Covert channel for improving VoIP security
نویسندگان
چکیده
In this paper a new way of exchanging information for Voice over Internet Protocol (VoIP) service is presented. With use of digital watermarking and steganography techniques we achieve a covert channel which can be used for different purposes e.g. to improve IP Telephony security or to alternate existing protocols like RTCP (Real-Time Control Protocol). Main advantage of this solution is that it does not consume additional bandwidth and the data transmitted is inseparably bound to the voice content.
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