20 April 2017 Analysis of the possibility of using G.729 codec for steganographic transmission
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Proceedings Volume 10418, XI Conference on Reconnaissance and Electronic Warfare Systems; 104180M (2017) https://doi.org/10.1117/12.2270069
Event: Conference on Reconnaissance and Electronic Warfare Systems, 2016, Oltarzew, Poland
Abstract
Network steganography is dedicated in particular for those communication services for which there are no bridges or nodes carrying out unintentional attacks on steganographic sequence. In order to set up a hidden communication channel the method of data encoding and decoding was implemented using code books of codec G.729. G.729 codec includes, in its construction, linear prediction vocoder CS-ACELP (Conjugate Structure Algebraic Code Excited Linear Prediction), and by modifying the binary content of the codebook, it is easy to change a binary output stream. The article describes the results of research on the selection of these bits of the codebook codec G.729 which the negation of the least have influence to the loss of quality and fidelity of the output signal. The study was performed with the use of subjective and objective listening tests.
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Zbigniew Piotrowski, Michał Ciołek, Jerzy Dołowski, Jarosław Wojtuń, "Analysis of the possibility of using G.729 codec for steganographic transmission", Proc. SPIE 10418, XI Conference on Reconnaissance and Electronic Warfare Systems, 104180M (20 April 2017); doi: 10.1117/12.2270069; https://doi.org/10.1117/12.2270069
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