aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorNeels Hofmeyr <nhofmeyr@sysmocom.de>2017-03-14 02:31:41 +0100
committerNeels Hofmeyr <nhofmeyr@sysmocom.de>2017-03-15 13:46:58 +0000
commit6761c3f6268909d2bbb7c7e3dd85addc8004671e (patch)
tree42145c8229d5537d92cc54c07ef14375b3f1a7c4
parent49daf56319d7b42919aaf02191be80fd1ca31ca0 (diff)
milenage_test: cosmetic: verify AUTS in comments
In a comment and by code #if'd away, illustrate that the AUTS used in the unit test is accurate. Related: OS#1968 Change-Id: Iefeaaf33570f8e40245fdf9b810390ec61cfc7e0
-rw-r--r--tests/auth/milenage_test.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/tests/auth/milenage_test.c b/tests/auth/milenage_test.c
index b4c2c79b..2bd3cf20 100644
--- a/tests/auth/milenage_test.c
+++ b/tests/auth/milenage_test.c
@@ -63,6 +63,15 @@ static int opc_test(const struct osmo_sub_auth_data *aud)
return rc;
}
+#define RECALC_AUTS 0
+#if RECALC_AUTS
+typedef uint8_t u8;
+extern int milenage_f2345(const u8 *opc, const u8 *k, const u8 *_rand,
+ u8 *res, u8 *ck, u8 *ik, u8 *ak, u8 *akstar);
+extern int milenage_f1(const u8 *opc, const u8 *k, const u8 *_rand,
+ const u8 *sqn, const u8 *amf, u8 *mac_a, u8 *mac_s);
+#endif
+
int main(int argc, char **argv)
{
struct osmo_auth_vector _vec;
@@ -92,6 +101,53 @@ int main(int argc, char **argv)
dump_auth_vec(vec);
+ /* The USIM generates an AUTS to tell us it is at SQN == 31:
+ *
+ * SQN_MS = 00000000001f
+ *
+ * AUTS = Conc(SQN_MS) || MAC-S
+ * Conc(SQN_MS) = SQN_MS ⊕ f5*[K](RAND)
+ * MAC-S = f1*[K] (SQN MS || RAND || AMF)
+ *
+ * K = 000102030405060708090a0b0c0d0e0f
+ * RAND = 00000000000000000000000000000000
+ *
+ * f5*--> Conc(SQN_MS) = SQN_MS ^ f5*(K,RAND)
+ * = 00000000001f ^ 8711a0ec9e09
+ * = 8711a0ec9e16
+ * AMF = 0000 (TS 33.102 v7.0.0, 6.3.3)
+ * MAC-S = f1*[K] (SQN MS || RAND || AMF)
+ * = f1*[K] (00000000001f || 00000000000000000000000000000000 || 0000)
+ * = 37df17f80b384ee4
+ *
+ * AUTS = 8711a0ec9e16 || 37df17f80b384ee4
+ */
+#if RECALC_AUTS
+ uint8_t ak[6];
+ uint8_t akstar[6];
+ uint8_t opc[16];
+ uint8_t k[16];
+ uint8_t rand[16];
+ osmo_hexparse("000102030405060708090a0b0c0d0e0f", k, sizeof(k));
+ osmo_hexparse("000102030405060708090a0b0c0d0e0f", opc, sizeof(opc));
+ osmo_hexparse("00000000000000000000000000000000", rand, sizeof(rand));
+ milenage_f2345(opc, k, rand, NULL, NULL, NULL, ak, akstar);
+ printf("ak = %s\n", osmo_hexdump_nospc(ak, sizeof(ak)));
+ printf("akstar = %s\n", osmo_hexdump_nospc(akstar, sizeof(akstar)));
+
+ uint8_t sqn_ms[6] = { 0, 0, 0, 0, 0, 31 };
+ uint8_t amf[2] = {};
+ uint8_t mac_s[8];
+ milenage_f1(opc, k, rand, sqn_ms, amf, NULL, mac_s);
+ printf("mac_s = %s\n", osmo_hexdump_nospc(mac_s, sizeof(mac_s)));
+ /* verify valid AUTS resulting in SQN 31 with:
+ osmo-auc-gen -3 -a milenage -k 000102030405060708090a0b0c0d0e0f \
+ -o 000102030405060708090a0b0c0d0e0f \
+ -r 00000000000000000000000000000000 \
+ -A 8711a0ec9e1637df17f80b384ee4
+ */
+#endif
+
const uint8_t auts[14] = { 0x87, 0x11, 0xa0, 0xec, 0x9e, 0x16, 0x37, 0xdf,
0x17, 0xf8, 0x0b, 0x38, 0x4e, 0xe4 };