A Provable Secure ID-Based Explicit Authenticated Key Agreement Protocol Without Random Oracles  

作　　者：田海博 Willy Susilo 明洋 王育民 

机构地区：[1]School of Information Science and Technology, Sun Yat-Sen University [2]Guangdong Key Laboratory of Information Security Technology [3]Centre for Computer and Information Security Research (CCISR), School of Computer Science and Software Engineering University of Wollongong [4]School of Information Engineering, Chang'an University [5]State Key Laboratory on ISN, Xidian University

出　　处：《Journal of Computer Science & Technology》2008年第5期832-842,共11页计算机科学技术学报（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant No. 60473027;by Sun Yat-Sen University under Grant Nos. 35000-2910025 and 35000-3171912.

摘　　要：In this paper, we present an identity-based explicit authenticated key agreement protocol that is provably secure without random oracles. The protocol employs a new method to isolate a session key from key confirmation keys so that there is no direct usage of hash functions in the protocol. The protocol is proved secure without random oracles in a variant of Bellare and Rogaway style model, an exception to current proof method in this style model in the ID-based setting. We believe that this key isolation method is novel and can be further studied for constructing more efficient protocols.In this paper, we present an identity-based explicit authenticated key agreement protocol that is provably secure without random oracles. The protocol employs a new method to isolate a session key from key confirmation keys so that there is no direct usage of hash functions in the protocol. The protocol is proved secure without random oracles in a variant of Bellare and Rogaway style model, an exception to current proof method in this style model in the ID-based setting. We believe that this key isolation method is novel and can be further studied for constructing more efficient protocols.

关 键 词：CRYPTOGRAPHY IDENTITY-BASED key agreement random oracles 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]