摘要
为了保护电子拍卖过程中投标者的隐私,以及防止投标者中标后反悔,本文从利用签名技术和位承诺协议, 提出了一个安全有效的匿名拍卖协议。该协议不仅保证了标价的保密性和可验证性,投标者对所投标价的不可否认 性和匿名性,而且保证了在整个拍卖过程中,无人可以操纵其他人的投标。即使某一投标者与拍卖代理相互勾结, 也不会影响协议的安全性和有效性。更为重要的是,该协议遵循第二价位原理,从而使商品分配达到最优。与先前 的工作相比,该协议具有更好的扩展性和效率,适合于分布式的网上拍卖。
The protection of bidder privacy and the prevention of bidder default are the keys in the designing of secure auction protocol. But up to now, the research on both of them is still very weak. Aiming at this drawback, this paper designed a new secure and efficient auction protocol. Using the digital signature technology and bit commitment protocol, it not only guarantees the non-repudiation and anonymity of bidders, but also ensures that nobody can manipulate others in the whole auction And also, this protocol achieves the valuable properties of bid secrecy and verifiability. Even when malicious bidders collude with auctioneers, it is still secure and valid. More importantly, this protocol supports the second-price principle and optimal distribution of goods. Compared with previous works, this protocol provides better extensibility and higher efficiency, and is suitable for large-scale distributed auction.
出处
《电子与信息学报》
EI
CSCD
北大核心
2005年第4期666-669,共4页
Journal of Electronics & Information Technology
基金
浙江省自然科学基金(001101352)资助课题
关键词
电子拍卖
匿名性
隐私保护
Bit承诺
Electronic auction, Anonymity, Privacy protection, Bit commitment
