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The Hsu-Harn-Mu-Zhang-Zhu group key establishment protocol is insecure

03/14/2018

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by Chris J Mitchell, et al.

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A significant security vulnerability in a recently published group key establishment protocol is described. This vulnerability allows a malicious insider to fraudulently establish a group key with an innocent victim, with the key chosen by the attacker. This shortcoming is sufficiently serious that the protocol should not be used.

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