Device for the identification of messages
Devices to (1) supply authenticated time and (2) time stamp and
Diagnostic method and apparatus for a cable television interdict
Digital active advertising
Digital data cryptographic system
Digital document authentication system
Digital radio transceiver with encrypted key storage
Digital recording system with time-bracketed authentication by o
Digital signal receiver capable of receiving data encrypted and
Digital signature purpose encoding
Digital signature system and method based on a conventional encr
Digital signature with auditing bits
Digital signatures on a smartcard
Digitally certifying a user identity and a computer system in co
Distributed cryptographic object method
Distributed cryptographic object method
Distributed data processing network
Distributed fingerprints for information integrity verification
Distributed information system having automatic invocation of ke
Distributed registration and key distribution system and method