Quantum-resistant sharding blockchain and Its application in secure data transmission

Publication Type

Journal Article

Publication Date

5-2025

Abstract

With the approach of the quantum era, public key cryptography (PKC) faces risks, which also presents challenges to blockchain technologies that utilize PKC as a core component. Sharding blockchain is a promising way to realize scalability, yet current research does not consider quantum-resistant sharding blockchains as it is non-trivial to design cross-shard communication and transaction processing method without PKC. Besides, blockchain enables reliability in data transmission and unbreakable communication while current schemes suffer from high overhead and low throughput. In this paper, we propose a quantum-resistant sharding blockchain (QRShar) and a secure data transmission scheme (QRDT) to fill the above gap. Firstly, we design a secure and efficient cross-shard communication pattern utilizing hash-based message authentication code (HMAC) and erasure code to reduce the transmission load and achieve high efficiency. Secondly, we propose the a quantum-resistant sharding blockchain utilizing optimized cross-shard transaction processing method to decrease the consensus execution frequency. Thirdly, we introduce a quantum-resistant key agreement protocol through the verifiable secret sharing on cryptographic hash function and we also offer a data transmission scheme to realize efficient QRDT. Furthermore, we conduct security analysis and performance evaluations for our schemes. The results show that the QRShar throughput can reach up to 34 KTPS and the latency stays below 2 seconds. The key agreement latency is just 43ms.

Keywords

no PKC, quantum-resistance, secure data transmission, sharding blockchain

Discipline

Information Security

Research Areas

Cybersecurity

Publication

IEEE Journal on Selected Areas in Communications

ISSN

0733-8716

Identifier

10.1109/JSAC.2025.3568043

Publisher

Institute of Electrical and Electronics Engineers

Additional URL

https://doi.org/10.1109/JSAC.2025.3568043

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