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An Anonymous Asymmetric Fingerprinting Scheme with Trusted Third Party  

Yong, Seung-Lim (이화여자대학교 컴퓨터학과)
Lee, Sang-Ho (이화여자대학교 컴퓨터학과)
Publication Information
Journal of KIISE:Computer Systems and Theory / v.34, no.7, 2007 , pp. 288-295 More about this Journal
Abstract
The illegal copying and redistribution of digitally-stored information is a crucial problem to distributors who electronically sell digital data. fingerprinting scheme is a technique which supports copyright protection to track redistributors of electronic information using cryptographic techniques. Anonymous asymmetric fingerprinting scheme prevents the merchant from framing a buyer by making the fingerprinted version known to the buyer only. And this scheme allows the buyer to purchase goods without revealing her identity to the seller. In this paper, a new anonymous asymmetric fingerprinting scheme with TTP is introduced. The buyer's fingerprint is generated by the Fingerprint Certificate Authority which is a TTP. When the seller embeds the fingerprint in the digital data, the protocol uses the homomorphic encryption scheme. Thus the seller cannot know the buyer's fingerprint and the buyer's anonymity is guaranteed by using anonymous key pair.
Keywords
Anonymous asymmetric fingerprinting; Trusted third party; Copyright protection;
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