摘要
密钥交换是通信双方建立会话密钥的过程,Diffie-Hellman协议是一种有代表性的算法,但是这种算法不能够抵抗中间人攻击。为了抵抗中间人攻击,陆续出现了几种具有身份认证功能的算法,但是这些算法运算比较复杂。Seo等提出了一种简单的算法(SAKA),可以抵抗中间人攻击,并且运算简单。但是SAKA以及其的增强算法均有缺陷,该文提出了一种改进算法,在具有原有协议优点的同时可以避免这些缺陷。
Key agreement is the procedure that the two sides of the communication negotiate a session key. Diffie-Hellman key agreement protocol is well known, but this protocol can not resist man-in-the-middle（MID） attack. Several protocols that can escape MID attack have been proposed. Those protocols are complicated. A simple authenticated key agreement algorithm （SAKA） and its enhanced protocols are developed. They are very simple, but some weaknesses are founded. A new protocol based on SAKA is proposed in this paper, which can make up these weaknesses.
出处
《计算机工程》
EI
CAS
CSCD
北大核心
2006年第12期171-172,共2页
Computer Engineering
关键词
密钥协商
认证
中间人攻击
Key agreement
Authentication
Man-in-the-middle attack
