| 摘要 |
PURPOSE: A system and method for distributing digital contents are provided to reproduce the content while protecting the intellectual property right without a complicated procedure even if various kinds of intellectual property right protection systems exist, and which ensure interoperability of intellectual property right systems on the content supply side with users. CONSTITUTION: A user A requests the roaming service provider to obtain the necessary contents or objects and to perform IPMP information conversion to the form in conformity with the Type 2001h IPMP System in user A's possession. The roaming service provider pays necessary amounts of money to server B and to a server C by a regular procedure, performs a user authentication procedure, obtains contents or object data, and receives keys for decryption, password parameters, and the like according to a request from user A. The roaming service provider performs IPMP information conversion to enable decryption necessary for reproduction with the user A's Type 2001h IPMP System. The roaming service provider confirms the user A's identity. The roaming service provider delivers the data with the converted IPMP information to the user A.
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