System and scheme of cipher communication

System for bitstream generation

System for broadband descrambling of sync suppressed television

System for communicating television signals or a plurality of di

System for controlling access to broadcast transmissions

System for controlling the distribution and use of digital works

System for data encryption and decryption of digital data...

System for delaying the activation of inactivity security mechan

System for detecting improper rewrites of data system for using

System for determination of the equivalence of two objects witho

System for determining a truth of software in an information pro

System for determining direct and indirect user access privilege

System for enabling information marketplace

System for encoding data presented with a first coding device an

System for encrypted information transmission

System for encryption of partitioned data blocks utilizing publi

System for granting ownership of device by user based on request

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