re how to detect use of an illegal cipher jay fenton fenton kaleida com writes how can the government tell which encryption method one is using without being able to decode the traffic i e in order to accuse me of using an unauthorized strong encryption technique they would have to take both keys out of escrow run them against my ciphertext and draw a blank i was thinking about this also it s quite possible the system transmits in clear the serial number of the device being used that way they can start a tap get the serial number and use the warrant for the first tap to get the key if they tap someone who s apparently using encryption but don t find that prefix then they ll assume it s an un authorized encryption scheme may the kloo gnomes be generous to you robert crawford betel camelot bradley edu
