Temat: group signature - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A decentralized group signature scheme for privacy protection in a blockchain
Autorzy:: Devidas, S.
Rao Y.V., Subba
Rekha, N. Rukma
Powiązania:: https://bibliotekanauki.pl/articles/1838204.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: blockchain
decentralization
e-auction
group signature
privacy
smart contract
łańcuch bloków
e-aukcja
podpis grupy
inteligentny kontrakt
Opis:: Group signature schemes play a vital role in protecting identity privacy of a member of a group who signs a message using the group signature. However, in the existing group signature schemes the centralized group manager has control over all the participants, and these managers can be malicious. They may take a biased decision when there is a dispute among the group members or while revealing the identity of a group member. To overcome the trust issues related to centralized group managers and to improve user privacy, a decentralized group signature scheme (DGSS) is proposed by decentralizing the role of the group manager. The proposed scheme will be more suitable for decentralized environments like a blockchain. Security analysis along with the proof of correctness is also provided for the proposed scheme. A framework for a blockchain-based e-auction protocol using the DGSS is also proposed in this paper.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2021, 31, 2; 353-364
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A new strong multiple designated verifiers signature for broadcast propagation
Autorzy:: Tian, H.
Liu, Y.
Powiązania:: https://bibliotekanauki.pl/articles/206230.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: designated verifier signature
asymmetric group key agreement protocol
signature scheme of Schnorr
broadcast propagation
Opis:: A strong multiple designated verifiers signature (SMDVS) enables a signer to convince a set of verifiers by generating one signature, of which the verification needs a private key of a verifier. After a brief survey of current SMDVS schemes, we find no schemes suitable to a broadcast propagation, where the simulation needs only one verifier's private key. Motivated by this discovery, we propose a broadcast SMDVS scheme. The new scheme is proven secure in the random oracle model.
Źródło:: Control and Cybernetics; 2012, 41, 2; 297-315
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Anonymous signer verifiable encrypted signature from bilinear pairing
Autorzy:: Pomykała, J.
Trabszys, T.
Powiązania:: https://bibliotekanauki.pl/articles/969654.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: anonymous signer
verifiable encrypted signature
GDH group
bilinear pairing
Opis:: In this paper we propose and prove the security of the new cryptographic primitive called the Anonymous Signer Verifiable Encrypted Signature (ASVES), joining the idea of the group signature and the verifiable encrypted signature. It satisfies the traditional requirements of the group signature (unforgeability, anonymity, unlinkability, traceability) and the opacity condition known from the verifiable encrypted signatures. The corresponding scheme may be applied for the fair exchange protocols. Our construction is based on bilinear pairings, defined in the Gap Diffie-Hellman groups.
Źródło:: Control and Cybernetics; 2009, 38, 3; 705-712
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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