Electronic Commerce Research and Applications
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Most of current technologies that enable secure information sharing assume that entities that share information are mutually trustworthy. However, in recent applications this assumption is not realistic. As applications become sophisticated, information systems are required to share information securely even among untrustworthy entities. The problem is to keep the entities' credit card information confidential while ensuring fraud protection. This paper discusses one kind of problem about information sharing among untrustworthy entities, i.e. fraud protection in anonymous auctions.