System and method for secure electronic commerce transactions

System and method for secure group communications via multicast

System and method for secure initial program load for diskless w

System and method for secure medical and dental record interchan

System and method for secure purchase and delivery of video cont

System and method for session management

System and method for simultaneously authorizing multiple virtua

System and method for subscriber interactivity in a television s

System and method for transmitting and receiving variable length

System and method for transmitting entertainment information to

System and method for trusted path communications

System and method for user authentication employing dynamic encr

System and method for user authentication having clock synchroni

System and method of providing system integrity and positive aud

System and method of verifying cryptographic postage evidencing

System and method of verifying the legitimacy of a product again

System and methods for secure transaction management and electro

System and scheme of cipher communication

System at a vehicle for debiting at automatic fuelling

System for and method of authenticating a client