Fwd: Do OpenPGP cards support T=0?

[Sébastien Lorquet]

Can someone post the ATR of the failing card?

Regards

PS: a "should" is not a mandatory requirement.

On Sun, Mar 6, 2011 at 7:48 PM, Grant Olson <kgo at grant-olson.net> wrote:

> On 03/06/2011 08:13 AM, Achim Pietig wrote:
> > Hi,
> >
> > the OpenPGP smart card application is designed to run under T=0 or T=1,
> so it is possible to add the application for e.g. on a GSM card.
> >
> > The Zeitcontrol implementation supports T=1 only, because T=0 does not
> support Extended Length and it makes the development much more complex.
> >
> > An ISO compliant smart card shows all supported protocols in the ATR, the
> ZC card shows T=1 only. A reader should detect this automatically.
> > It is normally not possible to run a not announced protocol.
> >
>
> Thanks for all the info.  I suspected the ATR had the info, but the only
> public doc I could find explaining the ATR format was really difficult
> to understand.
>
> If anyone has a link to a decent doc, it would be greatly appreciated.
>
> --
> -Grant
>
> "Look around! Can you construct some sort of rudimentary lathe?"
>
>
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