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    • 10. 发明申请
    • DIGITAL LICENSE SHARING SYSTEM AND METHOD
    • 数字许可证共享系统和方法
    • WO2005093989A1
    • 2005-10-06
    • PCT/AU2005/000449
    • 2005-03-29
    • SMART INTERNET TECHNOLOGY CRC PTY LIMITEDLIU, QiongSAFAVI-NAINI, ReihanehSHEPPARD, Nicholas, Paul
    • LIU, QiongSAFAVI-NAINI, ReihanehSHEPPARD, Nicholas, Paul
    • H04L9/00
    • G06F21/105G06F21/10G06F2221/0706G06Q10/10H04L63/0442H04L2463/101
    • A digital license sharing method, system and apparatus is provided for use in a digital rights management system. Usage rights in respect of digital content are transferred between content player devices or applications by associating with each player a status indication. Transfer is carried out by transmitting a request to obtain the usage rights from a player requiring usage rights to a player currently holding the rights. The transferring player sets a first status indication to indicate that it is no longer entitled to exercise the rights, and transmits a response to the requesting player to transfer the usage rights. The requesting player then sets a second status indication to indicate that it is henceforth entitled to exercise the rights. Methods and apparatus for creating transferable licenses are also provided that employ a sharable license format including a validated portion and an unvalidated portion. The validated portion, which may be, for example, digitally signed by a license issuing authority, includes characteristic information of a digital content decryption key required to access the digital content controlled by the license. The unvalidated portion includes the digital content key itself, encrypted using an encryption key associated with a player entitled to use the license.
    • 提供数字许可证共享方法,系统和装置用于数字版权管理系统。 关于数字内容的使用权利通过与每个播放器相关联的状态指示在内容播放器设备或应用之间传送。 通过从当前持有权利的玩家发送要求使用权的玩家获得使用权的请求来进行转移。 转移玩家设置第一状态指示以指示其不再有权行使权限,并且向请求方发送响应以转移使用权。 然后,请求玩家设置第二状态指示以指示其以后有权行使权利。 还提供了用于创建可转让许可证的方法和设备,其采用可共享许可证格式,包括经过验证的部分和未验证的部分。 验证部分可以例如由许可证颁发机构数字签名,包括访问由许可证控制的数字内容所需的数字内容解密密钥的特征信息。 未验证部分包括使用与有权使用许可证的玩家相关联的加密密钥加密的数字内容密钥本身。