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Didier Stevens made a funny little find in Windows 7.  In the past, userassist keys had been encrypted in ROT13.  Now, he sees them encrypted in a Vigenère cipher.

(In case you’re not familiar with these terms, ROT13 is trivial to crack, and Vigenère, although quite a bit more sophisticated than ROT13, is breakable, so it seems just to be a little bit of fun on the part of the developers at Microsoft with the crypto community — sort of an Easter Egg of sorts).

Nice find Didier!

Alex Eckelberry