| Copyright protection is taken into account by more and more people and cryptography is one of the important solutions to this problem. This dissertation focuses on how to apply the modern cryptography to the copyright protection of digital content, namely the digital fingerprinting technology, in order that the issue of digital content is run by natural commercial format. Following are the main result of this thesis:( Introduce the origin, evolvement and states of information hiding and digital fingerprinting technology, summarize the application and class of information hiding, expatiate the relation of the cryptography and information hiding and digital fingerprinting technology.( Introduce the conception and examples of the digital fingerprinting simply, explain the terms in common use, summarize the results of the research, analyze and discuss the strongpoint and shortcoming of all kinds of fingerprinting scheme. ( Analyze and summarize the existing anonymous fingerprinting scheme, design two anonymous fingerprinting scheme.( Analyze the performance of the existing traitors tracing scheme, design two asymmetric public-key traitors tracing scheme.
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