An Hybrid Approach for Efficient Multicast Stream Authentication over Unsecured Channels

  • Christophe Tartary
  • Huaxiong Wang
  • Josef Pieprzyk
Conference paper

DOI: 10.1007/978-3-540-75670-5_2

Part of the Lecture Notes in Computer Science book series (LNCS, volume 4784)
Cite this paper as:
Tartary C., Wang H., Pieprzyk J. (2007) An Hybrid Approach for Efficient Multicast Stream Authentication over Unsecured Channels. In: Susilo W., Liu J.K., Mu Y. (eds) Provable Security. ProvSec 2007. Lecture Notes in Computer Science, vol 4784. Springer, Berlin, Heidelberg

Abstract

We study the multicast stream authentication problem when an opponent can drop, reorder and inject data packets into the communication channel. In this context, bandwidth limitation and fast authentication are the core concerns. Therefore any authentication scheme is to reduce as much as possible the packet overhead and the time spent at the receiver to check the authenticity of collected elements. Recently, Tartary and Wang developed a provably secure protocol with small packet overhead and a reduced number of signature verifications to be performed at the receiver.

In this paper, we propose an hybrid scheme based on Tartary and Wang’s approach and Merkle hash trees. Our construction will exhibit a smaller overhead and a much faster processing at the receiver making it even more suitable for multicast than the earlier approach. As Tartary and Wang’s protocol, our construction is provably secure and allows the total recovery of the data stream despite erasures and injections occurred during transmission.

Keywords

Stream Authentication Polynomial Reconstruction Unsecured Channel Merkle Hash Tree Erasure Code 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Christophe Tartary
    • 1
    • 2
  • Huaxiong Wang
    • 1
    • 3
  • Josef Pieprzyk
    • 3
  1. 1.Division of Mathematical Sciences, School of Physical and Mathematical Sciences, Nanyang Technological UniversitySingapore
  2. 2.Institute for Theoretical Computer Science, Tsinghua University, Beijing, 100084P.R. China
  3. 3.Centre for Advanced Computing - Algorithms and Cryptography, Department of Computing, Macquarie University, NSW 2109Australia

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