On Tue, Mar 8, 2011 at 3:28 PM, Henk henk.vergonet@gmail.com wrote:
Actually comp128-2 has a 54bit Kc it seems.
Have you observed a COMP128-2 implementation returning a 54bit long Kc?, or have you heard about this from somebody else? Can you please disclose more about the SIM model and the operator running this A3/A8 implementation?
One more weakened key derivation function (after the first version) would be interesting per se. Still, it would be even more interesting to give a closer look at this obscure cipher we carry in our pockets...
A programmable SIM with COMP128v2 would be valuable for a project I'd like to contribute.
Cheers,
alfonso
246tnt@gmail.comschreef:
On a related note, does anyone have any SIMs for sale, implementing A3/A8 with COMP128-2, still to be provisioned with its Ki or already provisioned with a known Ki?
Comp128v2 ? I don't think so ...
All the cards we have use COMP128 v1, the spec for v2 have not been leaked (yet ?).
For those, you best bet is ebay, search for "super sim" / 16-in-1 / "magic sim" things like that. Dealextreme also has some.
If you need more quantity, you can often contact those vendor directly and they'll be happy to send you a bunch. I myself bought a lot directly emailing the guys at magicsim.com
Cheers,
Sylvain
--