The newly improved protocol needs no clock synchronization mechanism between principals and can be efficiently implemented by using an efficient evidence management scheme called evidence chaining.

新的改进使协议不需要时钟同步机制，还能通过使用一种称为证据链的证据管理机制使协议实现效率更高。

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Experimental results show that, this protocol can effectively avoid the problem of clock synchronization when only use timestamp, and good anti-replay attack capacity.

实验结果表明，该协议能避免单纯采用时间戳所带来的时钟同步问题，具有较好的抗重放攻击能力。

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