On 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(a)gnumonks.org>
http://laforge.gnumonks.org/
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