David Honig wrote:
>
> You have just reinvented the stuff TEMPEST tries to fight -
> van Eck monitoring. Monitors, RS232 lines, and PC busses
> have been found to radiate well.
>
> A while back someone on cypherpunks posted a program that would let you
> hear FSK modulation on a normal radio when the program
> was run, by modulating PCI traffic.
>
Yup, I'm well aware of Van Eck monitoring, having done Van Eck video
monitoring
with a friend of mine about 15 years ago. Since most smart cards are
not
terribly well shielded, I wonder whether you could *in reality* use
Van Eck
monitoring to do a DPA-like crack of DES as a result.