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2. 发明申请

WO2005071873A1 METHOD AND SYSTEM FOR SESSION BASED WATERMARKING OF ENCRYPTED CONTENT 审中-公开
标题翻译：基于加密内容的基于会话的水印的方法和系统
公开(公告)号：WO2005071873A1
公开(公告)日：2005-08-04
申请号：PCT/US2005/000626
申请日：2005-01-06
申请人： WIDEVINE TECHNOLOGIES, INC. , JACOBS, Andre , ZHUK, Oscar, V. , MORTEN, Glenn, A. , SHAPIRO, Eric, Bradley
发明人： JACOBS, Andre , ZHUK, Oscar, V. , MORTEN, Glenn, A. , SHAPIRO, Eric, Bradley
IPC分类号： H04K1/00
CPC分类号： H04N1/32144 , G06F21/10 , H04L63/126 , H04L2463/103
摘要： A method and apparatus applies a variety of session based watermarks in real-time to content that is streamed from a server towards a client. The invention employs content where differing targeted portions are selectively encrypted, such that other portions remain in the clear (unencrypted). Session information, such as an intended client, end-user, operator of a content server, content owner, and the like, may be used to generate the various watermarks. The watermarks may also be digitally signed and/or encrypted. The watermarks may be applied to the portions of the clear content as the content is streamed towards the client. In one embodiment, a bridge server is configured to modify packets of streaming media data files with the variety of watermarks. In another embodiment, the content server for the streaming media data includes a plug-in component that dynamically modifies the packets of streaming media data files with the variety of watermarks.
摘要翻译：一种方法和装置将各种基于会话的水印实时地应用于从服务器流向客户端的内容。本发明使用其中不同的目标部分被选择性地加密的内容，使得其他部分保持清晰（未加密）。可以使用诸如预期客户端，内容服务器的最终用户，操作者，内容所有者等的会话信息来生成各种水印。水印也可以被数字签名和/或加密。当内容被流向客户端时，水印可以应用于清晰内容的部分。在一个实施例中，桥服务器被配置为使用各种水印来修改流媒体数据文件的分组。在另一个实施例中，用于流媒体数据的内容服务器包括使用各种水印来动态修改流媒体数据文件的分组的插件组件。

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