Originalität-garantierende, elektronische Speichervorrichtung, Berechtigungs-Verifikationssystem, Originalität-garantierendes, elektronisches Speicherverfahren, Berechtigungs-Verifikationsverfahren, Schaden-Wiederherstellung-Verfahren und Speichermedium

摘要

The storage device includes a storage unit which stores electronic data consisting of a number of content files as a single original in an identifiable state. An access unit controls the access to the original electronic data at a level which is different from the level of access to non-original electronic data. The storage unit stores tamper detection information as original information corresponding to the electronic data. The storage device may include a tamper detection information computing device which receives a request to re-store the electronic data as a single original using an encryption key to compute tamper detection information for each of the content files. A second tamper detection information computing device uses the encryption key to compute second temper detection information for edition management information. Independent claims are included for an electronic storage device, an authorization verification system, an electronic storage method, an authorization verification method, damage recovery method and a storage medium for storing a program in a computer.