Security chip for replacing smartcard?

Frank-Christian Kruegel wrote:

> On 26 Jul 2006 23:56:35 -0700, "Matthias" <news@ingbh.de> wrote:
> >The iButtons seem to be very close to our requirements, but
> >unfortunately they have a case that does not allow soldering them on
> >the PCB. One could consider a kind of socket, but I do not think that
> >is the way we will choose.
>
> All iButtons are also available as chips. Look at:
>
> DS28E01-100 http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4766
> DS2432 http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2914

That's an even better pointer, thanks! This seems to be what I was
looking for.

If there are still other options I would like to know, though, to be
able to compare prices and capabilities.

Thanks,
Matthias

Matthias <news@ingbh.de> wrote:

> in our design we would like to replace a smartcard by a kind of
> security chip or security module. The chip has to provide:

> - unique ID / serial number
> - secure key management

This begs one question, and suggests one answer.

The question is: why on earth would you want to do that?

The answer is: you seem to be looking for a TPM.  That's exactly the
kind of chip you're after, and it's in the process of becoming a
standard part on PC mainboards.

-- 
Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de)
Even if all the snow were burnt, ashes would remain.

Hans-Bernhard Broeker wrote:

> Matthias <news@ingbh.de> wrote:
>
> > in our design we would like to replace a smartcard by a kind of
> > security chip or security module. The chip has to provide:
>
> > - unique ID / serial number
> > - secure key management
>
> This begs one question, and suggests one answer.
>
> The question is: why on earth would you want to do that?

To do what: Replacing the smart card or requesting those features?  ;-)

The answer to the first one is mainly "reducing total costs" (before
there is another question: to elaborate this I would have to go into
details I do not want to disclose here).

To answer the second one, I recommend the maxim application note 3675
(http://www.maxim-ic.com/appnotes.cfm/appnote_number/3675) where the
basic concept is described.


> The answer is: you seem to be looking for a TPM.  That's exactly the
> kind of chip you're after, and it's in the process of becoming a
> standard part on PC mainboards.

No. If a TPM was the most cost-efficient and easy-to-implement solution
for our requirements, then I would consider using a TPM. But as it
seems, that is not the case...

Regards,
Matthias

Matthias wrote:
> Frank-Christian Kruegel wrote:
>
> > On 26 Jul 2006 23:56:35 -0700, "Matthias" <news@ingbh.de> wrote:
> > >The iButtons seem to be very close to our requirements, but
> > >unfortunately they have a case that does not allow soldering them on
> > >the PCB. One could consider a kind of socket, but I do not think that
> > >is the way we will choose.
> >
> > All iButtons are also available as chips. Look at:
> >
> > DS28E01-100 http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4766
> > DS2432 http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2914
>
> That's an even better pointer, thanks! This seems to be what I was
> looking for.
>
> If there are still other options I would like to know, though, to be
> able to compare prices and capabilities.
>

>From this point, thank you very much, do your own research,
you lazy asshole.

You lazy f**king asshole. What a jerk!


> Thanks,
> Matthias