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An Efficient Broadcast Encryption Supporting Designation and Revocation Mechanisms

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In this paper our objective is to explore approaches of secure group-oriented communication with designation and revocation mechanisms simultaneously. We present a new scheme of Revocation-based broadcast encryption (RBBE) which is designed on Dan Boneh et al.'s scheme with the designation mechanism proposed in 2005. We combine two above-mentioned schemes into a new cryptosystem, called Dual-mode broadcast encryption (DMBE). Based on these work, we reach the following conclusions. We use the DMBE scheme as an example to show that it is feasible to construct a broadcast en-cryption scheme that supports designation and revocation mechanisms simultaneously. The cryptosystem with dual modes is more efficient than that with single mode over computational costs, and the performance is improved to at most O((「)N/2(」)), where N is the total number of users in the system. We prove completely that both the RBBE scheme and the DMBE scheme are semantically secure against chosen plaintext attack with full collusion under the decisional bilinear Diffle-Hellman exponent assumption.

CryptographyBroadcast encryptionProvable securityRevocationDesignationDual modes

ZHU Yan、YU Ruyun、CHEN E、HUANG Dijiang

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School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China

School of Computing Informatics and Decision System Engineering, Arizona State University, Tempe, Arizona 85287, USA

National Natural Science Foundation of ChinaNSFC-Genertec Joint Fund for Basic ResearchNSFC-Joint Research Fund for Overseas Chinese Scholars and Scholars in Hong Kong and Macao

61472032U163610461628201

2019

10.1049/cje.2019.02.005

中国电子杂志(英文版)

中国电子杂志(英文版)

CSTPCDCSCDSCIEI
ISSN：1022-4653
年,卷(期)：2019.28(3)
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