📄 des.lst
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C51 COMPILER V8.18 DES 05/01/2010 21:26:03 PAGE 1
C51 COMPILER V8.18, COMPILATION OF MODULE DES
OBJECT MODULE PLACED IN des.OBJ
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE des.c LARGE ROM(COMPACT) BROWSE DEBUG OBJECTEXTEND
line level source
1 #include <stc12.h>
2 unsigned char r_sf_cnt,s_sf_cnt;
3 ////////////初始置换表Init_Table ///////////////////
4 unsigned char code Init_Table[64] =
5 {
6 57,49,41,33,25,17,9,1,59,51,43,35,27,19,11,3,
7 61,53,45,37,29,21,13,5,63,55,47,39,31,23,15,7,
8 56,48,40,32,24,16,8,0,58,50,42,34,26,18,10,2,
9 60,52,44,36,28,20,12,4,62,54,46,38,30,22,14,6
10 };
11 ////////////逆初始置换表IP^-1 ///////////////////////
12 unsigned char code Init_1_Table[64] =
13 {
14 39,7,47,15,55,23,63,31,38,6,46,14,54,22,62,30,
15 37,5,45,13,53,21,61,29,36,4,44,12,52,20,60,28,
16 35,3,43,11,51,19,59,27,34,2,42,10,50,18,58,26,
17 33,1,41,9,49,17,57,25,32,0,40,8,48,16,56,24
18 };
19 ////////////置换选择1 ///////////////////////////////
20 unsigned char code C_Rep_1[56] =
21 {
22 56,48,40,32,24,16,8,0,57,49,41,33,25,17,
23 9,1,58,50,42,34,26,18,10,2,59,51,43,35,
24 62,54,46,38,30,22,14,6,61,53,45,37,29,21,
25 13,5,60,52,44,36,28,20,12,4,27,19,11,3
26 };
27 ////////////置换选择2 ////////////////////////////////
28 unsigned char code C_Rep_2[48] =
29 {
30 13,16,10,23,0,4,2,27,14,5,20,9,22,18,11,3,
31 25,7,15,6,26,19,12,1,40,51,30,36,46,54,29,39,
32 50,44,32,46,43,48,38,55,33,52,45,41,49,35,28,31
33 };
34 ////////////扩充置换表E/////////////////////////////
35 unsigned char code E_Table[48] =
36 {
37 31, 0, 1, 2, 3, 4,3, 4, 5, 6, 7, 8,
38 7, 8,9,10,11,12,11,12,13,14,15,16,
39 15,16,17,18,19,20,19,20,21,22,23,24,
40 23,24,25,26,27,28,27,28,29,30,31, 0
41 };
42
43 ////////////置换函数F //////////////////////////////
44 unsigned char code F_Table[32] =
45 {
46 15,6,19,20,28,11,27,16,0,14,22,25,4,17,30,9,
47 1,7,23,13,31,26,2,8,18,12,29,5,21,10,3,24
48 };
49 ////////////S盒 ///////////////////////////////////
50 unsigned char code S[8][4][16] =
51 //S1
52 {{{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},
53 {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}},
54 //S2
55 {{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},
C51 COMPILER V8.18 DES 05/01/2010 21:26:03 PAGE 2
56 {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}},
57 //S3
58 {{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},
59 {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}},
60 //S4
61 {{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},
62 {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}},
63 //S5
64 {{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},
65 {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}},
66 //S6
67 {{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},
68 {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}},
69 //S7
70 {{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},
71 {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}},
72 //S8
73 {{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},
74 {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}}};
75
76 unsigned char code M_Times[16] = {1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};
77
78 ///////////////中断服务程序,进行数据处理/////////////////////
79
80 void Serial_ISR(void)interrupt 4
81 {
82 1 unsigned char Data_Block[8],Data_Bits[64],subKeys[48];
83 1 unsigned char cnt0,cnt1,s_cnt1,s_cnt2;
84 1 unsigned char temp0[64],temp1[48];
85 1 unsigned char line,row,output;
86 1 unsigned char Flag;
87 1
88 1 if(RI)
89 1 {
90 2 RI=0;
91 2 Data_Block[r_sf_cnt]=SBUF;
92 2 r_sf_cnt++;
93 2 if(r_sf_cnt==8)
94 2 {
95 3 ES=0;
96 3 Flag=0;
97 3 r_sf_cnt=0;
98 3 for(cnt0 = 0; cnt0 < 8; cnt0++)
99 3 for(cnt1=0;cnt1<8;cnt1++)
100 3 Data_Bits[(cnt0<<3)+cnt1]=(Data_Block[cnt0]>>cnt1)&1; // 转变为二进制数据流
101 3 ////////////////进行16轮代换////////////////////////////////////
102 3 for(cnt0 = 0; cnt0 < 16; cnt0++)
103 3 {
104 4 //////////生成子密钥//////////////
105 4 for(cnt1=0;cnt1<56;cnt1++)
106 4 temp0[cnt1]=Data_Bits[C_Rep_1[cnt1]];
107 4 for(cnt1=0;cnt1<M_Times[cnt0];cnt1++) //循环左移
108 4 temp1[cnt1]=temp0[cnt1];
109 4 for(cnt1=0;cnt1<M_Times[cnt0];cnt1++) //保存将要循环移动到右边的位
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