将第四章提出的基于对称密码的动态口令认证方案应用于统一认证系统中，构建了一个统一认证系统模型。
Through appling the password authentication scheme which is proposed in the fourth chapter to unification authentication system, we get a model of unification authentication system.
本文主要研究基于动态口令认证的密钥交换协议，该协议既能保证VPN的认证安全，又能保证VPN的传输安全。
This paper mainly focuses on key exchange protocol based on dynamic password authentication, which can insure the security of both authentication and transportation of VPN system.
系统中，用户通过一次动态口令认证，即可访问网站权限范围内所有的应用服务，同时系统也实现了对用户的安全后续认证。
In system, through the universal dynamic password authentication, the user can visit all the services in the visiting range on Web site, the system also implements the secure persist.
目前，动态口令作为最安全的身份认证技术之一，已经被越来越多的行业所应用。
At present, as one of the most secure authentication technologies, dynamic password has been used in more and more industries.
提出了一个安全的动态口令鉴别(认证)方案(SDPA)，该方案适合于不安全的网络信道上鉴别用户身分。
Authors propose a new secure dynamic password authentication (SDPA) scheme suitable for authenticating users over an untrusted network.
口令认证技术是最常用的身份认证技术，它可以分为两大类：静态口令和动态口令，而且动态口令的实现方法很多。
It can be sorted into two classes. : static password authentication and dynamic password authentication. There are a lot of methods to produce dynamic password.
动态口令身份认证体系属于信息安全范畴中的身份识别软件，是基于密钥和时光双（?）因素的身份认证体系。
The dynamic password status authentication system belongs to in the information security domain status recognition software, is based on the key and the time dual factor status authentication system.
研究动态口令随机数生成器、动态口令及指纹序列的加密方案的设计，并对认证系统的性能和安全性进行分析。
The random number generator, the encipherment scheme of the dynamic password and the fingerprint sequence are designed. And the performance and security of the authentication system are analysed.
动态口令身份认证弥补了传统口令身份认证的不足，是一种更安全的身份认证机制。
Dynamic password authentication which makes up the deficiencies of traditional password authentication is a more secure authentication mechanism.
最后，重点介绍基于多级管理的动态口令系统中的中央管理服务器、通信管理服务器和认证服务器这三类核心节点的设计与实现。
Finally, introduced the design and implement of the three core nodes in the new system, including center management server, communication management server and authentication server.
最后，重点介绍基于多级管理的动态口令系统中的中央管理服务器、通信管理服务器和认证服务器这三类核心节点的设计与实现。
Finally, introduced the design and implement of the three core nodes in the new system, including center management server, communication management server and authentication server.
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