以即時資訊隱藏技術改進網路通話G.711編碼之安全機制研究

Improved VoIP Security with Real-time Speech Hiding in G.711

王鐘逸(Chungyi Wang)

指導教授 ： 吳坤熹

國立暨南國際大學/科技學院/資訊工程學系/碩士(2007年)

https://doi.org/10.6837/NCNU.2007.00269

摘要

在即時溝通系統中，即時音訊隱藏指的是將秘密音訊藏入掩護音訊。藉由將秘密音訊藏入掩護音訊中，我們可以得到一個聽起來有意義並且與掩護音訊相同的隱匿音訊。因此，即使攻擊者在網際網路上擷取到音訊封包，他仍然無法察覺到內容含有秘密音訊。本篇論文提出了一種即時音訊隱藏的方法，應用在Voice over Internet Protocol (VoIP)的即時通訊系統上。

關鍵字

資訊隱藏 ； 即時音訊

並列摘要

Speech hiding is a powerful information protection mechanism in real-time communication systems. By hiding one secret speech into the cover speech, we can get a stego speech, which sounds meaningful and indistinguishable from the original cover speech. Therefore, even if attackers intercept the audio packets on Internet, they would not notice that there is another speech hidden inside those packets. In this thesis, we propose a scheme for speech hiding in a real-time communication system such as voice over Internet Protocol (VoIP).

並列關鍵字

AES ； G.711 ； information hiding ； Linphone ； real-time speech ； Speex ； steganography ； VoIP

參考文獻

1. CNSS Policy No. 15, Fact Sheet No. 1, National Policy on the Use of the Advanced Encryption Standard (AES) to Protect National Security Systems and National Security Information , June 2006

[http://www.cnss.gov/Assets/pdf/cnssp_15_fs.pdf]

2. F.A.P. Peticolas, R.J. Anderson, and M.G. Kuhn, “Information Hiding – A Survey”, IEEE Trans. Proc. Thy, Vol. 87, No.7, pp. 1062-1078, July 1999.

3. Christian Grothoff, Krista Grothoff, Ludmila Alkhutova,Ryan Stutsman, and Mikhail J. Atallah. “Translation-based steganography”. In Proceedings of Information HidingWorkshop (IH 2005), pages 213–233. Springer-Verlag, 2005.

4. Bao, P.and Xiaohu Ma, “MP3-resistant music steganography based on dynamic range transform”, IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2004), 18-19 Nov. 2004, pp.266-271.