Results 161 to 170 of about 1,011 (200)

Certificateless Aggregate Signature Scheme

2010 International Conference on E-Business and E-Government, 2010
This paper puts forward a secure construction of certificateless aggregate signature scheme using bilinear maps. The security of our scheme is based on the infeasibility of the Computational Diffie-Hellman problem and is formally proven in the strongest security model of certificateless aggregate signature schemes.
Hu Chen, Wangan Song, Bing Zhao
openaire   +1 more source

Certificateless signature and blind signature

Journal of Electronics (China), 2008
Certificateless public key cryptography is a new paradigm introduced by Al-Riyami and Paterson. It eliminates the need of the certificates in traditional public key cryptosystems and the key escrow problem in IDentity-based Public Key Cryptography (ID-PKC).
Lei Zhang, Futai Zhang
openaire   +1 more source

Certificateless Signature Revisited

2007
In this paper we revisit the security models of certificateless signatures and propose two new constructions which are provably secure in the random oracle model. We divide the potential adversaries according to their attack power, and for the first time, three new kinds of adversaries are introduced into certificateless signatures.
Xinyi Huang 0001, Yi Mu 0001, Willy Susilo, Duncan S. Wong, Wei Wu 0001   +4 more
openaire   +2 more sources

Certificateless multi-proxy signature

Computer Communications, 2011
Multi-proxy signature is a scheme that an original signer authorizes a proxy group as his proxy agent and later only the cooperation of all proxy signers in the proxy group could sign messages on behalf of the original signer. To our best knowledge, most of the existing multi-proxy signature schemes are proposed in public key infrastructure or identity-
Zhengping Jin, Qiaoyan Wen
openaire   +1 more source

Certificateless Concurrent Signature Scheme

2008 The 9th International Conference for Young Computer Scientists, 2008
Certificateless public key cryptography was introduced to remove the use of certificate to ensure the authentication of the user's public key in the traditional certificate-based public key cryptography and overcome he key escrow problem in the identity-based public key cryptography.
Zhenjie Huang, Xuanzhi Lin, Rufen Huang
openaire   +1 more source

An Improved Certificateless Aggregate Signature

2014 IEEE International Conference on Computer and Information Technology, 2014
Recently, Hou et al. Proposed an improved certificate less aggregate signature (CLASS) scheme based on Xiong et al's scheme. They also demonstrated the scheme is provably secure in the random oracle model. Unfortunately, by giving concrete attacks, we point out that Hou et al.'s scheme is not secure in their security model. Then, we propose an improved
Jiang Deng, Chunxiang Xu, Huai Wu, Guangyuan Yang   +3 more
openaire   +1 more source

Certificateless undeniable signature scheme

Information Sciences, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Security Mediated Certificateless Signatures

2007
In PKC 2006, Chow, Boyd and Gonzalez Neito introduced the notion of security mediated certificateless (SMC) cryptography. SMC cryptography equips certificateless cryptography with instantaneous revocation. They presented a formal security model with two constructions for SMC encryption. This paper studies SMC signatures.
Wun-She Yap, Sherman S. M. Chow, Swee-Huay Heng, Bok-Min Goi   +3 more
openaire   +2 more sources

Cryptanalysis and Improvement for Certificateless Aggregate Signature

Fundamenta Informaticae, 2018
In order to satisfy application in resource constrained environment, aggregate signature schemes have been widely investigated. Recently, He et al. pointed out that certificateless aggregate signature (CLAS) scheme proposed by Xiong et al. was insecure against the Type II adversary and presented an possible improvement.
Jiguo Li 0001, Hong Yuan, Yichen Zhang 0003   +2 more
openaire   +2 more sources

Efficient Certificateless Proxy Signature Scheme

International Journal of Foundations of Computer Science, 2016
A proxy signature scheme allows a proxy signer to sign messages on behalf of an original signer within a given context. We propose a certificateless proxy signature (CLPS) scheme, and prove it's security under a stronger security model. Although some good results were achieved in speeding up the computation of pairing function in recent years, it is ...
Lunzhi Deng, Jiwen Zeng, Huawei Huang
openaire   +1 more source