Vice over IP

Lubacz, Józef; Mazurczyk, Wojciech; Szczypiorski, Krzysztof

doi:10.1109/mspec.2010.5397787

Cited by 36 publications

(28 citation statements)

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“…The other encodes secret messages by varying packet rates, which is equivalent to modulating the inter-packet times. In the VoIP scenario, the former has been popularly implemented in IP [4,22,23], RTP/RTCP [22,24,25,26] and SIP with SDP [27]. In contrast, the application of the latter is comparatively rare, possibly considering the QoS (Quality of Service) of VoIP.…”

Section: Related Workmentioning

confidence: 99%

Improved adaptive partial-matching steganography for Voice over IP

Tian

Qin

Guo

et al. 2015

Computer Communications

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Section: Related Workmentioning

confidence: 99%

Improved adaptive partial-matching steganography for Voice over IP

Tian

Qin

Guo

et al. 2015

Computer Communications

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“…They discovered that a combination of information hiding solutions provides a capacity to covertly transfer about 2000 bits during the signaling phase of a connection and about 2.5 kbit/s during the conversation phase. In [25], a novel method called lost audio packets steganography (LACK) was introduced; it was later described and analyzed in [23] and [21]. LACK relies on the modification of both the content of the RTP packets and their time dependencies.…”

Section: Related Workmentioning

confidence: 99%

Influence of speech codecs selection on transcoding steganography

2014

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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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“…They discovered that a combination of information hiding solutions provides a capacity to covertly transfer about 2000 bits during the signalling phase of a connection and about 2.5 kbit/s during the conversation phase. In [31], a novel method called LACK (Lost Audio Packets Steganography) was introduced; it was later described and analysed in [29] and [26]. LACK relies on the modification of both: the content of the RTP packets, and their time dependencies.…”

Section: Related Workmentioning

confidence: 99%

“…Network steganography, to perform hidden communication, utilizes network protocols and/or relationships between them as the carrier for steganograms. Because of its popularity, IP telephony is becoming a natural target for network steganography [26]. Steganographic methods are aimed at hiding of the very existence of the communication, therefore any third-party observers should remain unaware of the presence of the steganographic exchange [40].…”

mentioning

confidence: 99%

Using transcoding for hidden communication in IP telephony

Mazurczyk

Szaga

Szczypiorski

2012

Multimed Tools Appl

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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. Then, the voice stream is transcoded. At this step the original voice payload size is intentionally unaltered and the change of the codec is not indicated. Instead, after placing the transcoded voice payload, the remaining free space is filled with hidden data. TranSteg proof of concept implementation was designed and developed. The obtained experimental results are enclosed in this paper. They prove that the proposed method is feasible and offers a high steganographic bandwidth while introducing small voice degradation. Moreover, TranSteg detection is difficult to perform when compared with existing VoIP steganography methods.

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Vice over IP

Cited by 36 publications

References 0 publications

Improved adaptive partial-matching steganography for Voice over IP

Improved adaptive partial-matching steganography for Voice over IP

Influence of speech codecs selection on transcoding steganography

Using transcoding for hidden communication in IP telephony

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