1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* This crypt(3) validation program shipped with UFC-crypt
* is derived from one distributed with Phil Karns PD DES package.
*
* @(#)cert.c 1.8 11 Aug 1996
*/
#include <stdio.h>
#include <stdlib.h>
#include "crypt.h"
static int totfails = 0;
static void good_bye (void) __attribute__ ((noreturn));
static void good_bye (void)
{
if(totfails == 0) {
printf("Passed DES validation suite\n");
exit(0);
} else {
printf("%d failures during DES validation suite!!!\n", totfails);
exit(1);
}
}
static void get8(char *cp)
{
int i,j,t;
for(i=0;i<8;i++){
scanf("%2x",&t);
if(feof(stdin))
good_bye();
for(j=0; j<8 ; j++) {
*cp++ = (t & (0x01 << (7-j))) != 0;
}
}
}
static void put8(char *cp)
{
int i,j,t;
for(i=0;i<8;i++){
t = 0;
for(j = 0; j<8; j++)
t = (t<<1) | *cp++;
printf("%02x", t);
}
}
int main(void)
{
char key[64],plain[64],cipher[64],answer[64];
int i;
int test;
int fail;
for(test=0;!feof(stdin);test++){
get8(key);
printf(" K: "); put8(key);
setkey(key);
get8(plain);
printf(" P: "); put8(plain);
get8(answer);
printf(" C: "); put8(answer);
for(i=0;i<64;i++)
cipher[i] = plain[i];
encrypt(cipher, 0);
for(i=0;i<64;i++) {
if(cipher[i] != answer[i])
break;
}
fail = 0;
if(i != 64){
printf(" Encrypt FAIL");
fail++; totfails++;
}
encrypt(cipher, 1);
for(i=0;i<64;i++)
if(cipher[i] != plain[i])
break;
if(i != 64){
printf(" Decrypt FAIL");
fail++; totfails++;
}
if(fail == 0)
printf(" OK");
printf("\n");
}
good_bye();
}
|
