基于身份的可认证多方密钥协商方案  

ID-based Authenticated Multi-party Key Agreement Scheme

作　　者：赵婷[1] 王晓峰[1] 王尚平[1] 武晓峰[1] 郭虎[1] 

机构地区：[1]西安理工大学理学院,西安710054

出　　处：《计算机工程》2008年第6期164-166,共3页Computer Engineering

基　　金：陕西省自然科学研究计划基金资助项目(2005F02);西安理工大学科技创新基金资助项目(108210402);陕西省教育厅专项科学研究计划基金资助项目(06JK213)

摘　　要：三方密钥协商协议虽然比传统方案高效,但不具有认证功能且易遭受中间人攻击。文章将该协议扩展到多方,提出2个新的基于身份的密钥协商方案。方案中用于实现认证功能的签名是短签名,因此认证过程比较高效。通过引入口令进化机制,提高了安全性。新方案具有等献性、无密钥控制、已知密钥安全、抗中间人攻击等安全特性。The tripartite key agreement protocol is more efficient than previous protocol, but it is unable to authenticate the user＇s identity and is vulnerable to man-in-the-middle attack. This paper extends it to multi-party, and proposes two ID-based key agreement schemes. The new schemes are able to authenticate the user＇s identity, and the signature to realize the function is a short signature, so the executing phase is efficient, Password evolution scheme is introduced in order to improve its security, The new schemes have many properties such as equal contribution, non-key control. against man-in-middle attack, etc.

关 键 词：认证 密钥协商 双线性对 口令进化 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]