期刊名称：International Journal of Security and Its Applications
印刷版ISSN：1738-9976
出版年度：2015
卷号：9
期号：1
页码：179-190
DOI：10.14257/ijsia.2015.9.1.19
出版社：SERSC
摘要：Several protocols implementing attribute-based group key exchange, which allows users with certain set of attributes to establish a session key, have been proposed in recent years. However, attacks on attribute-based group key exchange in current research have been considered only in stand-alone fashion. Thus these protocols may be vulnerable when run with other protocol sessions concurrently. We treat the security of attribute-based group key exchange in the universal composability framework to ensure that a protocol remains secure when run with arbitrary protocol sessions concurrently. More specifically, we define an ideal functionality for attribute-based group key exchange first, then propose a two-round protocol based on a primitive called encapsulation policy attribute-based key encapsulation mechanism. In addition, a complete security proof of our protocol in the universal composability framework under random oracle model is given.
关键词：attribute-based group key exchange; universal composability; random ; oracle; encapsulation policy attribute-based key encapsulation mechanism; ACK ; property
