摘要： 研究网络隐蔽时间信道，针对已有隐蔽时间信道同步方法的不足提出一种基于平滑估计算法的同步方法，使发送方以块为单位发送数据，接收方通过平滑估计算法估计接收下一个报文需要的时间间隔。实验结果证明，在一定环境下，与原有方法相比，该方法使无差错传输所需报文间的时间间隔较短，在相同的无差错情况下，其数据传输速率提高了33%。

关键词: 网络隐蔽时间信道, 同步, 平滑估计算法

Abstract: This paper studies the network covert timing channel, aiming at the defect of existing synchronization method of covert timing channel and presents a new synchronization method based on smoothing algorithm. The sender sends data in blocks and the receiver estimates the time interval for receiving the next packet by synchronization method. Experimental results demonstrate that under certain circumstance, compared with previous methods, this method needs shorter inter-packet interval to receive data with no error and increases the speed for data transmission by 33%.

Key words: network covert time channel, synchronization, smoothing estimation algorithm

中图分类号: 

• TP393.0