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.
Bibliographical noteFunding Information:
Funding: This research was funded in part through research project MTM2017-83506-C2-2-P by the Spanish MICINN.
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- Group Key Establishment
- Group key establishment