Using transcoding for hidden communication in IP telephony

@article{Mazurczyk2012UsingTF,
  title={Using transcoding for hidden communication in IP telephony},
  author={Wojciech Mazurczyk and Pawel Szaga and Krzysztof Szczypiorski},
  journal={Multimedia Tools and Applications},
  year={2012},
  volume={70},
  pages={2139-2165}
}
The paper presents a new steganographic method for IP telephony called TranSteg (Transcoding Steganography). Typically, in steganographic communication it is advised for covert data to be compressed in order to limit its size. In TranSteg it is the overt data that is compressed to make space for the steganogram. The main innovation of TranSteg is to, for a chosen voice stream, find a codec that will result in a similar voice quality but smaller voice payload size than the originally selected… 
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92 Citations
Highly Influential Citations
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Background Citations
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Methods Citations
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92 Citations

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Using Signature for Hidden Communication Prevention in IP Telephony
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This paper prevents the steganographic method for IP telephony called transcoding steganography (TranSteg), which detects the hidden communication between a VoIP call with signature-based scheme concept.
Influence of speech codecs selection on transcoding steganography
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By considering the codecs which are currently most popular for IP telephony, this paper aims 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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The experimental results demonstrate that the proposed Steganographic algorithm can achieve relatively better IP speech data steganographic transparency and that it can outperform F5-WPC and SWPC approaches.
Pitch-based steganography for Speex voice codec
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The improved version of a steganographic algorithm for IP telephony based on approximating the F0 parameter, which is responsible for conveying information about the pitch of the speech signal, yielded a significantly lower decrease in speech quality, when compared with the original version of HideF0.
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Novel Method of Hiding Information in IP Telephony Using Pitch Approximation
  • A. Janicki
  • Computer Science
    2015 10th International Conference on Availability, Reliability and Security
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It is determined that for Speex working in mode 5 the Hide F0 method can provide a hidden channel with a capacity of ca.
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The experimental results show that the authors' scheme can provide good performance on both steganographic transparency and embedding capacity, and achieve better balance between the two objectives than the existing ones.
Covert Channel in RTP Payload Using a Pointer in Sip Header
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The creation of covert communication channels is the subject addressed by the scientific branch referred to as steganography the results of which can also be applied in IP telephony, using protocols applied across the Internet network.
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