P-Promise:一个基于承诺的P2P公平资源共享协议

P-Promise:A Promise Based P2P Fair Resource Sharing Protocol

P-Promise 借鉴人类社会个体间相互承诺并通过兑现承诺来实现公平交往的机制.通过定义承诺证书和一套协议原语,在 P2P 实体间建立公平的资源共享环以实现 P2P 公平资源共享。公平的资源共享环的建立过程就是对等实体承诺并不断兑现承诺的过程,不需要可信第三方、认证的身份、货币支付、对称存储关系等条件。承诺证书能够描述不同的资源,所以 P-Promise 可用于各种资源的共享。P-Promise 不但可以用于各种普通计算机.而且适用于资源和计算能力都十分有限的移动设备。分析和实验证明,P-Promise 具有良好的稳定性和抗攻击能力。

P-Promise gets inspiration from society that individuals exchange fairly by promising and acting on it. P- Promise defines promise certificate and a suit of protocol primitive. By using promise certificate and protocol primitive, fair resource sharing ring can be built,and the goal of fair resource sharing can be achieved. The process of building fair resource sharing ring is a process of promising and carrying it out,so P-Promise enforces fairness in P2P resource sharing without requiring trusted third parties,certified identities,monetary payment,and symmetric storage relationships. Promise certificate can describe various kinds of resources, so P-Promise can be applied to a wide range of resource sharing. P-Promise can be used not only with general computer, but also with mobile devices thai have limited resource and computing ability. Analyses and experiment show that P-Promise is steady and can withstand attack.