1 files changed, 0 insertions, 115 deletions
diff --git a/openbsc/src/libmsc/auth.c b/openbsc/src/libmsc/auth.c
index 19def1ec1..9064ce6c4 100644
--- a/openbsc/src/libmsc/auth.c
+++ b/openbsc/src/libmsc/auth.c
@@ -40,118 +40,3 @@ const struct value_string auth_action_names[] = {
 	OSMO_VALUE_STRING(AUTH_DO_AUTH),
 	{ 0, NULL }
 };
-
-static int
-_use_xor(struct gsm_auth_info *ainfo, struct gsm_auth_tuple *atuple)
-{
-	int i, l = ainfo->a3a8_ki_len;
-
-	if ((l > A38_XOR_MAX_KEY_LEN) || (l < A38_XOR_MIN_KEY_LEN)) {
-		LOGP(DMM, LOGL_ERROR, "Invalid XOR key (len=%d) %s\n",
-			ainfo->a3a8_ki_len,
-			osmo_hexdump(ainfo->a3a8_ki, ainfo->a3a8_ki_len));
-		return -1;
-	}
-
-	for (i=0; i<4; i++)
-		atuple->vec.sres[i] = atuple->vec.rand[i] ^ ainfo->a3a8_ki[i];
-	for (i=4; i<12; i++)
-		atuple->vec.kc[i-4] = atuple->vec.rand[i] ^ ainfo->a3a8_ki[i];
-
-	return 0;
-}
-
-static int
-_use_comp128_v1(struct gsm_auth_info *ainfo, struct gsm_auth_tuple *atuple)
-{
-	if (ainfo->a3a8_ki_len != A38_COMP128_KEY_LEN) {
-		LOGP(DMM, LOGL_ERROR, "Invalid COMP128v1 key (len=%d) %s\n",
-			ainfo->a3a8_ki_len,
-			osmo_hexdump(ainfo->a3a8_ki, ainfo->a3a8_ki_len));
-		return -1;
-	}
-
-	comp128(ainfo->a3a8_ki, atuple->vec.rand, atuple->vec.sres, atuple->vec.kc);
-
-	return 0;
-}
-
-/* Return values 
- *  -1 -> Internal error
- *   0 -> Not available
- *   1 -> Tuple returned, need to do auth, then enable cipher
- *   2 -> Tuple returned, need to enable cipher
- */
-int auth_get_tuple_for_subscr(struct gsm_auth_tuple *atuple,
-                              struct gsm_subscriber *subscr, int key_seq)
-{
-	struct gsm_auth_info ainfo;
-	int rc;
-
-	/* Get subscriber info (if any) */
-	rc = db_get_authinfo_for_subscr(&ainfo, subscr);
-	if (rc < 0) {
-		LOGP(DMM, LOGL_NOTICE,
-		     "No retrievable Ki for subscriber %s, skipping auth\n",
-		     subscr_name(subscr));
-		return rc == -ENOENT ? AUTH_NOT_AVAIL : AUTH_ERROR;
-	}
-
-	/* If possible, re-use the last tuple and skip auth */
-	rc = db_get_lastauthtuple_for_subscr(atuple, subscr);
-	if ((rc == 0) &&
-	    (key_seq != GSM_KEY_SEQ_INVAL) &&
-	    (key_seq == atuple->key_seq) &&
-	    (atuple->use_count < 3))
-	{
-		atuple->use_count++;
-		db_sync_lastauthtuple_for_subscr(atuple, subscr);
-		DEBUGP(DMM, "Auth tuple use < 3, just doing ciphering\n");
-		return AUTH_DO_CIPH;
-	}
-
-	/* Generate a new one */
-	if (rc != 0) {
-		/* If db_get_lastauthtuple_for_subscr() returned nothing, make
-		 * sure the atuple memory is initialized to zero and thus start
-		 * off with key_seq = 0. */
-		memset(atuple, 0, sizeof(*atuple));
-	} else {
-		/* If db_get_lastauthtuple_for_subscr() returned a previous
-		 * tuple, use the next key_seq. */
-		atuple->key_seq = (atuple->key_seq + 1) % 7;
-	}
-	atuple->use_count = 1;
-
-	if (RAND_bytes(atuple->vec.rand, sizeof(atuple->vec.rand)) != 1) {
-		LOGP(DMM, LOGL_NOTICE, "RAND_bytes failed, can't generate new auth tuple\n");
-		return AUTH_ERROR;
-	}
-
-	switch (ainfo.auth_algo) {
-	case AUTH_ALGO_NONE:
-		DEBUGP(DMM, "No authentication for subscriber\n");
-		return AUTH_NOT_AVAIL;
-
-	case AUTH_ALGO_XOR:
-		if (_use_xor(&ainfo, atuple))
-			return AUTH_NOT_AVAIL;
-		break;
-
-	case AUTH_ALGO_COMP128v1:
-		if (_use_comp128_v1(&ainfo, atuple))
-			return AUTH_NOT_AVAIL;
-		break;
-
-	default:
-		DEBUGP(DMM, "Unsupported auth type algo_id=%d\n",
-			ainfo.auth_algo);
-		return AUTH_NOT_AVAIL;
-	}
-
-        db_sync_lastauthtuple_for_subscr(atuple, subscr);
-
-	DEBUGP(DMM, "Need to do authentication and ciphering\n");
-	return AUTH_DO_AUTH_THEN_CIPH;
-}
-