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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 combinatorial auction mechanism for time-varying multidimensional resource allocation and pricing in fog computing
Autorzy:: Li, Shiyong
Zhang, Yanan
Sun, Wei
Liu, Jia
Powiązania:: https://bibliotekanauki.pl/articles/15548021.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: fog computing
combinatorial auction
time varying multidimensional resource allocation
resource pricing
mgła obliczeniowa
aukcja kombinatoryczna
wycena zasobów
Opis:: It is a hot topic to investigate resource allocation in fog computing. However, currently resource allocation in fog computing mostly supports only fixed resources, that is, the resource requirements of users are satisfied with a fixed amount of resources during the usage time, which may result in low utility of resource providers and even cause a waste of resources. Therefore, we establish an integer programming model for the time-varying multidimensional resource allocation problem in fog computing to maximize the utility of the fog resource pool. We also design a heuristic algorithm to approximate the solution of the model. We apply a dominant-resource-based strategy for resource allocation to improve resource utilization as well as critical value theory for resource pricing to enhance the utility of the fog resource pool. We also prove that the algorithm satisfies truthful and individual rationality. Finally, we give some numerical examples to demonstrate the performance of the algorithm. Compared with existing studies, our approach can improve resource utilization and maximize the utility of the fog resource pool.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2023, 33, 2; 327--339
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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