On Sat, 10 Jul 2004, Perry E. Metzger wrote:
> another purpose -- preserving the privacy of drivers by using more > complicated protocols. However, as the benefit of such systems is to > people who are unlikely to have much voice in the construction of the > system, and who are also unlikely to be willing to pay more money to > gain privacy, I think the implementation of such tags is unlikely. I think it would be easier to provide drivers with a simpler method of turning off their transponder. Recently ordered FasTrak tokens come with a mylar bag for this purpose, which is too unwieldy. A switch, however, might be enough. This would not prevent an adversary from recording the IDs of cars that pass through toll gates. It would, however, prevent reading those IDs at other times. -David --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]