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Method and apparatus for storing and retrieving encrypted programming content such that it is accessible to authorized users from multiple set top boxes
Method and apparatus for storing and retrieving encrypted programming content such that it is accessible to authorized users from multiple set top boxes
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机译:用于存储和检索加密的节目内容的方法和装置,以使授权用户可以从多个机顶盒访问该节目内容
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摘要
A set top box is provided that includes a receiver/tuner for receiving programming content over a broadband communications network, an encrypter/decrypter for encrypting and decrypting the programming content, and a secure memory configured to store at least a first cryptography key to be used by the encrypter/decrypter to encrypt and decrypt the programming content. The set top box also includes a digital storage medium for storing encrypted programming content, a multimedia processor operationally associated with the receiver/tuner, the decrypter, and the digital storage medium, and a user interface operationally associated with the multimedia processor. The multimedia processor is configured to: encrypt decoded programming content using the first cryptography key stored in the secure memory and uniquely associated with the set top box; store the encrypted content on the digital storage medium; encrypt the first cryptography key using a second cryptography key to form an encrypted first cryptography key; and store the encrypted first cryptography key on the digital storage medium.
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