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Journal of Air Force Engineering University

Sign-cryptic Technique Based on Authenticated Key Agreement Protocol

Chuanrong Zhang, Xiao Guo-zhen

Published Jan 1, 2006• 0 citations
OpenAlex

Abstract

By improvement of Zheng's authenticated key agreement protocol,an identity sign-cryptic technique-based authenticated key agreement protocol is proposed.This protocol has the advantage of sign-cryptic technique and achieves the two functions of authentication and encryption in a single logical step.Therefore,it is of high efficiency.Moreover,due to using ID-based public key system,the expense of building and managing public key infrastructure is decreased and the users need not store or transfer public keys and certificate.And again,in our proposed protocol the bilinear pairing on elliptic curve is employed to reach the equivalent security levels with short length key and small computation cost.As a result,the remarkable properties of our authenticated key agreement protocol are low computation cost,narrow bandwidth requirement,and high security level.

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By improvement of Zheng's authenticated key agreement protocol,an identity sign-cryptic technique-based authenticated key agreement protocol is proposed.This protocol has the advantage of sign-cryptic technique and achieves the two functions of authentication and encryption in a single logical step.Therefore,it is of high efficiency.Moreover,due to using ID-based public key system,the expense of building and managing public key infrastructure is decreased and the users need not store or transfer public keys and certificate.And again,in our proposed protocol the bilinear pairing on elliptic curve is employed to reach the equivalent security levels with short length key and small computation cost.As a result,the remarkable properties of our authenticated key agreement protocol are low computation cost,narrow bandwidth requirement,and high security level.
Through the group key agreement, all group members could negotiate a common session key which is used in later secure communication.While simple GKA cannot provide enough security to resist the adversary's attack, and the malicious damage during the agreement makes the authenticated key agreement particularly important.In identity-based authentication, user's unique identity information is used as the public key, which makes it exempt from a series of management of the certification in public-key infrastructure.Thereby, the identity-based key agreement can simplify the key management procedures and reduce the risk of failure at the certification authority.Recently, several identity-based group key agreement protocols have been proposed, however most of them are either vulnerable to impersonation and replay attack or inefficient and unscalable.This paper proposes a novel authenticated group key agreement protocol which is based on bilinear pairings.It needs two rounds to negotiate the session key, and the low computational complexity makes the protocol efficient and scalable.Meanwhile, our protocol also ensures the forward and backward secrecy and the key independence.Under the Decisional Diffie-Hellman assumption, our protocol is proved to be secure against the adversary. 1.
Authenticated key agreement protocol is used to share a secret key for encrypting data being transferred between two or more parties over a public network. An implementation of this protocol is the certificateless key agreement which utilizes the features of the identity-based public key cryptography and the traditional public key infrastructure. This implementation can produce multiple public keys for a corresponding private key. In this paper, an alternative key generation technique is proposed for certificateless public key cryptography in order to have one public key for one private key. This will improve the security features of the relevant key generation. Furthermore, the efficiency of the proposed protocol is presented in terms of computational operation. The comparison analysis shows that the proposed protocol conveys better efficiency with all the known security attributes compared to the existing protocols.
Authenticated key agreement protocol is the fundamental building block for secure communication in the open network to ensure authentication and confidentiality of e-commerce and e-government applications. Certificateless public key cryptography combines the advantage of the identity-based public key cryptography (ID-PKC) and the traditional PKI. In this paper, we present a secure and efficient two-party authenticated key agreement protocol based on an efficient and secure certificateless public key encryption scheme. It achieves almost all the known security attributes for authenticated key agreement protocol, such as perfect forward secrecy, PKG forward secrecy, key-compromise impersonation resilience, unknown key-share resilience, message independence and no key control. Compared to other comparable schemes, it is more secure and has nice efficiency.
Secure and efficient message delivery is one of the major aims of computer and communication security research. Based on the key agreement protocols using signcryption proposed by Zheng and Zhang chuan-rong, this paper proposed a forward secure key agreement protocol based on identity-signcyption. It combined the advantages of the identity-based public key system and signcryption technique. As compared to the existing schemes, the protocol is not only confidential, authenticated, but also forward secure.
As the fundamental building block for secure communication in the open network, authenticated key agreement protocols are usually constructed in the public key setting. Certificateless public key cryptography combines the advantage of the identity-based public key cryptography (ID-PKC) and the traditional PKI. In this paper, we present a secure and efficient two-party authenticated key agreement protocol based on the efficient certificateless public key encryption scheme due to Cheng and Comley. Security analysis shows that it achieves perfect forward secrecy, PKG forward secrecy and almost all the other known security attributes for authenticated key agreement protocol, such as known-key secrecy, key-compromise impersonation resilience, unknown key-share resilience, known session-specific temporary information security, message independence and no key control. Compared to other comparable schemes, it is more secure and has nice efficiency.
Authenticated group key agreement is important in many modern collaborative and distributed applications. Recently, identity-based authenticated group key agreement has been increasingly researched because of the simplicity of a public key management. Basically, these protocols provide authentication by signatures. Hence they are less efficient for the verification of signatures creates additional computational overhead. In the paper, we propose an efficient authenticated group key agreement protocol by introducing a modified identity-based public key infrastructure with new system setup and key extraction algorithms. The security of our protocol is assured by the discrete logarithm assumption. Moreover, our protocol requires only one round and is more efficient than all previously known ones since it provides authentication without using signatures.