Information Leakage from Optical Emanations

[R. A. Hettinga]

Wherein someone discovers that one can do power analysis attacks just by
watching der Blinkenlighten.


At 3:32 PM -0700 on 3/5/02, Joe Loughry wrote:


> LED status indicators on data communication equipment,
> under certain conditions, are shown to carry a modulated optical
> signal that is significantly correlated with information being
> processed by the device.


Quick. Everybody disconnect those pretty blue LEDs on all your NCipher
boxes... :-).

Cheers,
RAH


-- 
-----------------
R. A. Hettinga <mailto: rah at ibuc.com>
The Internet Bearer Underwriting Corporation <http://www.ibuc.com/>
44 Farquhar Street, Boston, MA 02131 USA
"... however it may deserve respect for its usefulness and antiquity,
[predicting the end of the world] has not been found agreeable to
experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'

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