摘要： 基于Hash链的电子拍卖方案具有技术简单和计算效率高的优势。分析杨加喜等人提出的一种基于Hash链的电子拍卖方案(计算机工程, 2007年第19期)的安全性缺陷，在其基础上提出具有不可伪造性、不可否认性、时限性、投标者匿名性以及抗合谋攻击的改进方案，并提出进一步的研究思想。
关键词:
密封式拍卖,
Hash函数,
Hash链
Abstract: Electronic auctions based on Hash chain have advantages over non Hash-based schemes due to the simplicity and efficiency of Hash chain. Security flaws of a new electronic auction based on hash chain presented by Yang Jiaxi et al are analyzed, and improved scheme which satisfies properties of bid unforgeability, bid undeniability, bid confidentiality, bidder anonymity and collude attack resistance is presented, and the further research idea is given.
Key words:
sealed-bid auction,
Hash function,
Hash chain
中图分类号:
肖自碧;杨 波;李寿贵. 基于Hash链的电子拍卖安全性分析及改进[J]. 计算机工程, 2009, 35(8): 164-165.
XIAO Zi-bi; YANG Bo; LI Shou-gui. Security Analysis and Improvement of Electronic Auction Based on Hash Chain[J]. Computer Engineering, 2009, 35(8): 164-165.