Cryptanalysis of a group key establishment protocol

Jorge Martinez Carracedo, Adriana Suarez Corona

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In this paper, we analyze the security of a group key establishment scheme proposed by López-Ramos et al. This proposal aims at allowing a group of users to agree on a common key. We present several attacks against the security of the proposed protocol. In particular, an active attack is presented, and it is also proved that the protocol does not provide forward secrecy.

Original languageEnglish
Article number332
Pages (from-to)1-10
Number of pages10
Issue number2
Publication statusPublished - 17 Feb 2021


  • Cryptanalysis
  • Group Key Establishment
  • Group key establishment


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