Deniable Authentication Protocol Resisting Man-in-the-Middle Attack

Deniable authentication is a new protocol which not only enables a receiver to identify the source of a received message but also prevents a third party from identifying the source of the message. The proposed protocol in this paper makes use of bilinear pairings over elliptic curves, as well as the Diffie-Hellman key exchange protocol. Besides the security properties shared with previous authentication protocols, the proposed protocol provides the same level of security with smaller public key sizes. Keywords— Deniable Authentication, Man-in-the-middle Attack, Cryptography, Elliptic Curves.