Results 161 to 170 of about 685 (192)

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

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.
Li, Jiguo, Yuan, Hong, Zhang, Yichen
openaire   +2 more sources

Certificateless aggregate signature schemes: A review

2016 International Conference on Computing, Communication and Automation (ICCCA), 2016
In the last decades security become a major issue due to increase technology. Among all the existing scheme certificateless aggregate schemes are very efficient techniques in recent scenario which is very helpful to provide security. Certificateless aggregate schemes are most attractive topic for researchers to give a lot of potential to secure our ...
Pankaj Kumar, Vishnu Sharma, Gaurav Sharma   +2 more
openaire   +1 more source

Certificateless Ordered Sequential Aggregate Signature Scheme

2011 Third International Conference on Intelligent Networking and Collaborative Systems, 2011
Ordered sequential aggregate signature scheme is a signature scheme in which each signer for a group signs an individual document, and guarantees both of the validity of the document and the signing order. Many ordered sequential aggregate signature schemes are ID-based scheme and inherit an intrinsic insider problem, called key escrow problem, of the ...
Naoto Yanai, Raylin Tso, Masahiro Mambo, Eiji Okamoto   +3 more
openaire   +1 more source

An efficient certificateless aggregate signature scheme

Wuhan University Journal of Natural Sciences, 2017
Aggregate signature can aggregate n signatures on n messages from n signers into a single signature that convinces any verifier that n signers sign the n messages, respectively. In this paper, by combining certificateless public key cryptography and aggregate signatures, we propose an efficient certificateless aggregate signature scheme and prove its ...
Baoyuan Kang, Mu Wang, Dongya Jing
openaire   +1 more source

Security Model for Certificateless Aggregate Signature Schemes

2008 International Conference on Computational Intelligence and Security, 2008
Gong, Long, Hong and Chen defined the security model of certificateless aggregate signature schemes for the first time. However, there are some weaknesses exist in their model. In this paper, we point out some drawbacks of the security model of Gong et al.'s and present a new one.
Lei Zhang, Futai Zhang
openaire   +1 more source

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, Bo Qin, Qianhong Wu, Futai Zhang   +3 more
openaire   +1 more source

Three attacks of certificateless aggregate signature scheme

Proceedings of the ACM Turing Celebration Conference - China, 2019
After in-depth research, this paper finds that there are three types of attacks in the existing certificateless aggregate signature scheme. For these three types of attacks, this paper gives detailed attack steps for specific schemes, analyzes the reasons for the existing attacks and proposes improvement measures. This paper provides ideas for the next
Shi Lin, Fu Pu, Li Cui
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An efficient certificateless aggregate signature without pairing

International Journal of Electronic Security and Digital Forensics, 2018
Aggregate signature scheme enables an algorithm to combine n signatures of n distinct messages from n users into a single short signature. The resulting aggregate signature can convince the verifier that the n users indeed sign the n messages. Since it greatly reduces the total signature length and verification cost, this primitive is useful especially
Yunyun Qu, Quanwu Mu
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Privacy-Protected Certificateless Aggregate Signature Scheme in VANET

2019 11th International Conference on Wireless Communications and Signal Processing (WCSP), 2019
We propose a certificateless aggregate signature (CLAS) scheme for privacy protection based on the certificateless public key cryptosystem and aggregate signature aiming at the common problems of communication security and efficiency in vehicular ad hoc network (VANET).
Nan Zhao, Guoan Zhang
openaire   +1 more source