Results 241 to 250 of about 27,398 (275)

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
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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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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 ...
Marius A. Aardal, Diego F. Aranha, Katharina Boudgoust, Sebastian Kolby, Akira Takahashi 0002   +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 0001   +2 more
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Signtiming scheme based on aggregate signature

2008 IEEE International Conference on Intelligence and Security Informatics, 2008
Timestamping is a cryptographic technique providing us with a proof-of-existence of a digital document at a given time. Combining both digital signature and provable time-stamping guarantees authentication, integrity and non-repudiation of electronic documents. In this paper, we introduce such a service, so called signtiming.
Duc-Phong Le, Alexis Bonnecaze, Alban Gabillon   +2 more
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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 0001   +1 more
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Splitting and Aggregating Signatures in Cryptocurrency Protocols

2019 IEEE International Conference on Decentralized Applications and Infrastructures (DAPPCON), 2019
The blockchain technology and a vast amount of cryptocurrency related activities have generated an unprecedented level of interest among the public. However, even at the entry level, cryptocurrency users need to deal with the complex task of key management.
S. Sharmila Deva Selvi, Arinjita Paul, C. Pandu Rangan, Siva Dirisala, Saswata Basu   +4 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 0002, Kwangjo Kim, Fangguo Zhang, Xiaofeng Chen 0001   +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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Aggregate and Separate of Signatures in Wireless Network

22nd International Conference on Advanced Information Networking and Applications - Workshops (aina workshops 2008), 2008
Wireless communications offer organizations and users many benefits such as portability and flexibility, but the messages transfer is limited by the power and the bandwidth. So the compactness of messages is necessary. One of the compactness is aggregate signatures, which is a single short string that convinces any verifier that for all 1 les i les n ...
Guoyan Zhang, Shaohui Wang
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