Reproducing apparatus and recording medium playback method using local storage and protection devices and shared data protection method

摘要

Method and apparatus for protecting the shared data, and reproducing apparatus and method for reproducing data from a recording medium using a local storage is disclosed. The present invention allows only applications for downloading shared data associated with the recording medium in the local storage, with valid information to access the shared data to access the shared data. The present invention generates a virtual package including a shared data by downloading shared encrypted data associated with the recording medium in the local storage, and binding to the data in the recording medium and data in the local storage, including to be able to read the shared data using the virtual package, and reproduces the shared data is decrypted. Therefore, it is possible to protect the shared data by only content unaltered and content provided by the content provider true to be played. In addition, it is also possible to protect the shared data from functional malicious by the application does not have permission.