基于匿名通信的在线匿名秘密交易协议  

Online Anonymous Secret Transaction Protocol Based on Anonymous Communication

作　　者：张德喜[1] 赵秋雨 李晓宇[2] ZHANG Dexi;ZHAO Qiuyu;LI Xiaoyu(School of Information Engineering,Xuchang University,Xuchang 461000,China;School of Information Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]许昌学院信息工程学院,河南许昌461000 [2]郑州大学信息工程学院,河南郑州450001

出　　处：《信阳师范学院学报（自然科学版）》2020年第2期319-326,共8页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(61303232)。

摘　　要：为了保护在线交易中购买方的隐私,提出了一种基于匿名通信的在线匿名秘密交易协议.供货方在公告板发布自己的商品信息,购买方利用基于随机转发的匿名通信模型发送订购信息给供货方.购买方利用混合加密算法将订购消息加密后,发送给网络中的随机选出的一个中转节点,该节点收到之后以概率P转发给随机选出的下一个中转节点,或者以概率1-P直接将消息发送给供货方.重复以上转发过程,直到消息最终到达供货方.供货方、中转节点和攻击者都不可能获取购买方的身份信息和位置信息.中转节点和攻击者都不能获取订购信息.该协议不依赖于特定的网络节点,因而能够有效地平衡网络负载,提高系统的稳定性和可靠性.试验结果表明该协议能够支持网络中多个购买方—供货方之间实现安全的、高效的在线匿名密码交易,而且具有较好的健壮性.An online anonymous secret transaction protocol based on anonymous communication is presented to safeguard the privacy of the purchaser in the online transaction.The supplier introduces his commodity information on a bulletin board.The purchaser sends ordering information to the supplier by an anonymous communication mode based on random relay strategy.The purchaser encrypts the ordering information by mixed encryption algorithm.Then he sends it to a transit node which is chosen from the network at random.After receiving it,the transit node sends it to another transit node chosen out at random with a probability P or sends it to the supplier with a probability 1-P.All transit nodes repeat such process of relation until the ordering information arrives at the supplier.Anyone including the supplier,any transit node and any attacker can’t get the identity and position of the purchaser.Any transit node or attacker can’t get transaction information.The protocol doesn’t depend on specified nodes of network.So it can effectively balance network load and improve the stability and reliability.The experiment data show that the protocol can support the safe effective online anonymous secret transaction between purchasers and suppliers.Moreover it owns better robustness.

关 键 词：匿名秘密交易 匿名通信 中转节点 混合加密算法 转发概率 健壮性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]