Method and device for data decryption, a method and device for d

Method and device for enciphering data to be transferred and for

Method and device for preventing tape piracy

Method and device for protecting data of ROM

Method and device for protecting software delivered to a user by

Method and device for protecting stored data

Method and device for temporarily authorizing the use of a progr

Method and device for utilizing data content

Method and manufacture for preventing unauthorized use by judgin

Method and system for audio information dissemination using vari

Method and system for checking security of data received by a co

Method and system for controlling distribution of software in a

Method and system for creating and storing a backup copy of file

Method and system for detecting fraudulent data update

Method and system for digital information protection

Method and system for disseminating stored programs and data

Method and system for distributing a plurality of software produ

Method and system for generating and auditing a signature for a

Method and system for generating pronounceable security password

Method and system for identifying documents generated by an unau