> 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
Reply by Matthias●August 1, 20062006-08-01
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
Reply by Hans-Bernhard Broeker●July 28, 20062006-07-28
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.
Reply by Matthias●July 28, 20062006-07-28
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
Reply by Frank-Christian Kruegel●July 27, 20062006-07-27
On 26 Jul 2006 23:56:35 -0700, "Matthias" <news@ingbh.de> wrote:
>> > Would an iButton be any use?
>> > http://www.maxim-ic.com/products/ibutton/products/ibuttons.cfm#secure
>[...]
>>
>> Maxim makes a wide ranging line of the type of products you appear to
>> want.
>
>Thanks, that was a good pointer.
>
>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.
> 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.
>
>PeteS wrote:
>
>> FreeRTOS.org 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:
>[...]
>> >
>> > Would an iButton be any use?
>> >
>[...]
>>
>> Maxim makes a wide ranging line of the type of products you appear to
>> want.
>
>Thanks, that was a good pointer.
>
>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.
>
>The other secure micros (DS5250 etc) would be fine if they had a fixed
>unique ID.
>
>So the search continues...
>
>Thanks,
>Matthias
>
>
> FreeRTOS.org 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:
>
> Maxim makes a wide ranging line of the type of products you appear to
> want.
Thanks, that was a good pointer.
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.
The other secure micros (DS5250 etc) would be fine if they had a fixed
unique ID.
So the search continues...
Thanks,
Matthias
Reply by larwe●July 26, 20062006-07-26
linnix wrote:
> A secured micro can easily satisfy your requirements.
A SECURE micro is not the same thing as a SECURED micro. Unless the
part is specifically designed for secure storage, you can't say it's
going to satisfy requirements.
> The best security is not to publize the implementations; therefore, you
> will find very little information on the best.
The best security is one where complete publication of implementation
details took place some time ago, and nobody has detected significant
security holes.
Reply by PeteS●July 26, 20062006-07-26
FreeRTOS.org wrote:
> >
> > Hi,
> >
> > 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
> >
> > The idea is to store data on the device in a way that they cannot be
> > read (hence encryption) or copied to a similar device (hence unique ID)
> > without the particular security chip being involved.
> > The actual data are some kB only, so if there is internal persistent
> > memory on the security chip it cold be utilized, but it is not a
> > requirement. External flash memory or EEPROM is sufficient. The memory
> > does not need to be controlled by the security chip, since on the
> > device there is a powerful microcontroller that can control the chip
> > and the memory as well.
> >
> > So far I did not find any useful information what chip could be used
> > for this.
> >
> > Any ideas or hints?
> >
> > TIA,
> > Matthias
>
>
> Would an iButton be any use?
> http://www.maxim-ic.com/products/ibutton/products/ibuttons.cfm#secure
>
> Regards,
> Richard.
>
> http://www.FreeRTOS.org
> for Cortex-M3, ARM7, ARM9, HCS12, H8S, MSP430
> Microblaze, Coldfire, AVR, x86, 8051 & PIC18 * * * *
Maxim makes a wide ranging line of the type of products you appear to
want.
The only issue I have with Maxim is - it's Maxim. They still kill me on
lead times and delivery.
Cheers
PeteS