System for improving the digital signature algorithm

System for interactive choice of either automatically using the

System for interfacing a digital encryption device to a time-div

System for monitoring ATM cross-connecting apparatus by inside-a

System for multilevel secure database management using a knowled

System for packet filtering of data packet at a computer network

System for processing a scrambled video signal

System for processing a video signal via series-connected high s

System for processing coded information

System for producing synchronized signals

System for providing access to digitally encoded communications

System for providing high security for personal computers and wo

System for providing secure internetwork by connecting type enfo

System for providing secure remote command execution network

System for scrambling and descrambling video signals by altering

System for seamlessly updating service keys with automatic...

System for securing inbound and outbound data packet flow in a c

System for the secret transmission of audio signals and televisi

System for the simultaneous coding of a number of television sig

System for transmitting a commercial program in a CATV system