Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12153/1158
Title: Towards Quantum-Secured Permissioned Blockchain: Signature, Consensus, and Logic
Authors: Sun, Xin
Sopek, Mirek
Wang, Qauanlong
Kulicki, Piotr
Keywords: blockchain; quantum computing; consensus; digital signature; lottery
Issue Date: 12-Sep-2019
Publisher: MDPI
Citation: "Entropy" 2019, 21(9), 887
Abstract: While Blockchain technology is universally considered as a significant technology for the near future, some of its pillars are under a threat of another thriving technology, Quantum Computing. In this paper, we propose important safeguard measures against this threat by developing a framework of a quantum-secured, permissioned blockchain called Logicontract (LC). LC adopts a digital signature scheme based on Quantum Key Distribution (QKD) mechanisms and a vote-based consensus algorithm to achieve consensus on the blockchain. The main contribution of this paper is in the development of: (1) unconditionally secure signature scheme for LC which makes it immune to the attack of quantum computers; (2) scalable consensus protocol used by LC; (3) logic-based scripting language for the creation of smart contracts on LC; (4) quantum-resistant lottery protocol which illustrates the power and usage of LC.
URI: http://hdl.handle.net/20.500.12153/1158
DOI: 10.3390/e21090887
Appears in Collections:Artykuły naukowe (WF)

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