利用匿名通信的匿名电子拍卖协议  

Anonymous Electronic Auction Protocol Based on Anonymous Communication

作　　者：王小丽 李晓宇[1] WANG Xiao-li;LI Xiao-yu(Zhengzhou University,School of Information Engineering,Zhengzhou 450000,China)

机构地区：[1]郑州大学信息工程学院

出　　处：《小型微型计算机系统》2020年第1期85-91,共7页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61472412)资助;河南省教育厅自然科学基金项目(14A520012)资助

摘　　要：为了保护电子拍卖中竞拍者的身份隐私,提出了一个基于匿名通信的匿名电子拍卖协议.该协议在密封式拍卖方式的基础上,采用匿名通信模型进行通信.在整个通信过程中,竞拍者随机选取网络中的一个节点进行数据的转发,然后该中转节点再以概率Pf将数据发送给下一个中转节点或是以概率1-Pf将数据发送给拍卖服务器,下一个中转节点重复该中转节点的过程,直到最后一个中转节点将数据发送给拍卖服务器.在发送数据的过程中,使用AES算法和RSA算法分别对消息和密钥进行混合加密解密操作.数据经过多次转发最终到达拍卖服务器.拍卖服务器、任意的中转节点和攻击者都不可能获取竞拍者的身份和位置信息.任意的中转节点和攻击者都不可能获取竞拍者的竞标信息.相比较Crowds、Tor以及其改进的方案,本方案在通信过程中不需要提前建立链路,避免了路由路径上节点建好链路后节点故障而引起的通信失败.通信过程中所有节点都是对等的,并且整个路由路径中不依赖于某些特殊节点,因此该协议实现了网络流量的负载均衡且大大提高了网络的健壮性.理论分析和实验结果表明,该协议不仅稳定性较好,而且可以在较低的通信和计算代价下获得较好的匿名效果.In order to protect the identity privacy of bidders in electronic auctions,an anonymous electronic auction protocol based on anonymous communication is proposed.The protocol uses an anonymous communication model for communication based on the sealed auction method.During the whole communication process,the bidder randomly selects one node in the network to forward the message,and then the transit node sends the message to the next transit node with the probability of Pfor to the auction server with the probability of 1-Pf.The next transit node repeats the process of the transit node until the last transit node sends the message to the auction server.When transmitting message,the AES algorithm and the RSA algorithm are used to perform a hybrid encryption and decryption operation on the message and the key.The message is forwarded for many times until it reaches the auction server.It is impossible for the auction server,arbitrary transit nodes,and attackers to obtain the identity and location information of the bidder.It is impossible for arbitrary transit nodes and attackers to obtain the bid information of the bidder.Compared with Crowds,Tor and its improved scheme,the scheme does not need to establish a link in advance in the communication process,and avoids the communication failure caused by the node failure after the node is established on the routing path.In the process of communication,all nodes are equipotent,and the whole routing path does not depend on some special nodes.Therefore,the protocol achieves load balancing of network traffic and greatly improves the robustness of the network.Theoretical analysis and experimental results showthat the protocol not only has good stability,but also can obtain better anonymity at lower communication and computational cost.

关 键 词：匿名通信 电子拍卖 随机选择策略 混合加密技术 匿名度 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]