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Security Analysis on a Group Key Transfer Protocol Based on Secret Sharing

  • Mijin KimEmail author
  • Namje Park
  • Dongho Won
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 274)

Abstract

Group key exchange protocols are cryptographic algorithms that describe how a group of parties can communicate with their common secret key over insecure public networks. In 2013, Olimid proposed an improved group key transfer protocol based on secret sharing, and claimed that he eliminated the flaws in Sun et al.’s group key transfer protocol. However, our analysis shows that the protocol is still vulnerable to outsider and insider attacks and does not provide known key security. In this paper, we show a detailed analysis of flaws in the protocol.

Keywords

key exchange protocol group key transfer secret sharing attack confidentiality 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.College of Information and Communication EngineeringSungkyunkwan UniversitySuwonKorea
  2. 2.Department of Computer Education Teachers CollegeJeju National UniversityJejuKorea

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