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/* GSM/GPRS/3G authentication testing tool */
/* (C) 2010-2012 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 <time.h>
#include <getopt.h>
#include <unistd.h>
#include <inttypes.h>
#include <time.h>
#include <osmocom/crypt/auth.h>
#include <osmocom/core/utils.h>
static void dump_triplets_dat(struct osmo_auth_vector *vec)
{
if (vec->auth_types & OSMO_AUTH_TYPE_UMTS) {
fprintf(stderr, "triplets.dat doesn't support UMTS!\n");
return;
}
printf("imsi,");
printf("%s,", osmo_hexdump_nospc(vec->rand, sizeof(vec->rand)));
printf("%s,", osmo_hexdump_nospc(vec->sres, sizeof(vec->sres)));
printf("%s\n", osmo_hexdump_nospc(vec->kc, sizeof(vec->kc)));
}
static void dump_auth_vec(struct osmo_auth_vector *vec)
{
printf("RAND:\t%s\n", osmo_hexdump_nospc(vec->rand, sizeof(vec->rand)));
if (vec->auth_types & OSMO_AUTH_TYPE_UMTS) {
printf("AUTN:\t%s\n", osmo_hexdump_nospc(vec->autn, sizeof(vec->autn)));
printf("IK:\t%s\n", osmo_hexdump_nospc(vec->ik, sizeof(vec->ik)));
printf("CK:\t%s\n", osmo_hexdump_nospc(vec->ck, sizeof(vec->ck)));
printf("RES:\t%s\n", osmo_hexdump_nospc(vec->res, vec->res_len));
}
if (vec->auth_types & OSMO_AUTH_TYPE_GSM) {
printf("SRES:\t%s\n", osmo_hexdump_nospc(vec->sres, sizeof(vec->sres)));
printf("Kc:\t%s\n", osmo_hexdump_nospc(vec->kc, sizeof(vec->kc)));
}
}
static struct osmo_sub_auth_data test_aud = {
.type = OSMO_AUTH_TYPE_NONE,
.algo = OSMO_AUTH_ALG_NONE,
};
static void help()
{
printf( "-2 --2g\tUse 2G (GSM) authentication\n"
"-3 --3g\tUse 3G (UMTS) authentication\n"
"-a --algorithm\tSpecify name of the algorithm\n"
"-k --key\tSpecify Ki / K\n"
"-o --opc\tSpecify OPC (only for 3G)\n"
"-O --op\tSpecify OP (only for 3G)\n"
"-f --amf\tSpecify AMF (only for 3G)\n"
"-s --sqn\tSpecify SQN (only for 3G)\n"
"-A --auts\tSpecify AUTS (only for 3G)\n"
"-r --rand\tSpecify random value\n"
"-I --ipsec\tOutput in triplets.dat format for strongswan\n");
}
int main(int argc, char **argv)
{
struct osmo_auth_vector _vec;
struct osmo_auth_vector *vec = &_vec;
uint8_t _rand[16], _auts[16];
int rc, option_index;
int rand_is_set = 0;
int auts_is_set = 0;
int fmt_triplets_dat = 0;
printf("osmo-auc-gen (C) 2011-2012 by Harald Welte\n");
printf("This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY\n\n");
memset(_auts, 0, sizeof(_auts));
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' },
{ "op", 1, 0, 'O' },
{ "amf", 1, 0, 'f' },
{ "sqn", 1, 0, 's' },
{ "rand", 1, 0, 'r' },
{ "auts", 1, 0, 'A' },
{ "help", 0, 0, 'h' },
{ 0, 0, 0, 0 }
};
rc = 0;
c = getopt_long(argc, argv, "23a:k:o:f:s:r:hO:A:I", 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));
test_aud.u.umts.opc_is_op = 0;
break;
case 'O':
if (test_aud.type != OSMO_AUTH_TYPE_UMTS) {
fprintf(stderr, "Only UMTS has OP\n");
exit(2);
}
rc = osmo_hexparse(optarg, test_aud.u.umts.opc,
sizeof(test_aud.u.umts.opc));
test_aud.u.umts.opc_is_op = 1;
break;
case 'A':
if (test_aud.type != OSMO_AUTH_TYPE_UMTS) {
fprintf(stderr, "Only UMTS has AUTS\n");
exit(2);
}
rc = osmo_hexparse(optarg, _auts, sizeof(_auts));
auts_is_set = 1;
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;
case 'I':
fmt_triplets_dat = 1;
break;
case 'h':
help();
exit(0);
default:
help();
exit(1);
}
if (rc < 0) {
fprintf(stderr, "Error parsing argument of option `%c'\n", c);
exit(2);
}
}
if (!rand_is_set) {
int i;
printf("WARNING: We're using really weak random numbers!\n\n");
srand(time(NULL));
for (i = 0; i < 4; ++i) {
uint32_t r;
r = rand();
memcpy(&_rand[i*4], &r, 4);
}
}
if (test_aud.type == OSMO_AUTH_TYPE_NONE ||
test_aud.algo == OSMO_AUTH_ALG_NONE) {
help();
exit(2);
}
memset(vec, 0, sizeof(*vec));
if (!auts_is_set)
rc = osmo_auth_gen_vec(vec, &test_aud, _rand);
else
rc = osmo_auth_gen_vec_auts(vec, &test_aud, _auts, _rand, _rand);
if (rc < 0) {
if (!auts_is_set)
fprintf(stderr, "error generating auth vector\n");
else
fprintf(stderr, "AUTS from MS seems incorrect\n");
exit(1);
}
if (fmt_triplets_dat)
dump_triplets_dat(vec);
else
dump_auth_vec(vec);
if (auts_is_set)
printf("AUTS success: SEQ.MS = %" PRIu64 "\n", test_aud.u.umts.sqn);
exit(0);
}
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