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Feature #2475

XOR authentication not implemented

Added by laforge 8 months ago. Updated 17 days ago.

Status:
Stalled
Priority:
Low
Assignee:
fixeria
Category:
libosmogsm
Target version:
-
Start date:
08/31/2017
Due date:
% Done:

70%

Spec Reference:

Description

We implement COMP128v1, v2 and v3 as well as MILENAGE, but don't implement the XOR algorithm for 2G or 3G, as described in 3GPP TS 34.108 Section 8.1.2

XOR can be handy when testing against test equipment such as core/ran emulators, MS testers or the like.

0001-WIP-Add-support-for-XOR-authentication.patch Magnifier - WIP patch for XOR support (4.18 KB) daniel, 09/07/2017 03:22 PM

Related issues

Related to OsmoGSMTester - Support #2497: Set up SIM cards with auth algo other than XOR New 09/06/2017

History

#1 Updated by laforge 8 months ago

Daniel has an incomplete patch for this, please state branch name here to which this was pushed.

#3 Updated by daniel 4 months ago

  • Related to Support #2497: Set up SIM cards with auth algo other than XOR added

#4 Updated by fixeria about 1 month ago

  • Assignee set to fixeria
  • % Done changed from 0 to 40

#5 Updated by fixeria about 1 month ago

  • Status changed from New to Feedback
  • % Done changed from 40 to 70

I've uploaded a modified version: https://gerrit.osmocom.org/7310/
Comments are welcome ;)

#6 Updated by fixeria about 1 month ago

A sysmoUSIM-SJS1 was programmed to use XOR auth:

$ sysmo-usim-tool.sjs1.py -a ADM --classic -T XOR-2G:XOR-3G
$ sysmo-usim-tool.sjs1.py -a ADM -K daf8d6975b9e1404e359bfcf0c93d55c

All attempts to perform manual XOR authentication are not successful:

$ ./osmo-sim-auth.py -s -r e9a9c0710597421f4363e45a2da051f9
Testing SIM card with IMSI 901700000000001

GSM Authentication
Traceback (most recent call last):
  File "./osmo-sim-auth.py", line 125, in <module>
    handle_sim(options, rand_bin)
  File "./osmo-sim-auth.py", line 75, in handle_sim
    print "SRES:\t%s" % b2a_hex(byteToString(ret[0]))
TypeError: 'NoneType' object has no attribute '__getitem__'

$ ./osmo-sim-auth.py -s -r 5635694866c671627c3bb4135e2bf7dc
Testing SIM card with IMSI 901700000000001

GSM Authentication
Traceback (most recent call last):
  File "./osmo-sim-auth.py", line 125, in <module>
    handle_sim(options, rand_bin)
  File "./osmo-sim-auth.py", line 75, in handle_sim
    print "SRES:\t%s" % b2a_hex(byteToString(ret[0]))
TypeError: 'NoneType' object has no attribute '__getitem__'

Meanwhile, the tool works fine with comp128v123... Any ideas?

#7 Updated by laforge about 1 month ago

You need to generate an APDU trace and look at what's happening at the protocol level.

#8 Updated by fixeria about 1 month ago 

GSM Authentication
[DBG] ['INTERNAL AUTHENTICATE
  apdu: A0 88 00 00 10 56 35 69 48 66 C6 71 62 7C 3B B4 13 5E 2B F7 DC',
  'sw1, sw2: 6F 00 - checking error: no precise diagnosis', (111, 0), []]

Quick Googling:

6F 00 Command aborted - more exact diagnosis not possible (e.g., operating system error).

#9 Updated by fixeria 17 days ago

  • Status changed from Feedback to Stalled

Any ideas are welcome...

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