Using transcoding for hidden communication in IP telephony

The typical approach to steganography is to compress the covert data in order to limit its size, which is reasonable in the context of a limited steganographic bandwidth. Trancoding steganography (TranSteg) is a new IP telephony steganographic method that was recently proposed that offers high steganographic bandwidth while retaining good voice quality. In TranSteg, compression of the overt data is used to make space for the steganogram. In this paper we focus on analyzing the influence of the selection of speech codecs on hidden transmission performance, that is, which codecs would be the most advantageous ones for TranSteg. Therefore, by considering the codecs which are currently most popular for IP telephony we aim to find out which codecs should be chosen for transcoding to minimize the negative influence on voice quality while maximizing the obtained steganographic bandwidth.

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“…In this study we used the most common option, 32 kbps, which was already tried with TranSteg in [27].…”

Section: Experiments Methodologymentioning

confidence: 99%

Influence of speech codecs selection on transcoding steganography

2014

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“…In this method the open data is compressed which makes space for the steganogram and at the receiver end the steganogram is extracted and the original data is restored. [9,1]. In the Fig.…”

Section: Transteg (Transcoding Steganography)mentioning

confidence: 99%

“…This work idea is implemented by Mazurczyk et.al. [21] through transcoding. Transcoding replaced original codec with another codec which seems like the original codec.…”

Section: Storage Based Covert Channelmentioning

confidence: 99%

Network Steganography and its Techniques: A Survey

Singh¹,

Bhardwaj²,

Raghav³

2017

IJCA

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With the ongoing increase of threats and vulnerabilities to our information security, the need for a strong, secure and an effective kind of approach is highly required. An approach that fulfills all these parameters is a byproduct of the trending steganography technique. As there is the availability of various types of cover media, but this paper focuses only on one such media, which is a 'network'. Using the network as the cover media for hiding the data for transmission of the secret information safely, is one of the smart moves towards the information security. This approach is known as network steganography. Since the intruders try every bit to take the advantage of that secret information, this concept of network steganography provides the concealment of the secret data by using the covert channel which uses the bandwidth of other permissible communication channels for the transmission purpose. This paper is on network steganography depicting all the proposed methods available for the network steganography along with the process of concealing the secret information in the desired communication protocol.

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“…One of the steganographic methods of this kind is TranSteg (Transcoding Steganography), [MaSS12] which is based on the general idea of transcoding (lossy compression) of the voice data from a higher bit rate codec, and thus greater voice payload size, to a lower bit rate codec with smaller voice payload size (which should be performed with the least degradation in voice quality possible). In other words, compression of the covert data is utilized to free space for hidden data bits.…”

Section: Popular Internet Servicesmentioning

confidence: 99%

Hidden and Uncontrolled – On the Emergence of Network Steganographic Threats

Wendzel

Mazurczyk

Caviglione

et al. 2014

ISSE 2014 Securing Electronic Business Processes

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Network steganography is the art of hiding secret information within innocent network transmissions. Recent findings indicate that novel malware is increasingly using network steganography. Similarly, other malicious activities can profit from network steganography, such as data leakage or the exchange of pedophile data. This paper provides an introduction to network steganography and highlights its potential application for harmful purposes. We discuss the issues related to countering network steganography in practice and provide an outlook on further research directions and problems.

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Using transcoding for hidden communication in IP telephony

Cited by 79 publications

References 31 publications

Influence of speech codecs selection on transcoding steganography

Influence of speech codecs selection on transcoding steganography

Network Steganography and its Techniques: A Survey

Hidden and Uncontrolled – On the Emergence of Network Steganographic Threats

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