Re: Java iButton from Dallas Semiconductor

Ben Laurie (ben@algroup.co.uk)
Thu, 09 Apr 1998 18:04:45 +0100

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William H. Geiger III wrote:
>
> In <199803302044.PAA00405@tana.mit.edu>, on 03/30/98
> at 03:44 PM, Ryan Lackey <rdl@MIT.EDU> said:
>
> >If anyone else is interested in a button hacker group, send me mail and
> >I'll put you on a button-specific mailing list.
>
> Hi,
>
> Please add me to your list.
>
> Awhile back I had proposed to the list a crypto dongle. My proposal
> follows pretty much what is now an I-Button but the I-Button is missing
> one key ingredient: A wipe switch. I consider this crucial to any such
> device that there be a mechanism to completely wipe all data stored in
> memory.
>
> I noticed that you have been doing some work with the I-Buttons. How much
> effort do you think would be involved in modifying an I-Button to add this
> feature?

Tricky. The only external comms is the 1-wire LAN. So a wipe would have
to be some kind of command sent that way, which implies substantial
complexity in external hardware. Which I imagine was not what you had in
mind...

Cheers,

Ben.

-- 
Ben Laurie            |Phone: +44 (181) 735 0686|  Apache Group member
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A.L. Digital Ltd,     |Apache-SSL author    http://www.apache-ssl.org/
London, England.      |"Apache: TDG" http://www.ora.com/catalog/apache

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