Security Analysis of A Time-bound Hierarchical Key Assignment Scheme

被引：2
|
作者：
Pan, Jeng-Shyang [1 ]
Wu, Tsu-Yang [2 ,3 ]
Chen, Chien-Ming [2 ,3 ]
Wang, Eric Ke [2 ,3 ]
机构：
[1] Fujian Univ Technol, Coll Informat Sci & Engn, Fuzhou 350118, Peoples R China
[2] Harbin Inst Technol, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
[3] Shenzhen Key Lab Internet Informat Collaborat, Shenzhen 518055, Peoples R China
来源：
2015 INTERNATIONAL CONFERENCE ON INTELLIGENT INFORMATION HIDING AND MULTIMEDIA SIGNAL PROCESSING (IIH-MSP) | 2015年
关键词：
hierarchical key assignment; time-bound; bilinear pairing; security analysis; ACCESS-CONTROL; MANAGEMENT;
D O I：
10.1109/IIH-MSP.2015.66
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Recently, Wu et al. proposed a time-bound hierarchical key assignment (TBHKA) scheme which supports discrete time periods. In their scheme, it fused RSA and pairing-based cryptosystems and is provably secure. In this paper, we demonstrate a weakness of Wu et al.'s TBHKA scheme, ie. a collusion attack. Any two users can collude to compute an encryption key to access some class in an un-scribing time period.
引用
收藏
页码：203 / 206
页数：4
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