2024年5月23日发(作者：)
专利内容由知识产权出版社提供
专利名称：Renewable traitor tracing
发明人：Hongxia Jin,Jeffrey Bruce Lotspiech,Sigfredo
Ismael Nin
申请号：US11230022
申请日：20050919
公开号：US09520993B2
公开日：20161213
专利附图：
摘要：The present invention provides a method performed on a computer of
preventing re-use of compromised keys in a broadcast encryption system. In an
exemplary embodiment, the method includes (1) incorporating a particular set of
Sequence Keys assigned by a license agency into individual receivers, (2) assigning a
Sequence Key Block (SKB) by the license agency to at least one distributed protected file,
(3) performing incremental cryptographic testing by the individual receivers to determine
if a selected Sequence Key from the set of Sequence Keys is compromised, (4) if the
selected Sequence Key is not compromised, decrypting the file, and (5) if the selected
Sequence Key is compromised and if a subsequent Sequence Key from the set of
Sequence Keys is available, selecting the subsequent Sequence Key.
申请人：Hongxia Jin,Jeffrey Bruce Lotspiech,Sigfredo Ismael Nin
地址：San Jose CA US,Henderson NV US,Morgan Hill CA US
国籍：US,US,US
代理机构：Foley Hoag LLP
代理人：Erik Huestis,Mohammed Kashef
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