A5/1 Encryption Enabled - Programmable SIM unable to camp

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Neels Hofmeyr nhofmeyr at sysmocom.de
Wed Feb 28 15:07:47 UTC 2018


Actually, Ron,

there is no bug here. I was quite sure of my SIM configuration, but in fact it
was programmed to use COMP128v3, not v1, and hence I got a differing SRES upon
Auth Response.

Double check that your SIM/USIM is configured to use COMP128v1 for 2G!
For example, try to configure COMP128v3 in the HLR and see if that helps.

I've rejected issue #3017 now. It all works. (Feels good to be able to say that
for a change.)

~N


-- 
- Neels Hofmeyr <nhofmeyr at sysmocom.de>          http://www.sysmocom.de/
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