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The article presents a complex system of two-way authentication operating in IEEE 802.11 wireless networks and making use of the network steganography methods. System assumptions, its general working principle and purpose of additional authentication performed in a covert manner are demonstrated herein. The steganography methods are described here in detail: a method using Probe Request frames, a...
For extremely sensitive applications, it may be advantageous for users to transmit certain types of data covertly over the network. This provides an additional layer of security to that provided by the different layers of the protocol stack. In this paper we present a covert side channel that uses the 802.11 MAC rate switching protocol. The covert channel provides a general method to hide communications...
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