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Title:
Security weakness of two authenticated key exchange protocols from pairings
Authors: Qingfeng Cheng, Chuangui Ma
Abstract:Recently, Liu proposed two authenticated multiple key exchange protocols using pairings, and claimed two protocols featured many security attributes. In this paper, we show that Liu’s protocols are insecure. Both of Liu’s protocols cannot provide perfect forward secrecy.
ePrint: https://eprint.iacr.org/2010/312
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