NDLI: A scalable encryption scheme for multi-privileged group communications

Content Provider	Springer Nature Link
Author	Wang, Guojun Du, Qiushuang Zhou, Wei Liu, Qin
Copyright Year	2011
Abstract	In multi-privileged group communications, since users, who can subscribe to different data streams according to their interests, have multiple access privileges, security issues are more difficult to be solved than those in traditional group communications. The common drawback of traditional key management schemes is that they will result in the “one-affect-many” problem, because they use a key graph to manage all the keys in a group, which makes one key being shared by many users. Recently, a key-policy attribute-based encryption (KP-ABE) scheme is proposed to encrypt messages to multiple users efficiently, which has been applied in secure multi-privileged group communications. However, user revocation in KP-ABE is still not resolved when applied to multi-privileged group communications. So, in this paper, by uniquely combining a collusion-resistant broadcast encryption system and a KP-ABE system with a non-monotone access structure, we propose a scalable encryption scheme for multi-privileged group communications (EMGC). Based on the features of different multi-privileged group communication systems, we also propose two constructions for our EMGC scheme. With the two constructions, a system can support a user not only to join/leave a group at will, but also to change his access privilege on demand, and the expenses during rekeying operations are small. Therefore, our scheme, which can accommodate a dynamic group of users, is more applicable to multi-privileged group communications.
Starting Page	1075
Ending Page	1091
Page Count	17
File Format	PDF
ISSN	09208542
Journal	The Journal of Supercomputing
Volume Number	64
Issue Number	3
e-ISSN	15730484
Language	English
Publisher	Springer US
Publisher Date	2011-09-23
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Attribute-based broadcast encryption Multi-privileged group communications Revocation Key-policy attribute-based encryption Programming Languages, Compilers, Interpreters Processor Architectures Computer Science
Content Type	Text
Resource Type	Article
Subject	Theoretical Computer Science Information Systems Hardware and Architecture Software

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