Commit Graph

241 Commits

Author SHA1 Message Date
Pedro Alvarez 179aeddfa2 Added encryption of security mode command and attach accept again. Attach is working with encryption. 2019-01-11 18:13:29 +00:00
Pedro Alvarez 997c24c099 Added config of cipher_algo and integ_algo initialization in NAS class. 2018-12-18 18:27:31 +00:00
Pedro Alvarez 5eacdd5418 Fixed compilation issues. Attach failing with COTS UE. 2018-12-18 16:48:25 +00:00
Pedro Alvarez 31a25067f5 Merging David Ruprecth's mme_msg_encryption branch into next. Not compiling. 2018-12-18 12:03:52 +00:00
David Rupprecht c480e57721 Config based security algorithm selection 2018-11-19 15:34:57 +01:00
David Rupprecht e547883a8f Wrapper functions for integrity generate 2018-11-18 20:30:22 +01:00
David Rupprecht 7eef2c1c4b start with decryption function 2018-11-15 23:02:30 +01:00
Andre Puschmann 23836a8ab3 Merge branch 'next' into nas_cleanup 2018-10-22 11:26:00 +02:00
Pedro Alvarez 3cddad79cc Adding ability to configure names of TUN interfaces. (#277)
* added config option for tun dev names vs fixed names added config option for M1-U interface addr

* Added options to sgi_mb tun name.

* Added some comments to mbms.conf.example

* Added some comments to example configs to explain the new values.
2018-10-05 11:12:31 +02:00
Pedro Alvarez 35ca9ffd34 Adding TTL option 2018-10-04 14:44:26 +02:00
Pedro Alvarez 3ecacdf3a6 Adding selection of local interface at the MBMS-GW. 2018-10-04 14:44:26 +02:00
Pedro Alvarez 8dc029cc47 Merging next into NAS cleanup. 2018-09-25 18:56:03 +01:00
Andre Puschmann 860d8af911 Merge branch 'master' into next 2018-09-24 15:50:10 +02:00
Zhe Huang 8b526e1c20 Fix SQN incrementation arithmetic (#212)
* Fix SQN incrementation arithmetic

Current implementation of increment_sqn function increments the 48 bits
SQN directly by 1 which is incorrect according to 3GPP TS 33.102 version
11.5.1 Annex C. This bug causes commercial UEs to report AUTHENTICATION
FAILURE EMM cause #21 "synch failure" when SQN is out of sync.

According to 3GPP TS 33.102 version 11.5.1 Annex C, 48 bits SQN consists
of 43 bits SEQ and 5 bits IND parts where SEQ are incremented during
generation of authentication vector or resync procedure. A
new IND value is also assigned when an authentication vector is
generated. However, resync procedure will use the same IND value.

This patch implements the increment_sqn function according to 3GPP TS
33.102 version 11.5.1 Annex C. A new function increment_seq_after_resync
is added to handle the special case of SQN arithmetic during SQN
resynchronization.

This patch is tested with two comercial UEs (Oneplus One and Oneplus 3T).

* Fix the maximum value of SEQ value to be 2^43-1

The SEQ value is 43 bits long and previous maximum value has a typo (one
extra F) which allows SEQ value to be 2^47-1. This patch corrects the typo.
2018-09-24 11:28:07 +02:00
Pedro Alvarez 9350e03810 Changed detach request and tracking area update request to nas.cc 2018-08-29 17:47:34 +01:00
Pedro Alvarez a9e5b3b8e9 Changed service request to nas.cc 2018-08-29 14:52:09 +01:00
Pedro Alvarez 3337f21ffa Added handle GUTI attach from known UE again. 2018-08-28 15:29:26 +01:00
Pedro Alvarez 0d80ae795b Added IMSI attach from unknown UE as a static function. 2018-08-27 19:17:23 +01:00
Pedro Alvarez 860e1b5491 Changing Handling of initial UE NAS messages to use static methods. Handling of unknown GUTI attach request should be ok. 2018-08-27 16:06:18 +01:00
Pedro Alvarez 9e808ff968 Starting to handle NAS initial UE messages as static methods of the nas class. 2018-08-24 18:15:06 +01:00
Pedro Alvarez e3286897ce Changed the rest of the nas handling to use send_downlink_nas_transport. 2018-08-22 16:59:40 +01:00
Pedro Alvarez f1d30c7f23 Changed handle guti_attach_from_known_ue and unknown_ue to use send_downstream_nas_message. 2018-08-22 15:00:01 +01:00
Pedro Alvarez dd725be60c Changed pack identity request. 2018-08-21 18:29:28 +01:00
Pedro Alvarez 65a5139751 Fixed mistake in downlink nas transport. Changing authication request to use downlink_nas_transport. 2018-08-21 17:51:00 +01:00
Pedro Alvarez 21c34b9ce5 Changing security mode complete to use downlink nas transport 2018-08-21 16:05:08 +01:00
Pedro Alvarez 93222f582c Changed authentication response to use downlink_nas_transport(). 2018-08-21 15:17:08 +01:00
Pedro Alvarez 3073ab6822 Changed dettach request to use downlink nas transport. 2018-08-21 14:11:28 +01:00
Pedro Alvarez 749e84315a Starting to add send_downlink_nas_transport helper function. 2018-08-21 12:57:23 +01:00
Pedro Alvarez 872f7adc49 Added find imsi from TMSI helper function. 2018-08-20 17:59:50 +01:00
Pedro Alvarez fa0c8d5995 Moved most of IMSI attach request into nas.cc. 2018-08-20 16:48:16 +01:00
Pedro Alvarez f6b8982939 Moved most of the GUTI attach to nas.cc. 2018-08-20 15:48:23 +01:00
Pedro Alvarez c518d3fde3 Starting to move inital UE messages to nas.cc. Breaking up attach request handling into smaller functions. 2018-08-16 17:45:39 +01:00
Pedro Alvarez 55675eb532 Fixed bug in setting MCC and MNC in attach accept. Attach seems to be working again. 2018-08-15 18:13:36 +01:00
Pedro Alvarez 7c53330bec Fixed NAS initialization. Attach request seems to work again now. 2018-08-14 13:59:05 +01:00
Pedro Alvarez 4ba777c9c3 Added nas log. Fixed gen_auth_info_anwser. Authentication is working again. 2018-07-24 18:38:16 +01:00
Pedro Alvarez de8679b536 Continuing to cleanup. Starting to compile again. 2018-07-23 15:30:19 +01:00
Pedro Alvarez 406d198eac Cleaning up nas.cc 2018-07-23 12:38:40 +01:00
Pedro Alvarez f03967776a Continuing to clean nas.cc 2018-07-20 19:50:46 +01:00
Pedro Alvarez 6ef3124fc9 Fixed up release ue ctx command. 2018-07-20 14:54:03 +01:00
Pedro Alvarez b25c12a084 Fixing nas.cc 2018-07-18 19:25:59 +01:00
Pedro Alvarez 85672d4a3f Fixing up s1ap.cc 2018-07-18 17:25:37 +01:00
Pedro Alvarez d8f1b3c88d Moved uplink nas messages to nas.cc. s1ap_nas_transport is compiling. 2018-07-17 18:33:10 +01:00
Pedro Alvarez 1bad88a432 Changing integrity functions in nas.cc 2018-07-16 19:41:27 +01:00
Pedro Alvarez 5fd337a7ad Continue to move uplink NAS into nas.cc. 2018-07-16 19:05:53 +01:00
Pedro Alvarez 4d40e9ca2d Temporarilly changing ESM state back to previous definition. 2018-07-16 15:21:03 +01:00
Pedro Alvarez c1eff4ce73 Changing pack accept 2018-07-16 14:55:36 +01:00
Pedro Alvarez 3663d59920 Starting to add s1ap_interface_gtpc and s1ap_interface_nas. Adapting send initial context setup request accordingly. 2018-07-16 13:50:12 +01:00
Pedro Alvarez f33fcf65bf Fixing up S1AP context management procedures to use the new class. 2018-07-13 18:31:05 +01:00
Pedro Alvarez 4c164acbc3 Moving many of the functions fron s1ap_nas_transport to it's own NAS class. 2018-07-13 17:28:20 +01:00
Pedro Alvarez 41a5788cc7 Adding nas.h 2018-07-13 15:27:38 +01:00