DES源代码加解密 子密钥生成.docx
- 文档编号:9601367
- 上传时间:2023-02-05
- 格式:DOCX
- 页数:36
- 大小:22.59KB
DES源代码加解密 子密钥生成.docx
《DES源代码加解密 子密钥生成.docx》由会员分享,可在线阅读,更多相关《DES源代码加解密 子密钥生成.docx(36页珍藏版)》请在冰豆网上搜索。
DES源代码加解密子密钥生成
DES源代码(加、解密+子密钥生成).txt两人之间的感情就像织毛衣,建立的时候一针一线,小心而漫长,拆除的时候只要轻轻一拉。
。
。
。
C代码
//初始置换表IP
intIP_Table[64]={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,
56,48,40,32,24,16,8,0,
58,50,42,34,26,18,10,2,
60,52,44,36,28,20,12,4,
62,54,46,38,30,22,14,6};
//逆初始置换表IP^-1
intIP_1_Table[64]={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,
32,0,40,8,48,16,56,24};
//扩充置换表E
intE_Table[48]={31,0,1,2,3,4,
3,4,5,6,7,8,
7,8,9,10,11,12,
11,12,13,14,15,16,
15,16,17,18,19,20,
19,20,21,22,23,24,
23,24,25,26,27,28,
27,28,29,30,31,0};
//置换函数P
intP_Table[32]={15,6,19,20,28,11,27,16,
0,14,22,25,4,17,30,9,
1,7,23,13,31,26,2,8,
18,12,29,5,21,10,3,24};
//S盒
intS[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}}};
//置换选择1
intPC_1[56]={56,48,40,32,24,16,8,
0,57,49,41,33,25,17,
9,1,58,50,42,34,26,
18,10,2,59,51,43,35,
62,54,46,38,30,22,14,
6,61,53,45,37,29,21,
13,5,60,52,44,36,28,
20,12,4,27,19,11,3};
//置换选择2
intPC_2[48]={13,16,10,23,0,4,2,27,
14,5,20,9,22,18,11,3,
25,7,15,6,26,19,12,1,
40,51,30,36,46,54,29,39,
50,44,32,46,43,48,38,55,
33,52,45,41,49,35,28,31};
//对左移次数的规定
intMOVE_TIMES[16]={1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};
//初始置换表IP
intIP_Table[64]={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,
56,48,40,32,24,16,8,0,
58,50,42,34,26,18,10,2,
60,52,44,36,28,20,12,4,
62,54,46,38,30,22,14,6};
//逆初始置换表IP^-1
intIP_1_Table[64]={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,
32,0,40,8,48,16,56,24};
//扩充置换表E
intE_Table[48]={31,0,1,2,3,4,
3,4,5,6,7,8,
7,8,9,10,11,12,
11,12,13,14,15,16,
15,16,17,18,19,20,
19,20,21,22,23,24,
23,24,25,26,27,28,
27,28,29,30,31,0};
//置换函数P
intP_Table[32]={15,6,19,20,28,11,27,16,
0,14,22,25,4,17,30,9,
1,7,23,13,31,26,2,8,
18,12,29,5,21,10,3,24};
//S盒
intS[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}}};
//置换选择1
intPC_1[56]={56,48,40,32,24,16,8,
0,57,49,41,33,25,17,
9,1,58,50,42,34,26,
18,10,2,59,51,43,35,
62,54,46,38,30,22,14,
6,61,53,45,37,29,21,
13,5,60,52,44,36,28,
20,12,4,27,19,11,3};
//置换选择2
intPC_2[48]={13,16,10,23,0,4,2,27,
14,5,20,9,22,18,11,3,
25,7,15,6,26,19,12,1,
40,51,30,36,46,54,29,39,
50,44,32,46,43,48,38,55,
33,52,45,41,49,35,28,31};
//对左移次数的规定
intMOVE_TIMES[16]={1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};二、模块化。
对面向过程的程序,模块化是否清晰是至关重要的。
下面是函数的声明:
C代码
intByteToBit(ElemTypech,ElemTypebit[8]);
intBitToByte(ElemTypebit[8],ElemType*ch);
intChar8ToBit64(ElemTypech[8],ElemTypebit[64]);
intBit64ToChar8(ElemTypebit[64],ElemTypech[8]);
intDES_MakeSubKeys(ElemTypekey[64],ElemTypesubKeys[16][48]);
intDES_PC1_Transform(ElemTypekey[64],ElemTypetempbts[56]);
intDES_PC2_Transform(ElemTypekey[56],ElemTypetempbts[48]);
intDES_ROL(ElemTypedata[56],inttime);
intDES_IP_Transform(ElemTypedata[64]);
intDES_IP_1_Transform(ElemTypedata[64]);
intDES_E_Transform(ElemTypedata[48]);
intDES_P_Transform(ElemTypedata[32]);
intDES_SBOX(ElemTypedata[48]);
intDES_XOR(ElemTypeR[48],ElemTypeL[48],intcount);
intDES_Swap(ElemTypeleft[32],ElemTyperight[32]);
intDES_EncryptBlock(ElemTypeplainBlock[8],ElemTypesubKeys[16][48],ElemTypecipherBlock[8]);
intDES_DecryptBlock(ElemTypecipherBlock[8],ElemTypesubKeys[16][48],ElemTypeplainBlock[8]);
intDES_Encrypt(char*plainFile,char*keyStr,char*cipherFile);
intDES_Decrypt(char*cipherFile,char*keyStr,char*plainFile);
intByteToBit(ElemTypech,ElemTypebit[8]);
intBitToByte(ElemTypebit[8],ElemType*ch);
intChar8ToBit64(ElemTypech[8],ElemTypebit[64]);
intBit64ToChar8(ElemTypebit[64],ElemTypech[8]);
intDES_MakeSubKeys(ElemTypekey[64],ElemTypesubKeys[16][48]);
intDES_PC1_Transform(ElemTypekey[64],ElemTypetempbts[56]);
intDES_PC2_Transform(ElemTypekey[56],ElemTypetempbts[48]);
intDES_ROL(ElemTypedata[56],inttime);
intDES_IP_Transform(ElemTypedata[64]);
intDES_IP_1_Transform(ElemTypedata[64]);
intDES_E_Transform(ElemTypedata[48]);
intDES_P_Transform(ElemTypedata[32]);
intDES_SBOX(ElemTypedata[48]);
intDES_XOR(ElemTypeR[48],ElemTypeL[48],intcount);
intDES_Swap(ElemTypeleft[32],ElemTyperight[32]);
intDES_EncryptBlock(ElemTypeplainBlock[8],ElemTypesubKeys[16][48],ElemTypecipherBlock[8]);
intDES_DecryptBlock(ElemTypecipherBlock[8],ElemTypesubKeys[16][48],ElemTypeplainBlock[8]);
intDES_Encrypt(char*plainFile,char*keyStr,char*cipherFile);
intDES_Decrypt(char*cipherFile,char*keyStr,char*plainFile);其实,模块化与速度也是一对矛盾,因为了解函数运行机制的人就知道,我们的计算机在运行某个函数时,是要用栈来保存入口状态的,在运行结束后又要恢复现场,这些操作势必会影像系统性能,但我们不能将所有代码写在Main函数里,虽然那样做我们的加密算法效率又会大增,但是那种代码未免太过于丑陋不堪。
因此,为了帅,还是牺牲一下性能吧。
三、实现。
代码里能用移位操作都尽量用了移位操作,能用逻辑运算符的都用了逻辑运算符。
详细的行注相信你可以看懂吧。
有问题可以M我。
C代码
//字节转换成二进制
intByteToBit(ElemTypech,ElemTypebit[8]){
intcnt;
for(cnt=0;cnt<8;cnt++){
*(bit+cnt)=(ch>>cnt)&1;
}
return0;
}
//二进制转换成字节
intBitToByte(ElemTypebit[8],ElemType*ch){
intcnt;
for(cnt=0;cnt<8;cnt++){
*ch|=*(bit+cnt)< } return0; } //将长度为8的字符串转为二进制位串 intChar8ToBit64(ElemTypech[8],ElemTypebit[64]){ intcnt; for(cnt=0;cnt<8;cnt++){ ByteToBit(*(ch+cnt),bit+(cnt<<3)); } return0; } //将二进制位串转为长度为8的字符串 intBit64ToChar8(ElemTypebit[64],ElemTypech[8]){ intcnt; memset(ch,0,8); for(cnt=0;cnt<8;cnt++){ BitToByte(bit+(cnt<<3),ch+cnt); } return0; } //生成子密钥 intDES_MakeSubKeys(ElemTypekey[64],ElemTypesubKeys[16][48]){ ElemTypetemp[56]; intcnt; DES_PC1_Transform(key,temp);//PC1置换 for(cnt=0;cnt<16;cnt++){//16轮跌代,产生16个子密钥 DES_ROL(temp,MOVE_TIMES[cnt]);//循环左移 DES_PC2_Transform(temp,subKeys[cnt]);//PC2置换,产生子密钥 } return0; } //密钥置换1 intDES_PC1_Transform(ElemTypekey[64],ElemTypetempbts[56]){ intcnt; for(cnt=0;cnt<56;cnt++){ tempbts[cnt]=key[PC_1[cnt]]; } return0; } //密钥置换2 intDES_PC2_Transform(ElemTypekey[56],ElemTypetempbts[48]){ intcnt; for(cnt=0;cnt<48;cnt++){ tempbts[cnt]=key[PC_2[cnt]]; } return0; } //循环左移 intDES_ROL(ElemTypedata[56],inttime){ ElemTypetemp[56]; //保存将要循环移动到右边的位 memcpy(temp,data,time); memcpy(temp+time,data+28,time); //前28位移动 memcpy(data,data+time,28-time); memcpy(data+28-time,temp,time); //后28位移动 memcpy(data+28,data+28+time,28-time); memcpy(data+56-time,temp+time,time); return0; } //IP置换 intDES_IP_Transform(ElemTypedata[64]){ intcnt; ElemTypetemp[64]; for(cnt=0;cnt<
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- DES源代码加解密 子密钥生成 DES 源代码 解密 密钥 生成