Authenticated public key broadcast encryption scheme secure against insiders' attack

Chanil Park, Junbeom Hur, Seongoun Hwang, Hyunsoo Yoon

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Broadcast encryption schemes have been studied in the past decades. Recently, insiders' attack on the broadcast encryption scheme has been attracted attention among researchers. So, several broadcast encryption schemes with sender authentication have been proposed. However, since broadcast message size in previous schemes increases linearly at the number of target members, the previous schemes are not suitable for the group with large members. In this paper, we propose a new authenticated public key broadcast encryption scheme called ε-APKBE scheme. The proposed ε-APKBE scheme provides sender authentication property with a constant size broadcast message which is nonlinear on the number of target members. Hence, the proposed scheme is more compatible to the dynamic group with large members than the previous schemes.

Original languageEnglish
Pages (from-to)113-122
Number of pages10
JournalMathematical and Computer Modelling
Issue number1-2
Publication statusPublished - 2012 Jan
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the Agency for Defense Development under contract UD090059ED .


  • Broadcast encryption
  • Collusion attack
  • Identity-based encryption
  • Insiders' attack
  • Sender authentication

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications


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