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Harald Welte laforge at gnumonks.orgOn Mon, Aug 03, 2009 at 10:56:08PM +0200, Johannes Schmitz wrote:
> Am Montag, den 03.08.2009, 12:59 +0200 schrieb Harald Welte:
> > A3/A8 is either proprietary by the operator, or comp128v2 or v3 (both are
> > officially closed, but it's safe to assume them to be known).
> >
> > As Dieter has indicated in earlier mails, you can get SIM's that have comp128v1
> > or XOR as A3/A8 and which allow you to set the Ki of the SIM. With those
> > SIM's, or an emulated SIM you can test any implementation of encryption for
> > OpenBSC, once it has been done.
>
> At this point I have got one general question, maybe also towards
> Dieter:
> How can A3/A8 be proprietary by any operator? How does international
> roaming work then if there is no standardized algorithm?
A3/A8 is performed between your SIM and the HLR/AUC of your home network,
no matter whether you're roaming or not.
--
- Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/
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