Abstract
Most password authenticated key exchange(PAKE)protocol designers ignored the attacks resulting from leakage of long-term secret keys(passwords).The authors find that it is impossible to design a secure three-party PAKE protocol only based on password against password-compromise impersonation(PCI)attack.So the authors assume that the server realizes entity authentication using his public-key,and propose a novel three-party PAKE protocol based on elliptic curve cryptosystem(ECC),which can resist PCI attack.Furthermore,the authors prove that the proposed protocol is forward secrecy under the ECGDH assumption in the random oracle and ideal cipher models.
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