ddes3(ULONG8 *data,ULONG8 *key,ULONG32 n ,ULONG32 readlen);
DllExport INT32 des(ULONG8 *data, ULONG8 *key,INT32 readlen);
DllExport INT32 Ddes(ULONG8 *data,ULONG8 *key,INT32 readlen);

*********************************************************************/
/*-文件名：des.c */
/*- */
/*-功能： 实现DES加密算法的加密解密功能 */
//*********************************************************************/
＃include <stdlib.h>
＃include <stdio.h>
＃include <string.h>
＃include <memory.h>
＃include <malloc.h>
＃include "des.h"

#define SUCCESS 0
#define FAIL -1

#define READFILESIZE 512

#define WZ_COMMEND_NUM 4
#define WZUSEHELPNUM 19
#define DESONE 1
#define DESTHREE 2
#define DESMULTI 3
INT8 *WZ_Commend_Help[] =
{

"基于DES的加密解密工具v1.0 ",/*0*/
"追求卓越,勇于创新 ",
"----着者 : 吴真--- ",
" "
};

INT8 *WZ_USE_HELP[]={
"输入5+n个参数:",
"\t1.可执行文件名 *.exe",
"\t2.操作类型 1:一层加密;2:一层解密;",
"\t\t13:N层单密钥加密;23:N层单密钥解密;",
"\t\t39:N层多密钥加密;49:N层多密钥解密",
"\t3.读出数据的文件名*.txt",
"\t4.写入数据的文件名*.txt",
"\t5.密钥(8字节例如:wuzhen12)",
"\t[6].N层单密钥的层数或者...二层加密|解密密钥",
"\t[7].三层加密|解密密钥",
"\t[8]. ...",
"\t[N].N层加密|解密密钥",
"\t 例1: des 1 1.txt 2.txt 12345678",
"\t : des 2 2.txt 3.txt 12345678",
"\t 例2: des 13 1.txt 2.txt tiantian 5",
"\t : des 23 2.txt 3.txt tiantian 5",
"\t 例3: des 39 1.txt 2.txt 12345678 tiantian gaoxinma",
"\t : des 49 2.txt 3.txt 12345678 tiantian gaoxinma",
"******************************"
};

INT32 hextofile( ULONG8 *buf ,FILE *writefile, ULONG32 length);/*以16进制写入文件*/
INT32 encodehex(ULONG8 *tobuf,ULONG8 *frombuf,ULONG32 len);/*16进制解码*/

INT32 file_enc(FILE *readfile,FILE *writefile,
ULONG8 *key,ULONG32 keynum,
ULONG8 **superkey,ULONG32 n_superkey,
ULONG8 flag);
INT32 file_dec(FILE *readfile,FILE *writefile,
ULONG8 *key,ULONG32 keynum,
ULONG8 **superkey,ULONG32 n_superkey,
ULONG8 flag);
void wz_print_help();

INT32 main(INT32 argc,INT8 *argv[])
{
INT8 *FILENAME1,*FILENAME2;
FILE *fp, *fp2;
ULONG8 *key ;
ULONG8 **superkey ;/*n层加密解密密钥*/
ULONG8 n_superkey ;
ULONG32 num;

if ( argc >= 5 && (atoi(argv[1]) == 39 || atoi(argv[1]) == 49 ) )
{
n_superkey = argc - 4 ;
superkey = ( INT8 **)calloc(1, n_superkey*sizeof( void *) ) ;
for ( num = 0 ; num < n_superkey ; num++)
{
superkey[num] = argv[4+num] ;
}

}
else if ( argc == 6 && (atoi(argv[1]) == 13 || atoi(argv[1]) == 23 ) && (atoi(argv[5])) > 0)
{

}
else if ( argc == 5 && ( atoi(argv[1]) == 1 || atoi(argv[1]) == 2 ))
{

}
else
{
wz_print_help();
return FAIL;
}
FILENAME1 = argv[2];
FILENAME2 = argv[3];
if ((fp= fopen(FILENAME1,"rb")) == NULL || (fp2 = fopen(FILENAME2,"wb"))==NULL)
{

printf("Can't open file\n");
return FAIL;
}

key = argv[4] ;
switch( atoi(argv[1] ))
{
case 1: /*加密*/
file_enc(fp,fp2,key,0, NULL,0, DESONE);
printf("\n \tDES 一层加密完毕,密文存于%s文件\n",FILENAME2);
break;
case 2:
file_dec(fp,fp2,key,0, NULL, 0,DESONE);
printf("\n \tDES 一层解密完毕,密文存于%s文件\n",FILENAME2);
break;
case 13:
file_enc(fp,fp2,key,atoi(argv[5]),NULL,0,DESTHREE);
printf("\n \tDES %u层单密钥加密完毕,密文存于%s文件\n",atoi(argv[5]),FILENAME2);
break;
case 23:
file_dec(fp,fp2,key,atoi(argv[5]),NULL,0,DESTHREE);
printf("\n \tDES %u层单密钥解密完毕,密文存于%s文件\n",atoi(argv[5]),FILENAME2);
break;
case 39:
file_enc(fp,fp2,NULL,0,superkey,n_superkey,DESMULTI);
printf("\n \tDES 多密钥加密完毕,密文存于%s文件\n",FILENAME2);
free(superkey);
superkey = NULL;
break;
case 49:
file_dec(fp,fp2,NULL,0,superkey,n_superkey,DESMULTI);
printf("\n \tDES 多密钥加密完毕,密文存于%s文件\n",FILENAME2);
free(superkey);
superkey = NULL;
break;
default:
printf("请选择是加密|解密 plese choose encrypt|deencrypt\n");
break;
}

fclose(fp);
fclose(fp2);
return SUCCESS;

}

void wz_print_help()
{
INT32 i ;
printf("\t");
for ( i = 0 ; i < 22 ; i++)
{
printf("%c ",5);
}
printf("\n");
for( i = 0 ; i < WZ_COMMEND_NUM ; i++)
{
printf("\t%c\t%s %c\n",5,WZ_Commend_Help[i],5);
}
printf("\t");
for ( i = 0 ; i < 22 ; i++)
{
printf("%c ",5);
}
printf("\n");
for( i = 0 ; i < WZUSEHELPNUM ; i++)
{
printf("\t%s\n",WZ_USE_HELP[i]);
}
return ;
}

INT32 file_enc(FILE *readfile,FILE *writefile,
ULONG8 *key,ULONG32 keynum,
ULONG8 **superkey,ULONG32 n_superkey,
ULONG8 flag)
{
INT32 filelen = 0,readlen = 0,writelen = 0;
ULONG32 totalfilelen = 0 ;/*统计实际的文件的长度*/
ULONG8 readbuf[READFILESIZE] = { 0 };
filelen = fread( readbuf, sizeof( INT8 ), READFILESIZE, readfile );
while( filelen == READFILESIZE )
{
totalfilelen += READFILESIZE;
switch(flag)
{
case DESONE:
des( readbuf,key,READFILESIZE);
break;
case DESTHREE:
des3( readbuf, key ,keynum,READFILESIZE);
break;
case DESMULTI:
desN( readbuf, superkey ,n_superkey,READFILESIZE);
break;
}
hextofile( readbuf, writefile, READFILESIZE );/*以16进制形式写入文件*/
memset(readbuf,0,READFILESIZE);
filelen = fread( readbuf, sizeof( INT8 ), READFILESIZE, readfile );
}
/*这是从文件中读出的最后一批数据,长度可能会等于0,所以要先判断*/

if ( filelen > 0 )
{
/*如果从文件中读出的长度不等于0,那么肯定有8个字节以上的空间
文件长度存在最后8个字节中*/
totalfilelen += filelen;
memcpy( &readbuf[READFILESIZE-8], (ULONG8*)&totalfilelen,4);
switch(flag)
{
case DESONE:
des( readbuf,key,READFILESIZE);
break;
case DESTHREE:
des3( readbuf, key ,keynum,READFILESIZE);
break;
case DESMULTI:
desN( readbuf, superkey ,n_superkey,READFILESIZE);
break;
}
hextofile( readbuf, writefile,READFILESIZE );/*以16进制形式写入文件*/
memset(readbuf,0 ,READFILESIZE);
}
else /*filelen == 0*/
{
memcpy( &readbuf[0], (ULONG8*)&totalfilelen,4);
switch(flag)
{
case DESONE:
des( readbuf,key,8);
break;
case DESTHREE:
des3( readbuf, key ,keynum,8);
break;
case DESMULTI:
desN( readbuf, superkey ,n_superkey,8);
break;
}
hextofile( readbuf, writefile, 8);/*以16进制形式写入文件*/
}
return SUCCESS;
}

INT32 file_dec(FILE *readfile,FILE *writefile,
ULONG8 *key,ULONG32 keynum,
ULONG8 **superkey,ULONG32 n_superkey,
ULONG8 flag)
{
INT32 filelen = 0,readlen = 0,writelen = 0;
ULONG32 totalfilelen = 0 ;/*统计实际的文件的长度*/
INT32 num = 0;
ULONG8 readbuf[READFILESIZE] = { 0 };
ULONG8 sendbuf[READFILESIZE*2] = { 0 };

fseek(readfile,-16,SEEK_END);/*最后16个字节的表示文件长度的空间*/
filelen = fread( sendbuf, sizeof( INT8 ), 16, readfile );
encodehex( readbuf,sendbuf,8);
switch(flag)
{
case DESONE:
Ddes( readbuf,key,8);
break;
case DESTHREE:
Ddes3( readbuf, key ,keynum,8);
break;
case DESMULTI:
DdesN( readbuf, superkey ,n_superkey,8);
break;
}
/*解密*/
memcpy((ULONG8*)&totalfilelen, &readbuf[0],4);/*得到文件总长*/
memset(readbuf,0 ,8);
memset(sendbuf,0 ,16);

num = totalfilelen/READFILESIZE;/*有几个READFILESIZE组*/
totalfilelen %= READFILESIZE;

fseek(readfile,0,SEEK_SET);/*跳到文件头*/
while(num--)
{
filelen = fread( sendbuf, sizeof( INT8 ), READFILESIZE*2, readfile );
encodehex( readbuf,sendbuf,READFILESIZE);
switch(flag)
{
case DESONE:
Ddes( readbuf,key,READFILESIZE);
break;
case DESTHREE:
Ddes3( readbuf, key ,keynum,READFILESIZE);
break;
case DESMULTI:
DdesN( readbuf, superkey ,n_superkey,READFILESIZE);
break;
}

writelen = fwrite(readbuf, sizeof( INT8 ), READFILESIZE, writefile);
memset(readbuf,0 ,READFILESIZE);
memset(sendbuf,0 ,READFILESIZE*2);
}
if ( totalfilelen > 0 )/*最后一块有多余的元素*/
{
filelen = fread( sendbuf, sizeof( INT8 ), READFILESIZE*2, readfile );
encodehex( readbuf,sendbuf,READFILESIZE);
switch(flag)
{
case DESONE:
Ddes( readbuf,key,READFILESIZE);
break;
case DESTHREE:
Ddes3( readbuf, key ,keynum,READFILESIZE);
break;
case DESMULTI:
DdesN( readbuf, superkey ,n_superkey,READFILESIZE);
break;
}
writelen = fwrite(readbuf, sizeof( INT8 ), totalfilelen, writefile);
memset(readbuf,0 ,READFILESIZE);
memset(sendbuf,0 ,READFILESIZE*2);

}
return SUCCESS;
}

INT32 hextofile( ULONG8 *buf ,FILE *writefile, ULONG32 length)
{
ULONG32 writelen = 0 ;
/*以16进制形式写入文件*/
while( writelen < length)
{
if(buf[writelen] == 0)
{
fprintf( writefile, "%x", 0 );
fprintf( writefile, "%x", 0 );
}
else if (buf[writelen] < 0x10)
{
fprintf( writefile, "%x", 0 );
fprintf( writefile, "%x", buf[writelen] );
}
else
{
fprintf( writefile, "%x", buf[writelen] );

}
writelen++;

}
return SUCCESS;
}
INT32 encodehex(ULONG8 *tobuf,ULONG8 *frombuf,ULONG32 len)
{
ULONG8 *readfirst = frombuf ;
ULONG8 *readend = &frombuf[1] ;
INT8 *s;
ULONG8 y[2] ;
ULONG32 i;
for ( i = 0 ; i < len ; i++)
{
y[0] = *readfirst ;
y[1] = *readend ;
readfirst += 2 ;
readend += 2 ;
tobuf[i] = (ULONG8)strtol((INT8*)y, &s, 16);
}
return SUCCESS;
}

④ DES加密解密问题，java 和 C#

usingSystem;
usingSystem.Collections.Generic;
usingSystem.Text;
usingSystem.IO;
usingSystem.Security;
usingSystem.Security.Cryptography;
/*----------------------------------------------
*DES加密、解密类库，字符串加密结果使用BASE64编码返回，支持文件的加密和解密
*作者：三角猫/DeltaCat
*网址：

*转载务必保留此信息
*---------------------------------------------
*/
namespaceZU14
{
publicsealedclassDES
{
stringiv="1234的yzo";
stringkey="123在yzo";
///<summary>
///DES加密偏移量，必须是>=8位长的字符串
///</summary>
publicstringIV
{
get{returniv;}
set{iv=value;}
}
///<summary>
///DES加密的私钥，必须是8位长的字符串
///</summary>
publicstringKey
{
get{returnkey;}
set{key=value;}
}
///<summary>
///对字符串进行DES加密
///</summary>
///<paramname="sourceString">待加密的字符串</param>
///<returns>加密后的BASE64编码的字符串</returns>
publicstringEncrypt(stringsourceString)
{
byte[]btKey=Encoding.Default.GetBytes(key);
byte[]btIV=Encoding.Default.GetBytes(iv);
DESCryptoServiceProviderdes=newDESCryptoServiceProvider();
using(MemoryStreamms=newMemoryStream())
{
byte[]inData=Encoding.Default.GetBytes(sourceString);
try
{
using(CryptoStreamcs=newCryptoStream(ms,des.CreateEncryptor(btKey,btIV),CryptoStreamMode.Write))
{
cs.Write(inData,0,inData.Length);
cs.FlushFinalBlock();
}
returnConvert.ToBase64String(ms.ToArray());
}
catch
{
throw;
}
}
}
///<summary>
///对DES加密后的字符串进行解密
///</summary>
///<paramname="encryptedString">待解密的字符串</param>
///<returns>解密后的字符串</returns>
publicstringDecrypt(stringencryptedString)
{
byte[]btKey=Encoding.Default.GetBytes(key);
byte[]btIV=Encoding.Default.GetBytes(iv);
DESCryptoServiceProviderdes=newDESCryptoServiceProvider();
using(MemoryStreamms=newMemoryStream())
{
byte[]inData=Convert.FromBase64String(encryptedString);
try
{
using(CryptoStreamcs=newCryptoStream(ms,des.CreateDecryptor(btKey,btIV),CryptoStreamMode.Write))
{
cs.Write(inData,0,inData.Length);
cs.FlushFinalBlock();
}
returnEncoding.Default.GetString(ms.ToArray());
}
catch
{
throw;
}
}
}
///<summary>
///对文件内容进行DES加密
///</summary>
///<paramname="sourceFile">待加密的文件绝对路径</param>
///<paramname="destFile">加密后的文件保存的绝对路径</param>
publicvoidEncryptFile(stringsourceFile,stringdestFile)
{
if(!File.Exists(sourceFile))thrownewFileNotFoundException("指定的文件路径不存在！",sourceFile);
byte[]btKey=Encoding.Default.GetBytes(key);
byte[]btIV=Encoding.Default.GetBytes(iv);
DESCryptoServiceProviderdes=newDESCryptoServiceProvider();
byte[]btFile=File.ReadAllBytes(sourceFile);
using(FileStreamfs=newFileStream(destFile,FileMode.Create,FileAccess.Write))
{
try
{
using(CryptoStreamcs=newCryptoStream(fs,des.CreateEncryptor(btKey,btIV),CryptoStreamMode.Write))
{
cs.Write(btFile,0,btFile.Length);
cs.FlushFinalBlock();
}
}
catch
{
throw;
}
finally
{
fs.Close();
}
}
}
///<summary>
///对文件内容进行DES加密，加密后覆盖掉原来的文件
///</summary>
///<paramname="sourceFile">待加密的文件的绝对路径</param>
publicvoidEncryptFile(stringsourceFile)
{
EncryptFile(sourceFile,sourceFile);
}
///<summary>
///对文件内容进行DES解密
///</summary>
///<paramname="sourceFile">待解密的文件绝对路径</param>
///<paramname="destFile">解密后的文件保存的绝对路径</param>
publicvoidDecryptFile(stringsourceFile,stringdestFile)
{
if(!File.Exists(sourceFile))thrownewFileNotFoundException("指定的文件路径不存在！",sourceFile);
byte[]btKey=Encoding.Default.GetBytes(key);
byte[]btIV=Encoding.Default.GetBytes(iv);
DESCryptoServiceProviderdes=newDESCryptoServiceProvider();
byte[]btFile=File.ReadAllBytes(sourceFile);
using(FileStreamfs=newFileStream(destFile,FileMode.Create,FileAccess.Write))
{
try
{
using(CryptoStreamcs=newCryptoStream(fs,des.CreateDecryptor(btKey,btIV),CryptoStreamMode.Write))
{
cs.Write(btFile,0,btFile.Length);
cs.FlushFinalBlock();
}
}
catch
{
throw;
}
finally
{
fs.Close();
}
}
}
///<summary>
///对文件内容进行DES解密，加密后覆盖掉原来的文件
///</summary>
///<paramname="sourceFile">待解密的文件的绝对路径</param>
publicvoidDecryptFile(stringsourceFile)
{
DecryptFile(sourceFile,sourceFile);
}
}
}

⑤ DES加密算法C语言实现

#include<iostream.h>
class SubKey{ //定义子密钥为一个类
public:
int key[8][6];
}subkey[16]; //定义子密钥对象数组

class DES{
int encipher_decipher; //判断加密还是解密
int key_in[8][8]; //用户原始输入的64位二进制数
int key_out[8][7]; //除去每行的最后一位校验位
int c0_d0[8][7]; //存储经PC-1转换后的56位数据
int c0[4][7],d0[4][7]; //分别存储c0,d0
int text[8][8]; //64位明文
int text_ip[8][8]; //经IP转换过后的明文
int A[4][8],B[4][8]; //A,B分别存储经IP转换过后明文的两部分,便于交换
int temp[8][6]; //存储经扩展置换后的48位二进制值
int temp1[8][6]; //存储和子密钥异或后的结果
int s_result[8][4]; //存储经S变换后的32位值
int text_p[8][4]; //经P置换后的32位结果
int secret_ip[8][8]; //经逆IP转换后的密文
public:
void Key_Putting();
void PC_1();
int function(int,int); //异或
void SubKey_Proction();
void IP_Convert();
void f();
void _IP_Convert();
void Out_secret();
};
void DES::Key_Putting() //得到密钥中对算法有用的56位
{
cout<<"请输入64位的密钥(8行8列且每行都得有奇数个1):\n";
for(int i=0;i<8;i++)
for(int j=0;j<8;j++){
cin>>key_in[i][j];
if(j!=7) key_out[i][j]=key_in[i][j];
}
}
void DES::PC_1() //PC-1置换函数
{
int pc_1[8][7]={ //PC-1
{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, 12, 4}
};
int i,j;
for(i=0;i<8;i++)
for(j=0;j<7;j++)
c0_d0[i][j]=key_out[ (pc_1[i][j]-1)/8 ][ (pc_1[i][j]-1)%8 ];
}
int DES::function(int a,int b) //模拟二进制数的异或运算,a和b为整型的0和1,返回值为整型的0或1
{
if(a!=b)return 1;
else return 0;
}
void DES::SubKey_Proction() //生成子密钥
{
int move[16][2]={ //循环左移的位数
1 , 1 , 2 , 1 ,
3 , 2 , 4 , 2 ,
5 , 2 , 6 , 2 ,
7 , 2 , 8 , 2 ,
9 , 1, 10 , 2,
11 , 2, 12 , 2,
13 , 2, 14 , 2,
15 , 2, 16 , 1
};
int pc_2[8][6]={ //PC-2
14, 17 ,11 ,24 , 1 , 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
};
for(int i=0;i<16;i++) //生成子密钥
{
int j,k;
int a[2],b[2];
int bb[28],cc[28];
for(j=0;j<4;j++)
for(k=0;k<7;k++)
c0[j][k]=c0_d0[j][k];
for(j=4;j<8;j++)
for(k=0;k<7;k++)
d0[j-4][k]=c0_d0[j][k];
for(j=0;j<4;j++)
for(k=0;k<7;k++){
bb[7*j+k]=c0[j][k];
cc[7*j+k]=d0[j][k];
}
for(j=0;j<move[i][1];j++){
a[j]=bb[j];
b[j]=cc[j];
}
for(j=0;j<28-move[i][1];j++){
bb[j]=bb[j+1];
cc[j]=cc[j+1];
}
for(j=0;j<move[i][1];j++){
bb[27-j]=a[j];
cc[27-j]=b[j];
}
for(j=0;j<28;j++){
c0[j/7][j%7]=bb[j];
d0[j/7][j%7]=cc[j];
}
for(j=0;j<4;j++) //L123--L128是把c0,d0合并成c0_d0
for(k=0;k<7;k++)
c0_d0[j][k]=c0[j][k];
for(j=4;j<8;j++)
for(k=0;k<7;k++)
c0_d0[j][k]=d0[j-4][k];
for(j=0;j<8;j++) //对Ci,Di进行PC-2置换
for(k=0;k<6;k++)
subkey[i].key[j][k]=c0_d0[ (pc_2[j][k]-1)/7 ][ (pc_2[j][k]-1)%7 ];
}
}
void DES::IP_Convert()
{
int IP[8][8]={ //初始置换IP矩阵
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
};
cout<<"你好,你要加密还是解密?加密请按1号键(输入1),解密请按2号键,并确定."<<'\n';
cin>>encipher_decipher;
char * s;
if(encipher_decipher==1) s="明文";
else s="密文";
cout<<"请输入64位"<<s<<"(二进制):\n";
int i,j;
for(i=0;i<8;i++)
for(j=0;j<8;j++)
cin>>text[i][j];
for(i=0;i<8;i++) //进行IP变换
for(j=0;j<8;j++)
text_ip[i][j]=text[ (IP[i][j]-1)/8 ][ (IP[i][j]-1)%8 ];
}

⑥ 用c语言写des加密算法

#include <stdio.h> #include <string.h> #include <windows.h> #include <conio.h> #include "Schedle.h" class CShift{ public: DWORDLONG mask[16]; int step[16]; CShift(){ for(int i=0;i<16;i++){ step[i]=2; mask[i]=0xc000000; } step[0]=step[1]=step[8]=step[15]=1; mask[0]=mask[1]=mask[8]=mask[15]=0x8000000; } }; class CDES{ public: CDES(){ m_dwlKey=0; m_dwlData=0; ConvertTableToMask(dwlKey_PC_1,64); //PrintTable(dwlKey_PC_1,7,8); ConvertTableToMask(dwlKey_PC_2,56); ConvertTableToMask(dwlData_IP,64); ConvertTableToMask(dwlData_Expansion,32); ConvertTableToMask(dwlData_FP,64); ConvertTableToMask(dwlData_P,32); Generate_S(); } void PrintBit(DWORDLONG); void EncryptKey(char *); unsigned char* EncryptData(unsigned char *); unsigned char* DescryptData(unsigned char*); private: void ConvertTableToMask(DWORDLONG *,int); void Generate_S(void); void PrintTable(DWORDLONG*,int,int); DWORDLONG ProcessByte(unsigned char*,BOOL); DWORDLONG PermuteTable(DWORDLONG,DWORDLONG*,int); void Generate_K(void); void EncryptKernel(void); DWORDLONG Generate_B(DWORDLONG,DWORDLONG*); /*For verify schele permutation only*/ DWORDLONG UnPermuteTable(DWORDLONG,DWORDLONG*,int); /**************************************/ DWORDLONG dwlData_S[9][4][16]; CShift m_shift; DWORDLONG m_dwlKey; DWORDLONG m_dwlData; DWORDLONG m_dwl_K[17]; }; void CDES::EncryptKey(char *key){ printf("\nOriginal Key: %s",key); m_dwlKey=ProcessByte((unsigned char*)key,TRUE); // PrintBit(m_dwlKey); m_dwlKey=PermuteTable(m_dwlKey,dwlKey_PC_1,56); // PrintBit(m_dwlKey); Generate_K(); // printf("\n******************************************\n"); } void CDES::Generate_K(void){ DWORDLONG C[17],D[17],tmp; C[0]=m_dwlKey>>28; D[0]=m_dwlKey&0xfffffff; for(int i=1;i<=16;i++){ tmp=(C[i-1]&m_shift.mask[i-1])>>(28-m_shift.step[i-1]); C[i]=((C[i-1]<<m_shift.step[i-1])|tmp)&0x0fffffff; tmp=(D[i-1]&m_shift.mask[i-1])>>(28-m_shift.step[i-1]); D[i]=((D[i-1]<<m_shift.step[i-1])|tmp)&0x0fffffff; m_dwl_K[i]=(C[i]<<28)|D[i]; m_dwl_K[i]=PermuteTable(m_dwl_K[i],dwlKey_PC_2,48); } } DWORDLONG CDES::ProcessByte(unsigned char *key,BOOL shift){ unsigned char tmp; DWORDLONG byte=0; int i=0; while(i<8){ while(*key){ if(byte!=0) byte<<=8; tmp=*key; if(shift) tmp<<=1; byte|=tmp; i++; key++; } if(i<8) byte<<=8; i++; } return byte; } DWORDLONG CDES::PermuteTable(DWORDLONG dwlPara,DWOR 基于des算法的rfid安全系统
DLONG* dwlTable,int nDestLen){ int i=0; DWORDLONG tmp=0,moveBit; while(i<nDestLen){ moveBit=1; if(dwlTable[i]&dwlPara){ moveBit<<=nDestLen-i-1; tmp|=moveBit; } i++; } return tmp; } DWORDLONG CDES::UnPermuteTable(DWORDLONG dwlPara,DWORDLONG* dwlTable,int nDestLen){ DWORDLONG tmp=0; int i=nDestLen-1; while(dwlPara!=0){ if(dwlPara&0x01) tmp|=dwlTable[i]; dwlPara>>=1; i--; } return tmp; } void CDES::PrintTable(DWORDLONG *dwlPara,int col,int row){ int i,j; for(i=0;i<row;i++){ printf("\n"); getch(); for(j=0;j<col;j++) PrintBit(dwlPara[i*col+j]); } } void CDES::PrintBit(DWORDLONG bitstream){ char out[76]; int i=0,j=0,space=0; while(bitstream!=0){ if(bitstream&0x01) out[i++]='1'; else out[i++]='0'; j++; if(j%8==0){ out[i++]=' '; space++; } bitstream=bitstream>>1; } out[i]='\0'; strcpy(out,strrev(out)); printf("%s **:%d\n",out,i-space); } void CDES::ConvertTableToMask(DWORDLONG *mask,int max){ int i=0; DWORDLONG nBit=1; while(mask[i]!=0){ nBit=1; nBit<<=max-mask[i]; mask[i++]=nBit; } } void CDES::Generate_S(void){ int i; int j,m,n; m=n=0; j=1; for(i=0;i<512;i++){ dwlData_S[j][m][n]=OS[i]; n=(n+1)%16; if(!n){ m=(m+1)%4; if(!m) j++; } } } unsigned char * CDES::EncryptData(unsigned char *block){ unsigned char *EncrytedData=new unsigned char(15); printf("\nOriginal Data: %s\n",block); m_dwlData=ProcessByte(block,0); // PrintBit(m_dwlData); m_dwlData=PermuteTable(m_dwlData,dwlData_IP,64); EncryptKernel(); // PrintBit(m_dwlData); DWORDLONG bit6=m_dwlData; for(int i=0;i<11;i++){ EncrytedData[7-i]=(unsigned char)(bit6&0x3f)+46; bit6>>=6; } EncrytedData[11]='\0'; printf("\nAfter Encrypted: %s",EncrytedData); for(i=0;i<8;i++){ EncrytedData[7-i]=(unsigned char)(m_dwlData&0xff); m_dwlData>>=8; } EncrytedData[8]='\0'; return EncrytedData; } void CDES::EncryptKernel(void){ int i=1; DWORDLONG L[17],R[17],B[9],EK,PSB; L[0]=m_dwlData>>32; R[0]=m_dwlData&0xffffffff; for(i=1;i<=16;i++){ L[i]=R[i-1]; R[i-1]=PermuteTable(R[i-1],dwlData_Expansion,48); //Expansion R EK=R[i-1]^m_dwl_K[i]; //E Permutation PSB=Generate_B(EK,B); //P Permutation R[i]=L[i-1]^PSB; } R[16]<<=32; m_dwlData=R[16]|L[16]; m_dwlData=PermuteTable(m_dwlData,dwlData_FP,64); } unsigned char* CDES::DescryptData(unsigned char *desData){ int i=1; unsigned char *DescryptedData=new unsigned char(15); DWORDLONG L[17],R[17],B[9],EK,PSB; DWORDLONG dataPara; dataPara=ProcessByte(desData,0); dataPara=PermuteTable(dataPara,dwlData_IP,64); R[16]=dataPara>>32; L[16]=dataPara&0xffffffff; for(i=16;i>=1;i--){ R[i-1]=L[i]; L[i]=PermuteTable(L[i],dwlData_Expansion,48); //Expansion L EK=L[i]^m_dwl_K[i]; //E Permutation PSB=Generate_B(EK,B); //P Permutation L[i-1]=R[i]^PSB; } L[0]<<=32; dataPara=L[0]|R[0]; dataPara=PermuteTable(dataPara,dwlData_FP,64); // PrintBit(dataPara); for(i=0;i<8;i++){ DescryptedData[7-i]=(unsigned char)(dataPara&0xff); dataPara>>=8; } DescryptedData[8]='\0'; printf("\nAfter Decrypted: %s\n",DescryptedData); return DescryptedData; } DWORDLONG CDES::Generate_B(DWORDLONG EKPara,DWORDLONG *block){ int i,m,n; DWORDLONG tmp=0; for(i=8;i>0;i--){ block[i]=EKPara&0x3f; m=(int)(block[i]&0x20)>>4; m|=block[i]&0x01; n=(int)(block[i]<<1)>>2; block[i]=dwlData_S[i][m][n]; EKPara>>=6; } for(i=1;i<=8;i++){ tmp|=block[i]; tmp<<=4; } tmp>>=4; tmp=PermuteTable(tmp,dwlData_P,32); return tmp; } void main(void){ CDES des; des.EncryptKey("12345678"); unsigned char *result=des.EncryptData((unsigned char*)"DemoData"); des.DescryptData(result); }[1]

⑦ c#的这段des加密，用C怎么才能实现

C#中的des加密，最重要的就是DESCryptoServiceProvider
真正的加密，微软已经做好了。我们要做的就是塞进去，拿出来。
如果C中有类似的类，就可以操作，否则就要把整个算法重做了。
还有一种作法是，用C#包装一个dll，让C调用，不过这样子的结果就是最后也要.net支撑。

⑧ 求一个用c语言写的DES加密算法~~

using system;
using system.security.cryptography;
using system.io;
using system.text;

public class encryptstringdes {

public static void main(string);
return;
}

// 使用utf8函数加密输入参数
utf8encoding utf8encoding = new utf8encoding();
byte.tochararray());

// 方式一：调用默认的des实现方法des_csp.
des des = des.create();
// 方式二：直接使用des_csp()实现des的实体
//des_csp des = new des_csp();

// 初始化des加密的密钥和一个随机的、8比特的初始化向量(iv)
byte iv = {0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef};
des.key = key;
des.iv = iv;

// 建立加密流
symmetricstreamencryptor sse = des.createencryptor();

// 使用cryptomemorystream方法获取加密过程的输出
cryptomemorystream cms = new cryptomemorystream();

// 将symmetricstreamencryptor流中的加密数据输出到cryptomemorystream中
sse.setsink(cms);

// 加密完毕，将结果输出到控制台
sse.write(inputbytearray);
sse.closestream();

// 获取加密数据
byte);
}
console.writeline();

//上面演示了如何进行加密，下面演示如何进行解密
symmetricstreamdecryptor ssd = des.createdecryptor();
cms = new cryptomemorystream();
ssd.setsink(cms);
ssd.write(encrypteddata);
ssd.closestream();

byte decryptedchararray = utf8encoding.getchars(decrypteddata);
console.writeline("解密后数据：");
console.write(decryptedchararray);
console.writeline();
}
}

编译：

d:\csharp>csc des_demo.cs
microsoft (r) c# compiler version 7.00.8905
right (c) microsoft corp 2000. all rights reserved.

运行实例：
d:\csharp>des_demo.exe 使用c#编写des加密程序的framework

加密结果：
3d 22 64 c6 57 d1 c4 c3 cf 77 ce 2f d0 e1 78 2a 4d ed 7a a8 83 f9 0e 14 e1 ba 38
7b 06 41 8d b5 e9 3f 00 0d c3 28 d1 f9 6d 17 4b 6e a7 41 68 40

⑨ des加密算法(c/c++)

des.h文件：

#ifndefCRYPTOPP_DES_H

#defineCRYPTOPP_DES_H

#include"cryptlib.h"

#include"misc.h"

NAMESPACE_BEGIN(CryptoPP)

classDES:publicBlockTransformation

{

public:

DES(constbyte*userKey,CipherDir);

voidProcessBlock(constbyte*inBlock,byte*outBlock)const;

voidProcessBlock(byte*inoutBlock)const

{DES::ProcessBlock(inoutBlock,inoutBlock);}

enum{KEYLENGTH=8,BLOCKSIZE=8};

unsignedintBlockSize()const{returnBLOCKSIZE;}

protected:

staticconstword32Spbox[8][64];

SecBlock<word32>k;

};

classDESEncryption:publicDES

{

public:

DESEncryption(constbyte*userKey)

:DES(userKey,ENCRYPTION){}

};

classDESDecryption:publicDES

{

public:

DESDecryption(constbyte*userKey)

:DES(userKey,DECRYPTION){}

};

classDES_EDE_Encryption:publicBlockTransformation

{

public:

DES_EDE_Encryption(constbyte*userKey)

:e(userKey,ENCRYPTION),d(userKey+DES::KEYLENGTH,DECRYPTION){}

voidProcessBlock(constbyte*inBlock,byte*outBlock)const;

voidProcessBlock(byte*inoutBlock)const;

enum{KEYLENGTH=16,BLOCKSIZE=8};

unsignedintBlockSize()const{returnBLOCKSIZE;}

private:

DESe,d;

};

classDES_EDE_Decryption:publicBlockTransformation

{

public:

DES_EDE_Decryption(constbyte*userKey)

:d(userKey,DECRYPTION),e(userKey+DES::KEYLENGTH,ENCRYPTION){}

voidProcessBlock(constbyte*inBlock,byte*outBlock)const;

voidProcessBlock(byte*inoutBlock)const;

enum{KEYLENGTH=16,BLOCKSIZE=8};

unsignedintBlockSize()const{returnBLOCKSIZE;}

private:

DESd,e;

};

classTripleDES_Encryption:publicBlockTransformation

{

public:

TripleDES_Encryption(constbyte*userKey)

:e1(userKey,ENCRYPTION),d(userKey+DES::KEYLENGTH,DECRYPTION),

e2(userKey+2*DES::KEYLENGTH,ENCRYPTION){}

voidProcessBlock(constbyte*inBlock,byte*outBlock)const;

voidProcessBlock(byte*inoutBlock)const;

enum{KEYLENGTH=24,BLOCKSIZE=8};

unsignedintBlockSize()const{returnBLOCKSIZE;}

private:

DESe1,d,e2;

};

classTripleDES_Decryption:publicBlockTransformation

{

public:

TripleDES_Decryption(constbyte*userKey)

:d1(userKey+2*DES::KEYLENGTH,DECRYPTION),e(userKey+DES::KEYLENGTH,ENCRYPTION),

d2(userKey,DECRYPTION){}

voidProcessBlock(constbyte*inBlock,byte*outBlock)const;

voidProcessBlock(byte*inoutBlock)const;

enum{KEYLENGTH=24,BLOCKSIZE=8};

unsignedintBlockSize()const{returnBLOCKSIZE;}

private:

DESd1,e,d2;

};

NAMESPACE_END

#endif

des.cpp文件：

//des.cpp-modifiedbyWeiDaifrom:

/*

*

*circa1987,'s1977

*publicdomaincode.,but

*theactualencrypt/

*Outerbridge'sDEScodeasprintedinSchneier's"AppliedCryptography."

*

*Thiscodeisinthepublicdomain.Iwouldappreciatebugreportsand

*enhancements.

*

*PhilKarnKA9Q,[email protected],August1994.

*/

#include"pch.h"

#include"misc.h"

#include"des.h"

NAMESPACE_BEGIN(CryptoPP)

/*

*Threeofthesetables,theinitialpermutation,thefinal

*,areregularenoughthat

*forspeed,wehard-codethem.They'rehereforreferenceonly.

*Also,,gensp.c,

*tobuildthecombinedSPbox,Spbox[].They'realsoherejust

*forreference.

*/

#ifdefnotdef

/*initialpermutationIP*/

staticbyteip[]={

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

};

/*finalpermutationIP^-1*/

staticbytefp[]={

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

};

/*expansionoperationmatrix*/

staticbyteei[]={

32,1,2,3,4,5,

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

};

/*The(in)famousS-boxes*/

staticbytesbox[8][64]={

/*S1*/

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,

/*S2*/

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,

/*S3*/

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,

/*S4*/

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,

/*S5*/

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,

/*S6*/

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,

/*S7*/

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,

/*S8*/

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

};

/*32--boxes*/

staticbytep32i[]={

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

};

#endif

/*permutedchoicetable(key)*/

staticconstbytepc1[]={

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,

21,13,5,28,20,12,4

};

/*numberleftrotationsofpc1*/

staticconstbytetotrot[]={

1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28

};

/*permutedchoicekey(table)*/

staticconstbytepc2[]={

14,17,11,24,1,5,

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

};

/*EndofDES-definedtables*/

/*bit0isleft-mostinbyte*/

staticconstintbytebit[]={

0200,0100,040,020,010,04,02,01

};

/*Setkey(initializekeyschelearray)*/

DES::DES(constbyte*key,CipherDirdir)

:k(32)

{

SecByteBlockbuffer(56+56+8);

byte*constpc1m=buffer;/*placetomodifypc1into*/

byte*constpcr=pc1m+56;/*placetorotatepc1into*/

byte*constks=pcr+56;

registerinti,j,l;

intm;

for(j=0;j<56;j++){/*convertpc1tobitsofkey*/

l=pc1[j]-1;/*integerbitlocation*/

m=l&07;/*findbit*/

pc1m[j]=(key[l>>3]&/*findwhichkeybytelisin*/

bytebit[m])/*andwhichbitofthatbyte*/

?1:0;/*andstore1-bitresult*/

}

for(i=0;i<16;i++){/*keychunkforeachiteration*/

memset(ks,0,8);/*Clearkeyschele*/

for(j=0;j<56;j++)/*rotatepc1therightamount*/

pcr[j]=pc1m[(l=j+totrot[i])<(j<28?28:56)?l:l-28];

/**/

for(j=0;j<48;j++){/*selectbitsindivially*/

/*checkbitthatgoestoks[j]*/

if(pcr[pc2[j]-1]){

/*maskitinifit'sthere*/

l=j%6;

ks[j/6]|=bytebit[l]>>2;

}

}

/*Nowconverttoodd/eveninterleavedformforuseinF*/

k[2*i]=((word32)ks[0]<<24)

|((word32)ks[2]<<16)

|((word32)ks[4]<<8)

|((word32)ks[6]);

k[2*i+1]=((word32)ks[1]<<24)

|((word32)ks[3]<<16)

|((word32)ks[5]<<8)

|((word32)ks[7]);

}

if(dir==DECRYPTION)//reversekeyscheleorder

for(i=0;i<16;i+=2)

{

std::swap(k[i],k[32-2-i]);

std::swap(k[i+1],k[32-1-i]);

}

}

/**/

/*Ccodeonlyinportableversion*/

//RichardOuterbridge'sinitialpermutationalgorithm

/*

inlinevoidIPERM(word32&left,word32&right)

{

word32work;

work=((left>>4)^right)&0x0f0f0f0f;

right^=work;

left^=work<<4;

work=((left>>16)^right)&0xffff;

right^=work;

left^=work<<16;

work=((right>>2)^left)&0x33333333;

left^=work;

right^=(work<<2);

work=((right>>8)^left)&0xff00ff;

left^=work;

right^=(work<<8);

right=rotl(right,1);

work=(left^right)&0xaaaaaaaa;

left^=work;

right^=work;

left=rotl(left,1);

}

inlinevoidFPERM(word32&left,word32&right)

{

word32work;

right=rotr(right,1);

work=(left^right)&0xaaaaaaaa;

left^=work;

right^=work;

left=rotr(left,1);

work=((left>>8)^right)&0xff00ff;

right^=work;

left^=work<<8;

work=((left>>2)^right)&0x33333333;

right^=work;

left^=work<<2;

work=((right>>16)^left)&0xffff;

left^=work;

right^=work<<16;

work=((right>>4)^left)&0x0f0f0f0f;

left^=work;

right^=work<<4;

}

*/

//WeiDai''sinitialpermutation

//algorithm,

//(likeinMSVC)

inlinevoidIPERM(word32&left,word32&right)

{

word32work;

right=rotl(right,4U);

work=(left^right)&0xf0f0f0f0;

left^=work;

right=rotr(right^work,20U);

work=(left^right)&0xffff0000;

left^=work;

right=rotr(right^work,18U);

work=(left^right)&0x33333333;

left^=work;

right=rotr(right^work,6U);

work=(left^right)&0x00ff00ff;

left^=work;

right=rotl(right^work,9U);

work=(left^right)&0xaaaaaaaa;

left=rotl(left^work,1U);

right^=work;

}

inlinevoidFPERM(word32&left,word32&right)

{

word32work;

right=rotr(right,1U);

work=(left^right)&0xaaaaaaaa;

right^=work;

left=rotr(left^work,9U);

work=(left^right)&0x00ff00ff;

right^=work;

left=rotl(left^work,6U);

work=(left^right)&0x33333333;

right^=work;

left=rotl(left^work,18U);

work=(left^right)&0xffff0000;

right^=work;

left=rotl(left^work,20U);

work=(left^right)&0xf0f0f0f0;

right^=work;

left=rotr(left^work,4U);

}

//

voidDES::ProcessBlock(constbyte*inBlock,byte*outBlock)const

{

word32l,r,work;

#ifdefIS_LITTLE_ENDIAN

l=byteReverse(*(word32*)inBlock);

r=byteReverse(*(word32*)(inBlock+4));

#else

l=*(word32*)inBlock;

r=*(word32*)(inBlock+4);

#endif

IPERM(l,r);

constword32*kptr=k;

for(unsignedi=0;i<8;i++)

{

work=rotr(r,4U)^kptr[4*i+0];

l^=Spbox[6][(work)&0x3f]

^Spbox[4][(work>>8)&0x3f]

^Spbox[2][(work>>16)&0x3f]

^Spbox[0][(work>>24)&0x3f];

work=r^kptr[4*i+1];

l^=Spbox[7][(work)&0x3f]

^Spbox[5][(work>>8)&0x3f]

^Spbox[3][(work>>16)&0x3f]

^Spbox[1][(work>>24)&0x3f];

work=rotr(l,4U)^kptr[4*i+2];

r^=Spbox[6][(work)&0x3f]

^Spbox[4][(work>>8)&0x3f]

^Spbox[2][(work>>16)&0x3f]

^Spbox[0][(work>>24)&0x3f];

work=l^kptr[4*i+3];

r^=Spbox[7][(work)&0x3f]

^Spbox[5][(work>>8)&0x3f]

^Spbox[3][(work>>16)&0x3f]

^Spbox[1][(work>>24)&0x3f];

}

FPERM(l,r);

#ifdefIS_LITTLE_ENDIAN

*(word32*)outBlock=byteReverse(r);

*(word32*)(outBlock+4)=byteReverse(l);

#else

*(word32*)outBlock=r;

*(word32*)(outBlock+4)=l;

#endif

}

voidDES_EDE_Encryption::ProcessBlock(byte*inoutBlock)const

{

e.ProcessBlock(inoutBlock);

d.ProcessBlock(inoutBlock);

e.ProcessBlock(inoutBlock);

}

voidDES_EDE_Encryption::ProcessBlock(constbyte*inBlock,byte*outBlock)const

{

e.ProcessBlock(inBlock,outBlock);

d.ProcessBlock(outBlock);

e.ProcessBlock(outBlock);

}

voidDES_EDE_Decryption::ProcessBlock(byte*inoutBlock)const

{

d.ProcessBlock(inoutBlock);

e.ProcessBlock(inoutBlock);

d.ProcessBlock(inoutBlock);

}

voidDES_EDE_Decryption::ProcessBlock(constbyte*inBlock,byte*outBlock)const

{

d.ProcessBlock(inBlock,outBlock);

e.ProcessBlock(outBlock);

d.ProcessBlock(outBlock);

}

voidTripleDES_Encryption::ProcessBlock(byte*inoutBlock)const

{

e1.ProcessBlock(inoutBlock);

d.ProcessBlock(inoutBlock);

e2.ProcessBlock(inoutBlock);

}

voidTripleDES_Encryption::ProcessBlock(constbyte*inBlock,byte*outBlock)const

{

e1.ProcessBlock(inBlock,outBlock);

d.ProcessBlock(outBlock);

e2.ProcessBlock(outBlock);

}

voidTripleDES_Decryption::ProcessBlock(byte*inoutBlock)const

{

d1.ProcessBlock(inoutBlock);

e.ProcessBlock(inoutBlock);

d2.ProcessBlock(inoutBlock);

}

voidTripleDES_Decryption::ProcessBlock(constbyte*inBlock,byte*outBlock)const

{

d1.ProcessBlock(inBlock,outBlock);

e.ProcessBlock(outBlock);

d2.ProcessBlock(outBlock);

}

NAMESPACE_END

程序运行如下：