在网络环境下,要实现安全通信,防止信息的泄露,需要采取身份验证,访问控制、信息加密等安全措施,其中身份验证是网络环境下的构造安全机制的基础,而所有的验证机制都是通过通信双方共享某些秘密信息来使得通信双方建立一条安全的信道。 本文介绍了几种身份验证模型,并提出了一种适合于大规模网络环境的验证模型。 In the network environment, in order to realize secure communication and prevent information leakage, security measures such as authentication, access control and information encryption are needed. Authentication is the basis for constructing security mechanism under the network environment, and all the authentication mechanisms are By sharing some secret information by both communication parties, the communication parties can establish a safe channel. This article describes several authentication models and presents a verification model suitable for large-scale network environments.