公开(公告)号：EP2859519A4

公开(公告)日：2016-01-27

申请号：EP13803972

申请日：2013-06-10

申请人： INTERTRUST TECH CORP

发明人： TENNETI SANJEEV ,  KHAMBETE PRASAD ,  BRADLEY WILLIAM B ,  SANAGAVARAPU PRASAD

IPC分类号： G06Q30/02 ,  G06F21/10 ,  G06F21/62 ,  H04L29/06 ,  H04L29/08

CPC分类号： G06F21/44 ,  G06F21/10 ,  G06F21/6254 ,  H04L63/10 ,  H04L67/306

公开(公告)号：EP1629363A4

公开(公告)日：2008-05-21

申请号：EP04776350

申请日：2004-06-07

申请人： INTERTRUST TECH CORP

发明人： BRADLEY WILLIAM B ,  MAHER DAVID P ,  BOCCON-GIBOD GILLES

IPC分类号： G06F1/00 ,  G06F20060101 ,  G06F15/16 ,  G06F21/10 ,  G09F20060101 ,  H04L9/00 ,  H04L29/06 ,  H04L29/08

CPC分类号： H04L63/10 ,  G06F17/30864 ,  G06F21/10 ,  G06F2221/0759 ,  G06F2221/0786 ,  G06F2221/0788 ,  G06Q20/1235 ,  G06Q2220/10 ,  G06Q2220/18 ,  H04L9/0822 ,  H04L9/0825 ,  H04L9/0861 ,  H04L9/3263 ,  H04L9/3271 ,  H04L63/0281 ,  H04L63/0428 ,  H04L63/061 ,  H04L63/08 ,  H04L63/0823 ,  H04L63/20 ,  H04L67/1061 ,  H04L67/16 ,  H04L2209/603 ,  H04L2463/101 ,  H04L2463/102

摘要： Systems and methods for managing access to a piece of content in a peer-to-peer computing system are disclosed. A client device comprises a user interface (1000; 1210) for receiving a request from a user to access a piece of protected content, a host application (1002; 1200) for recognising a protected content object format and issuing a request to a digital rights management engine (1220) to evaluate digital rights management objects that make up a licence, and a digital rights management engine (1000; 1220) for executing the control program (1324) to determine whether permission to access the protected content should be granted. The licence comprises a set of objects that protect the content and govern its use, including a control object (1320), the control object including a control program (1324). Executing the control program comprises determining whether there exists a set of link objects (1420) representing relationships between nodes that can establish a path to a target node.