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Computer Technology and Development

A Tripartite Key Agreement Protocol of Authentication

Tang Peng-zhi

Published Jan 1, 2012• 0 citations
OpenAlex

Abstract

The new agreement proposed a safe and effective tripartite key exchange protocol,through assumptions in CDH,using elliptic curve cryptosystem keystore and temporary long-term keystore mixed method to assure the security,through the agreement the safety of this agreement are analyzed,show that this agreement can resist many attack;On the other hand,any of the parties involved two sides as a group,generates a common key,then both sides of arbitrary party with third parties again authentication and key agreement,news that need only five times information interaction can achieve the whole agreement of mutual authentication and key confirmation function,but through the comparison also show that agreement has high efficiency.

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The new agreement proposed a safe and effective tripartite key exchange protocol,through assumptions in CDH,using elliptic curve cryptosystem keystore and temporary long-term keystore mixed method to assure the security,through the agreement the safety of this agreement are analyzed,show that this agreement can resist many attack;On the other hand,any of the parties involved two sides as a group,generates a common key,then both sides of arbitrary party with third parties again authentication and key agreement,news that need only five times information interaction can achieve the whole agreement of mutual authentication and key confirmation function,but through the comparison also show that agreement has high efficiency.
The tripartite key agreement protocol that Joux has proposed is more efficient and simple,but it is vulnerable to man-in-the-middle attack.A new method based on certificateless authenticated key agreement protocols is proposed,which extends tripartite key agreement to multi-party accompanied by its authentication function.It has a lot of advantages,such as a short signature,high calculation efficiency,simple management about certificate and escrow-free anonymous key.The new method enjoys much secure prosperity,for instance,which has a non-key control and forward security,resists man-in-themiddle and leaked disguise attack,and so on.
In order to resist against the active attacks,Chen Jia-qi proposed an authenticated tripartite key agreement protocol based on certificateless cryptography in 2010. However,the protocol couldn't resist the passive opponent's attack,and it also couldn't meet some security attributes stated by Chen Jia-qi. In order to solve the above problems,based on an efficient certificateless two-party authenticated key agreement protocol given by He De-biao,this paper proposed a new certificateless authenticated tripartite key agreement protocol. The security and efficiency of the new protocol were analyzed. The result shows that the new protocol satisfies the security properties of the certificateless authenticated tripartite key agreement protocol. Compared with the protocol proposed by Chen Jia-qi,the efficiency of the new protocol is higher,which attributes to the reduced number of pairings in the new protocol.
The existing authenticated tripartitie key agreement protocols mostly employ bilinear pairings, with low computation efficiency, not suitable for wireless network. A new authenticated tripartite key agreement protocol is proposed in this thesis, employing exponentiation and hash function and displaying a higher computation efficiency. Security of the proposed protocol has been verified through a reliable means. Security analysis shows that the protocol can resist many familiar attacks including man-in-the-middle attacks, unknown key-share attacks and key-compromise impersonation attacks, and it is secure and effective.
In this paper, we present a new efficient authenticated key agreement protocol. Compared with other cross-domain protocols which are all in the same cryptosystem, our protocol is innovatively designed to shift between the Public Key Infrastructure (PKI) and the Identity-based Cryptosystem (IBC). This protocol combined with heterogeneous signcryption method is proved to satisfy confidentiality and unforgeability on the basis of the assumptions of Computational Diffie-Hellman problem (CDHP) and Bilinear Diffie-Hellman problem (BDHP) in the authentication phases, and it simultaneously guarantees the ciphertext anonymity. In addition, it can efficiently resist kinds of active attacks such as known-session key attack, key forge attack, and known-temporary secret key attack. Compared with other two-party authenticated key agreement protocols, the newly proposed key agreement protocol has better security, practicability and efficiency.
The key establishment protocol called LLH can not resist impersonation attack.Aiming at this problem,an improved protocol based on signcryption is proposed.It uses elliptic curve cryptosystem technology under the computational Diffie-Hellman assumption,combines authentication and session key and implements the functions of mutual authentication and key confirmation,so that the security is enhanced.Theoretical analysis results show that the proposed protocol has strong security features and can be resistant to impersonation attack.
In order to make key agreement protocol to resist against the active attacks, proposed a certificateless authenticated tripartite key agreement protocol. First, analysed the existing key agreement protocol. Then designed a security tripartite key agreement scheme based on the theory of certificateless cryptography. This protocol builds a security tripartite session key only need one round message exchange, which can strongly overcome the key escrow and offer perfect forward secrecy. The analysis of security and complexity shows that this protocol is secure and effective.