An efficient certificateless two-party authenticated key agreement protocol
نویسندگان
چکیده
منابع مشابه
An efficient certificateless two-party authenticated key agreement protocol
Due to avoiding the key escrow problem in the identity-based cryptosystem, certificateless public key cryptosystem (CLPKC) has received a significant attention. As an important part of the CLPKC, the certificateless authenticated key agreement (CLAKA) protocol also received considerable attention. Most CLAKA protocols are built from bilinear mappings on elliptic curves which need costly operati...
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Key agreement (KA) allows two or more users to negotiate a secret session key among them over an open network. Authenticated key agreement (AKA) is a KA protocol enhanced to prevent active attacks. AKA can be achieved using a public key infrastructure (PKI) or identity-based cryptography. However, the former suffers from a heavy certificate management burden while the latter is subject to the s...
متن کاملCertificateless Authenticated Two-Party Key Agreement Protocols
Certificateless public key cryptography (CL-PKC) was proposed to overcome the weaknesses of the public key infrastructure (PKI) and identity-based cryptography (ID-PKC). In PKI, certificates are used to provide the authenticity of public keys. However, a PKI faces many challenges in practice, such as the scalability of the infrastructure and certificate management (distribution, revocation, sto...
متن کاملCryptanalysis of an efficient certificateless two-party authenticated key agreement protocol
Recently, He et al. (Computers and Mathematics with Applications, 2012, 64(6): 1914-1926) proposed a new efficient certificateless two-party authenticated key agreement protocol. They claimed their protocol was provably secure in the extended Canetti-Krawczyk (eCK) model. In this paper, we will show that their protocol is insecure. A type I adversary, who obtains one party’s ephemeral private k...
متن کاملAn Efficient Bilinear Pairing-Free Certificateless Two-Party Authenticated Key Agreement Protocol in the eCK Model
Recent studyoncertificateless authenticated key agreement focuses on bilinear pairing-freecertificateless authenticated key agreement protocol. Yet it has got limitations in the aspect of computational amount.So it is important to reduce the number of the scalar multiplication over elliptic curve group in bilinear pairing-free protocols. This paper proposed a new bilinear pairing-freecertificat...
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ژورنال
عنوان ژورنال: Computers & Mathematics with Applications
سال: 2012
ISSN: 0898-1221
DOI: 10.1016/j.camwa.2012.03.044