- /************************************************************************/
- /* DES、3DES CBC加密解密 */
- /* 原作者:不详--仍然表示感谢 */
- /* 修 改:飘云(添加 DES CBC模式加密、解密算法) */
- /************************************************************************/
- #include <windows.h>
- enum {ENCRYPT, DECRYPT};
- //////////////////////////////////////////////////////////////////////////
- // 加/解密 Type—ENCRYPT:加密,DECRYPT:解密
- void Des_Run(char Out[8], char In[8], bool Type = ENCRYPT);
- // 设置密钥
- void Des_SetKey(const char Key[8]);
- int DESede_CBC_decode(byte *lpIndata, int nlen, byte *lpOutData, byte lpK1[8], byte lpK2[8], byte lpK3[8], byte lpvi[8]);
- int DESede_CBC_encode(byte *lpIndata, int nlen, byte *lpOutData, byte lpK1[8], byte lpK2[8], byte lpK3[8], byte lpvi[8]);
- // DES算法CBC模式 -- 飘云
- int DES_CBC_encode(byte *lpIndata,int nlen, byte *lpOutData, byte lpKey[8], byte lpIV[8]);
- int DES_CBC_decode(byte *lpIndata, int nlen, byte *lpOutData, byte lpKey[8], byte lpIV[8]);
- void DES_encode(byte *lpIndata, int nlen, byte *lpOut, byte *lpkey);
- void DES_decode(byte *lpIndata, int nlen, byte *lpOut, byte *lpkey);
- //////////////////////////////////////////////////////////////////////////
复制代码
- /************************************************************************/
- /* DES、3DES CBC加密解密 */
- /* 原作者:不详--仍然表示感谢 */
- /* 修 改:飘云(添加 DES CBC模式加密、解密算法) */
- /************************************************************************/
- #include "3DES.h"
- #include <stdio.h>
- //////////////////////////////////////////////////////////////////////////
- static void F_func(bool In[32], const bool Ki[48]);// f 函数
- static void S_func(bool Out[32], const bool In[48]);// S 盒代替
- static void Transform(bool *Out, bool *In, const char *Table, int len);// 变换
- static void Xor(bool *InA, const bool *InB, int len);// 异或
- static void RotateL(bool *In, int len, int loop);// 循环左移
- static void ByteToBit(bool *Out, const char *In, int bits);// 字节组转换成位组
- static void BitToByte(char *Out, const bool *In, int bits);// 位组转换成字节组
- //////////////////////////////////////////////////////////////////////////
- // initial permutation IP
- const static 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 static 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
- static 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 static 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 static 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 static 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
- };
- // number left rotations of pc1
- const static 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 static 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
- };
- //////////////////////////////////////////////////////////////////////////
- static bool SubKey[16][48]; // 16圈子密钥
- //////////////////////////////////////////////////////////////////////////
- void Des_Run(char Out[8], char In[8], bool Type)
- {
- bool M[64], Tmp[32], *Li = &M[0], *Ri = &M[32];
- ByteToBit(M, In, 64);
- Transform(M, M, IP_Table, 64);
- if(ENCRYPT != Type)
- {
- bool M2[64];
- memcpy(M2,M,32);
- memcpy(M,M + 32,32);
- memcpy(M + 32,M2,32);
- }
- if( Type == ENCRYPT ){
- for(int i=0; i<16; i++) {
- memcpy(Tmp, Ri, 32);
- F_func(Ri, SubKey[i]);
- Xor(Ri, Li, 32);
- memcpy(Li, Tmp, 32);
- }
- }else{
- for(int i=15; i>=0; i--) {
- memcpy(Tmp, Li, 32);
- F_func(Li, SubKey[i]);
- Xor(Li, Ri, 32);
- memcpy(Ri, Tmp, 32);
- }
- }
- if(ENCRYPT == Type)
- {
- bool M2[64];
- memcpy(M2,M,32);
- memcpy(M,M + 32,32);
- memcpy(M + 32,M2,32);
- }
- Transform(M, M, IPR_Table, 64);
- BitToByte(Out, M, 64);
- }
- void Des_SetKey(const char Key[8])
- {
- bool K[64], *KL = &K[0], *KR = &K[28];
- unsigned char K2[64];
- ByteToBit((bool*)K2,Key,64);
- Transform(K, (bool *)K2, PC1_Table, 56);
- for(int i=0; i<16; i++) {
- RotateL(KL, 28, LOOP_Table[i]);
- RotateL(KR, 28, LOOP_Table[i]);
- Transform(SubKey[i], K, PC2_Table, 48);
- }
- }
- 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 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];
- ByteToBit(Out, &S_Box[i][j][k], 4);
- }
- }
- void Transform(bool *Out, bool *In, const char *Table, int len)
- {
- char Tmp[256];
- for(int i=0; i<len; i++)
- Tmp[i] = (char)In[ Table[i]-1 ];
- memcpy(Out,(bool*)Tmp, len);
- }
- void Xor(bool *InA, const bool *InB, int len)
- {
- for(int i=0; i<len; i++)
- InA[i] ^= InB[i];
- }
- void RotateL(bool *In, int len, int loop)
- {
- static bool Tmp[256];
- memcpy(Tmp, In, loop);
- memcpy(In, In+loop, len-loop);
- memcpy(In+len-loop, Tmp, loop);
- }
- void ByteToBit(bool *Out, const char *In, int bits)
- {
- int j = 0;
- if( bits / 8)
- {
- j = 7;
- }
- else
- {
- j = 3;
- }
- for(int i=0; i<bits; i++)
- {
- Out[i] = (In[i/8]>>(j - i%8)) & 1;
- }
- }
- void BitToByte(char *Out, const bool *In, int bits)
- {
- memset(Out, 0, (bits+7)/8);
- for(int i=0; i<bits; i++)
- {
- Out[i/8] |= In[i]<<(7 - i%8);
- }
- }
- /**************************************************
- //
- // 函数名称: DES_encode
- // 函数功能: 标准DES算法ECB模式加密函数
- // 函数参数: lpIndata: 数据
- // 函数参数: nlen: 数据的长度
- // 函数参数: lpOut: 加密数据
- // 函数参数: lpkey: DES算法的Key
- // 函数返回值: 无
- //
- ************************************************/
- void DES_encode(byte *lpIndata,int nlen,byte *lpOut,byte *lpkey)
- {
- Des_SetKey((char*)lpkey);
- int i = 0;
- for(i = 0;i < nlen; i += 8)
- {
- Des_Run((char*)(lpOut + i),(char*)(lpIndata + i),ENCRYPT);
- }
- }
- /**************************************************
- //
- // 函数名称: DES_decode
- // 函数功能: 标准DES算法ECB模式解密函数
- // 函数参数: lpIndata: 密文数据
- // 函数参数: nlen: 密文数据的长度
- // 函数参数: lpOut: 解密数据
- // 函数参数: lpkey: DES算法的Key
- // 函数返回值: 无
- //
- ************************************************/
- void DES_decode(byte *lpIndata, int nlen, byte *lpOut, byte *lpkey)
- {
- Des_SetKey((char*)lpkey);
- int i = 0;
-
- for(i = 0; i < nlen; i += 8)
- {
- Des_Run((char*)(lpOut + i), (char*)(lpIndata + i), DECRYPT);
- }
- }
- /**************************************************
- //
- // 函数名称: DES_CBC_encode
- // 函数功能: DES算法CBC模式的加密算法
- // 函数参数: lpIndata: 数据
- // 函数参数: nlen: 数据的长度
- // 函数参数: lpOutData: 加密数据
- // 函数参数: lpKey: DES_CBC算法的Key
- // 函数参数: lpIV: DES_CBC算法的向量
- // 函数返回值: 返回加密后数据的长度
- //
- ************************************************/
- int DES_CBC_encode(byte *lpIndata, int nlen, byte *lpOutData, byte lpKey[8], byte lpIV[8])
- {
- byte *data = (byte*)malloc(nlen + 8);
- int nFillSize = 8 - nlen % 8;
- memcpy(data, lpIndata, nlen);
- int i = 0;
- int nLoop = nlen / 8 + 1;
- for(i = 0; i < nFillSize; i++)
- {
- data[nlen + i] = (byte)nFillSize;
- }
- byte bytmp[8] = {0};
- int j = 0;
- for(i = 0; i < 8; i++)
- {
- bytmp[i] = data[i] ^ lpIV[i];
- }
- memcpy(lpOutData, lpIV, 8);
- for(i = 0; i < nLoop; i)
- {
- DES_encode(bytmp, 8, lpOutData + i * 8, lpKey);
- for(j = 0; j < 8; j++)
- {
- bytmp[j] = data[(i + 1) * 8 + j] ^ lpOutData[i * 8 + j];
- }
- i++;
- }
- free(data);
- return nLoop * 8;
- }
- /**************************************************
- //
- // 函数名称: DES_CBC_decode
- // 函数功能: DES算法CBC模式的解密算法
- // 函数参数: lpIndata: 密文数据
- // 函数参数: nlen: 密文数据的长度
- // 函数参数: lpOutData: 解密数据
- // 函数参数: lpKey: DES_CBC算法的Key
- // 函数参数: lpIV: DES_CBC算法的向量
- // 函数返回值: 返回解密后数据的长度
- //
- ************************************************/
- int DES_CBC_decode(byte *lpIndata, int nlen, byte *lpOutData, byte lpKey[8], byte lpIV[8])
- {
- int i = 0;
- int nLoop = nlen / 8;
- byte vi[8] = {0};
- int j = 0;
- memcpy(vi, lpIV, 8);
- for(i = 0; i < nLoop; i)
- {
- DES_decode(lpIndata + i * 8, 8, lpOutData + i * 8, lpKey);
- for(j = 0; j < 8; j++)
- {
- *(byte*)(lpOutData + i * 8 + j) ^= vi[j];
- }
- memcpy(vi, lpIndata + i * 8, 8);
- i++;
- }
-
- return nlen - lpOutData[nlen - 1];
- }
- /**************************************************
- //
- // 函数名称: DESede_CBC_encode
- // 函数功能: 3DES算法CBC模式的加密算法
- // 函数参数: lpIndata: 数据
- // 函数参数: nlen: 数据的长度
- // 函数参数: lpOutData: 加密数据
- // 函数参数: lpk1: 3DES_CBC算法的Key1
- // 函数参数: lpk2: 3DES_CBC算法的Key2
- // 函数参数: lpk3: 3DES_CBC算法的Key3
- // 函数参数: lpvi: 3DES_CBC算法的向量
- // 函数返回值: 返回加密后数据的长度
- //
- ************************************************/
- int DESede_CBC_encode(byte *lpIndata, int nlen, byte *lpOutData, byte lpK1[8], byte lpK2[8], byte lpK3[8], byte lpIV[8])
- {
- byte *data = (byte*)malloc(nlen + 8);
- int nFillSize = 8 - nlen % 8;
- memcpy(data, lpIndata, nlen);
- int i = 0;
- int nLoop = nlen / 8 + 1;
- for(i = 0; i < nFillSize; i++)
- {
- data[nlen + i] = (byte)nFillSize;
- }
- byte bytmp[8] = {0};
- int j = 0;
- for(i = 0; i < 8; i++)
- {
- bytmp[i] = data[i] ^ lpIV[i];
- }
- memcpy(lpOutData,lpIV,8);
- for(i = 0; i < nLoop; i)
- {
-
- DES_encode(bytmp, 8, data, lpK1);
- DES_decode(data, 8, bytmp, lpK2);
- DES_encode(bytmp, 8, lpOutData + i * 8, lpK3);
- for(j = 0; j < 8; j++)
- {
- bytmp[j] = data[(i + 1) * 8 + j] ^ lpOutData[i * 8 + j];
- }
- i++;
- }
- free(data);
- return nLoop * 8;
- }
- /**************************************************
- //
- // 函数名称: DESede_CBC_decode
- // 函数功能: 3DES算法CBC模式的解密算法
- // 函数参数: lpIndata: 密文数据
- // 函数参数: nlen: 密文数据的长度
- // 函数参数: lpOutData: 解密数据
- // 函数参数: lpk1: 3DES_CBC算法的Key1
- // 函数参数: lpk2: 3DES_CBC算法的Key2
- // 函数参数: lpk3: 3DES_CBC算法的Key3
- // 函数参数: lpvi: 3DES_CBC算法的向量
- // 函数返回值: 返回解密后数据的长度
- //
- ************************************************/
- int DESede_CBC_decode(byte *lpIndata, int nlen, byte *lpOutData, byte lpK1[8], byte lpK2[8], byte lpK3[8], byte lpvi[8])
- {
- int i = 0;
- int nLoop = nlen / 8;
- byte bytmp[8] = {0};
- byte vi[8] = {0};
- int j = 0;
- memcpy(vi,lpvi,8);
- for(i = 0;i < nLoop;i)
- {
- DES_decode(lpIndata + i * 8, 8, bytmp, lpK1);
- DES_encode(bytmp, 8, bytmp, lpK2);
- DES_decode(bytmp, 8, lpOutData + i * 8, lpK3);
- for(j = 0;j < 8;j++)
- {
- *(byte*)(lpOutData + i * 8 + j) ^= vi[j];
- }
- memcpy(vi,lpIndata + i * 8,8);
- i++;
- }
- return nlen - lpOutData[nlen - 1];
- }
复制代码
- #include <windows.h>
- #include <stdio.h>
- #include "3DES.h"
- int main(int argc, char* argv[])
- {
- byte data[8] = {0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11};
- byte retdata[8] = {0};
- byte desKey[8] = {0x20, 0x73, 0x12, 0x4d, 0x68, 0x59, 0xdd, 0x4c};
- byte desIV[8] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
-
- DES_CBC_encode(data, sizeof(data), retdata, desKey, desIV);
- int i = 0;
- printf("DES_CBC_encode:\n");
- for(i = 0; i < sizeof(retdata); i++)
- {
- printf("%.2X\n", retdata[i]);
- }
-
- ZeroMemory(&data, sizeof(data));
- DES_CBC_decode(retdata, sizeof(retdata), data, desKey, desIV);
-
- printf("DES_CBC_decode:\n");
- for(i = 0; i < sizeof(data); i++)
- {
- printf("%.2X\n", data[i]);
- }
- return 0;
- }
复制代码 |