re clipper chip technical details in article apr ulysses att com smb research att com steven bellovin writes nothing was said about where k p comes from oh hellman said each user will get to choose his or her own key that s the key which i called k p the session key according to hellman if alice and bob are communicating with the clipper chip then alice chooses her own key and bob chooses his own key this is incompatible with the suggestion that when alice and bob are talking they use a common k p chosen by classical or public key approaches the protocol key management description published so far is either incomplete or incorrect it leaves me with no idea of how the system would actually work i hope the cpsr foia request succeeds so that we get full details dan
