DES加密算法代码Word格式.docx
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DES加密算法代码Word格式.docx
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//用户输入的密钥
intData64[64];
//8个明文通过十进制转二进制得到的64bit明文
intKey64[64];
//8个密钥通过十进制转二进制得到的64bit密钥
intDataTemp[64];
//Data64[]通过IP置换得到的64bit明文,用于得到L0和R0
intL0[32],R0[32];
intflagDorK=0;
//标志位,如果是1的时候表示明文,是0的时候表示密文
//此段全局变量服务于段雪琦所写所用函数
//PC_1置换坐标表
intPC_1[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};
//PC_2置换坐标表
intPC_2[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};
//迭代左移位数数组
intlsi[16]={1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};
//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};
intKeyOutBox[48]={0};
//输出的子密钥数组
intlsinumber=0;
//用于记录是第i次加密,lsinumber等于i
//sherry第二个函数所用
//f操作中将R0扩展为48位的置换坐标表
intfExpand48[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,
28,29,30,31,32,31};
//P变换置换坐标表
intfPChange[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};
//S盒置换坐标表
intsBox[8][4][16]={
{
{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}
},
{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},
{0,14,4,11,10,4,13,1,5,8,12,6,9,3,2,15},
{13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9}
{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}
{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}
{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},
{10,6,9,0,12,11,7,8,15,9,12,5,6,3,0,14},
{11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3}
{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}
{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}
{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}
}
};
/*---------------------生成R0L0-----------------------*
**将输入的分别为8个的明文和密钥转化为64bit的明文和密钥,**
**分别放入Data64[]和Key64[];
**
**将生成的64bit的明文通过IP置换得到L0[]和R0[]**
**-----------------------------------------------------*/
voidR0andL0(chartempData[8])
{
inti,j,temp,y;
intk=0;
inttempBox[64];
intmtemp=0;
for(i=0;
i<
8;
i++)
{
for(j=7;
j>
=0;
j--)
{
temp=tempData[i]&
(1<
<
j);
if(0==temp)
{
tempBox[k]=0;
k++;
}
else
tempBox[k]=1;
}
}
//当flagDorK等于1时,为明文转化,生成L0和R0
if(flagDorK==1)
printf("
转化为64bit明文\n"
);
for(y=0;
y<
64;
y++)
Data64[y]=tempBox[y];
tempBox[y]=0;
printf("
%d"
Data64[y]);
if(y==7||y==15||y==23||y==39||y==47||y==55||y==63)
{
printf("
"
if(y==31)
\n"
DataTemp[y]=Data64[DataIP[y]-1];
if(y<
32)
L0[y]=DataTemp[y];
else
R0[y-32]=DataTemp[y];
\n明文Data过IP置换后得到:
printf("
L0:
i<
32;
i++)
L0[i]);
if(i==7||i==15||i==23||i==31)
\nR0:
R0[i]);
prin
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