Invention Grant
US08724807B2 Method for etching and secure distribution of digital data, access device and writer 失效
数字数据蚀刻和安全分配方法,访问设备和写入器

Method for etching and secure distribution of digital data, access device and writer
Abstract:
The invention relates to a method of receiving and securely recording digital data comprising a step for recording said digital data on a secured disk by a recorder/receiver belonging to a determined secured domain comprising several equipment items and defined by an identifier, a step for recording on the secured disk the identifier of the domain of the recorder/receiver to define this domain as the only domain in which the reproduction/copying of the multimedia content is authorized, wherein it comprises a prior step for recovering a disk key from the secured disk, and in that the domain identifier is encrypted by said disk key and the digital data is scrambled by title keys, said title keys being encrypted by said disk key. The invention also relates to a method of securely distributing digital data, an access device and a recorder/receiver.
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