[fprint] 147e:2020 Upek TouchChip Fingerprint Coprocessor

[Andrea Oliveri]

Hello,
I have a Thinkpad T430 with this chip.
I tried to develop a driver for it but i stoped becouse the
communication between the pc and the chip is encrypted. After some
initial message (like "Ciao") the chip (i think) sends to pc a random
message and the pc crypts this message and repost it to the chip. The
message is different whenever the communication is opened.
The easier solution is to develop a intermediate layer between libfprint
and the proprietary library.... 

> Hi there,
> 
> Have you seen this?
> 
> http://karuppuswamy.com/wordpress/2010/07/22/how-to-get-fingerprint-reader-working-in-fedora-linux-upek-147e1000-in-this-case/
> 
> Can you maybe put these changes into the repository?
> 
> I'm new to this list and totally unexperienced in Driver development,
> and am too busy to contribute anything, but I can say that having the
> 147e:2020 I tried to apply the same trick for the 2020, naively
> thinking that their communication with the drivers are close enough.
> But unfortunately it didn't work.
> 
> With kind regards,
> Cyril
> 
> 
> On 12/11/12 14:22, Franck Routier (perso) wrote:
> 
> > Subject has also been discussed a bit earlier on this list. See: 
> > 
> > http://lists.freedesktop.org/archives/fprint/2012-July/000168.html 
> > 
> > and 
> > 
> > http://lists.freedesktop.org/archives/fprint/2012-August/000175.html 
> > 
> > 
> > Franck 
> > 
> > Le 12/11/2012 13:31, Vasily Khoruzhick a écrit : 
> > > On Mon, Nov 12, 2012 at 3:29 PM, Jason A. Donenfeld
> > > <Jason at zx2c4.com> wrote: 
> > > > On Mon, Nov 12, 2012 at 1:28 PM, Vasily Khoruzhick
> > > > <anarsoul at gmail.com> wrote: 
> > > > > Maybe it can be handled via upeke2. I just hope that it's
> > > > > simple 
> > > > > imaging device without on-board biometric 
> > > > > co-processor. 
> > > > [see subject line] 
> > > Well, who knows... 
> > > 
> > > Regards 
> > > Vasily 
> > > _______________________________________________ 
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> > > fprint at lists.freedesktop.org 
> > > http://lists.freedesktop.org/mailman/listinfo/fprint 
> > 
> > 
> > 
> > 
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