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This page contains all of the posts and discussion on MemeStreams referencing the following web page: Real-time Steganography with RTP. You can find discussions on MemeStreams as you surf the web, even if you aren't a MemeStreams member, using the Threads Bookmarklet.

Real-time Steganography with RTP
by possibly noteworthy at 7:39 pm EDT, Sep 27, 2007

Abstract: Real-time Transfer Protocol (RTP) is used by nearly all Voice-over-IP systems to provide the audio channel for calls. As such, it provides ample opportunity for the creation of a covert communication channel due to its very nature. While use of steganographic techniques with various audio cover-medium has been extensively researched, most applications of such have been limited to audio cover-medium of a static nature such as WAV or MP3 file audio data. This paper details a common technique for the use of steganography with audio data cover-medium, outlines the problem issues that arise when attempting to use such techniques to establish a full-duplex communications channel within audio data transmitted via an unreliable streaming protocol, and documents solutions to these problems. An implementation of the ideas discussed entitled SteganRTP is included in the reference materials.

A recording of the presentation given at DefCon is also available.

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