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International Conference on Cyberworlds (CW)

An efficient deniable authentication protocol

Hui‐Feng Huang, Chin‐Chen Chang

Published Jan 1, 2005• 1 citation
Publisher

Abstract

The aim of deniable authenticated protocol allows the receiver to identity the source of a given message but not prove the identity of the sender to a third party. In this article, we propose a new non-interactive deniable authenticated protocol based on Diffie-Hellman key distribution protocol. It has lower communication costs and computational complexity than previously proposed schemes.

DOI
10.1109/cw.2005.16

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The aim of deniable authenticated protocol allows the receiver to identity the source of a given message but not prove the identity of the sender to a third party. In this article, we propose a new non-interactive deniable authenticated protocol based on Diffie-Hellman key distribution protocol. It has lower communication costs and computational complexity than previously proposed schemes.
Abstract: Deniable authenticated protocol is a new and attractive protocol compared to the traditional authentication protocol. It allows the appointed receiver to identify the source of a given message, but not to prove the identity of the sender to a third party even if the appointed receiver is willing to reveal its private key. In this paper, we first define a security model for certificateless deniable authentication protocols. Then we propose a non-interactive certificateless deniable authentication protocol, by combining deniable authentication protocol with certificateless cryptography. In addition, we prove its security in the random oracle model.
Deniable authentication protocol allows a sender to deny his/her involvement after the protocol run and a receiver can identify the true source of a given message.Meanwhile, the receiver has no ability to convince any third party of the fact that the message was sent by the specific sender.However, most of the proposed protocols didn't achieve confidentiality of the transmitted message.But, in some special application scenarios such as e-mail system, electronic voting and Internet negotiations, not only the property of deniable authentication but also message confidentiality are needed.To settle this problem, in this paper, we present a non-interactive identity-based deniable authenticated encryption (IBDAE) scheme using pairings.We give the security model and formal proof of the presented IBDAE scheme in the random oracle model under bilinear Diffie-Hellman (BDH) assumption.
Deniable authenticate is a different and attractive authenticate mechanism compared with the traditional authentication. It allows the appointed receiver to identify the identity of the sender, but not to prove the source of a given message to a third party even if the appointed receiver is willing to reveal its private key. Certificateless public key cryptography can solve both the public key certificate management problem of public key infrastructure-based cryptography and the key escrow problem of identity-based cryptography. In this paper, we first define a security model for certificateless deniable authentication protocols. Then we propose a non-interactive certificateless deniable authentication protocol. In addition, we prove its security in the random oracle model. Our protocol can be applied in many actual application scenarios, such as electronic voting, electronic tendering, and online shopping.
The notion of deniable authentication protocol was introduced in 1998 by Dwork et al. [11] and Aumann and Rabin [1, 2] independently. As a new cryptographic authentication protocol, a deniable authentication protocol enables an intended receiver to identify the source of a given message without being able to prove the identity of the sender to a third party. Over the past years, many deniable authentication protocols have been proposed. In this paper, we would like to present a universal encrypted deniable authentication protocol from any public key encryption scheme. Provided that the public key encryption scheme is secure, a secure deniable authentication protocol can be directly derived.
A deniable authentication protocol enables a receiver to identify the true source of given message, but not to prove the identity of the sender to a third party.This property is very useful for providing secure negotiation over the Internet.Recently, Shi et al. proposed a quantum deniable authentication protocol based on the property of unitary transformation and quantum one-way function.A trusted center (TC) is introduced in their protocol, and a much amount of quantum resources, such as entanglement, quantum memory and quantum one-way function, are required.In this paper, a deniable authentication protocol without a trust center is proposed based on the quantum key distribution (QKD).In the presented protocol, the QKD is used firstly to share a secret key between the sender and the receiver.Then, the shared key is used to identify the true source of sender's message by the receiver.Finally, the simulation based proof shows that the receiver cannot prove the identity of the sender to any third party.
Deniable authentication protocols satisfy two basic properties: Deniability and the specifiable receiver properties. However, the deniability also damages the sender right. To protect senders, Hwang and Ma first proposed deniable authentication with anonymous sender protection. The sender’s anonymity is also used to protect the sender’s privacy. To reduce the computation cost, an efficient deniable authentication protocol is proposed. Our new protocol not only achieves the two properties but also provides the protection of sender and receiver to keep the privacy of the sender and receiver. Though the sent message is forgeable by receivers, but the sender can provide evidence to prove the message was really sent by him/her. Due to the efficient performance, our protocol is more practical than the other protocols in the real world.