New unit test for XOR-2G authentication
Let's test if the XOR-2G algorithm does what it's supposed to do.
Change-Id: I7014258751624ff18c51912b6348c3cd876bb23f
diff --git a/tests/auth/xor2g_test.c b/tests/auth/xor2g_test.c
new file mode 100644
index 0000000..82ab25a
--- /dev/null
+++ b/tests/auth/xor2g_test.c
@@ -0,0 +1,77 @@
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <inttypes.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)));
+ /* According to 3GPP TS 55.205 Sec. 4 the GSM-MILENAGE output is limited to 64 bits.
+ According to 3GPP TS 33.102 Annex. B5 in UMTS security context Kc can be 128 bits.
+ Here we test the former, so make sure we only print interesting Kc bits. */
+ printf("Kc:\t%s\n", osmo_hexdump(vec->kc, OSMO_A5_MAX_KEY_LEN_BYTES/2));
+ }
+}
+
+static struct osmo_sub_auth_data test_aud = {
+ .type = OSMO_AUTH_TYPE_GSM,
+ .algo = OSMO_AUTH_ALG_XOR_2G,
+ .u.gsm = {
+ .ki = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
+ },
+};
+
+int main(int argc, char **argv)
+{
+ struct osmo_auth_vector _vec;
+ struct osmo_auth_vector *vec = &_vec;
+ uint8_t _rand[16];
+ int rc;
+
+#if 0
+ srand(time(NULL));
+ *(uint32_t *)&_rand[0] = rand();
+ *(uint32_t *)(&_rand[4]) = rand();
+ *(uint32_t *)(&_rand[8]) = rand();
+ *(uint32_t *)(&_rand[12]) = rand();
+#else
+ memset(_rand, 0, sizeof(_rand));
+#endif
+ 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);
+
+ /* test once more with non-zero RAND to see it show in result */
+ for (int i = 0; i < sizeof(_rand); i++)
+ _rand[i] = i << 4;
+
+ 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);
+
+ exit(0);
+}