New framework of password-based authenticated key exchange from only-one lossy encryption

• Main Authors: XUE, Haiyang, LI, Bao, HE, Jingnan
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2017
• Subjects: Password-based key exchange; Lossy encryption; DDH assumption; LWE assumption; Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/9196; https://ink.library.smu.edu.sg/context/sis_research/article/10201/viewcontent/new_framework.pdf
• Institution: Singapore Management University

In this paper, we introduce a new framework of password-based key exchange (PAKE). Until now, most PAKEs are based on smooth projective hash function on secure encryption. Our PAKE does not rely on smooth projective hash function, and consists of a variate lossy encryption, called only-one lossy encryption, and indistinguishable plaintext checkable secure encryption. We also give construction of only-one lossy encryption based decisional Diffie Hellman (DDH) and learning with errors (LWE) assumptions. Although the instantiation based on DDH assumption does not improve efficiency of precious works, our framework provides more easier and elegant way to construct PAKE from LWE assumption.