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Computer Engineering and Applications Journal

Homomorphism key agreement based on ID

Yao Qin

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

This paper reviews the basic content of key management,points out the limitation of the existing key agreement protocol.It introduces IBE public key cryptosystems in detail and homomorphic encryption scheme in the integer ring.The homomorphism key agreement based on IBE and homomorphic encryption scheme is presented.Compared with Diffie-Hellman protocol,its operation speed is more quickly;Compared with Key Agreement protocol based on password,it has better security.The protocol can use the public key of IBE to create the contributory,forward secrecy the session key.Finally,the security of the protocol is proved by BAN logic.

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This paper reviews the basic content of key management,points out the limitation of the existing key agreement protocol.It introduces IBE public key cryptosystems in detail and homomorphic encryption scheme in the integer ring.The homomorphism key agreement based on IBE and homomorphic encryption scheme is presented.Compared with Diffie-Hellman protocol,its operation speed is more quickly;Compared with Key Agreement protocol based on password,it has better security.The protocol can use the public key of IBE to create the contributory,forward secrecy the session key.Finally,the security of the protocol is proved by BAN logic.
This paper analyzed the common key agreement protocol. Based on the homomorphic encryption mechanism and NTRU Public Key Cryptosystem,the authenticated homomorphism key agreement protocol based on NTRU Public Key Cryptosystem was presented. The session key created by the that protocol was authenticated,contributory and forward secrecy. Compared with the key agreement protocol based on the other public key cryptosystem,it has better security and efficiency. The improved BAN logic was used to analyze the protocol formally,and the security of the protocol was proved.
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.
The certificateless -based authenticated key agreement protocols have the advantages of simplicity of managing identities compared to the PKI-based schemes,as well as avoiding the key escrow issues inherited in the identity-based schemes. This paper proposes a two-party certificateless-based authenticated key agreement scheme based on a provably secure certificateless-based public key encryption scheme.The comparisons with other comparable schemes in security and efficiency show that,the new scheme achieves more of the desired security attributes,such as perfect forward secrecy,PKG forward secrecy,known session-specific temporary information secrecy and key escrowless.Meanwhile it keeps the nice computational efficiency.
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.
The security of a recently proposed ID-based authenticated key agreement protocol was analyzed,and an enhanced ID-based authenticated key agreement protocol is presented based on the previous work. a malicious PKG (private key generator) can still obtain all of the agreed session keys, that is, it doesn't provide PKG-forward secrecy in escrowless mode. Aiming at the security flaws of an existing ID-based key agreement Protocol and a key agreement Protocol for multi-trustdomain proposed based on the new variant mode of ID- Base public key infrastrueture(PKI), an improved scheme is proposed. The new scheme can avoid excessive power of KGC to make up the security flaws in the original protocols, which has a higher level of security. The new schemes have many properties such as equal contribution; non-key control; against man-in-middle attack; etc.
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.