基于主流社交VoIP的安全实时隐蔽通信理论与方法研究

微信，QQ等社交VoIP（Voice over IP）应用的普及为隐蔽通信提供了新的载体。基于语音聊天、视频聊天等VoIP通信可实现实时的隐蔽通信。现有VoIP隐蔽通信技术主要基于VoIP通信协议数据或自搭建的VoIP通信系统，存在安全性问题。本项目研究基于主流VoIP应用的安全实时隐蔽通信的理论和关键技术，构建VoIP隐蔽通信模型；突破主流VoIP应用中隐蔽信道建立技术；分析主流VoIP应用的隐蔽载体信道特性；实现基于SILK语音编码压缩域的安全隐写算法。项目研究可充分利用主流VoIP应用的海量用户和海量通信数据、稳定可靠的网络通信基础服务、实时流媒体通信所提供的隐蔽、稳定、实时的载体通信信道。项目将传统的存储式隐蔽通信模式转变为实时交互的隐蔽通信模式，是对现有隐蔽通信模式的变革。研究成果可应用于国家政府的重要部门，为利用公共互联网络进行重要数据的安全保密传输提供新思路和新技术。

The popularity of social VoIP (Voice over IP) applications, such as WeChat, QQ and so on, provides a new carrier for covert communication. VoIP services, such as voice-chat or video-chat, provide realtime communication, so it can provide carrier for realtime covert communication. The existing VoIP covert communication technology is mainly based on the data of the VoIP communication protocol or the self-built VoIP communication system, and there exist many security problems.The project researches on the theory and technology of secure realtime covert communication based on the mainstream VoIP applications. The research content includes the mathmatical model of VoIP covert communication, the data interception technology of mainstream VoIP applications, the characteristic analysis of the hidden carrier, the algorithm of secure steganography based on SILK compressed coefficients.The project can make full use of the benefits of mainstream VoIP applications, using its massive users and massive communication data to get better concealment, using its stable and reliable basic network communication service to get stable covert communication channel, using its realtime streaming media communication to provide realtime covert channel. The project transforms the traditional covert communication mode into a realtime interactive covert communication mode, which is an important change to the existing covert communication mode. The research results can be applied to some important application fields, and provide new method and technology for the secure data transmission of important data over Internet.