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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/* GSM/GPRS/3G authentication testing tool */
/* (C) 2010-2011 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <getopt.h>
#include <osmocom/crypt/auth.h>
#include <osmocom/core/utils.h>
static void dump_auth_vec(struct osmo_auth_vector *vec)
{
printf("RAND:\t%s\n", osmo_hexdump(vec->rand, sizeof(vec->rand)));
if (vec->auth_types & OSMO_AUTH_TYPE_UMTS) {
printf("AUTN:\t%s\n", osmo_hexdump(vec->autn, sizeof(vec->autn)));
printf("IK:\t%s\n", osmo_hexdump(vec->ik, sizeof(vec->ik)));
printf("CK:\t%s\n", osmo_hexdump(vec->ck, sizeof(vec->ck)));
printf("RES:\t%s\n", osmo_hexdump(vec->res, vec->res_len));
}
if (vec->auth_types & OSMO_AUTH_TYPE_GSM) {
printf("SRES:\t%s\n", osmo_hexdump(vec->sres, sizeof(vec->sres)));
printf("Kc:\t%s\n", osmo_hexdump(vec->kc, sizeof(vec->kc)));
}
}
static struct osmo_sub_auth_data test_aud = {
.type = OSMO_AUTH_TYPE_NONE,
.algo = OSMO_AUTH_ALG_NONE,
};
int main(int argc, char **argv)
{
struct osmo_auth_vector _vec;
struct osmo_auth_vector *vec = &_vec;
uint8_t _rand[16];
int rc, option_index;
int rand_is_set = 0;
printf("osmo-auc-gen (C) 2011 by Harald Welte\n");
printf("This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY\n\n");
while (1) {
int c;
unsigned long ul;
static struct option long_options[] = {
{ "2g", 0, 0, '2' },
{ "3g", 0, 0, '3' },
{ "algorithm", 1, 0, 'a' },
{ "key", 1, 0, 'k' },
{ "opc", 1, 0, 'o' },
{ "amf", 1, 0, 'f' },
{ "sqn", 1, 0, 's' },
{ "rand", 1, 0, 'r' },
{ 0, 0, 0, 0 }
};
rc = 0;
c = getopt_long(argc, argv, "23a:k:o:f:s:r:", long_options,
&option_index);
if (c == -1)
break;
switch (c) {
case '2':
test_aud.type = OSMO_AUTH_TYPE_GSM;
break;
case '3':
test_aud.type = OSMO_AUTH_TYPE_UMTS;
break;
case 'a':
rc = osmo_auth_alg_parse(optarg);
if (rc < 0)
break;
test_aud.algo = rc;
break;
case 'k':
switch (test_aud.type) {
case OSMO_AUTH_TYPE_GSM:
rc = osmo_hexparse(optarg, test_aud.u.gsm.ki,
sizeof(test_aud.u.gsm.ki));
break;
case OSMO_AUTH_TYPE_UMTS:
rc = osmo_hexparse(optarg, test_aud.u.umts.k,
sizeof(test_aud.u.umts.k));
break;
default:
fprintf(stderr, "please specify 2g/3g first!\n");
}
break;
case 'o':
if (test_aud.type != OSMO_AUTH_TYPE_UMTS) {
fprintf(stderr, "Only UMTS has OPC\n");
exit(2);
}
rc = osmo_hexparse(optarg, test_aud.u.umts.opc,
sizeof(test_aud.u.umts.opc));
break;
case 'f':
if (test_aud.type != OSMO_AUTH_TYPE_UMTS) {
fprintf(stderr, "Only UMTS has AMF\n");
exit(2);
}
rc = osmo_hexparse(optarg, test_aud.u.umts.amf,
sizeof(test_aud.u.umts.amf));
break;
case 's':
if (test_aud.type != OSMO_AUTH_TYPE_UMTS) {
fprintf(stderr, "Only UMTS has SQN\n");
exit(2);
}
ul = strtoul(optarg, 0, 10);
test_aud.u.umts.sqn = ul;
break;
case 'r':
rc = osmo_hexparse(optarg, _rand, sizeof(_rand));
rand_is_set = 1;
break;
}
if (rc < 0) {
fprintf(stderr, "Error parsing argument of option `%c'\n", c);
exit(2);
}
}
if (!rand_is_set) {
printf("WARNING: We're using really weak random numbers!\n\n");
srand(time(NULL));
*(uint32_t *)&_rand[0] = rand();
*(uint32_t *)(&_rand[4]) = rand();
*(uint32_t *)(&_rand[8]) = rand();
*(uint32_t *)(&_rand[12]) = rand();
}
memset(vec, 0, sizeof(*vec));
rc = osmo_auth_gen_vec(vec, &test_aud, _rand);
if (rc < 0) {
fprintf(stderr, "error generating auth vector\n");
exit(1);
}
dump_auth_vec(vec);
#if 0
const uint8_t auts[14] = { 0x87, 0x11, 0xa0, 0xec, 0x9e, 0x16, 0x37, 0xdf,
0x17, 0xf8, 0x0b, 0x38, 0x4e, 0xe4 };
rc = osmo_auth_gen_vec_auts(vec, &test_aud, auts, _rand, _rand);
if (rc < 0) {
printf("AUTS failed\n");
} else {
printf("AUTS success: SEQ.MS = %lu\n", test_aud.u.umts.sqn);
}
#endif
exit(0);
}
|
