移动通信网中的认证与密钥分配

On User Authentication and Key Distr ibution Protocal for Portable Communication System

基于椭圆曲线密码体制,提出了适用于数字移动通信网的一种用户认证与密钥分配协议,该协议有以下特点:①实现了网络和用户的双向认证,②采用数字签名,用户对业务具有不可否认性,③由于利用椭圆曲线公开密钥密码算法,使得在同样的安全水平下,可以减小密钥长度,加快计算速度,适应移动通信系统环境。

Based on elliptic curve cryptosyste m,this paper presents an efficient protocol for mutual authentication and key establishme nt.The protocol is suitable for mobi le communication environment in that①mutual authentication and key confi rmation between network and user.②user' s signature provides non -repudiation of the signed data.③the utilization of elliptic curve cryptosystem make it possible to re-duce the length of key and accelerate the computation.