Steganography and steganalysis in voice-over IP scenarios: operational aspects and first experiences with a new steganalysis tool set

Dittmann, Jana; Hesse, D.; Hillert, Reyk

doi:10.1117/12.586579

Cited by 48 publications

(40 citation statements)

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“…With the rapid proliferation of Voice over Internet Protocol (VoIP) and other Peer-to-Peer (P2P) audio services such as Skype, covert channels using digital audio may be relatively easy to establish [9]. The inherent redundancy in the audio signal and its transient and unpredictable characteristics imply a high hidden capacity.…”

Section: Detecting Covert Communicationmentioning

confidence: 99%

SIDD: A Framework for Detecting Sensitive Data Exfiltration by an Insider Attack

2009

2009 42nd Hawaii International Conference on System Sciences

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Section: Detecting Covert Communicationmentioning

confidence: 99%

SIDD: A Framework for Detecting Sensitive Data Exfiltration by an Insider Attack

2009

2009 42nd Hawaii International Conference on System Sciences

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“…The first VoIP steganographic methods to utilize the digital voice signal as a hidden data carrier were proposed by Dittmann et al [8]. The authors evaluated the existing audio steganography techniques, with a special focus on the solutions which were suitable for IP telephony.…”

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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“…From the literature [6][7][8], some researchers have noticed the advantages of and carried out useful studies on steganography over VoIP. Wang et al [6] proposed a scheme for transmitting secret speeches based on information hiding in VoIP systems.…”

Section: Introductionmentioning

confidence: 99%

An M-Sequence Based Steganography Model for Voice over IP

Tian

Zhou

Jiang

et al. 2009

2009 IEEE International Conference on Communications

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Abstract-Differing from applying steganography on storage cover media, steganography on Voice over IP (VoIP) must often delicately balance between providing adequate security and maintaining low latency for real-time services. This paper presents a novel real-time steganography model for VoIP that aims at providing good security for secret messages without sacrificing real-time performance. We achieve this goal by employing the well-known least-significant-bits (LSB) substitution approach to provide a reasonable tradeoff between the adequate information hiding requirement (good security and sufficient capacity) and the low latency requirement for VoIP. Further, we incorporate the m-sequence technique to eliminate the correlation among secret messages to resist the statistical detection based on the fact that the distribution of the LSBs in the stego-speech is not uniform and to provide a short-term security protection of secret messages. To accurately recover secret messages at the receiver side, we design a synchronization mechanism based on the RSA key agreement and the synchronized sequence transmission using techniques of the protocol steganography, which can effectively enhance the flexibility of the covert communication system and be extended to other steganography schemes based on real-time systems. We evaluate the effectiveness of our model with ITU-T G.729a as the codec of the cover speech in StegTalk, a covert communication system based on VoIP. The experimental results demonstrate that our techniques provide good security and transparency for transmitting secret messages while adequately meeting the real-time requirement of VoIP. 1

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Steganography and steganalysis in voice-over IP scenarios: operational aspects and first experiences with a new steganalysis tool set

Cited by 48 publications

References 0 publications

SIDD: A Framework for Detecting Sensitive Data Exfiltration by an Insider Attack

SIDD: A Framework for Detecting Sensitive Data Exfiltration by an Insider Attack

Influence of speech codecs selection on transcoding steganography

An M-Sequence Based Steganography Model for Voice over IP

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