期刊
IEEE TRANSACTIONS ON SERVICES COMPUTING
卷 15, 期 6, 页码 3143-3155出版社
IEEE COMPUTER SOC
DOI: 10.1109/TSC.2021.3086023
关键词
KP-ABE; fine-grained; access control; revocation; blockchain
资金
- Guangdong Major Project of Basic and Applied Basic Research [2019B030302008]
- National Natural Science Foundation of China [61872152]
- Science and Technology Program of Guangzhou [201902010081]
This article proposes a fine-grained access control system based on Key-Policy Attribute-Based Encryption scheme and blockchain to meet the needs of data sharing services, and provides security analysis and system implementation.
Traditional data sharing systems are facing new challenges when implementing access control with more and more complex data sharing requirements. Flexibility of user revocation in completely decentralized environments needs to be taken into account. In this article, we propose a Key-Policy Attribute-Based Encryption scheme with Multiple and Flexible Revocation (MAFR-KP-ABE) to achieve the features of decentralized authorization and flexible revocation. We prove the security of our MAFR-KP-ABE scheme in the standard model and provide the comparison with relevant schemes to demonstrate its efficiency. Then we propose a fine-grained access control system based on MAFR-KP-ABE scheme and blockchain that matches the need of paid data sharing services with several security properties enhanced. Security analysis and system implementation are given subsequently to demonstrate our system efficient and secure.
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