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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* mkrandkeys - make a key file for xntpd with some quite random keys
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "ntp_stdlib.h"
#define STREQ(a, b) (*(a) == *(b) && strcmp((a), (b)) == 0)
char *progname;
int debug;
u_int32 keydata[2];
int std = 1; /* DES standard key format */
u_char dokey[16] = { 0 };
static void rand_data P((u_int32 *));
/*
* main - parse arguments and handle options
*/
void
main(argc, argv)
int argc;
char *argv[];
{
int c;
int i;
int j;
int errflg = 0;
int numkeys;
u_int32 tmp;
char *passwd;
extern int ntp_optind;
extern char *ntp_optarg;
extern char *getpass();
numkeys = 0;
progname = argv[0];
passwd = NULL;
while ((c = ntp_getopt(argc, argv, "dnp:s")) != EOF)
switch (c) {
case 'd':
++debug;
break;
case 'n':
std = 0;
break;
case 'p':
passwd = ntp_optarg;
break;
case 's':
std = 1;
break;
default:
errflg++;
break;
}
numkeys = 0;
for (; !errflg && ntp_optind < argc; ntp_optind++) {
c = atoi(argv[ntp_optind]);
if (c <= 0 || c > 15) {
(void) fprintf(stderr, "%s: invalid key number `%s'\n",
progname, argv[ntp_optind]);
exit(2);
}
dokey[c] = 1;
numkeys++;
}
if (errflg || numkeys == 0) {
(void) fprintf(stderr,
"usage: %s [-ns] [-p seed] key# [key# ...]\n",
progname);
exit(2);
}
while (passwd == 0 || *passwd == '\0') {
passwd = getpass("Seed: ");
if (*passwd == '\0') {
(void) fprintf(stderr,
"better use a better seed than that\n");
}
}
keydata[0] = keydata[1] = 0;
for (i = 0; i < 8 && *passwd != '\0'; i++) {
keydata[i/4] |= ((((u_int32)(*passwd))&0xff)<<(1+((3-(i%4))*8)));
passwd++;
}
for (i = 1; i <= 15; i++) {
if (dokey[i]) {
for (c = 0, tmp = 0; c < 32; c += 4)
tmp |= (i << c);
keydata[0] ^= tmp;
keydata[1] ^= tmp;
rand_data(keydata);
DESauth_parity(keydata);
if (std) {
(void)printf("%-2d S\t%08x%08x\n",
i, keydata[0], keydata[1]);
} else {
for (j = 0; j < 2; j++) {
keydata[j]
= ((keydata[j] & 0xfefefefe) >> 1)
| ((keydata[j] & 0x01010101) << 7);
}
(void)printf("%-2d N\t%08x%08x\n",
i, keydata[0], keydata[1]);
}
}
}
exit(0);
}
char *volatile_file[] = {
"/bin/echo",
"/bin/sh",
"/bin/cat",
"/bin/ls",
"/bin/stty",
"/bin/date",
"/bin/cat",
"/bin/cc",
"/etc/motd",
"/etc/utmp",
"/dev/kmem",
"/dev/null",
"",
};
#define NEXT(X) (0x1e1f2f2d*(X) + 0x361962e9)
static void
rand_data(data)
u_int32 *data;
{
register i;
struct stat buf;
extern long time();
char ekeys[128], dkeys[128];
*data ^= 0x9662f394;
*(data+1) ^= 0x9f17c55f;
DESauth_subkeys(data, ekeys, dkeys);
*data ^= NEXT(getpid() + (getuid() << 16));
*(data+1) ^= NEXT(time((long *)0));
DESauth_des(data, ekeys);
for (i = 0; strlen(volatile_file[i]); i++) {
if (stat(volatile_file[i], &buf) == -1)
continue;
if (i & 1) {
*data ^= NEXT(buf.st_atime);
*(data+1) ^= NEXT(buf.st_mtime);
} else {
*data ^= NEXT(buf.st_mtime);
*(data+1) ^= NEXT(buf.st_atime);
}
DESauth_des(data, ekeys);
}
}
|
