Control method archive system control program, archive system, and the management device

摘要

User terminal, the same as the management device has the data it reads the encrypted content to be authenticated from the encrypted content storage medium for storing in association with the management information and the encrypted content to form a read encrypted content calculating a first hash value by substituting the hash function, management apparatus, data acquired from the user terminal and the management information and the first hash value which is calculated to form the encrypted content maintaining the authenticity from the management information storage unit for storing in association with the management information and second hash value is a hash value that has been previously calculated by assigning the hash function, the hash of the corresponding second as a search key management information obtained determines authentication success result authenticates the hash value and the second hash value of the first read value and the acquired if they match, the authentication result is a matching hash value and the second hash value of the first If it is, to allow the process of decoding.