System and method of authentication

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 method to transparently integrate private key operati

System and methods for data encryption using public key cryptogr

System and methods for data encryption using public key cryptogr

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

System for controlling access to a function having clock synchro

System for controlling access to a function, using a plurality o

System for controlling access to broadcast transmissions

System for conveying information for the reliable authentificati

System for cryptographing and identification

System for decoding and displaying personalized indentification

System for decoding transmitted scrambled signals

System for detecting unaccounted for printing in a value printin

System for detecting unauthorized account access