a problematic sim?

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Harald Welte laforge at gnumonks.org
Sun Dec 18 08:56:06 UTC 2011


Hi Lukas,

On Fri, Dec 16, 2011 at 09:51:20AM +0100, Lukas Kuzmiak wrote:
> I've generated some more data by putting in couple more osmo_hexdump()s.

thanks.

> But as I said yesterday, it seems some bytes from the actual data seems to
> be marked with ATR flag in the firmware itself and since then the data come
> somehow scrambled or shifted and parser can't put it together anymore.
> Correct me if I'm mistaken but from what I've observed the first message
> coming from USB always contains only ATR and has that ATR flag, I don't see
> how simtrace sw could parse ATR from data bytes.

yes, all the traffic is in your trace, it is simply a matter of not
detecting properly where the ATR / APDU boundary is.

> Let me know if this is sufficient somehow or you think the SIM will be
> better, I can mail you the sim even today if you think it'll help more than
> this trace.

I think the trace is fine, I just need to find some time to actually
look harder at the traces and the code.  I'm not sure when that will be,
things are quite crazy here right now :/

-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
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