In this paper, an analysis of the procedure and security of IMS (Internet protocol multimedia subsystem) authentication and key agreement protocol has been made.

本文分析了IMS认证与密钥分配协议的过程，找出了认证协议中的安全缺陷，并给出了攻击者可能进行的攻击。

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In connection with the requirements on personal communications, an implementation of an authentication and key agreement protocol based on public key cryptosystem is given.

本文针对个人通信系统的需求，给出一种基于公钥体系的认证和密钥约定协议的实现方案。

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This paper proposed a new authentication and key agreement protocol which can realize mutual authentication and generate a secure session key agreed by both sides of communication.

提出了一种新的身份认证与密钥协商协议，该协议可以实现通信双方的相互认证，并通过协商产生安全的会话密钥。

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