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

页码：203 / 206

页数：4

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