re clipper considered harmful restated and amplified in article apr wdl loral com koontzd phobos lrmsc loral com david koontz writes clipper also allows an extraordinary opportunity for the criminal to conceal use of super encryption an automated full system surveillance mechanism quite feasible across radio bandwidth which knows family key f can validate clipper wrappers and n esn associations but it cannot reveal in realtime the use of super encryption unless it knows all unit keys which we are being assured are only to be made available in two separate pieces upon specific wiretap like order the serial number will be in a bit block with a bit filler doesn t take a lot to check to see if that is correct yes but the extra encryption could be applied before the message is encrypted by the clipper so that the wrapper would be fine the phone s serial number and the session key would be in the law enforcement field etc but the message wouldn t be readable even if the particular clipper s key were obtained from the escrow agents in fact it shouldn t even be possible to detect that a message has been double encrypted without a court order right
