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영문 논문지

홈 홈 > 연구문헌 > 영문 논문지 > TIIS (한국인터넷정보학회)

TIIS (한국인터넷정보학회)

Current Result Document : 7 / 27 이전건 이전건   다음건 다음건

한글제목(Korean Title) Designing Rich-Secure Network Covert Timing Channels Based on Nested Lattices
영문제목(English Title) Designing Rich-Secure Network Covert Timing Channels Based on Nested Lattices
저자(Author) Weiwei Liu   Guangjie Liu   Xiaopeng Ji   Jiangtao Zhai   Yuewei Dai  
원문수록처(Citation) VOL 13 NO. 04 PP. 1866 ~ 1883 (2019. 04)
한글내용
(Korean Abstract)
영문내용
(English Abstract)
As the youngest branch of information hiding, network covert timing channels conceal the existence of secret messages by manipulating the timing information of the overt traffic. The popular model-based framework for constructing covert timing channels always utilizes cumulative distribution function (CDF) of the inter-packet delays (IPDs) to modulate secret messages, whereas discards high-order statistics of the IPDs completely. The consequence is the vulnerability to high-order statistical tests, e.g., entropy test. In this study, a rich security model of covert timing channels is established based on IPD chains, which can be used to measure the distortion of multi-order timing statistics of a covert timing channel. To achieve rich security, we propose two types of covert timing channels based on nested lattices. The CDF of the IPDs is used to construct dot-lattice and interval-lattice for quantization, which can ensure the cell density of the lattice consistent with the joint distribution of the IPDs. Furthermore, compensative quantization and guard band strategy are employed to eliminate the regularity and enhance the robustness, respectively. Experimental results on real traffic show that the proposed schemes are rich-secure, and robust to channel interference, whereas some state-of-the-art covert timing channels cannot evade detection under the rich security model.
키워드(Keyword) Covert timing channel   inter-packet delays   rich security model   nested lattice   undetectability  
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