BDKM: a blockchain-based secure deduplication scheme with reliable key management

Zhang, Guipeng and Xie, Haoran and Yang, Zhenguo and Tao, Xiaohui ORCID: https://orcid.org/0000-0002-0020-077X and Liu, Wenyin (2021) BDKM: a blockchain-based secure deduplication scheme with reliable key management. Neural Processing Letters. ISSN 1370-4621


Abstract

Secure deduplication aims to efficiently eliminate redundant data in cloud storage system, where convergent encryption (CE) is widely-used to provide the data confidentiality. As the number of convergent keys (CKs) in CE will increase dramatically with enlarging data, there is a critical issue that how to safely manage the CKs. Previous works usually introduce a fully-trusted key management server (KS) to ensure the CKs security, resulting in data leakage by KS in reality. In this paper, we propose a blockchain-based secure deduplication scheme with reliable CK management, denoted as BDKM, which introduces different secret information to CE to enhance the data confidentiality in different level deduplications. To realize secure and reliable CK management, the CK will be divided into key segments by using secret sharing scheme and distributed on blockchain as transactions. Therefore, only the valid data owner can recover the CK from the blockchain and the original data will be protected even if the adversaries have colluded with cloud service provider. Security analysis and performance evaluation demonstrate that our proposed scheme can remain secure under the proposed security models with a limited overhead.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published online: 4 March 2021. Permanent restricted access to ArticleFirst version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Sciences (6 Sep 2019 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Sciences (6 Sep 2019 -)
Date Deposited: 02 Jun 2021 05:39
Last Modified: 02 Jun 2021 05:39
Uncontrolled Keywords: deduplication; convergent encryption; secret sharing scheme; key management; Blockchain
Fields of Research (2008): 08 Information and Computing Sciences > 0801 Artificial Intelligence and Image Processing > 080109 Pattern Recognition and Data Mining
08 Information and Computing Sciences > 0804 Data Format > 080402 Data Encryption
Fields of Research (2020): 46 INFORMATION AND COMPUTING SCIENCES > 4604 Cybersecurity and privacy > 460403 Data security and protection
46 INFORMATION AND COMPUTING SCIENCES > 4604 Cybersecurity and privacy > 460401 Cryptography
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970108 Expanding Knowledge in the Information and Computing Sciences
Socio-Economic Objectives (2020): 22 INFORMATION AND COMMUNICATION SERVICES > 2203 Information services > 220302 Electronic information storage and retrieval services
22 INFORMATION AND COMMUNICATION SERVICES > 2204 Information systems, technologies and services > 220405 Cybersecurity
Identification Number or DOI: https://doi.org/10.1007/s11063-021-10450-9
URI: http://eprints.usq.edu.au/id/eprint/42113

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