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本文以ISO建议的对等实体鉴别协议为基础,分析了时间标记的设置及校验方法,给出了网中各时钟误差及网络时延所应满足的条件表达式。为使网中各节点时钟可靠地同步,文中提出了在网中设置时钟服务器的方法并给出了时钟信号分配协议。对于时钟或网络时延无法满足条件的网络环境,本文给出了一个不用时间标记的鉴别协议及两种支持签证不定期更换的鉴别协议。
Based on the peer-to-peer authentication protocols proposed by ISO, this paper analyzes the setting and checking methods of timestamps, and presents the conditional expression that each clock error and network delay should satisfy in the network. In order to reliably synchronize the clocks of all nodes in the network, a method of setting a clock server in the network and a protocol of clock signal distribution are given. For the network environment that the clock or network delay can not meet the requirements, this paper presents a time-independent authentication protocol and two authentication protocols that support the occasional replacement of a visa.