[cryptography] Preserve us from poorly described/implemented crypto

Stephan Somogyi cryptography at lt.gross.net
Sat Jun 4 21:46:17 EDT 2011


"So what is AES? It's a unique pre-programmed 128-bit encryption key 
which is designed to help prevent your keystrokes, which are 
transmitted over-the-air, from being intercepted and deciphered."

I just discovered the preceding at: 
<http://microsofthardwareblog.com/wireless-desktop-2000/>.

Neither the Product Guide nor the Technical Data Sheet provide details.

Is there really only a single hardwired key for the kbd/receiver pair 
as the text suggests?

"Timing Analysis of Keystrokes and Timing Attacks on SSH" has been 
around for a decade now. Did the designer(s) of the keyboard's OTA 
protocol take this sort of thing into account?

I can't decide whether this is snake oil or a case of having let the 
intern write a blog post unsupervised.

s.



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