Efficient semi-static secure broadcast encryption scheme

Jongkil Kim, Willy Susilo, Man Ho Au, Jennifer Seberry

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations


In this paper, we propose a semi-static secure broadcast encryption scheme with constant-sized private keys and ciphertexts. Our result improves the semi-static secure broadcast encryption scheme introduced by Gentry and Waters. Specifically, we reduce the private key and ciphertext size by half. By applying the generic transformation proposed by Gentry and Waters, our scheme also achieves adaptive security. Finally, we present an improved implementation idea which can reduce the ciphertext size in the aforementioned generic transformation.

Original languageEnglish
Pages (from-to)62-76
Number of pages15
JournalLecture Notes in Computer Science
Volume8365 LNCS
StatePublished - 2014
Event6th International Conference on Pairing-Based Cryptography, Pairing 2013 - Beijing, China
Duration: 22 Nov 201324 Nov 2013


  • broadcast encryption
  • constant size
  • semi-static


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