Abstract
We need a robust method to assure secure storage, retrieval, and transmission of such digital data, especially for mobile devices. This has become more apparent after hearing the high-profile story of Napster. This new type of music delivery service brought up issues of how to protect copyrighted data, particularly in the new generation of peer-to-peer distribution schemes. Furthermore, the rapid penetration of mobile phones worldwide suggests that downloading copyrighted data onto these portable devices is possible around the clock at any place. I primarily focus on the copyright management of Secure MultiMediaCards (SecureMMCs) to handle users' access to digital copyrighted data in a unique scheme called Super Distribution. Using SecureMMCs, Super Distribution technology can build legitimate peer-to-peer systems where copyrighted data are freely copied and exchanged, but users must obtain the right to use the data. Users may then be charged to reimburse the copyright holders. I also discuss Keltaide-Music, a mobile phone music distribution service using SecureMMCs.
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