GENERATING METHOD FOR PRIVATE ELECTRONIC LITERARY WORK, PROTECTED ELECTRONIC LITERARY WORK AND METHOD FOR PROTECTING ELECTRONIC LITERARY WORK IN CASE OF REPRODUCING

摘要

PROBLEM TO BE SOLVED: To make unreadable an electronic literary work and a system context (or resource information or system resource) and to enable highly reliable interpretation or reproducing of the electronic literary work without canceling the key for the electronic contents.;SOLUTION: An electronic literary work 1410 contains electronic contents and resource information. The resource information can contain information to be used for an application for reproducing for formatting or processing the electronic contents. The electronic literary work and the system context are made unreadable while using a key system for initializing and customizing the confidentiality while depending on a key seed 1418. Various types of key seeds including a random number, a user's system state or characteristic and a dynamic state-based key seed based on a dynamic system state or characteristic can be used.;COPYRIGHT: (C)2002,JPO