tree 25489e12e63bd33438688ff33c64b8c5b4cda460
parent 7554fd1b5e49c809dbb95967cfc6f146e15f505a
author Neels Hofmeyr <neels@hofmeyr.de> 1524418181 +0200
committer Neels Hofmeyr <neels@hofmeyr.de> 1525131133 +0200

GERAN: allow GSM SRES on UMTS AKA challenge

Store the established security context type (GSM or UMTS) instead of the
boolean flag is_authenticated. Provide the previous boolean query with thin
sgsn_mm_ctx_is_authenticated() function.

Knowing which security context was established will be necessary for OS#3224,
i.e. using the proper ciphering key, which is not yet tested properly, and
probably not correct at this stage.

This change will make new SGSN_Tests.TC_attach_umts_aka_gsm_sres pass.

Related: OS#3193 OS#3224
Change-Id: I36807bad3bc55c0030d4f09cb2c369714f24bec7