Cellular Network Infrastructure » IMSI Pseudonymization

02/26/2020

03:06 PM Feature #4400: Approach C: HLR decides and sends the entire next pseudo IMSI to SIM

Updated the README, that describes the whole process, with all the feedback above:
https://gerrit.osmocom.org/plug... osmith

12:38 PM Bug #4417 (New): Applet: LU counter should only increase on successful location update

With the current code, the LU counter seems to increase on every location update, no matter if successful or not. osmith

11:06 AM Feature #4416 (Resolved): find out whether/how SIM applet can invalidate TMSI

Patches added to invalidate the TMSI, TMSIGPRS, KC and KCGPRS.
I've verified with wireshark, that the SIM now dire... osmith

09:32 AM Feature #4416 (In Progress): find out whether/how SIM applet can invalidate TMSI

We can update "EFLOCI (Location Information)", which consists of (3GPP TS 31.102, 4.2.17):
> - Temporary Mobile... osmith

12:56 AM Feature #4416 (Resolved): find out whether/how SIM applet can invalidate TMSI

Even after a SIM REFRESH with SIM Init, the SIM still uses the previous TMSI.
Find out how the SIM applet can forget... neels

09:11 AM Feature #4412 (Resolved): SIM applet: add debug menu entry to change IMSI

> However, the readBinary call throws a "AC_NOT_FULFILLED" exception.
Resolved by adding an ... osmith

02/24/2020

11:41 AM Feature #4412 (In Progress): SIM applet: add debug menu entry to change IMSI

I've implemented a menu, and a submenu for "Change IMSI":... osmith

02/21/2020

08:22 PM Feature #4401: Proof of concept for counting Location Updates in SIM applet

On Fri, Feb 21, 2020 at 02:33:54PM +0000, osmith [REDMINE] wrote:
> I thought that I need to access the filesystem an... laforge

02:33 PM Feature #4401 (Resolved): Proof of concept for counting Location Updates in SIM applet

I thought that I need to access the filesystem and write it there (which had me confusing: where to write it exactly?... osmith

11:56 AM Feature #4401: Proof of concept for counting Location Updates in SIM applet

After testing the hello world example, I've modified it to display a message on every location update. This works! Th... osmith

07:10 AM Feature #4401 (In Progress): Proof of concept for counting Location Updates in SIM applet

osmith

02:48 PM Feature #4404: Research: Make sure that we can silently detach the IMSI

> How does a SIM/baseband behave when its IMSI is changed?
Let's add a menu entry that changes the IMSI to check t... osmith

02:48 PM Feature #4412 (Resolved): SIM applet: add debug menu entry to change IMSI

Before drafting the spec, we need to check how the baseband/SIM behave if the IMSI changes. Adding it to the menu of ... osmith