Then we provide another provable secure two-party PAKE protocol using bilinear pairings in the random oracle model , which can be resistant to PCI attack .
To resist these attacks , we mainly design novel and secure PAKE protocols in the asymmetric setting , which are competitive with the existing protocols in terms of security and efficiency .
Password-based authenticated key exchange ( PAKE ) protocols enable two or more parties holding a human-memorable password to agree on a session key over a public network in a secure and authenticated manner .
The PAKE protocol which prevent private key technology in now have still some problem , such as simpler user management and computation difficulty in private key because of a compromised server sending an invalid share .
We propose a novel three-party PAKE protocol based on elliptic curve cryptosystem , which can resist PCI attack . In our scheme , the computational cost and communication cost for clients are lower than kindred protocols .
本文利用椭圆曲线密码算法,设计一个新的可以抵抗口令泄露攻击的三方PAKE协议。
As a result , the efficiency is improved . However , RSA-based PAKE protocols are subject to a new type of dictionary attack : e-residue attack . In fact , many protocols based on RSA are found to be vulnerable to this attack .
Next , we present the security analyses of two verifier-based PAKE protocols for three parties in detail and indicate their security holes . Finally , we improve one of them and present the rigorous security proof of the improved protocol ( NLWZ ) .
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The focus of this thesis is on the design and analysis of three-party PAKE and CPK-based AKE protocols . The main goal is to exert the advantages of CPK and make the new protocols to be competitive with the existing protocols in one or more aspects .