T=0 and T=1 sniffer

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"Roger Jardi Cedó" roger.jardi at urv.cat
Wed Nov 14 10:59:30 UTC 2012


Hi,

> Does your smart card not support T=0, or is the communication 
> you want to sniff using T=1?
> AFAIK T=0 is the most used and supported protocol. T=1 is mainly 
> if you want to have "high speed" communication.

I'm interested on both modes. I've SC working in T=0 and other in T=1. On my development environment is common the use of T=1.
I hope that Harald can solve that...I'm strong interested.

Thank you very much.


----- Missatge original -----
De: Kevin Redon <ml at mail.tsaitgaist.info>
Data: Dimecres, Novembre 14, 2012 10:24
Assumpte: Re: T=0 and T=1 sniffer
Per a: simtrace <simtrace at lists.osmocom.org>

> Hi,
> 
> Excerpts from Roger Jardi Cedó's message of Tue Nov 13 23:40:48 
> +0100 2012:
> > Hello,
> > 
> > I'm sorry, I wanted to refer to ISO 7816-3 smart card (T=0 and 
> T=1) like Java Card.
> > 
> > > no, not any. It only supports T=0 and T=1 (with few adjustments).
> > > This protocols are defined in IEC/ISO-7816 part 3.
> > > Other Smart cards can use other protocols (I2C, SPI, …). It may 
> > > be possible to be compatible with it, but these are not 
> > > supported by the software.
> > 
> > So, what kind of adjustments are these? Could you please 
> detail them?
> 
> I don't know exactly, as I never tested.
> The hardware is fully compatible.
> T=0 and T=1 are quite similar, and I don't know if any 
> adjustment is required on the firmware.
> Maybe the firmware only needs to tell the micro-controller to 
> switch to T=1, and then it works flawlessly.
> Harald Welte would be able to answer this question in more 
> details, but he is not online before next week.
> 
> Does your smart card not support T=0, or is the communication 
> you want to sniff using T=1?
> AFAIK T=0 is the most used and supported protocol. T=1 is mainly 
> if you want to have "high speed" communication.
> 
> kevin
> 

Roger Jardí

Personal de Suport a la Recerca
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Universitat Rovira i Virgili

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