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| Password Authenticated Key Exchange Protocol in the Three Party Setting Based on Lattices |
| Ye Mao Hu Xue-xian Liu Wen-fen |
| PLA Information Engineering University, Zhengzhou 450002, China |
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Abstract As it is resistant to quantum attacks, lattice theory is widely applied to various cryptosystem. Currently, lattice-based Password Authenticated Key Exchange (PAKE) protocols are all designed for two-party circumstance, so it can not meet the application requirements for large-scale communications system. In this paper, a three party PAKE protocol is proposed based on lattice from the two party PAKE framework of Gorce-Katz, and its security is proved in the standard model. At the same time, through the realization of explicit mutual authentication between user and server, the protocol can be used to resist undetectable online dictionary attacks. The new protocol is considered to be the first three party PAKE protocol based on lattices. Compared with general construction, the new protocol reduces the number of communication round, and can avoid the weakness that cryptosystem based on the integer factorization problem or discrete logarithm problem is vulnerable to quantum attacks.
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Received: 03 September 2012
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Corresponding Authors:
Ye Mao
E-mail: yemao119@gmail.com
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2013, Vol. 35 
