System and device for providing information and data storage device

摘要: PROBLEM TO BE SOLVED: To easily provide contents data by allowing an information providing device to receive a key and the enciphered key, insert prescribed into decoded due electronic watermark record data. SOLUTION: An distribution center 1 transmits individual provider 2 registered user home network 5. The has digitized contents, inserts verify its own enciphers service 3. 3 adds cost supplied 5 purchases right use stores in storing part.