[OLPC Security] teasing apart the security problem into pieces

[Jim Gettys]

On Sun, 2006-04-09 at 16:36 -0400, Simson Garfinkel wrote:
> I want to use physical connections as a proxy for trust. So I would  
> like to see the OS copied from another laptop connected by a cable  
> connecting the USB ports together.

This is a bit easier said than done: the machines in this case would
both have host controllers.

Whether we can make On-the-go work is highly questionable, given the
errata on the processor.

> 
> On Apr 9, 2006, at 4:28 PM, Tim Flavin wrote:
> 
> > Simson Garfinkel said:
> >> Presumably another funky set of keys will have my laptop copy the
> >> operating system from your laptop (but not the user code)?
> >
> > If there is enough boot rom yes.  Otherwise the OS is copied from a
> > (flash) disk on the USB port.  The boot rom may be small to save money
> > and things like TCP etc may take up too much space.
> >
> > Glad to see the necessary tools are available.
> >
> > Tim
> >
> 
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-- 
Jim Gettys
One Laptop Per Child