Results 201 to 210 of about 26,610 (245)

On the Security of a Certificateless Aggregate Signature Scheme

IEEE Communications Letters, 2011
Certificateless cryptography eliminates the need of certificates in public key cryptosystems and solves the inherent key escrow problem in identity-based cryptosystems. An aggregate signature scheme is a signature scheme which allows to aggregate n signatures on n distinct messages from n distinct users into a single signature.
exaly   +2 more sources

Compact sequential aggregate signatures

Proceedings of the 2007 ACM symposium on Applied computing, 2007
In this paper, a new notion which we call compact sequential aggregate signatures is introduced and formalized. Informally, a compact sequential aggregate signature states the following thing: for a given message vector m=(m1, · · · mι), a public key vector PK=(PK1, · · · , PKι) and a path p=(v1, · · · , vι), where vi=(idi, PKi), the size of the third ...
Yi Mu 0001, Willy Susilo, Huafei Zhu
openaire   +1 more source

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

Aggregate Signature Protocol with Group Leader

Cybernetics and Systems Analysis, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kozina, G. L., Savchenko, D. K.
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A structured aggregate signature scheme

2010 International Symposium On Information Theory & Its Applications, 2010
In multisignature scheme, verifiying the signing order is sometimes very important. A multisignature scheme in which generated signatures reflect the structure of signers, e.g. signing order, is called structured multisignature scheme and many such schemes have been proposed so far.
Naoto Yanai, Eikoh Chida, Masahiro Mambo
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

Fault-Tolerant Aggregate Signatures

2016
Aggregate signature schemes allow for the creation of a short aggregate of multiple signatures. This feature leads to significant reductions of bandwidth and storage space in sensor networks, secure routing protocols, certificate chains, software authentication, and secure logging mechanisms. Unfortunately, in all prior schemes, adding a single invalid
Gunnar Hartung, Björn Kaidel, Alexander Koch 0001, Jessica Koch, Andy Rupp   +4 more
openaire   +3 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
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Hybrid Aggregate Signature Scheme: A New Type Aggregate Signature Scheme

2009 Second International Conference on Information and Computing Science, 2009
An aggregate signature scheme is a digital signature scheme that supports aggregation: Given n ordinary signatures on n distinct messages from n distinct ordinary signers, it is possible to aggregate all these signatures into a single short signature.
Guozheng Hu, Fan Hong, Guohua Cui
openaire   +1 more source

A Sanitizable Signature Scheme with Aggregation

2007
A sanitizable signature scheme is a digital signature scheme in which, after generating a signer's signature on a document, specific entities (called sanitizers) can modify the document for hiding partial information. A verifier can confirm the integrity of disclosed parts of the sanitized document from the signature. The sanitizable signature is quite
Tetsuya Izu, Noboru Kunihiro, Kazuo Ohta, Masahiko Takenaka, Takashi Yoshioka   +4 more
openaire   +1 more source