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

02:31 PM Revision 0ee12879 (imsi-pseudo): README.md: use headlines

osmith

02:20 PM Revision 5e62dbac (imsi-pseudo): docs: update to feedback from Neels

Most importantly, there is no ACK SMS anymore, because the next LU is
the implicit ACK. While at it, I've filled in t... 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

11:02 AM Revision 15c3bfb4 (imsi-pseudo): Invalidate Kc, too

osmith

10:47 AM Revision 134f41f5 (imsi-pseudo): Invalidate TMSI, P-TMSI after changing IMSI

Now the ME doesn't try to send the TMSI anymore in the next Location
Updating Request, it directly sends the IMSI. osmith

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

01:02 AM Revision 4ac43a2f (imsi-pseudo): add SIM REFRESH command after IMSI change

Neels Hofmeyr

02/25/2020

02:43 AM Revision 872140db (imsi-pseudo): add make reflash

Neels Hofmeyr

02:41 AM Revision ff5364a5 (imsi-pseudo): Makefile: add some .PHONY

Neels Hofmeyr

02:39 AM Revision 7c5e973e (imsi-pseudo): add 'make list'

Neels Hofmeyr

02:39 AM Revision b5ca3124 (imsi-pseudo): Test: Bytes.toStr()

Neels Hofmeyr

02:39 AM Revision 483f5a4f (imsi-pseudo): refactor the menu, the mi2str() implementation, and tests

Instead of a sub-menu for changing the IMSI, just offer a dialog with the
current IMSI pre-filled in an edit field.
"... Neels Hofmeyr

02:36 AM Revision 26256941 (imsi-pseudo): make writeIMSI() safe against invalid length

Neels Hofmeyr

02:36 AM Revision cf04db03 (imsi-pseudo): drop unnecessary 'new byte[]' before {...}

Neels Hofmeyr

02:36 AM Revision 9a3428e4 (imsi-pseudo): prompt(): add prefillVal arg

Neels Hofmeyr

02:36 AM Revision ad4531a4 (imsi-pseudo): add Bytes.java

Neels Hofmeyr

02:36 AM Revision 583bfecc (imsi-pseudo): eliminate itemCount param from showMenu()

Neels Hofmeyr

02:36 AM Revision 41b6f543 (imsi-pseudo): write user entered IMSI to SIM

Neels Hofmeyr

02:34 AM Revision b86190c9 (imsi-pseudo): add .gitignore

Neels Hofmeyr

02:34 AM Revision d20f93a2 (imsi-pseudo): add MobileIdentity as separate class, add test

Use fixed applet-project.mk to put Mobile Identity implementations in a
separate class MobileIdentity.java.
That all... Neels Hofmeyr