| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for sending an encryption key capable of sending an encryption key capable of correctly restoring key information even if an apparatus for issuing and managing key information to a plurality of apparatus is broken. SOLUTION: An encryption key generating section 11 generates an encryption key 121 to be supplied to a content recording/reproducing apparatus connected to the encryption key sending apparatus 10. A nonvolatile memory 12 stores the encryption key 121, and stores a server flag 122 indicating that the encryption key 121 may be issued to the connected content recording/reproducing apparatus. If the connected apparatus is an authorized apparatus, an encryption key output section 13 outputs the encryption key 121. In order to restore the encryption key upon failure, when authenticating that a card ID 21 is a card for its own apparatus, a CPU 15 outputs an encryption key and allows the IC card 20 to store the encryption key, and updates a card key flag 23. COPYRIGHT: (C)2007,JPO&INPIT
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