Results 231 to 240 of about 154,876 (275)

Key-insulated aggregate signature

Frontiers of Computer Science, 2014
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Zhao, Huiyan, Yu, Jia, Duan, Shaoxia, Cheng, Xiangguo, Hao, Rong   +4 more
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Attribute Based Sequential Aggregate Signature

2013 International Conference on Cloud Computing and Big Data, 2013
Attribute based signature (ABS) scheme is an important cryptographic primitive which provides a powerful way for user to control their privacy. However, the computational and storage cost of ABS is reasonable when the number of users involved in the system is huge.
Ximeng Liu, Jianfeng Ma, Jinbo Xiong, Hongtao Li, Yichuan Wang, Di Lu   +5 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
Hartung, Gunnar, Kaidel, Björn, Koch, Alexander, Koch, Jessica, Rupp, Andy   +4 more
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Certificate-based sequential aggregate signature

Proceedings of the second ACM conference on Wireless network security, 2009
In this paper, we propose a new notion called Certificate-Based Sequential Aggregate Signature. Certificate-based cryptography proposed by Gentry [8] combines the merit of traditional public key cryptography and identity based cryptography, without use of the costly certificate chain verification process and the removal of key escrow security concern ...
Joseph K. Liu, Joonsang Baek, Jianying Zhou   +2 more
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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
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Improved heterogeneous aggregation signature scheme

2020 IEEE 9th Joint International Information Technology and Artificial Intelligence Conference (ITAIC), 2020
The heterogeneous aggregate signcryption scheme can authenticate the signatures of multiple messages, thereby ensuring the authenticity of the messages. And this technology also solves the communication problem under different cryptosystems. However, most of the current schemes have hidden dangers of insecurity, and the signcryption may be forged ...
Shijin Li, Yijia Gao, Ting Shi, Fushou Tao   +3 more
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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
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Aggregate Proxy Signature and Verifiably Encrypted Proxy Signature

2007
An aggregate signature is a single short string that convinces any verifier that, for all 1 ≤ i ≤ n, signer i signed message mi, where the n signers and n messages are distinct. The main motivation of aggregate signatures is compactness. In this paper, the concept of aggregate proxy signature (APS) is first proposed to compact the proxy signatures ...
Jin Li, Kwangjo Kim, Fangguo Zhang, Xiaofeng Chen   +3 more
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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
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Towards Lattice Based Aggregate Signatures

2014
We propose the first lattice-based sequential aggregate signature (SAS) scheme that is provably secure in the random oracle model. As opposed to factoring and number theory based systems, the security of our construction relies on worst-case lattice problems. Generally speaking, SAS schemes enable any group of signers ordered in a chain to sequentially
Rachid El Bansarkhani, Johannes Buchmann
openaire   +1 more source