基于验证元的口令认证密钥交换协议的最基本安全目标是抵抗字典攻击和服务器泄露攻击。
The fundamental security goal of verifier-based password-authenticated key exchange protocol is security against dictionary attack and server compromise attack.
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.
文章简要回顾了密钥管理的基本内容，指出常见的密钥协定协议的不足，详细介绍了基于口令认证的密钥协定协议。
This paper reviews the basic content of key management, points out the limitation of the existing key agreement protocol and introduces password authenticated key agreement in detail.
针对服务器泄漏攻击，给出了抵抗这种攻击的方法，提出了一个新的基于口令的认证密钥协商协议。
Attack, a method of resisting server compromise attack is given and a new password-based authenticated key agreement protocol is proposed.
密钥加密协议的目的是利用安全性低的口令协商安全性高的密钥，进而利用密钥对以后的通信进行加密或身份认证，从而实现安全通信。
Encrypted key exchange protocol's goal is to establish a high secure key used for further encryption and authentication through a low secure password.
在改进原有协议的基础上，提出了一个更加安全和高效的基于口令的跨服务器认证密钥交换协议。
While , compared with the old schemes, the efficency of both is equal, the security of the new schemes is improved quite a lot.
在改进原有协议的基础上，提出了一个更加安全和高效的基于口令的跨服务器认证密钥交换协议。
While , compared with the old schemes, the efficency of both is equal, the security of the new schemes is improved quite a lot.
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