改进的基于自更新哈希链的认证方案  

Improved Authentication Scheme based on Self-updating Hash Chain

作　　者：陈孟奇[1] 严新荣[1] 张彬祥[1] 

机构地区：[1]中国船舶重工集团公司第七二二研究所,湖北武汉430205

出　　处：《信息安全与通信保密》2013年第2期73-75,共3页Information Security and Communications Privacy

摘　　要：针对一些节点计算能力、通信带宽等资源受限的分布式自组网,文中介绍了几种常见的认证思想,并分析了它们的优缺点及适用性。通过采用自更新哈希链和对称密钥技术,提出一种改进的基于自更新哈希链的双向认证密钥协商方案。分析表明,该方案不仅具有较高的安全性能,而且避免了传统非对称算法的复杂运算,只进行简单的哈希哈数和对称密钥算法,大大减少了节点的计算和通信开销,在一定程度上满足资源受限网络的认证需求。To address the limited resources of Ad Hoc network, such as communication width, computing ability, several certification models of Ad Hoc network are described, their advantages and disadvantages also analyzed respectively. An improved mutual authentication and key agreement scheme based on self-updating hash chain is proposed. The analyses show that this scheme adopts hash function and symmetric key algorithm to avoid the complexity of traditional asymmetric key algorithm, and thus noticeably reduces the computational and communicational overhead, and meanwhile the security properties of this algorithm could, to some extent, satisfy the authentication demand under limited resources of Ad Hoc network.

关 键 词：分布式自组网 认证 自更新哈希链 对称密钥 

分 类 号：TN918.1[电子电信—通信与信息系统]