发明名称 Digital rights management (DRM) encryption and data-protection for content on device without interactive authentication
摘要 To render content on a medium, a device obtains a table from the medium, obtains a private key of the device (PR-PD), indexes into an entry of the table based thereon, obtains (PU-PD(RND)) from the indexed-into entry of the table, and applies (PR-PD) to (PU-PD(RND)) to expose a random key (RND). Then, the device obtains (RND(PR-PM)) from the table, applies (RND) to (RND(PR-PM)) to expose a private key of the medium (PR-PM), obtains (PU-PM(KD)) from the license, applies (PR-PM) to (PU-PM(KD)) to expose a content key (KD), obtains (KD(content)) from the storage medium, applies (KD) to (KD(content)) to expose the content.
申请公布号 US7730329(B2) 申请公布日期 2010.06.01
申请号 US20060400427 申请日期 2006.04.06
申请人 MICROSOFT CORPORATION 发明人 STROM CLIFFORD P.;GANESAN KRISHNAMURTHY;HELIN JONAS FREDRIK
分类号 G06F11/30;G06F12/14;G06F1/00;G06F21/00;H04L;H04L9/00;H04L9/14 主分类号 G06F11/30
代理机构 代理人
主权项
地址