Abstract
In 2005, Germany introduced a new Amateur Radio Ordinance prohibiting encrypted radio traffic at home. Crypto-bans can be circumvented using steganography. However, present steganographic methods are not eligible because the embedded message will not survive the usual distortions in a radio transmission. Robust as current watermarking methods are, they leave clearly detectable traces and have a smaller capacity.
This paper presents measures that improve the robustness of steganographic communication with respect to non-intentional, random channel errors and validates their effectiveness by simulation. For the scenario of a radio communication, we determine practicable parameters for least detectability under six different short wave conditions. The resulting method embeds messages with a length of up to 118 bytes in a narrow-band Slow Scan Television connection in Martin-M1 mode.
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Westfeld, A. (2007). Steganography for Radio Amateurs— A DSSS Based Approach for Slow Scan Television. In: Camenisch, J.L., Collberg, C.S., Johnson, N.F., Sallee, P. (eds) Information Hiding. IH 2006. Lecture Notes in Computer Science, vol 4437. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74124-4_14
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DOI: https://doi.org/10.1007/978-3-540-74124-4_14
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