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    • 3. 发明申请
    • Token passing technique for media playback devices
    • 用于媒体播放设备的令牌传递技术
    • US20080168568A1
    • 2008-07-10
    • US11651339
    • 2007-01-08
    • Rainer BrodersenJeffrey RobbinAugustin J. FarrugiaRod Schultz
    • Rainer BrodersenJeffrey RobbinAugustin J. FarrugiaRod Schultz
    • H04L9/12
    • H04N7/1675G06F21/10H04N21/4126H04N21/4405H04N21/63345H04N21/8355
    • A digital rights management (DRM) system for distribution of digital content such as audio or video uses a token passing scheme to enhance security of the content from unauthorized access and use, including access by unauthorized players. The token is requested from the central content or DRM server by a host device such as a user's computer, using security related information. The token is then passed to a media player associated with the host device, the token being encrypted using a key special to that particular player. Upon receipt of the token, the player transmits back to the server certain related security information confirming receipt of the token and in return receives keys for decryption of the associated digital content. In the absence of proper passing of the token, player access to the content, or further access to other content, is denied. This also allows the player to communicate directly with the server for obtaining the keys.
    • 用于分发诸如音频或视频的数字内容的数字版权管理(DRM)系统使用令牌传递方案来增强内容的安全性,以防止未经授权的访问和使用,包括未经授权的玩家的访问。 使用安全相关信息由主机设备(诸如用户的计算机)从中央内容或DRM服务器请求令牌。 令牌然后传递给与主机设备相关联的媒体播放器,该令牌使用该特定播放器专用的密钥进行加密。 在接收到令牌时,播放器向服务器发送确认令牌的接收的某些相关安全信息,并且作为回报接收用于解密相关数字内容的密钥。 在没有正确传递令牌的情况下,播放器访问内容或进一步访问其他内容,被拒绝。 这也允许播放器直接与服务器通信以获得密钥。
    • 4. 发明授权
    • Token passing technique for media playback devices
    • 用于媒体播放设备的令牌传递技术
    • US07975312B2
    • 2011-07-05
    • US11651339
    • 2007-01-08
    • Rainer BrodersonJeffrey RobbinAugustin J. FarrugiaRod Schultz
    • Rainer BrodersonJeffrey RobbinAugustin J. FarrugiaRod Schultz
    • H04L9/12
    • H04N7/1675G06F21/10H04N21/4126H04N21/4405H04N21/63345H04N21/8355
    • A digital rights management (DRM) system for distribution of digital content such as audio or video uses a token passing scheme to enhance security of the content from unauthorized access and use, including access by unauthorized players. The token is requested from the central content or DRM server by a host device such as a user's computer, using security related information. The token is then passed to a media player associated with the host device, the token being encrypted using a key special to that particular player. Upon receipt of the token, the player transmits back to the server certain related security information confirming receipt of the token and in return receives keys for decryption of the associated digital content. In the absence of proper passing of the token, player access to the content, or further access to other content, is denied. This also allows the player to communicate directly with the server for obtaining the keys.
    • 用于分发诸如音频或视频的数字内容的数字版权管理(DRM)系统使用令牌传递方案来增强内容的安全性,以防止未经授权的访问和使用,包括未经授权的玩家的访问。 使用安全相关信息由主机设备(诸如用户的计算机)从中央内容或DRM服务器请求令牌。 令牌然后传递给与主机设备相关联的媒体播放器,该令牌使用该特定播放器专用的密钥进行加密。 在接收到令牌时,播放器向服务器发送确认令牌的接收的某些相关安全信息,并且作为回报接收用于解密相关数字内容的密钥。 在没有正确传递令牌的情况下,播放器访问内容或进一步访问其他内容,被拒绝。 这也允许播放器直接与服务器通信以获得密钥。