摘要
Simple authenticated key agreement algorithm is one of the Diffie-Hellman key agreement variations. It prevents man-in-the-middle attack with only two more packets required to agree on the secret session key, but it has some weaknesses. In this paper, a new enhanced simple authenticated key agreement algorithm is proposed to overcome these weaknesses on the basis of analyzing the weaknesses of the related protocols. The new enhanced simple authenticated key agreement algorithm can get over replay attack and password guessing attack, provide perfect forward secrecy, and hold the merits of the simple authenticated key agreement algorithm.
Simple authenticated key agrcement algorithm is one of the Diffie-Hellman key agreement variations. It prevents man-inthe-middle attack with only two more packets required to agree on the secret session key, but it has some weaknesses. In this paper, a new enhanced simple authenticated key agreement algorithm is proposed to overcome these weaknesses on the basis of analyzing the weaknesses of the related protocols. The new enhanced simple authenticated key agreement algorithm can get over replay attack and password guessing attack, provide perfect forward secrecy, and hold the merits of the simple authenticated key agreement algorithm.
基金
This work was supported by National"863"High Technology Research and Development Programof China under grant 2002AA145090
关键词
密码术
关键一致协议
证明
信息安全
key agreement protocol, authentication, cryptography.
