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随着互联网和信息隐藏技术的发展,基于网络协议和流媒体的隐蔽通信软件应用日益广泛。该文针对目前普遍使用的网络通信软件MSN Messenger,研究其中隐蔽通信信道的检测方法。重点探索了微软网络服务(MSN)网络电话(VoIP)语音流的检测方法和语音编码PCM(pulse code modulation)的LSB(least significant bit)信息隐藏算法的检测方法,主要解决了语音流隐蔽通信的在线实时检测问题。该文所提出识别和检测算法,在VoIP流的识别准确率、信息隐藏检测率等方面取得较好结果,能满足实际应用的需要。
With the development of internet and information hiding technology, covert communication software based on network protocol and streaming media is widely used. In this paper, the commonly used network communication software MSN Messenger, research hidden channel detection methods. The detection methods of Microsoft Voice over Internet Protocol (MSN) Voice over Internet Protocol (VoIP) and the least significant bit (LSB) information hiding algorithm of PCM (pulse code modulation) are mainly discussed. Online real-time detection of the problem. The recognition and detection algorithm proposed in this paper has achieved good results in the recognition rate of VoIP streams and detection rate of information hiding, which can meet the needs of practical application.