MD5加密算法及其在RADIUS协议中的应用

MD5 Encryption Algorithm and Application in RADIUS Protocol

拨号上网用户要将用户名、密码等敏感信息进行传输,这就需要对信息进行加密并认证用户的身份。远程认证拨号接入用户服务协议是目前应用最广泛的身份验证和授权拨号网络用户的方法。在某园区的拨号上网系统的实现中,文章利用MD5加密算法的定长输出特性,对拨号用户的用户名、密码等信息实现了加密传输,在带宽受限的情况下,保证了网络数据的安全性和用户认证的效率。

The user name,password and other sensitive information must be sent to Network Access Server(NAS)for Au-thentication,Authorization and Accounting(AAA)when user dial to Internet Service Provider(ISP).RADIUS protocol is widely used in various AAA systems of networks access devices.The author designs and implements a RADIUS server in a local network access system with MD5encryption algorithm.The system ensures the effectivity of user authentication and se-curity of data transfer even in bandwidth limited environments.