A Privacy Preserving Truthful Spectrum Auction Scheme Using Homomorphic Encryption
A Privacy Preserving Truthful Spectrum Auction Scheme Using Homomorphic Encryption
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DOI：
10.1109/glocom.2014.7417163
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
Xiaoyan Wang;Yusheng Ji;Hao Zhou;Zhi Liu;Yu Gu;Jie Li
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文献类型：
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作者：
Xiaoyan Wang;Yusheng Ji;Hao Zhou;Zhi Liu;Yu Gu;Jie Li
动态频谱再分配是提高频谱利用率的重要途径，频谱所有者可以将频谱资源暂时共享给次用户以获取经济利益。拍卖被认为是一种自然的营销工具，以激励频谱所有者，从而有效地重新分配空闲频谱。在真实频谱拍卖问题中，投标者根据他们对频谱的真实估价进行投标，这一问题已经得到了广泛的研究。然而，个别投标人的真实估价属于私人信息，应加以保护，以免暴露。本文提出了一种利用同态加密的隐私保护真实频谱拍卖方案。建议的计划显示组出价，但隐藏用户的出价，甚至从拍卖。评估结果表明，该方案实现了良好的频谱利用率与低的通信和计算开销。
Dynamic spectrum reallocation, under which the spectrum owners temporarily share the underutilized spectrum to secondary users for economic profit, is an important approach to improve the spectrum utilization ratio. Auction is believed to be a natural marketing tool to incentivize the spectrum owners, and thus redistribute the idle spectrum efficiently. Extensive researches have been done in the problem of truthful spectrum auction, in which the bidders bid based on their true valuations of the spectrum. The true valuation of the individual bidder, however, is a private information which should be protected against exposure. In this paper, we propose a privacy preserving truthful spectrum auction scheme by utilizing homomorphic encryption. The proposed scheme reveals the group bids but hides the users' bids even from the auctioneer. The evaluation results show that the proposed scheme achieves good spectrum utilization efficiency with low communication and computation overheads.