Secure and efficient data sharing in disaster rescue based on blockchain

Abstract

In disaster areas, rescue vehicles (RVs) need to exchange large amounts of data, such as rescue commands and operational experience, to ensure driving safety and rescue efficiency. However, the communication infrastructure in these areas is often damaged, severely affecting normal communication and reducing rescue efficiency. In addition, vehicular networks in disaster scenarios are often untrustworthy and struggle to track malicious behavior, posing potential security risks and inefficiencies in data sharing among vehicles. To address these issues, a secure and efficient data sharing scheme for disaster rescue based on blockchain ( SEDS-BDR) is proposed. First, a blockchain-assisted vehicular network framework tailored for disaster relief is designed. Second, a reputation-based consensus algorithm is developed, which securely and immutably tracks improper behavior and records shared data through the blockchain, thereby improving consensus efficiency and system security. Moreover, since blockchain transactions are typically packaged based on time or transaction fees, different weights are assigned to data based on geographic location and information type in the proposed SEDS-BDR. This ensures that urgent data in disaster areas is prioritized for processing, thereby enhancing rescue efficiency. Experimental results show that the reputation- based consensus algorithm effectively shortens consensus time and improves system security. Additionally, the prioritized transaction packaging mechanism optimizes rescue routes, saving time.

Keywords

blockchain / Internet of vehicle (IoV) / data sharing / disaster rescue

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