http://www.dreamlab.net/download/articles/Press%20Release%20Dreamlab%20Technologies%20Wireless%20Keyboard.pdf
Computerworld coverage at http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9051480 The main protection against interception is the proprietary protocol, which these guys were able to reverse engineer. The exchange is "encrypted" using a Caeser cipher (XOR with a single byte that is the common key, which is the only secret in the system); they say they can determine the right key within 30 characters or so. Their current hardware can read the data from 33 feet away; with a better antenna, well over a hundred feet should be possible. These things operate at 27 MHz, which will penetrate walls easily. Reading multiple keyboards at once is possible and they already do it. They are looking at injecting data into the stream - presumably not very hard. Many other brands of wireless keyboard may well be equally vulnerable. -- Jerry --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
