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尽管基于对等网络模式(P2P)的电子商务系统获得了巨大的成功,但是由于没有集中式的控制机制,所以容易受到sybil攻击和白洗(whitewashing)攻击.每个商家在购买货物时,总是希望从信任度高的商家进货.但是一些恶意的商家,可以虚构多个身份,进行虚假交易,任意提高自己的信任度.提出一个崭新的交易协议来限制Sybil和白洗攻击的能力.我们把商家间的历史交易关系映射为一个有向图,把评定商家信任度的问题转化为有向图中的最短路径问题.通过理论分析和数据仿真来评价该协议的性能.
Although e-commerce systems based on peer-to-peer networking (P2P) have enjoyed great success, they are vulnerable to sybil attacks and whitewashing attacks because of the lack of a centralized control mechanism.Each merchant purchases goods in total Is to buy from a trustworthy merchant, but some malicious merchants can fake multiple identities, engage in fraudulent deals and arbitrarily increase their trust, proposing a brand new deal agreement to limit Sybil and white wash attacks. The historical trading relationship between businesses is mapped into a directed graph, which transforms the problem of assessing business trust into the shortest path in directed graphs, and evaluates the performance of the protocol through theoretical analysis and data simulation.