Communication apparatus, key server, and management server
作者： Haruhiko Toyama , Hideki Matsumoto , Toru Kambayashi , Kentaro Umesawa , Ryuiti Koike
DOI:
关键词:
摘要: A communication apparatus obtains file information indicating all or a part of first and second encrypted pieces obtained by encrypting plurality constituting content version management with which it is possible to judge whether the has validity receives, for each pieces, one piece from another apparatus, using information. The transmits, key server, request message requesting decryption keys being used decrypting received different obtain in correspondence receives keys.
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