Results 131 to 140 of about 476 (169)

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

Generic Construction of Certificateless Signature

2004
To provide the binding between a user and his public key, traditional digital signature schemes use certificates that are signed by a trusted third party. While Shamir’s identity-based signature scheme can dispense with certificates, the key escrow of a user’s private key is inherent in the identity-based signature scheme.
Yum, DH, Lee, PJ
openaire   +2 more sources

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

Efficient Certificateless Signature Schemes

2007
Recently, in order to eliminate the use of certificates in certified public key cryptography and the key-escrow problem in identity based cryptography, the notion of certificateless public key cryptography was introduced. In this paper, to construct an efficient certificateless signature (CLS) scheme, we present a new approach compactly and ...
Kyu Young Choi, Jong Hwan Park, Jung Yeon Hwang, Dong Hoon Lee 0001   +3 more
openaire   +1 more source

An Efficient Certificateless Signature Scheme

2005
Traditional certificate based cryptosystem requires high maintenance cost for certificate management. Although, identity based cryptosystem reduces the overhead of certificate management, it suffers from the drawback of key escrow. Certificateless cryptosystem combines the advantages of both certificate based and identity based cryptosystems as it ...
M. Choudary Gorantla, Ashutosh Saxena
openaire   +1 more source

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

Certificateless Threshold Signature Schemes

2005
We analyze the relationship and subtle difference between the notion of certificateless public key cryptography (CL-PKC) and identity-based schemes without a trusted private key generator (PKG), then propose a certificateless threshold signature scheme based on bilinear pairings.
Lichen Wang, Zhenfu Cao, Xiangxue Li, Haifeng Qian   +3 more
openaire   +1 more source