A practical and communication-efficient deniable authentication with source-hiding and its application on Wi-Fi privacy

Abstract

Authentication service in communication is essential. However, information flows transmitted during an authentication process might reveal some personal information. In this paper, we propose a deniable authentication protocol with source hiding which does not reveal any private information, therefore the privacy of participants is preserved. With our approach, the sender is able to deny an authentication process to any third party. The receiver can not prove that the sender has participated in this authentication, though it is sure that the sender is legitimate. We construct this protocol without using “Encryption-then-MAC” paradigm, therefore the underlying building block is not required to be CCA2 secure, and is a more realistic authentication protocol for practical privacy-preserving Internet-based applications. We also show how to apply it in Wi-Fi authentication to prevent the location leakage.