Re: RNG in a Smart Card

Mike Rosing (eresrch@msn.fullfeed.com)
Mon, 27 Jul 1998 08:49:14 -0500 (CDT)

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On Mon, 27 Jul 1998, Werner Koch wrote:

> What about Dallas Semiconductor's iButtons; afaik this more than just
> a silicon die?

I was wondering too. I'm looking in their data book and I don't see
anything about RNG's. It's mostly an ID system, they use a laser to burn
in an ID code into each button. They make a big deal about each button
being unique, not so much about the crypto strength. Lots of different
parts to choose from too. Mostly 48 bit registration numbers, then
choices of NV RAM or EPROM, organization of data, and scratch pad.

Looks pretty neat, but does not appear to have an RNG. My data book is
dated 94-95, so they may new stuff now.

Patience, persistence, truth,
Dr. mike

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