Journal on Communications ›› 2016, Vol. 37 ›› Issue (11): 146-155.doi: 10.11959/j.issn.1000-436x.2016231

• academic paper • Previous Articles     Next Articles

Anti-packet-loss joint encoding for voice-over-IP steganography

Zhan-zhan GAO1,Guang-ming TANG1,Wei-wei ZHANG2   

  1. 1 PLA Information Engineering University, Zhengzhou 450001, China
    2 Graduate Brigade, PLA University of Foreign Languages, Luoyang 471003, China
  • Online:2016-11-25 Published:2016-11-30
  • Supported by:
    The National Natural Science Foundation of China;The Key Scientific and Technological Pro-ject of Henan Province;The Foundation for Military Science Graduate of PLA

Abstract:

VoIP (voice over IP) is a kind of voice communication technology based on UDP/IP protocols. Packet loss will inevitably happen when the channel environment deteriorates, which can pose challenges to the reliable transmission of VoIP steganography. A steganographic model based on joint encoding was proposed. In this model, packet erasure coding was introduced to preprocess the secret data. And the encoded data were embedded into voice packets with minimum dis-tortion using matrix embedding. Furthermore, the influences of key parameters on the performance of joint coding were studied. The selection algorithm for optimal parameters was also given. Experimental results show that the proposed joint coding can effectively improve steganographic resistance to packet loss, and decrease the number of modifications to the voice stream.

Key words: VoIP steganography, joint encoding, packet loss recovery, erasure coding, matrix embedding

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