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PBS: Private Bartering Systems

机译:PBS:私人物物交换系统

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摘要

Barter trade is a growing part of the world economy. Hundreds of thousands of companies in the US alone participate in barter. Barter is also used in other domains, such as resource management in distributed systems. Existing algorithms for finding barter trades require that values of goods are publicly known (whether they are set by a global function or individual utility functions for each user). The fact that each user must reveal her utility function in order to find barter trades is a potential disincentive to using bartering. We present a first step in the creation of a privacy-preserving bartering system. We present algorithms and privacy-preserving protocols in the honest but curious model for determining the existence of win-win trades (and algorithms and protocols for finding such trades). We discuss a number of remaining open problems and extensions for future work.
机译:易货贸易是世界经济的增长部分。仅在美国就有成千上万的公司参加易货贸易。易货还用于其他领域,例如分布式系统中的资源管理。现有的用于查找易货贸易的算法要求商品价值是公开已知的(无论是通过全局功能设置还是为每个用户使用单独的效用功能设置)。每个用户必须显示其实用功能才能找到易货交易的事实可能会阻碍使用易货交易。我们提出了创建保护隐私的易货系统的第一步。我们以诚实但好奇的模型介绍了算法和隐私保护协议,以确定双赢交易的存在(以及发现此类交易的算法和协议)。我们讨论了许多尚待解决的问题和将来的扩展。

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