基于混沌级联的语音频域实时加密系统  

Real-time Encryption System for Audio Frequency Domain Based on Cascaded Chaos

作　　者：金建国[1] 林瑞[1] 张庆凌[2] 侯国强[1] 邸志刚[1] 贾春荣[1] 

机构地区：[1]河北理工大学信息学院,唐山063009 [2]河北理工大学科研处,唐山063009

出　　处：《计算机工程》2009年第11期137-139,共3页Computer Engineering

基　　金：河北省科技攻关计划基金资助项目(062035161D-1);河北省教育厅自然科学基金资助项目(2006427)

摘　　要：针对现有语音实时保密通信系统中系统空载密钥泄漏现象导致容易遭受基于自适应同步控制方法攻击的问题,采用混沌级联对语音频域进行实时加、解密。该方案实现零密钥泄漏,有效抵御了基于自适应同步控制方法的攻击。系统测试分析结果表明,该方案是有效、安全的,优于基于单组混沌系统对时域的加密方法。Aiming at the problem in real-time speech secure communication system, which is attacked by self-adaptive synchronization control method because of no-load condition key leakage, a new scheme adopting cascaded chaotic system to encrypt the audio＇s frequency domain is proposed. The scheme can avoid key leakage, therefore attacks based on self-adaptive synchronization control method can be effectively resisted. The test and analysis results of system indicate that this scheme is more effective and safer than the encryption method in time domain based on single chaotic system.

关 键 词：语音通信 混沌 傅里叶变换 频域加密 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]