DES算法在VoIP系统中的嵌入式设计与实现研究  

Research on embedded design and implementation of DES algorithm in VoIP system

作　　者：杜岳涛[1] DU Yuetao(Xi＇an Technological University,Shanxi Xi＇an,71002!)

机构地区：[1]西安工业大学

出　　处：《自动化与仪器仪表》2018年第5期6-9,共4页Automation & Instrumentation

摘　　要：随着现代通信技术的不断发展,通讯安全成为思考的重点。本文以VoIP系统作为研究背景,针对传统VoIP系统中信息加密存在的不足,给系统运行带来严重的安全隐患问题,提出一种基于DES加密的嵌入式系统设计方法。为实现对语音的加密,文章首先分析了VoIP系统中常用的AES和ECC加密算法,并对这两种加密算法的原理特点进行分析。然后结合VoIP系统对语音加密的新要求,提出引入DES加密方法,并给出了加密的过程。在上述分析的基础上,结合DES的原理,从硬件和软件的角度对该加密系统展开设计。在硬件部分中,引入加密模块、FIFO模块、控制模块等,进而完成对算法运行的基础框架搭建;在软件部分,结合DES算法的原理,分别从密钥产生到密钥的解密的进行详细设计,通过其中的desround模块完成加解密。最后,搭建试验环境,对上述的方案进行测试。结果表明输入密钥可得到不同的解密对象,验证了本文设计方法的可行性与正确性,为Vo IP系统的加密提供了新的借鉴。With the continuous development of modern communication technology,communication security has become the focus of thinking.In this paper,taking VoIP system as research background,aiming at the shortcomings of information encryption in traditional VoIP system and bringing serious security risks to system operation,a design method of embedded system based on DES encryption is proposed.In order to achieve voice encryption,the paper first analyzes the commonly used AES and ECC encryption algorithms in VoIP system,and analyzes the principles and characteristics of the two encryption algorithms. Then combined with the new requirements of VoIP system for voice encryption,the DES encryption method is introduced,and the process of encryption is given. On the basis of the above analysis,combined with the principle of DES,the design of the encryption system is designed from the point of view of hardware and software.In the hardware part,introduce the encryption module,FIFO module,control module,and then built the basic framework of running the algorithm; in the software part,combined with the principle of DES algorithm,respectively,from the key to the detailed design of key decryption,through the desround module of the complete encryption and decryption.Finally,the test environment is built and the above scheme is tested.The results show that different encryption objects can be obtained by input key,which verifies the feasibility and correctness of the design method,and provides a new reference for the encryption of VoIP system.

关 键 词：DES算法 密钥 VOIP系统 嵌入式系统 测试 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]