流媒体信息隐藏的时空概念模型及其应用方法的研究

项目名称： 流媒体信息隐藏的时空概念模型及其应用方法的研究

项目编号： No.61271392

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 黄永峰

作者单位： 清华大学

项目金额： 70万元

中文摘要： -网络信息传输安全已经成为影响国家安全、经济发展、个人利益和社会稳定的重大问题。信息隐藏是继加密技术之后一种新兴信息安全技术，而基于流媒体的隐蔽通信技术成为当前研究热点。本项目针对流媒体信息隐藏的特点，以及信息隐藏理论模型比较缺乏现状，以提高基于流媒体隐蔽通信的隐藏容量、隐蔽性和同步效率为研究目标，建立流媒体信息隐藏的时空概念模型，指导基于VoIP的隐蔽通信实际研发。研究内容包括：建立流媒体信息隐藏的空间概念模型，用来刻画流媒体分组结构多维隐藏特征的特点；建立流媒体信息隐藏的时域概念模型，用来刻画流媒体信息隐藏的动态性和离散化的特点；研究时空概念模型在VoIP隐蔽通信的应用方法，研发一套高隐藏容量、高隐蔽性和高同步效率的VoIP隐蔽通信系统，并对时空概念模型进行实际验证和应用示范。

中文关键词： 流媒体；多维隐藏空间；信息隐藏；隐蔽通信；

英文摘要： Transmission security of network information has become the essential issue affecting national security, economic prosperity, individual interests and social stability. Information Hiding, following Cryptography, is an burgeoning information security technology. And covert communication based on network streaming media is becoming the new research hotspot. There are limited works on theoretical model of information hiding currently. This project focuses on features of network streaming media, engaging in improving capacity, concealment and synchronization efficiency of the covert communication based on the network streaming media. It can guide the engineered research on VoIP-based covert communication, by establishing space-timing model of information hiding on network streaming media. The specific research includes: Establishing the space model of information hiding on network streaming media characterizing the structure of streaming media packetwith multi-dimensional hiding features; Establishing the timing model describing the dynamic and discrete natures of information hiding on streaming media; Studying the implementation approaches in use of spatial and temporal models, developing a VoIP covert communication system with high hiding capacity, imperceptibility and synchronization efficiency, and prototyping

英文关键词： Stream Media；Multi-Dimensional Hiding Space；Information Hiding；Covert Communication；