System for reading encrypted information, and unit for use in su

System for reconstruction of a secret shared by a plurality of p

System for refunding payment for software

System for remote purchase payment and remote bill payment trans

System for securely exchanging data with smart cards

System for securely providing restricted video information

System for securely storing and reading encrypted data on a data

System for signatureless transmission and reception of data pack

System for storing and distributing keys for cryptographically p

System for the anonymous counting of information items for stati

System for the checking of limited access to authorized time slo

System for the printing and reading of encrypted messages

System for the shifting of a television signal scrambler

System for updating an authorization memory

System method and apparatus for authenticating an encrypted sign

System, method and article of manufacture for a gateway payment

System, method and article of manufacture for a modular gateway

System, method and article of manufacture for conditionally acce

System, method and article of manufacture for processing a plura

System, method and article of manufacture for remote virtual poi