Multimedia tools and applications, 2014-06, Vol.70 (3), p.2139-2165
2014
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Details
- Autor(en) / Beteiligte
- Titel
- Using transcoding for hidden communication in IP telephony
- Ist Teil von
- Multimedia tools and applications, 2014-06, Vol.70 (3), p.2139-2165
- Ort / Verlag
- Boston: Springer US
- Erscheinungsjahr
- 2014
- Quelle
- SpringerNature Journals
- Beschreibungen/Notizen
- The paper presents a new steganographic method for IP telephony called TranSteg ( Tran scoding Steg anography). 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.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1380-7501eISSN: 1573-7721DOI: 10.1007/s11042-012-1224-8Titel-ID: cdi_proquest_miscellaneous_1567057548
- Format
- –
- Schlagworte
- Analysis, Applied sciences, Bandwidths, Codec, Coding, codes, Communications networks, Compressed, Computer Communication Networks, Computer Science, Computer science, control theory, systems, Computer systems and distributed systems. User interface, Cryptography, Data Structures and Information Theory, Exact sciences and technology, Information, signal and communications theory, Internet telephony, Memory and file management (including protection and security), Memory organisation. Data processing, Methods, Multimedia computer applications, Multimedia Information Systems, Payloads, Protocol, Signal and communications theory, Software, Special Purpose and Application-Based Systems, Spectrum allocation, Spread spectrum, Steganography, Streams, Studies, Telecommunications and information theory, Telephony, Verbal communication, Voice, VoIP (protocol)