收稿日期: 2009-12-21
修回日期: 2010-03-15
网络出版日期: 2010-07-15
基金资助
国家自然科学基金(60703094)资助
Efficient and semantically secure password-based group key exchange protocol
Received date: 2009-12-21
Revised date: 2010-03-15
Online published: 2010-07-15
现有的基于口令的群密钥交换协议大都借助分组密码算法和Hash函数确保协议的安全性. 本文仅借助Hash函数,构造了一种高效、可证明安全的协议. 该协议在随机预言模型下是语义安全的,并能对抗离线字典攻击. 与相关工作比较,本文设计的协议具有更高的计算效率.
关键词： 基于口令的群密钥交换; 可证明安全; 语义安全; 离线字典攻击; 随机预言模型
潘嘉昕 , 马昌社 , 王立斌 . 基于口令的高效语义安全群密钥交换协议[J]. 中国科学院大学学报, 2010 , 27(4) : 547 -555 . DOI: 10.7523/j.issn.2095-6134.2010.4.017
Many existing password-based group key exchange protocols use the symmetric ciphers and Hash functions to maintain their security. An efficient and provably secure password-based group key exchange protocol, using only Hash function, is proposed. It is semantically secure against off-line dictionary attacks in the random oracle model and is more efficient than the related works.
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