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http://dx.doi.org/10.13089/JKIISC.2021.31.6.1157

User-Centric Disaster Recovery System Based on Proxy Re-Encryption Using Blockchain and Distributed Storage  

Park, Junhoo (IoTrust)
Kim, Geunyoung (Chungnam National University)
Kim, Junseok (Chungnam National University)
Ryou, Jaecheol (Chungnam National University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.31, no.6, 2021 , pp. 1157-1169 More about this Journal
Abstract
The disaster recovery refers to policies and procedures to ensure continuity of services and minimize loss of resources and finances in case of emergency situations such as natural disasters. In particular, the disaster recovery method by the cloud service provider has advantages such as management flexibility, high availability, and cost effectiveness. However, this method has a dependency on a service provider and has a structural limitation in which a user cannot be involved in personal data. In this paper, we propose a protocol using proxy re-encryption for data confidentiality by removing dependency on service providers by backing up user data using blockchain and distributed storage. The proposed method is implemented in Ethereum and IPFS environments, and presents the performance and cost required for backup and recovery operations.
Keywords
Blockchain; Disaster Recovery; Smart Contract; Proxy Re-Encryption; IPFS;
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