二维隐蔽时间信道构建的研究  

Research on the Construction of a Two-Dimensional Covert Timing Channel

作　　者：刘莉 徐芹宝 王昌达[1] LIU Li;XU Qinbao;WANG Changda(School of Computer Science and Communication Engineering,Jiangsu University,Zhenjiang 212013)

机构地区：[1]江苏大学计算机科学与通信工程学院,镇江212013

出　　处：《计算机与数字工程》2022年第3期613-618,共6页Computer & Digital Engineering

基　　金：国家自然科学基金项目(编号:61672269);国家重点科研项目(编号:2017YFB1400703);江苏省科技项目(编号:BK20180860)资助。

摘　　要：为了解决传统隐蔽时间信道容量低的问题,提出了一种二维隐蔽时间信道(two-dimensional covert timing channel,2dCTC)。在2dCTC中,采用伪包标识排序和数据包大小变化相结合,构建二维通信介质,然后在康托展开式的基础上,实现了2dCTC中信息传输的编码和解码。论文详细讨论了2dCTC的容量、误码率等通信性能指标。与现有的一维隐蔽时间信道相比,理论分析和实验结果均表明该方案在通信中具有更高的容量。In order to overcome the low channel capacity bottleneck of the traditional covert timing channels(CTCs),a two-dimensional covert timing channel(2dCTC)scheme is proposed.The 2dCTC uses pseudo packet IDs permutation and packet sizes variation together which forms a two-dimensional communication medium to encode and decode the messages through a bijection formed by Cantor expansion.Furthermore,the capacity and channel error rate of 2dCTC are discussed in detail.Compared with the existing one-dimensional CTCs,theoretical analysis and simulation results show that this scheme has higher capacity in communication.

关 键 词：CTC 二维CTC 康托展开式 误码率 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]