基于Rabin和DH协议的身份验证和密钥协商方案

Authentication and Key Distribution Scheme Based on Rabin and DH Protocol

提出了一种具有身份验证的密钥协商方案,并证明了其安全性。该方案的特点是:(1)在离散对数问题难解的假设前提下。可抵抗被动攻击和主动攻击;(2)身份验证与密钥协商紧密结合;(3)认证服务中心负责签发证书,但不直接参与身份验证和密钥协商过程;(4)只需要两次模指数运算。

In this paper, a key agreement scheme with authentication is proposed and the security is proved. This scheme has the following properties; (l)Under the assumption that discrete logarithm is difficut, the scheme is secure enough to resist passive attacks and active attacks; (2)Authen-tication and key agreement is combined; (3)Authentication service centre will issuse certificates instead of invovles authentication and key agreement; (4)Requres only two exponenations.