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-rw-r--r--utils/osmo-auc-gen.c82
1 files changed, 68 insertions, 14 deletions
diff --git a/utils/osmo-auc-gen.c b/utils/osmo-auc-gen.c
index 65cfa310..50419a43 100644
--- a/utils/osmo-auc-gen.c
+++ b/utils/osmo-auc-gen.c
@@ -1,7 +1,7 @@
/*! \file osmo-auc-gen.c
* GSM/GPRS/3G authentication testing tool. */
/*
- * (C) 2010-2012 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2010-2023 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
@@ -15,10 +15,6 @@
* 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.
- *
*/
@@ -34,8 +30,20 @@
#include <osmocom/crypt/auth.h>
#include <osmocom/core/utils.h>
+#include <osmocom/core/base64.h>
#include <osmocom/gsm/gsm_utils.h>
+static void print_base64(const char *fmt, const uint8_t *data, unsigned int len)
+{
+ uint8_t outbuf[256];
+ size_t olen;
+
+ OSMO_ASSERT(osmo_base64_encode(outbuf, sizeof(outbuf), &olen, data, len) == 0);
+ OSMO_ASSERT(sizeof(outbuf) > olen);
+ outbuf[olen] = '\0';
+ printf(fmt, outbuf);
+}
+
static void dump_triplets_dat(struct osmo_auth_vector *vec)
{
if (vec->auth_types & OSMO_AUTH_TYPE_UMTS) {
@@ -53,10 +61,17 @@ 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) {
+ uint8_t inbuf[sizeof(vec->rand) + sizeof(vec->autn)];
+
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));
+
+ memcpy(inbuf, vec->rand, sizeof(vec->rand));
+ memcpy(inbuf + sizeof(vec->rand), vec->autn, sizeof(vec->autn));
+ print_base64("IMS nonce:\t%s\n", inbuf, sizeof(inbuf));
+ print_base64("IMS res:\t%s\n", vec->res, vec->res_len);
}
if (vec->auth_types & OSMO_AUTH_TYPE_GSM) {
@@ -65,12 +80,12 @@ static void dump_auth_vec(struct osmo_auth_vector *vec)
}
}
-static struct osmo_sub_auth_data test_aud = {
+static struct osmo_sub_auth_data2 test_aud = {
.type = OSMO_AUTH_TYPE_NONE,
.algo = OSMO_AUTH_ALG_NONE,
};
-static void help()
+static void help(void)
{
int alg;
printf( "-2 --2g\tUse 2G (GSM) authentication\n"
@@ -83,6 +98,7 @@ static void help()
"-s --sqn\tSpecify SQN (only for 3G)\n"
"-i --ind\tSpecify IND slot for new SQN after AUTS (only for 3G)\n"
"-l --ind-len\tSpecify IND bit length (default=5) (only for 3G)\n"
+ "-L --res-len\tSpecify RES byte length (default=8) (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");
@@ -108,10 +124,12 @@ int main(int argc, char **argv)
int fmt_triplets_dat = 0;
uint64_t ind_mask = 0;
- printf("osmo-auc-gen (C) 2011-2012 by Harald Welte\n");
+ printf("osmo-auc-gen (C) 2011-2023 by Harald Welte\n");
printf("This is FREE SOFTWARE with ABSOLUTELY NO WARRANTY\n\n");
memset(_auts, 0, sizeof(_auts));
+ memset(vec, 0, sizeof(*vec));
+ vec->res_len = 8; /* default */
while (1) {
int c;
@@ -126,6 +144,7 @@ int main(int argc, char **argv)
{ "sqn", 1, 0, 's' },
{ "ind", 1, 0, 'i' },
{ "ind-len", 1, 0, 'l' },
+ { "res-len", 1, 0, 'L' },
{ "rand", 1, 0, 'r' },
{ "auts", 1, 0, 'A' },
{ "help", 0, 0, 'h' },
@@ -134,7 +153,7 @@ int main(int argc, char **argv)
rc = 0;
- c = getopt_long(argc, argv, "23a:k:o:f:s:i:l:r:hO:A:I", long_options,
+ c = getopt_long(argc, argv, "23a:k:o:f:s:i:l:L:r:hO:A:I", long_options,
&option_index);
if (c == -1)
@@ -159,10 +178,21 @@ int main(int argc, char **argv)
case OSMO_AUTH_TYPE_GSM:
rc = osmo_hexparse(optarg, test_aud.u.gsm.ki,
sizeof(test_aud.u.gsm.ki));
+ if (rc != sizeof(test_aud.u.gsm.ki)) {
+ fprintf(stderr, "Invalid Ki length %d\n", rc);
+ exit(2);
+ }
break;
case OSMO_AUTH_TYPE_UMTS:
rc = osmo_hexparse(optarg, test_aud.u.umts.k,
sizeof(test_aud.u.umts.k));
+ /* 3GPP TS 33.102 6.3.7: "The authentication key (K) shall have a length of
+ * 128 bits or 256 bits." */
+ if (rc != 16 && rc != 32) {
+ fprintf(stderr, "Invalid K length %d\n", rc);
+ exit(2);
+ }
+ test_aud.u.umts.k_len = rc;
break;
default:
fprintf(stderr, "please specify 2g/3g first!\n");
@@ -175,6 +205,11 @@ int main(int argc, char **argv)
}
rc = osmo_hexparse(optarg, test_aud.u.umts.opc,
sizeof(test_aud.u.umts.opc));
+ if (rc != 16 && rc != 32) {
+ fprintf(stderr, "Invalid OPC length %d\n", rc);
+ exit(2);
+ }
+ test_aud.u.umts.opc_len = rc;
test_aud.u.umts.opc_is_op = 0;
break;
case 'O':
@@ -184,6 +219,11 @@ int main(int argc, char **argv)
}
rc = osmo_hexparse(optarg, test_aud.u.umts.opc,
sizeof(test_aud.u.umts.opc));
+ if (rc != 16 && rc != 32) {
+ fprintf(stderr, "Invalid OP length %d\n", rc);
+ exit(2);
+ }
+ test_aud.u.umts.opc_len = rc;
test_aud.u.umts.opc_is_op = 1;
break;
case 'A':
@@ -201,13 +241,17 @@ int main(int argc, char **argv)
}
rc = osmo_hexparse(optarg, test_aud.u.umts.amf,
sizeof(test_aud.u.umts.amf));
+ if (rc != 2) {
+ fprintf(stderr, "Invalid AMF length %d\n", rc);
+ exit(2);
+ }
break;
case 's':
if (test_aud.type != OSMO_AUTH_TYPE_UMTS) {
fprintf(stderr, "Only UMTS has SQN\n");
exit(2);
}
- sqn = strtoull(optarg, 0, 10);
+ sqn = strtoull(optarg, 0, 0);
sqn_is_set = 1;
break;
case 'i':
@@ -225,8 +269,20 @@ int main(int argc, char **argv)
}
test_aud.u.umts.ind_bitlen = atoi(optarg);
break;
+ case 'L':
+ rc = atoi(optarg);
+ if (rc != 4 && rc != 8 && rc != 16) {
+ fprintf(stderr, "Invalid RES length %u\n", rc);
+ exit(2);
+ }
+ vec->res_len = rc;
+ break;
case 'r':
rc = osmo_hexparse(optarg, _rand, sizeof(_rand));
+ if (rc != sizeof(_rand)) {
+ fprintf(stderr, "Invalid RAND length %d\n", rc);
+ exit(2);
+ }
rand_is_set = 1;
break;
case 'I':
@@ -269,8 +325,6 @@ int main(int argc, char **argv)
exit(2);
}
- memset(vec, 0, sizeof(*vec));
-
if (test_aud.type == OSMO_AUTH_TYPE_UMTS) {
uint64_t seq_1 = 1LL << test_aud.u.umts.ind_bitlen;
ind_mask = seq_1 - 1;
@@ -301,9 +355,9 @@ int main(int argc, char **argv)
}
if (!auts_is_set)
- rc = osmo_auth_gen_vec(vec, &test_aud, _rand);
+ rc = osmo_auth_gen_vec2(vec, &test_aud, _rand);
else
- rc = osmo_auth_gen_vec_auts(vec, &test_aud, _auts, _rand, _rand);
+ rc = osmo_auth_gen_vec_auts2(vec, &test_aud, _auts, _rand, _rand);
if (rc < 0) {
if (!auts_is_set)
fprintf(stderr, "error generating auth vector\n");
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 09:33:49 +0000