1 files changed, 77 insertions, 0 deletions
diff --git a/tests/auth/xor2g_test.c b/tests/auth/xor2g_test.c
new file mode 100644
index 00000000..82ab25ac
--- /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);
+}