Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

6-2016

Abstract

In this paper, we present the notion of recipient-revocable identity-based broadcast encryption scheme. In this notion, a content provider will produce encrypted content and send them to a third party (which is a broadcaster). This third party will be able to revoke some identities from the ciphertext. We present a security model to capture these requirements, as well as a concrete construction. The ciphertext consists of k + 3 group elements, assuming that the maximum number of revocation identities is k. That is, the ciphertext size is linear in the maximal size of R, where R is the revocation identity set. However, we say that the additional elements compared to that from an IBBE scheme are only for the revocation but not for decryption. Therefore, the ciphertext sent to the users for decryption will be of constant size (i.e.,3 group elements). Finally, we present the proof of security of our construction.

Keywords

Constant Size, Identity-based Broadcast Encryption, Recipients, Revocation

Discipline

Information Security

Research Areas

Information Systems and Management

Publication

Proceedings of the 11th ACM Asia Conference on Computer and Communications Security, Xi’an, China, 2016 May 30-June 03

First Page

201

Last Page

210

ISBN

9781450342339

Identifier

10.1145/2897845.2897848

Publisher

Association for Computing Machinery, Inc

City or Country

Xi'an

Additional URL

http://doi.org/10.1145/2897845.2897848

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