#include <memory.h>
#include <windows.h>
#include <string>
#include <stdio.h>
#include<fstream>
#include<sstream>
#include<iostream>
#define final_encode_key "eff46aae1w8u59dba1192439"
#define final_encode_iv "2fd150c2"
using namespace std;
enum
{
encode = 0, //加密
decode = 1 //解密
};
typedef bool (*allkey)[16][48];
const char IP_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
};
// final permutation IP^-1
const char IPR_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
};
// expansion operation matrix
const char E_Table[48] = {
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
};
// 32-bit permutation function P used on the output of the S-boxes
const char P_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
};
const char pc_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, 12, 4
};
const char pc_2[48] = {
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
};
const char loop[16] = {
1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1
};
const char S[8][4][16] = {
// 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
};
void ByteToBit(bool *Out, const char *In, int bits)
{
for(int i=0; i<bits; ++i)
Out[i] = (In[i>>3]>>(7 - i&7)) & 1;
}
void BitToByte(char *Out, const bool *In, int bits)
{
memset(Out, 0, bits>>3);
for(int i=0; i<bits; ++i)
Out[i>>3] |= In[i]<<(7 - i&7);
}
void RotateL(bool *In, int len, int loop)
{
bool Tmp[256];
memcpy(Tmp, In, loop);
memcpy(In, In+loop, len-loop);
memcpy(In+len-loop, Tmp, loop);
}
void Xor(bool *InA, const bool *InB, int len)
{
for(int i=0; i<len; ++i)
InA[i] ^= InB[i];
}
void Transform(bool *Out, bool *In, const char *Table, int len)
{
bool Tmp[256];
for(int i=0; i<len; ++i)
Tmp[i] = In[ Table[i]-1 ];
memcpy(Out, Tmp, len);
}
void S_func(bool Out[32], const bool In[48])
{
for(char i=0,j,k; i<8; ++i,In+=6,Out+=4)
{
j = (In[0]<<1) + In[5];
k = (In[1]<<3) + (In[2]<<2) + (In[3]<<1) + In[4]; //组织SID下标
for(int l=0; l<4; ++l) //把相应4bit赋值
Out[l] = (S[i][j][k]>>(3 - l)) & 1;
}
}
void F_func(bool In[32], const bool Ki[48])
{
bool MR[48];
Transform(MR, In, E_Table, 48);
Xor(MR, Ki, 48);
S_func(In, MR);
Transform(In, In, P_Table, 32);
}
void SetSubKey(allkey allkey, const char Key[8])
{
bool K[64], *KL=&K[0], *KR=&K[28];
ByteToBit(K, Key, 64);
Transform(K, K, pc_1, 56);
for(int i=0; i<16; ++i) {
RotateL(KL, 28, loop[i]);
RotateL(KR, 28, loop[i]);
Transform((*allkey)[i], K, pc_2, 48);
}
}
void DES(char Out[8], char In[8], const allkey allkey, bool Type)
{
bool M[64], tmp[32], *Li=&M[0], *Ri=&M[32];
ByteToBit(M, In, 64);
Transform(M, M, IP_Table, 64);
if( Type == encode )
{
for(int i=0; i<16; ++i)
{
memcpy(tmp, Ri, 32); //Ri[i-1] 保存
F_func(Ri, (*allkey)[i]); //Ri[i-1]经过转化和SBox输出为P
Xor(Ri, Li, 32); //Ri[i] = P XOR Li[i-1]
memcpy(Li, tmp, 32); //Li[i] = Ri[i-1]
}
}
else
{
for(int i=15; i>=0; --i)
{
memcpy(tmp, Ri, 32); //Ri[i-1] 保存
F_func(Ri, (*allkey)[i]); //Ri[i-1]经过转化和SBox输出为P
Xor(Ri, Li, 32); //Ri[i] = P XOR Li[i-1]
memcpy(Li, tmp, 32); //Li[i] = Ri[i-1]
}
}
RotateL(M,64,32); //Ri与Li换位重组M
Transform(M, M, IPR_Table, 64); //最后结果进行转化
BitToByte(Out, M, 64); //组织成字符
}
bool DesEncry(bool bType,char* In,char* Out,unsigned datalen,const char* Key,const unsigned char keylen, const char* Iv)
{
//判断输入合法性
if(!(In && Out && Key && datalen && keylen>=8))
return false;
//只处理8的整数倍，不足长度自己填充
if(datalen & 0x00000007)
return false;
bool m_SubKey[3][16][48]; //秘钥
//构造并生成SubKeys
unsigned char nKey = (keylen>>3)>3 ? 3: (keylen>>3);
for(int i=0;i<nKey;i++)
{
SetSubKey(&m_SubKey[i],&Key[i<<3]);
}
char cvec[9] = {0}; //扭转向量
strcpy(cvec,Iv);
char cvin[9] = {0}; //中间变量
//3DES CBC 3Key
for(int i=0,j=datalen>>3;i<j;++i,Out+=8,In+=8)
{
if(bType == encode)
{
for(int j=0;j<8;++j) //将输入与扭转变量异或
{
cvin[j] = In[j] ^ cvec[j];
}
}
else
{
memcpy(cvin,In,8);
}
DES(Out,cvin,&m_SubKey[bType ? 2 : 0],bType);
DES(Out,Out,&m_SubKey[1],!bType);
DES(Out,Out,&m_SubKey[bType ? 0 : 2],bType);
if(bType == encode)
{
memcpy(cvec,Out,8); //将输出设定为扭转变量
}
else
{
for(int j=0;j<8;++j) //将输出与扭转变量异或
{
Out[j] = Out[j] ^ cvec[j];
}
memcpy(cvec,cvin,8); //将输入设定为扭转变量
}
}
return true;
}
bool GetPadding(const char* In,unsigned datalen,char* Out,unsigned& padlen)
{
int res = (datalen & 0x00000007);
if(padlen< (datalen+8-res))
{
return false;
}
else
{
padlen = (datalen+8-res);
memcpy(Out,In,datalen);
}
memset(Out+datalen,0x80,1);
memset(Out+datalen,0x00,7-res);
return true;
}
//计算并填充子密钥到SubKey数据中
//DES单元运算
void Char2Hex(unsigned char ch, char* szHex)
{
unsigned char byte[2];
byte[0] = ch/16;
byte[1] = ch%16;
for(int i=0; i<2; i++)
{
if(byte[i] >= 0 && byte[i] <= 9)
szHex[i] = '0' + byte[i];
else
szHex[i] = 'A' + byte[i] - 10;
}
szHex[2] = 0;
}
void Hex2Char(char const* szHex, unsigned char& rch)
{
rch = 0;
for(int i=0; i<2; i++)
{
if(*(szHex + i) >='0' && *(szHex + i) <= '9')
rch = (rch << 4) + (*(szHex + i) - '0');
else if(*(szHex + i) >='A' && *(szHex + i) <= 'F')
rch = (rch << 4) + (*(szHex + i) - 'A' + 10);
else
break;
}
}
void CharStr2HexStr(unsigned char const* pucCharStr, char* pszHexStr, int iSize)
{
int i;
char szHex[3];
pszHexStr[0] = 0;
for(i=0; i<iSize; i++)
{
Char2Hex(pucCharStr[i], szHex);
strcat(pszHexStr, szHex);
}
}
void HexStr2CharStr(char const* pszHexStr, unsigned char* pucCharStr, int iSize)
{
int i;
unsigned char ch;
for(i=0; i<iSize; i++)
{
Hex2Char(pszHexStr+2*i, ch);
pucCharStr[i] = ch;
}
}
string final_encode(string Data)
{
char sIn[1024] = {0};
char sInPad[1024] = {0};
char sOut[1024] = {0};
char sPOut[1024] = {0};
char sKey[25] = {0};
char sIv[9] = {0};
unsigned iInPad = 512;
strcpy(sKey,final_encode_key);
strcpy(sIv,final_encode_iv);
GetPadding(Data.c_str(),Data.length(),sInPad,iInPad);
DesEncry(encode,sInPad,sOut,iInPad,sKey,strlen(sKey),sIv);
CharStr2HexStr((const unsigned char*)sOut,sPOut,iInPad);
return sPOut;
}
string final_decode(string Data)
{
char sOut[1024] = {0};
unsigned char sPin[1024] = {0};
char sKey[25] = {0};
char sIv[9] = {0};
unsigned iInPad = Data.length()/2;
strcpy(sKey,final_encode_key);
strcpy(sIv,final_encode_iv);
HexStr2CharStr(Data.c_str(),sPin,iInPad);
DesEncry(decode,(char *)sPin,sOut,iInPad,sKey,strlen(sKey),sIv);
string temp_result =sOut;
temp_result = temp_result.substr(0,temp_result.length()-int(temp_result[temp_result.length()-1]));
return temp_result;
}
int main(){
string file;
ifstream input;
input.open("./test.cpp");
stringstream input1;
input1<<input.rdbuf();
input.close();
file=input1.str();
cout<<final_encode(file)<<endl;
cout<<final_decode("825501E8726FF5F2");
}参考了网上部分代码，但是基本没有可以直接用的，我传的自己改改可以直接用