Generic anonymous identity-based broadcast encryption with chosen-ciphertext security

Kai He, Jian Weng, Man Ho Allen Au, Yijun Mao, Robert H. Deng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

8 Citations (Scopus)

Abstract

In a broadcast encryption system, a broadcaster can encrypt a message to a group of authorized receivers S and each authorized receiver can use his/her own private key to correctly decrypt the broadcast ciphertext, while the users outside S cannot. Identity-based broadcast encryption (IBBE) system is a variant of broadcast encryption system where any string representing the user’s identity (e.g., email address) can be used as his/her public key. IBBE has found many applications in real life, such as pay-TV systems, distribution of copyrighted materials, satellite radio communications. When employing an IBBE system, it is very important to protect the message’s confidentiality and the users’ anonymity. However, existing IBBE systems cannot satisfy confidentiality and anonymity simultaneously. In this paper, using an anonymous identity-based encryption (IBE) primitive with robust property as a building block, we propose a generic IBBE construction, which can simultaneously ensure the confidentiality and anonymity under chosenciphertext attacks. Our generic IBBE construction has a desirable property that the public parameters size, the private key size and the decryption cost are constant and independent of the number of receivers.
Original languageEnglish
Title of host publicationInformation Security and Privacy - 21st Australasian Conference, ACISP 2016, Proceedings
PublisherSpringer Verlag
Pages207-222
Number of pages16
ISBN (Print)9783319403663
DOIs
Publication statusPublished - 1 Jan 2016
Event21st Australasian Conference on Information Security and Privacy, ACISP 2016 - Melbourne, Australia
Duration: 4 Jul 20166 Jul 2016

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume9723
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference21st Australasian Conference on Information Security and Privacy, ACISP 2016
Country/TerritoryAustralia
CityMelbourne
Period4/07/166/07/16

Keywords

  • Anonymity
  • Chosen-ciphertext security
  • Identity-based broadcast encryption
  • Random oracle model
  • Robustness

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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