Invention Grant
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
- Patent Title: Method and apparatus for tracing the source of decryption keys used by a decoder
- Patent Title (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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Application No.: US11855008Application Date: 2007-09-13
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Publication No.: US07970141B2Publication Date: 2011-06-28
- Inventor: Dan Boneh , Amit Sahai , Brent Waters
- Applicant: Dan Boneh , Amit Sahai , Brent Waters
- Applicant Address: US CA Oakland US CA Menlo Park US CA Stanford
- Assignee: The Regents of the University of California,SRI International,The Board of Trustees of the Leland Stanford Junior University
- Current Assignee: The Regents of the University of California,SRI International,The Board of Trustees of the Leland Stanford Junior University
- Current Assignee Address: US CA Oakland US CA Menlo Park US CA Stanford
- Main IPC: H04L9/00
- IPC: H04L9/00
Abstract:
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.
Public/Granted literature
- US20080075287A1 METHOD AND APPARATUS FOR TRACING THE SOURCE OF DECRYPTION KEYS USED BY A DECODER Public/Granted day:2008-03-27
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