#include
int IP[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
};
int IP_1[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
};
int E[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
};
int P[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 };
void Char_to_Int(unsigned char in[],int out[],int len)
{
for(int i=0;i
out[i]=int(in[i]);
}
void Int_to_Char(int in[],unsigned char out[],int len)
{
for(int i=0;i
out[i]=char(in[i]);
}
void B_to_H(int in[],unsigned char out[])
{
for(int i=0;i<16;i++)
{
int temp=in[i*4]*8+in[i*4+1]*4+in[i*4+2]*2+in[i*4+3];
switch(temp)
{
case 10:out[i]='A';break;
case 11:out[i]='B';break;
case 12:out[i]='C';break;
case 13:out[i]='D';break;
case 14:out[i]='E';break;
case 15:out[i]='F';break;
default :out[i]=unsigned char(temp+48);break;
}
}
}
void H_to_B(unsigned char in[],int out[])
{
for(int i=0;i<16;i++)
switch(in[i])
{
case 'A':out[i*4]=1;out[i*4+1]=0;out[i*4+2]=1;out[i*4+3]=0;break;
case 'B':out[i*4]=1;out[i*4+1]=0;out[i*4+2]=1;out[i*4+3]=1;break;
case 'C':out[i*4]=1;out[i*4+1]=1;out[i*4+2]=0;out[i*4+3]=0;break;
case 'D':out[i*4]=1;out[i*4+1]=1;out[i*4+2]=0;ou
