Results 241 to 250 of about 154,876 (275)

Sequential Aggregate Signatures, Multisignatures, and Verifiably Encrypted Signatures Without Random Oracles

Journal of Cryptology, 2012
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Lu, Steve, Ostrovsky, Rafail, Sahai, Amit, Shacham, Hovav, Waters, Brent   +4 more
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A new certificateless aggregate signature scheme

Computer Communications, 2009
Aggregate signatures are useful in special areas where the signatures on many different messages generated by many different users need to be compressed. In this paper, we study aggregate signatures in certificateless public key settings. We first present the notion and security model of certificateless aggregate signature schemes.
Lei Zhang, Futai Zhang
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Aggregating Falcon Signatures with LaBRADOR

Several prior works have suggested to use non-interactive arguments of knowledge with short proofs to aggregate signatures of Falcon, which is part of the first post-quantum signatures selected for standardization by NIST. Especially LaBRADOR, based on standard structured lattice assumptions and published at CRYPTO’23, seems promising to realize this ...
Aardal, Marius A., Aranha, Diego F., Boudgoust, Katharina, Kolby, Sebastian, Takahashi, Akira   +4 more
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Some aggregate forward-secure signature schemes

TENCON 2008 - 2008 IEEE Region 10 Conference, 2008
Ordinary digital signatures have an inherent weakness: if the secret key is leaked, then all signatures, even the ones generated before the leak, are no longer trustworthy. Forward-secure digital signatures address this weakness, they ensure that the past signatures remain secure even if the current secret key is leaked.
N.R. Sunitha, B.B. Amberker
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Aggregate Signature with Traceability of Devices Dynamically Generating Invalid Signatures

2021
Aggregate signature schemes enable us to aggregate multiple signatures into a single short signature. One of its typical applications is sensor networks, where a large number of users and devices measure their environments, create signatures to ensure the integrity of the measurements, and transmit their signed data. However, if an invalid signature is
Ryu Ishii, Kyosuke Yamashita, Yusuke Sakai, Takahiro Matsuda, Tadanori Teruya, Goichiro Hanaoka, Kanta Matsuura, Tsutomu Matsumoto   +7 more
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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
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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
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Fair exchange protocol of signatures based on aggregate signatures

Computer Communications, 2008
In Eurocrypt 2003, Boneh et al. proposed verifiably encrypted signatures from the concept of aggregate signatures that support aggregation. Such signatures enable verifiers to test that a given ciphertext is the encryption of a signature on a given message. Verifiably encrypted signatures are used in fair exchange protocols of signatures. In this paper,
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Enhanced Aggregate Signatures from Pairings

2005
Recently, Boneh et al. proposed the concept of an aggregate signature, introduced security models for such signatures, and also presented some applications. An aggregate signature scheme is a digital signature that supports aggregation: Given n signatures on n distinct messages from n distinct users, it is possible to aggregate all these signatures ...
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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
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