A secure cross-chain transaction model based on quantum multi-signature

【Author】 Wang, Zhuo; Li, Jian; Chen, Xiu-Bo; Li, Chaoyang

【Source】QUANTUM INFORMATION PROCESSING

【影响因子】1.965

【Abstract】There is an obvious demand for blockchain to break the "data island" by crossing chains. Notary signature is one of the common cross-chain methods, and its security depends on the security of the signature algorithm. However, with the development of quantum computing, classical authentication of blockchain based on mathematical cryptography algorithms is not secure enough to prevent quantum attacks. Designing a signature algorithm to ensure the security of blockchain transactions in the post-quantum era is a problem to be solved at present. In the existing quantum signature algorithms, there are some problems, such as the arbitrators are not completely trusted, the quantum measurement loss is not traceable, and the transaction efficiency is low. Hence, our main work is as follows: (i) A cross-chain transaction model is proposed, which includes a quantum multi-signature notary mechanism and an assets quantum-freeze algorithm. (ii) The quantum multi-signature scheme can not only prevent forgery and denial, but also trace back malicious notaries. Moreover, it has the advantages of low storage overhead, decentralization, and high efficiency. (iii) Quantum freeze scheme can prevent messages from being tampered with when the system allocates transferred data or assets to the connector after transaction verification. It effectively improves system transaction security and ensures privacy.

【Keywords】Blockchain cross-chain certification; Quantum multi-signature; Cross-chain transaction; Quantum-freeze

【发表时间】2022 AUG 13

【收录时间】2022-08-28

【文献类型】理论模型

【主题类别】

区块链技术-核心技术-加密算法