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A UC-secure authenticated contributory group key exchange protocol based on discrete logarithm

Sobhdel, Y ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1007/978-3-642-45204-8_29
  3. Publisher: 2013
  4. Abstract:
  5. Authenticated key exchange protocols allow parties to establish a common session key which in turn is fundamental to building secure channels. Authenticated group key exchange protocols allow parties to interact with each other and establish a common group session key and avoid peer to peer key exchange; in other words they pave the way to build a broadcast channel. We construct an authenticated group key exchange protocol over UC framework which has the contributiveness property; i.e., the output is not biased by inputs of any party. Our protocol uses CRS model and discrete logarithm. Other protocols over UC framework either are defined over RO model [19] or benefit from a non-standard hardness assumption [16]
  6. Keywords:
  7. Authenticated Group Key Exchange ; Universal Composability Framework ; Authenticated group key exchanges ; Authenticated key exchange protocols ; Broadcast channels ; Contributiveness ; Discrete logarithms ; Group key exchange protocols ; Secure channels ; Universal composability ; Artificial intelligence ; Computer science ; Computers ; Information systems
  8. Source: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) ; Volume 8303 LNCS , December , 2013 , Pages 390-401 ; 03029743 (ISSN); 9783642452031 (ISBN)
  9. URL: http://link.springer.com/chapter/10.1007/978-3-642-45204-8_29