发明授权
US07970141B2 Method and apparatus for tracing the source of decryption keys used by a decoder
失效
用于跟踪由解码器使用的解密密钥的源的方法和装置
- 专利标题： Method and apparatus for tracing the source of decryption keys used by a decoder
- 专利标题（中）： 用于跟踪由解码器使用的解密密钥的源的方法和装置
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申请号： US11855008申请日： 2007-09-13
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公开(公告)号： US07970141B2公开(公告)日： 2011-06-28
- 发明人: Dan Boneh , Amit Sahai , Brent Waters
- 申请人： Dan Boneh , Amit Sahai , Brent Waters
- 申请人地址： US CA Oakland US CA Menlo Park US CA Stanford
- 专利权人： The Regents of the University of California,SRI International,The Board of Trustees of the Leland Stanford Junior University
- 当前专利权人： The Regents of the University of California,SRI International,The Board of Trustees of the Leland Stanford Junior University
- 当前专利权人地址： US CA Oakland US CA Menlo Park US CA Stanford
- 主分类号： H04L9/00
- IPC分类号： H04L9/00
摘要：
The present invention relates to a method for traitor tracing. One embodiment of a method for determining at least one traced private key used by a decoder to decrypt an encrypted message includes defining an input ciphertext, the input ciphertext being associated with a tracing private key and having a sublinear size, calling the decoder on the input ciphertext, and associating the tracing private key with a set of traced private keys if the decoder is able to correctly decrypt the encrypted message in accordance with the input ciphertext, the set of traced private keys including at least one private key.