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| improving performance of network covert timing channel through huffman coding | |
| Jingzheng Wu; Yongji Wang; Liping Ding; Xiaofeng Liao | |
| 2011 | |
| Source | Mathematical and Computer Modelling
 |
| ISSN | 0895-7177 |
| Volume | 55Issue:1-2Pages:69-79 |
| English Abstract | Network covert channel is a mechanism used to transfer covert message violating security policies through network. Performance of a channel is crucial to an attacker. Some studies have improved the performance by advancing the coding mechanism, but few ones have taken account of the redundancy of covert message. This paper introduces Huffman coding scheme to compress the transferred data by exploiting redundancy, and investigates the performance of the network timing channel according to the channel capacity and covertness. A mathematical model of capacity is presented and the effects of the parameters are analyzed. The experiment examines how the network delays and the Huffman coding scheme affect the capacity and covertness, and the results demonstrate that the performance of the timing channel is improved.; Network covert channel is a mechanism used to transfer covert message violating security policies through network. Performance of a channel is crucial to an attacker. Some studies have improved the performance by advancing the coding mechanism, but few ones have taken account of the redundancy of covert message. This paper introduces Huffman coding scheme to compress the transferred data by exploiting redundancy, and investigates the performance of the network timing channel according to the channel capacity and covertness. A mathematical model of capacity is presented and the effects of the parameters are analyzed. The experiment examines how the network delays and the Huffman coding scheme affect the capacity and covertness, and the results demonstrate that the performance of the timing channel is improved. |
| Indexed Type | SCIENCEDIRECT ; EI |
| Keyword | Huffman Coding Network Covert Channel Covert Channel Encoding Capacity Covertness Timing Channel |
| Department | aNational Engineering Research Center for Fundamental Software Institute of Software The Chinese Academy of Science Beijing 100190 China; bGraduate School The Chinese Academy of Science The Chinese Academy of Science Beijing 100190 China; cState Key Laboratory of Computer Science Institute of Software The Chinese Academy of Science Beijing 100190 China |
| Subject | Computer Science ; Mathematics |
| Sponsorship | 863 project2007AA010601; Chinese Academy of SciencesKGCX2-YW-125; Chinese Academy of Sciences Institute of SoftwareYOCX285056 |
| Language | 英语 |
| WOS ID | WOS:000296919500009 |
| Citation statistics | |
| Content Type | 期刊论文 |
| URI | http://ir.iscas.ac.cn/handle/311060/16023 |
| Collection | 中国科学院软件研究所 |
| Recommended Citation GB/T 7714 | Jingzheng Wu,Yongji Wang,Liping Ding,et al. improving performance of network covert timing channel through huffman coding[J]. Mathematical and Computer Modelling,2011,55(1-2):69-79. |
| APA | Jingzheng Wu,Yongji Wang,Liping Ding,&Xiaofeng Liao.(2011).improving performance of network covert timing channel through huffman coding.Mathematical and Computer Modelling,55(1-2),69-79. |
| MLA | Jingzheng Wu,et al."improving performance of network covert timing channel through huffman coding".Mathematical and Computer Modelling 55.1-2(2011):69-79. |
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