面向隐私保护的多属性逆向频谱拍卖方案

Privacy-preserving multi-attribute reverse spectrum auction scheme

针对现有的逆向频谱拍卖没有考虑与频谱有关的非价格属性的问题和频谱拍卖安全问题,提出了一个面向隐私保护的多属性逆向频谱拍卖方案。首先,将含有频谱价格、与频谱有关的非价格正向属性值作为频谱竞标人的竞标方案并执行拍卖判断频谱赢家。其次,为确保频谱拍卖的安全性,方案利用Paillier门限机制引入一组拍卖人的分治集中式频谱拍卖服务器代替传统单一的第三方代理机构,防止频谱拍卖人与频谱竞标人的“合作欺诈”。所提方案还引入匿名化技术、不经意传输技术的密码学工具,确保频谱拍卖的安全特性,使频谱拍卖安全地执行。对所提方案的安全协议进行安全分析表明,协议具有较强的安全性。对协议进行性能评估,实验结果表明,所提方案在计算开销上优于可应用在频谱拍卖场景下的多属性逆向拍卖安全方案。

Aiming the problem that the existing reverse spectrum auctions do not take the non-price attribute of spectrum into account and the security of spectrum auction,a privacy-preserving multi-attribute reverse spectrum auction was proposed.Firstly,price and non-price positive attributes of spectrum were considered as the bidding scheme of bidders and auctions was performed to judge spectrum winners.Secondly,to ensure the security of the spectrum auction,the Paillier threshold system was used to introduce a group of spectrum auction servers of auctioneers to replace the traditional single third-party agency,which could prevent the fraud collusion between spectrum auctioneers and bidders.The cryptography tools such as the anonymization technology and oblivious transfer were introduced to achieve the secure features,which could make the spectrum auction performed securely.The security analysis shows that the security protocol has strong security.The performance of the protocol is also evaluated,and experimental results show that the security scheme is superior to the multi-attribute reverse auction security scheme that can be applied in the spectrum auction scenario in terms of computational overhead.