On the Distributed Jamming System of Covert Timing Channels in 5G Networks

Shang, Fangjian; Li, Xin; Zhai, Di; Lu, Yang; Donglei, Zhang; Qian, Yuwen

doi:10.1109/icaica50127.2020.9182534

Cited by 1 publication

(1 citation statement)

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“…The covert storage channel [18,19] takes the object of the protocol as a symbol to transmit covert information, such as unused or reserved elements in data packets, data frames, and data segments. The covert timing channel [20] abstracts the time-domain statistical characteristics into symbols to transmit covert information, such as the interval time of protocol data units or protocol instructions [21] or the sequential coding of data packets [22]. Traditional covert communication mainly includes symbol design and channel mode design.…”

Section: Related Workmentioning

confidence: 99%

Cognitive Covert Traffic Synthesis Method Based on Generative Adversarial Network

Tang

Wang

et al. 2021

Wireless Communications and Mobile Computing

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In the intelligent era of human-computer symbiosis, the use of machine learning method for covert communication confrontation has become a hot topic of network security. The existing covert communication technology focuses on the statistical abnormality of traffic behavior and does not consider the sensory abnormality of security censors, so it faces the core problem of lack of cognitive ability. In order to further improve the concealment of communication, a game method of “cognitive deception” is proposed, which is aimed at eliminating the anomaly of traffic in both behavioral and cognitive dimensions. Accordingly, a Wasserstein Generative Adversarial Network of Covert Channel (WCCGAN) model is established. The model uses the constraint sampling of cognitive priors to construct the constraint mechanism of “functional equivalence” and “cognitive equivalence” and is trained by a dynamic strategy updating learning algorithm. Among them, the generative module adopts joint expression learning which integrates network protocol knowledge to improve the expressiveness and discriminability of traffic cognitive features. The equivalent module guides the discriminant module to learn the pragmatic relevance features through the activity loss function of traffic and the application loss function of protocol for end-to-end training. The experimental results show that WCCGAN can directly synthesize traffic with comprehensive concealment ability, and its behavior concealment and cognitive deception are as high as 86.2% and 96.7%, respectively. Moreover, the model has good convergence and generalization ability and does not depend on specific assumptions and specific covert algorithms, which realizes a new paradigm of cognitive game in covert communication.

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