Results 161 to 170 of about 325,539 (190)

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   +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

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   +3 more sources

Strongly secure certificateless short signatures

Journal of Systems and Software, 2012
Highlights? We introduce a new efficient and secure short certificateless signature scheme. ? It is strongly unforgeable. ? The security is based on the CDH assumption. ? The proposed scheme is provably secure against a relatively stronger adversary. Short certificateless signatures have come into limelight in recent years.
Raylin Tso, Xinyi Huang 0001, Willy Susilo   +2 more
openaire   +2 more sources

Practical certificateless short signature scheme

International Journal of Electronic Security and Digital Forensics, 2014
Certificateless cryptography is an attractive paradigm for public key cryptography since it does not require certificates in traditional public key cryptography and also solves the inherent key escrow problem in identity-based cryptography. Currently, certificateless short signature is receiving significant attention from the public key cryptography ...
Miaomiao Tian 0001, Liusheng Huang, Wei Yang 0011   +2 more
openaire   +1 more source

The insecurity of a certificateless undeniable signature scheme

2016 International Wireless Communications and Mobile Computing Conference (IWCMC), 2016
Duan proposed the first certificateless undeniable signature scheme in 2008. Later in 2012, Zhao and Ye proffered an efficient scheme which enjoys from a pairing-free sign algorithm. In this paper, we prove the insecurity of their efficient scheme by mounting two attacks on its invisibility and non-impersonation.
Rouzbeh Behnia, Swee-Huay Heng
openaire   +3 more sources

Batch Verification for Certificateless Signature Schemes

2009 International Conference on Computational Intelligence and Security, 2009
Batch verification is a practical and significant technique which is very useful for greatly reducing the computational cost of verifying many signatures simultaneously. This technique is very attractive for authentications in computation-limited applications such as sensor network and banking service.
Manman Geng, Futai Zhang
openaire   +1 more source

Simple Certificateless Signature with Smart Cards

2008 IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, 2008
A certificateless public key cryptosystem (CL-PKC) was proposed for the first time in 2003, and since then it has been attracted. But in fact most CL-PKC is implemented using the pairing technique. So it is difficult so far to apply CL-PKC to an existing encryption system that uses the conventional encryption method such as RSA.
Kazumasa Omote, Atsuko Miyaji, Kazuhiko Kato   +2 more
openaire   +2 more sources

An efficient revocable certificateless signature scheme

2015 12th International Conference on Fuzzy Systems and Knowledge Discovery (FSKD), 2015
In traditional PKC, public keys of the users are essentially random string generated from random secret keys, thus, public key certificates are required to link the relations between user's identities and their public keys. In ID-based cryptography, public keys are identities such as names, email address, and so on.
Jianhong Zhang, Xubing Zhao
openaire   +2 more sources

Novel Efficient Certificateless Aggregate Signatures

2009
We propose a new efficient certificateless aggregate signature scheme which has the advantages of both aggregate signatures and certificateless cryptography. The scheme is proven existentially unforgeable against adaptive chosen-message attacks under the standard computational Diffie-Hellman assumption.
Lei Zhang 0009, Bo Qin, Qianhong Wu, Futai Zhang   +3 more
openaire   +2 more sources