Journal of Civil Aviation University of China ›› 2023, Vol. 41 ›› Issue (4): 16-22.

• Civil Aviation • Previous Articles     Next Articles

Cybersecurity threat intelligence sharing scheme of civil aviation based on blockchain

WU Yue1 , YA Jun2b , SUN Xianling3 , ZHOU Jingxian2a , LYU Zongping2a   

  1. (1. Network Information Office of North China Air Traffic Management Bureau, CAAC, Beijing 100621, China; 2a. Information Security Evaluation Center; 2b. College of Computer Science and Technology, CAUC, Tianjin 300300, China; 3. Xingtai Science and Technology Museum, Xingtai 054000, Hebei, China)
  • Received:2021-12-30 Revised:2022-03-07 Online:2023-08-25 Published:2023-10-25

Abstract: In order to effectively respond to new network threats such as supply chain and ransomware virus, as well as build an active defense system for civil aviation network security, this paper proposes a cybersecurity threat intelligence (CTI) sharing scheme of civil aviation based on blockchain and encryption technology. This scheme takes the competent department of civil aviation network security as the intelligence management center, and achieves i鄄 dentity authentication and intelligence transactions of civil aviation enterprises and institutions on the chain through smart contract. And proxy re-encryption is applied to process information to ensure the safe sharing of intelligence. Meanwhile, to ensure the security of threat intelligence storage, the interplanetary file system(IPFS) is used to store the encrypted threat intelligence data off chain, and only the hash value of the file is stored on the chain. Simulation experiments and security analysis results show that the proposed scheme can achieve intelli鄄 gence sharing among various civil aviation units with lower costs, and has higher privacy protection intensity than existing schemes.

Key words: font-size:15.04px, ">cybersecurity, threat intelligence sharing, blockchain, smart contract, proxy re-encryption, privacy protection

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