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//---------------------------------------------------------------------------
//
//计算并填充子密钥到SubKey数据中
//
//---------------------------------------------------------------------------
void SetSubKey(PSubKey pSubKey, const char Key[8])
{
char K[64], *KL=&K[0], *KR=&K[28];
int i=0;
ByteToBit(K, Key, 64);
Transform(K, K, PC1_Table, 56);
for (i=0; i<16; ++i)
{
RotateL(KL, 28, LOOP_Table[i]);
RotateL(KR, 28, LOOP_Table[i]);
Transform((*pSubKey)[i], K, PC2_Table, 48);
}
}
//---------------------------------------------------------------------------
//
// Des单元运算
//
//---------------------------------------------------------------------------
void BasicDes(char Out[8], char In[8], const PSubKey pSubKey, char Type)
{
char M[64], tmp[32], *Li=&M[0], *Ri=&M[32];
int i=0;
ByteToBit(M, In, 64);
Transform(M, M, IP_Table, 64);
if (Type == ENCRYPT )
{
for (i=0; i<16; ++i)
{
memcpy(tmp, Ri, 32); //Ri[i-1] 保存
F_func(Ri, (*pSubKey)[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 (i=15; i>=0; --i)
{
memcpy(tmp, Ri, 32); //Ri[i-1] 保存
F_func(Ri, (*pSubKey)[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
}
//---------------------------------------------------------------------------
//
// End file
//
//---------------------------------------------------------------------------
以上楼层发的是C++的DES算法,求C++高手帮忙生成DLL文件,我要在C#中调用这个DLL文件,本人C++不太好,呵呵,求C++高手帮忙
//---------------------------------------------------------------------------
//
// 函 数 名 称: S_func
// 功 能 描 述: 实现数据加密S BOX模块
// 参 数 说 明: Out: 输出的32Bit[out]
// In: 输入的48Bit[in]
//
// 返回值 说明: void
//
//---------------------------------------------------------------------------
static void S_func(char Out[32], char In[48])
{
char i=0;
char j=0;
char k=0;
int l=0;
for(i=0; 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(l=0; l<4; ++l) //把相应4bit赋值
Out[l] = (S_Box[i][j][k]>>(3 - l)) & 1;
}
}
//---------------------------------------------------------------------------
//
// 函 数 名 称: F_func
// 功 能 描 述: 实现数据加密到输出P
// 参 数 说 明: Out: 输出的32Bit[out]
// In: 输入的48Bit[in]
//
// 返回值 说明: void
//
//---------------------------------------------------------------------------
static void F_func(char In[32], const char Ki[48])
{
char MR[48];
Transform(MR, In, E_Table, 48);
Xor(MR, Ki, 48);
S_func(In, MR);
Transform(In, In, P_Table, 32);
}
//---------------------------------------------------------------------------
//
//
// 函 数 名 称: RunDes
// 功 能 描 述: 执行DES算法对文本加解密
// 参 数 说 明: bType :类型:加密ENCRYPT,解密DECRYPT
// bMode :模式:ECB,CBC
// In :待加密串指针
// Out :待输出串指针
// datalen :待加密串的长度,同时Out的缓冲区大小应大于或者等于datalen
// Key :密钥(可为8位,16位,24位)支持3密钥
// keylen :密钥长度,多出24位部分将被自动裁减
//
// 返回值 说明: bool :是否加密成功
//
//---------------------------------------------------------------------------
char RunDes(char bType,char bMode,char* In,char* Out,unsigned datalen,const char* Key,const unsigned char keylen)
{
char m_SubKey[3][16][48]; //秘钥
int i=0;
int j=0;
unsigned char nKey=0;
//判断输入合法性
if(!(In && Out && Key && datalen && keylen>=8)) return 0;
//只处理8的整数倍,不足长度自己填充
if(datalen & 0x00000007) return 0;
//构造并生成SubKeys
nKey = (keylen>>3)>3 ? 3: (keylen>>3);
for (i=0;i<nKey;i++)
{
SetSubKey(&m_SubKey[i],&Key[i<<3]);
}
if (bMode == ECB) //ECB模式
{
if (nKey == 1) //单Key
{
for(i=0,j=datalen>>3;i<j;++i,Out+=8,In+=8)
{
BasicDes(Out,In,&m_SubKey[0],bType);
}
}
else
if(nKey == 2) //3DES 2Key
{
for(i=0,j=datalen>>3;i<j;++i,Out+=8,In+=8)
{
BasicDes(Out,In,&m_SubKey[0],bType);
BasicDes(Out,Out,&m_SubKey[1],!bType);
BasicDes(Out,Out,&m_SubKey[0],bType);
}
}
else //3DES 3Key
{
for(i=0,j=datalen>>3;i<j;++i,Out+=8,In+=8)
{
// char Prd[8] = "";
BasicDes(Out,In,&m_SubKey[0],bType);
BasicDes(Out,Out,&m_SubKey[1],!bType);
BasicDes(Out,Out,&m_SubKey[2],bType);
}
}
}
else //CBC模式
{
char cvec[8] = {0}; //扭转向量
char cvin[8] = ""; //中间变量
if (nKey == 1) //单Key
{
for(i=0,j=datalen>>3;i<j;++i,Out+=8,In+=8)
{
if (bType==0)//加密
{
for(j=0;j<8;++j) //将输入与扭转变量异或
{
cvin[j] = In[j] ^ cvec[j];
}
BasicDes(Out,cvin,&m_SubKey[0],bType);
memcpy(cvec,Out,8); //将输出设定为扭转变量
}
else
{
BasicDes(Out,In,&m_SubKey[0],bType);
for(j=0;j<8;++j) //将输出与扭转变量异或
{
Out[j] = Out[j] ^ cvec[j];
}
memcpy(cvec,In,8); //将输入设定为扭转变量
}
}
}
else if (nKey == 2) //3DES CBC 2Key
{
for(i=0,j=datalen>>3;i<j;++i,Out+=8,In+=8)
{
if (bType==0)//加密
{
for(j=0;j<8;++j) //将输入与扭转变量异或
{
cvin[j] = In[j] ^ cvec[j];
}
BasicDes(Out,cvin,&m_SubKey[0],bType);
BasicDes(Out,Out,&m_SubKey[1],!bType);
BasicDes(Out,Out,&m_SubKey[0],bType);
memcpy(cvec,Out,8); //将输出设定为扭转变量
}
else //解密
{
BasicDes(Out,In,&m_SubKey[0],bType);
BasicDes(Out,Out,&m_SubKey[1],!bType);
BasicDes(Out,Out,&m_SubKey[0],bType);
for(j=0;j<8;++j) //将输出与扭转变量异或
{
Out[j] = Out[j] ^ cvec[j];
}
memcpy(cvec,In,8); //将输入设定为扭转变量
}
}
}
else //3DES CBC 3Key
{
for( i=0,j=datalen>>3;i<j;++i,Out+=8,In+=8)
{
if (bType==0)//加密)
{
for( j=0;j<8;++j) //将输入与扭转变量异或
{
cvin[j] = In[j] ^ cvec[j];
}
BasicDes(Out,cvin,&m_SubKey[0],bType);
BasicDes(Out,Out,&m_SubKey[1],!bType);
BasicDes(Out,Out,&m_SubKey[2],bType);
memcpy(cvec,Out,8); //将输出设定为扭转变量
}
else
{
BasicDes(Out,In,&m_SubKey[2],bType);
BasicDes(Out,Out,&m_SubKey[1],!bType);
BasicDes(Out,Out,&m_SubKey[0],bType);
for(j=0;j<8;++j) //将输出与扭转变量异或
{
Out[j] = Out[j] ^ cvec[j];
}
memcpy(cvec,In,8); //将输入设定为扭转变量
}
}
}
}
return 1;
}
//---------------------------------------------------------------------------
//
// number left rotations of pc1
//
//---------------------------------------------------------------------------
const char LOOP_Table[16] =
{
1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1
};
//---------------------------------------------------------------------------
//
// The (in)famous S-boxes
//
//---------------------------------------------------------------------------
const char S_Box[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
};
//---------------------------------------------------------------------------
//
// 函 数 名 称: ByteToBit
// 功 能 描 述: 把BYTE转化为Bit流
// 参 数 说 明: Out: 输出的Bit流[in][out]
// In: 输入的BYTE流[in]
// bits: Bit流的长度[in]
//
// 返回值 说明: void
//
//---------------------------------------------------------------------------
static void ByteToBit(char *Out, const char *In, int bits)
{
int i=0;
for(i=0; i<bits; ++i)
Out[i] = ((In[i>>3]>>(7 - (i&7))) & 1);
}
//---------------------------------------------------------------------------
//
// 函 数 名 称: BitToByte
// 功 能 描 述: 把Bit转化为Byte流
// 参 数 说 明: Out: 输出的BYTE流[in][out]
// In: 输入的Bit流[in]
// bits: Bit流的长度[in]
//
// 返回值 说明: void
//
//---------------------------------------------------------------------------
static void BitToByte(char *Out, const char *In, int bits)
{
int i=0;
memset(Out, 0, bits>>3);
for(i=0; i<bits; ++i)
Out[i>>3] |= In[i]<<(7 - i&7);
}
//---------------------------------------------------------------------------
//
// 函 数 名 称: RotateL
// 功 能 描 述: 把BIT流按位向左迭代
// 参 数 说 明: In: 输入的Bit流[in]
// len: Bit流的长度[in]
// loop: 向左迭代的长度
// 返回值 说明: void
//
//---------------------------------------------------------------------------
static void RotateL(char *In, int len, int loop)
{
char Tmp[256];
memcpy(Tmp, In, loop);
memcpy(In, In+loop, len-loop);
memcpy(In+len-loop, Tmp, loop);
}
//---------------------------------------------------------------------------
//
//
// 函 数 名 称: Xor
// 功 能 描 述: 把两个Bit流进行异或
// 参 数 说 明: InA: 输入的Bit流[in][out]
// InB: 输入的Bit流[in]
// loop: Bit流的长度
//
// 返回值 说明: void
//
//---------------------------------------------------------------------------
static void Xor(char *InA, const char *InB, int len)
{
int i=0;
for(i=0; i<len; ++i) InA[i] ^= InB[i];
}
//---------------------------------------------------------------------------
//
// 函 数 名 称: Transform
// 功 能 描 述: 把两个Bit流按表进行位转化
// 参 数 说 明: Out: 输出的Bit流[out]
// In: 输入的Bit流[in]
// Table: 转化需要的表指针
// len: 转化表的长度
//
// 返回值 说明: void
//
//---------------------------------------------------------------------------
static void Transform(char *Out, char *In, const char *Table, int len)
{
char Tmp[256];
int i=0;
for (i=0; i<len; ++i) Tmp[i] = In[ Table[i]-1 ];
memcpy(Out, Tmp, len);
}
//-----------------------------------------------------------------------------
//
// Crypto_X86.c
//
// 本程序用软件实现Des
//
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <mem.h>
#include "Crypto_X86.h"
//---------------------------------------------------------------------------
#define Bits128 16
#define Bits192 24
#define Bits256 32
//---------------------------------------------------------------------------
//加密解密
enum
{
ENCRYPT =0, //加密
DECRYPT //解密
};
//DES算法的模式
enum
{
ECB = 0, //ECB模式
CBC //CBC模式
};
//---------------------------------------------------------------------------
typedef char (*PSubKey)[16][48];
//---------------------------------------------------------------------------
void SetSubKey(PSubKey pSubKey, const char Key[8]);
void BasicDes(char Out[8], char In[8], const PSubKey pSubKey, char Type);
//---------------------------------------------------------------------------
//
// initial permutation IP
//
//---------------------------------------------------------------------------
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
};
//---------------------------------------------------------------------------
//
// permuted choice table (key)
//
//---------------------------------------------------------------------------
const char PC1_Table[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
};
//---------------------------------------------------------------------------
//
// permuted choice key (table)
//
//---------------------------------------------------------------------------
const char PC2_Table[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
};
//-----------------------------------------------------------------------------
//
// Crypto_Des.c
//
//-----------------------------------------------------------------------------
#include <stdio.h>
#include "Crypto_X86.h"
#include "Crypto_Des.h"
//---------------------------------------------------------------------------
//
// 8字节加密
//
//---------------------------------------------------------------------------
void Des08E(UICC_UINT1 FAR_DATA * Dst8,UICC_UINT1 FAR_DATA * Plain8,UICC_UINT1 FAR_DATA * Key8)
{
RunDes(0,0,(char*)Plain8,(char*)Dst8,8,(char*)Key8,8);
}
//---------------------------------------------------------------------------
//
// 8字节解密
//
//---------------------------------------------------------------------------
void Des08D(UICC_UINT1 FAR_DATA * Dst8,UICC_UINT1 FAR_DATA * Cipher8,UICC_UINT1 FAR_DATA * Key8)
{
RunDes(1,0,(char*)Cipher8,(char*)Dst8,8,(char*)Key8,8);
}
//---------------------------------------------------------------------------
void Des08E_T(UICC_UINT1 FAR_DATA * Dst8,UICC_UINT1 FAR_DATA * Plain8,UICC_UINT1 FAR_DATA * Key16)
{
RunDes(0,0,(char*)Plain8,(char*)Dst8,8,(char*)Key16,16);
}
//---------------------------------------------------------------------------
void Des08D_T(UICC_UINT1 FAR_DATA * Dst8,UICC_UINT1 FAR_DATA * Cipher8,UICC_UINT1 FAR_DATA * Key16)
{
RunDes(1,0,(char*)Cipher8,(char*)Dst8,8,(char*)Key16,16);
}
//---------------------------------------------------------------------------
void Des16E_T(UICC_UINT1 FAR_DATA * Dst16,UICC_UINT1 FAR_DATA * Plain16,UICC_UINT1 FAR_DATA * Key16)
{
Des08E_T(Dst16,Plain16,Key16);
Des08E_T(Dst16+8,Plain16+8,Key16);
}
//---------------------------------------------------------------------------
void Des16D_T(UICC_UINT1 FAR_DATA * Dst16,UICC_UINT1 FAR_DATA * Cipher16,UICC_UINT1 FAR_DATA * Key16)
{
Des08D_T(Dst16,Cipher16,Key16);
Des08D_T(Dst16+8,Cipher16+8,Key16);
}
//---------------------------------------------------------------------------
void DesNE_T(UICC_UINT1 FAR_DATA * Dst,UICC_UINT1 FAR_DATA * Plain,UICC_UINT1 FAR_DATA * Key16,UICC_UINT1 nLen)
{
if (nLen&0x7) return;
while (nLen>0)
{
Des08E_T(Dst,Plain,Key16);
Dst+=8;
Plain+=8;
nLen-=8;
}
}
//---------------------------------------------------------------------------
void DesND_T(UICC_UINT1 FAR_DATA * Dst,UICC_UINT1 FAR_DATA * Cipher,UICC_UINT1 FAR_DATA * Key16,UICC_UINT1 nLen)
{
if (nLen&0x7) return;
while (nLen>0)
{
Des08D_T(Dst,Cipher,Key16);
Dst+=8;
Cipher+=8;
nLen-=8;
}
}
//---------------------------------------------------------------------------
void DesNE(UICC_UINT1 FAR_DATA * Dst,UICC_UINT1 FAR_DATA * Plain,UICC_UINT1 FAR_DATA * Key16,UICC_UINT1 nLen)
{
if (nLen&0x7) return;
while (nLen>0)
{
Des08E(Dst,Plain,Key16);
Dst+=8;
Plain+=8;
nLen-=8;
}
}
//---------------------------------------------------------------------------
void DesND(UICC_UINT1 FAR_DATA * Dst,UICC_UINT1 FAR_DATA * Cipher,UICC_UINT1 FAR_DATA * Key16,UICC_UINT1 nLen)
{
if (nLen&0x7) return;
while (nLen>0)
{
Des08D(Dst,Cipher,Key16);
Dst+=8;
Cipher+=8;
nLen-=8;
}
}
//---------------------------------------------------------------------------
//
// End file
//
//---------------------------------------------------------------------------