}
system("pause");
system("cls");
}
}
//~main.cpp
以下为des的代码:
//DES.cpp
#include
#include
#include
#include
#include"DES.h"
usingnamespacestd;
////////////////////////////////////////////////////////////////////
//initialpermutationIP
conststaticcharIP_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
};
//finalpermutationIP^-1
conststaticcharIPR_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
};
//expansionoperationmatrix
staticconstcharE_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-bitpermutationfunctionPusedontheoutputoftheS-boxes
conststaticcharP_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
};
//permutedchoicetable(key)
conststaticcharPC1_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
};
//permutedchoicekey(table)
conststaticcharPC2_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
};
//numberleftrotationsofpc1
conststaticcharLOOP_Table[16]={
1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1
};
//externcharS_Box[8][4][16];
//The(in)famousS-boxes
//conststaticcharS_Box[8][4][16]={
staticcharS_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
};
//////////////////////////////////////////////////////////////////////////
staticboolSubKey[16][48];//16圈子密钥
//////////////////////////////////////////////////////////////////////////
voidECB_Des_Run(charOut[8],charIn[8],boolType)
{
staticboolM[64],Tmp[32],*Li=&M[0],*Ri=&M[32];
ByteToBit(M,In,64);
Transform(M,M,IP_Table,64);
if(Type==ENCRYPT){
//fk(L,R)=(L^F(R,SK),R)
for(inti=0;i<16;i++){
memcpy(Tmp,Ri,32);
F_func(Ri,SubKey[i]);
Xor(Ri,Li,32);
memcpy(Li,Tmp,32);
}
}else{
for(inti=15;i>=0;i--){
memcpy(Tmp,Li,32);
F_func(Li,SubKey[i]);
Xor(Li,Ri,32);
memcpy(Ri,Tmp,32);
}
}
Transform(M,M,IPR_Table,64);
BitToByte(Out,M,64);
}
voidCBC_Des_Run(charOut[8],charIn[8],boolType)
{
staticboolM[64],N[64],Tmp[32],*Li=&M[0],*Ri=&M[32];
ByteToBit(M,In,64);
ByteToBit(N,Out,64);
if(Type==ENCRYPT)
Xor(M,N,64);
Transform(M,M,IP_Table,64);
if(Type==ENCRYPT){
//fk(L,R)=(L^F(R,SK),R)
for(inti=0;i<16;i++){
memcpy(Tmp,Ri,32);
F_func(Ri,SubKey[i]);
Xor(Ri,Li,32);
memcpy(Li,Tmp,32);
}
}else{
for(inti=15;i>=0;i--){
memcpy(Tmp,Li,32);
F_func(Li,SubKey[i]);
Xor(Li,Ri,32);
memcpy(Ri,Tmp,32);
}
}
Transform(M,M,IPR_Table,64);
if(Type==DECRYPT)
Xor(M,N,64);
BitToByte(Out,M,64);
//BitToByte(In,N,64);
}
voidDes_SetKey(constcharKey[8])
{
staticboolK[64],*KL=&K[0],*KR=&K[28];
ByteToBit(K,Key,64);
//PC1Transform
Transform(K,K,PC1_Table,56);
for(inti=0;i<16;i++){
RotateL(KL,28,LOOP_Table[i]);//Leftshiftcircle
RotateL(KR,28,LOOP_Table[i]);
//PC2Transform
Transform(SubKey[i],K,PC2_Table,48);
}
}
//ARoundofDES
voidF_func(boolIn[32],constboolKi[48])
{
staticboolMR[48];
//ETransform
Transform(MR,In,E_Table,48);
Xor(MR,Ki,48);
S_func(In,MR);//SBOX
//PTransform
Tr