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Adaptively secure identity-based broadcast encryption with a constant-sized ciphertext

Journal Article


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Abstract


  • In this work, we present an adaptively secure

    identity-based broadcast encryption system featuring constant

    sized ciphertext in the standard model. The size of the public

    key and the private keys of our system are both linear in

    the maximum number of receivers. Also, our system is fully

    collusion-resistant and has stateless receivers. Compared with the

    state-of-the-art, our scheme is well optimized for the broadcast

    encryption. The computational complexity of decryption of our

    scheme depends only on the number of receivers, not the

    maximum number of receivers of the system. Technically, we

    employ dual system encryption technique and our proposal

    offers adaptive security under the general subgroup decisional

    assumption. Our scheme demonstrates that the adaptive security

    of the schemes utilizing a composite order group can be proven

    under the general subgroup decisional assumption while many

    existing systems working in a composite order group are secure

    under multiple subgroup decision assumptions. We note that this

    finding is of an independent interest, which may be useful in other

    scenarios.

Publication Date


  • 2015

Citation


  • Kim, J., Susilo, W., Au, M. Ho. & Seberry, J. (2015). Adaptively secure identity-based broadcast encryption with a constant-sized ciphertext. IEEE Transactions on Information Forensics and Security, 10 (3), 679-693.

Scopus Eid


  • 2-s2.0-84923249651

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6081&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5054

Has Global Citation Frequency


Number Of Pages


  • 14

Start Page


  • 679

End Page


  • 693

Volume


  • 10

Issue


  • 3

Place Of Publication


  • United States

Abstract


  • In this work, we present an adaptively secure

    identity-based broadcast encryption system featuring constant

    sized ciphertext in the standard model. The size of the public

    key and the private keys of our system are both linear in

    the maximum number of receivers. Also, our system is fully

    collusion-resistant and has stateless receivers. Compared with the

    state-of-the-art, our scheme is well optimized for the broadcast

    encryption. The computational complexity of decryption of our

    scheme depends only on the number of receivers, not the

    maximum number of receivers of the system. Technically, we

    employ dual system encryption technique and our proposal

    offers adaptive security under the general subgroup decisional

    assumption. Our scheme demonstrates that the adaptive security

    of the schemes utilizing a composite order group can be proven

    under the general subgroup decisional assumption while many

    existing systems working in a composite order group are secure

    under multiple subgroup decision assumptions. We note that this

    finding is of an independent interest, which may be useful in other

    scenarios.

Publication Date


  • 2015

Citation


  • Kim, J., Susilo, W., Au, M. Ho. & Seberry, J. (2015). Adaptively secure identity-based broadcast encryption with a constant-sized ciphertext. IEEE Transactions on Information Forensics and Security, 10 (3), 679-693.

Scopus Eid


  • 2-s2.0-84923249651

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6081&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5054

Has Global Citation Frequency


Number Of Pages


  • 14

Start Page


  • 679

End Page


  • 693

Volume


  • 10

Issue


  • 3

Place Of Publication


  • United States