According to their whitepaper, "27MHz keyboard insecurities," Max Moser and Philipp Schrödel claim that keystroke signals sent from Microsoft's Wireless Optical Desktop 1000 and 2000 are encrypted with a simple one-byte offset cipher -- meaning that there are only 256 possible keys, with less than 50 sample strokes needed for decryption.
Signals from wireless keyboards easy to intercept
Posted on Sunday, December 09 2007 @ 4:36 CET by Thomas De MaesschalckResearchers from Dreamlab published proof that wireless keyboards are very insecure. Engadget writes data logging is fairly easy and requires less than 50 sample strokes for decryption:
