Security of Chien's efficient time-bound hierarchical key assignment scheme

被引：44

作者：

Yi, X ^{[1
]}

机构：

[1] Victoria Univ, Sch Comp Sci & Math, Melbourne, Vic 8001, Australia

来源：

IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING | 2005年 / 17卷 / 09期

关键词：

cryptography; hierarchical key assignment;

D O I：

10.1109/TKDE.2005.152

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Recently, Chien proposed a time-bound hierarchical key assignment scheme based on tamper-resistant devices. Without public key cryptography, Chien's scheme greatly reduces computation load and implementation cost. In this paper, we show that Chien's scheme is insecure against a collusion attack whereby three users conspire to access some secret class keys that they should not know according to Chien's scheme.

引用

页码：1298 / 1299

页数：2