发明授权
- 专利标题： System and method for providing a secure environment for performing conditional access functions for a set top box
- 专利标题（中）： 提供用于为机顶盒执行条件访问功能的安全环境的系统和方法
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申请号： US11342766申请日： 2006-01-30
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公开(公告)号： US07461396B2公开(公告)日： 2008-12-02
- 发明人: Chris Brown , Nicol So , Gregory Kazmierczak
- 申请人： Chris Brown , Nicol So , Gregory Kazmierczak
- 申请人地址： US DE Wilmington
- 专利权人： Paladin Patents Inc.
- 当前专利权人： Paladin Patents Inc.
- 当前专利权人地址： US DE Wilmington
- 代理机构： Thelen LLP
- 主分类号： H04L9/32
- IPC分类号： H04L9/32 ; G06F15/16 ; H04N7/167 ; H04N7/173
摘要：
A system and method are provided for decrypting a selected program. The system and method can receive at least one authorization message and at least one control message associated with a selected program. The system and method stores the at least one authorization message. The system and method transmits a first control signal if the at least one control message specifies a type of program that can be decrypted given the at least one authorization message and transmits a second control signal if the at least one control message specifies a type of program that can not be decrypted by the decryption device given the at least one authorization message.
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