基于实时传输协议的语音保密通信系统设计  

Design of the Speech Secure Communication System Based on Real-time Transport Protocol

作　　者：孙克辉[1] 钱功伟[1] 徐畅[1] 张泰山[1] 

机构地区：[1]中南大学物理科学与技术学院,长沙410083

出　　处：《计算机工程与应用》2006年第1期128-130,211,共4页Computer Engineering and Applications

基　　金：湖南省自然科学基金资助项目(编号:04JJ3077)

摘　　要：为了在互连网上实现语音的实时加密传输,论文采用自适应通信环境库(ACE)实现实时传输协议(RTP),设计了基于该协议的实时语音保密通信系统。语音加密采用数据加密算法与混沌加密算法相结合,将分组加密算法应用到实时数据流通信中,动态改变数据包加密密钥,密钥空间大,抗破译能力强。通过在数据报头中传输迭代次数实现密码同步。测试结果表明,实时语音保密通信系统具有良好的实时通信效果和安全性能。To transport secretly audio signals on Internet,based on Real-time Transport Protocol（RTP） and Adaptive Communication Environment（ACE）,a real time speeeb security communication system is designed.In the part of encryption,the 3DES is combined with chaotic eneryption,and the block encryption algorithm is applied to real time communication.The key of every data package is changed dynamically which has large keys space and strong ability of antiattacking.Encryption synchronization is realized by transporting the iteration number in data package.Tests show that the system has good performances on communication effects and security.

关 键 词：实时传输协议 自适应通信环境 数据加密标准 保密通信 混沌加密 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]