Title: Anonymous multi-receiver broadcast encryption scheme with strong security

Authors: Jianhong Zhang; Jian Mao

Addresses: Institution of Imagine Process and Pattern Recognition, North China University of Technology, Beijing 100144, China; The State Key Laboratory of Integrated Services Networks, Xidian University, Xi'an, 710071, China ' School of Electronic and Information Engineering, Beihang University, Beijing 100019, China; The State Key Laboratory of Integrated Services Networks, Xidian University, Xi'an, 710071, China

Abstract: Anonymity is an important way to achieve the privacy protection of identity. Recently, to protect the identities of the receivers, many anonymous multi-receiver ID-based broadcast encryption schemes have been proposed. However, most of existing schemes are shown to not be able to protect the privacy of the receivers, and their schemes are only proven to have IND-sMID-CCA security and ANON-sID-CCA security. To achieve anonymity of the receivers' identities and stronger security proof, in this paper, we first redefine the security notion of the receiver anonymity and make that the definition is stronger than the definition of previous receiver anonymity. Then we propose a novel anonymous multi-receiver ID-based broadcast encryption scheme, and show that our scheme is proven to be secure against the IND-MID-CCA attacks and ANON-ID-CCA attacks in the random oracle model, our security model is stronger than the selective identity attack model on which most of existing schemes are based. Finally, we analyse the performance of our scheme by comparing with four other schemes, the result shows that our scheme is the most efficient one.

Keywords: IND-MID-CCA security; anonymity; anonymous multi-receiver encryption; ID-based cryptography.

DOI: 10.1504/IJES.2017.083737

International Journal of Embedded Systems, 2017 Vol.9 No.2, pp.177 - 187

Received: 11 Aug 2015
Accepted: 15 Oct 2015
Published online: 21 Apr 2017 *

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