一种新的基于P2P系统的小额支付协议

Micropayment model based on P2P systems

由于现有的基于“点对点”(peer to peer,P 2P)网络的小额支付协议具有存在中央瓶颈,缺乏负载平衡机制等缺陷,该文提出了一种新的充分利用P 2P系统特性的小额支付协议CPay。该协议在系统全部节点形成的集合与具有较高性能的节点子集合间建立动态相容哈希映射,每笔交易都需支付方对应的具有较高性能的节点进行校验,从而确保电子货币的任何非法使用都会被及时检测到。协议有效利用了系统的异构性,并能实现负载均衡,利用随机Petri网对CPay进行建模,分析和模拟结果表明CPay相比此前的研究成果具有更低的延迟和更高的吞吐率。

Current P2P micropayment protocols face processing bottleneck and lack a load balance mechanism. A micro-payment protocol, CPay, was developed based on the unique characteristics of P2P systems with a dynamic consistent hashing map between the set of all peers in the system and its subset of high performance peers. In each transaction, the payer＇s corresponding high performance peer checks the transaction to provide timely detection of illegal use of e-coins. The protocol effectively exploits the heterogeneity of the P2P system to achieve load balancing. A stochastic Petri net model of CPay showed CPay has lower latency and higher throughput than previous methods.