Cryptanalysis and improvement on an ID-based key issuing protocol

被引：0
|
作者：
Wang, Licheng [1 ]
Cao, Zhenfu [1 ]
Cao, Feng [1 ]
Qian, Haifeng [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Comp Sci & Engn, 1954 Huashan Rd, Shanghai 200030, Peoples R China
来源：
FIRST INTERNATIONAL MULTI-SYMPOSIUMS ON COMPUTER AND COMPUTATIONAL SCIENCES (IMSCCS 2006), PROCEEDINGS, VOL 2 | 2006年
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1109/IMSCCS.2006.205
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
In this paper we analyze an ID-based key issuing protocol due to Gangishetti et al., designed for eliminating the need of secure channel between PKG and users and avoiding the key escrow problem. Their protocol consists of five sub-protocols, namely System Setup, System Public Key Setup, Key Issuing, Key Securing and Key Retrieving. We show that both the Key Issuing and the Key Securing sub-protocols suffer from impersonation attacks. Further we present an improved key issuing protocol which is proved to be secure against adaptive chosen message attack in the random oracle model under the CDH assumption.
引用
收藏
页码：8 / +
页数：2
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