An Efficient Revocable and Searchable MA-ABE Scheme With Blockchain Assistance for C-IoT

【Author】 Yu, Jiguo; Liu, Suhui; Xu, Minghui; Guo, Hechuan; Zhong, Fangtian; Cheng, Wei

【Source】IEEE INTERNET OF THINGS JOURNAL

【影响因子】10.238

【Abstract】Internet of Things (IoT) devices usually stores data on clouds for computational overhead offloading and easy data sharing. The data owners, as a result, usually have concerns about the security and privacy of their data stored in such cloud-assisted IoT (C-IoT) systems. Traditional encryption and search primitives, including attribute-based encryption (ABE) and public-key encryption with keyword search (PEKS), however, suffer from high overheads in decryption and revocation, and privacy leakage in search. To address these issues, we propose an efficient revocable and searchable multiauthority ABE (MA-ABE) scheme named ERS-ABE, which utilizes blockchain (BC) technology to implement keyword-based search and dynamic user management. ERS-ABE also adopts cloud-assisted decryption to improve the efficiency of IoT devices. It has been proven to be secure against the selective replayable chosen-ciphertext attacks and the chosen-keyword attacks under the random oracle model. The feasibility and efficiency of ERS-ABE have been evaluated through theoretical analysis and extensive simulation studies. The results indicate that EAR-ABE performs better over the state-of-the-art in both storage and computational overheads. Particularly, the operations that are usually done by a central server but taken by a BC in EAR-ABE cost only a few seconds.

【Keywords】Internet of Things; Encryption; Servers; Cloud computing; Blockchains; Security; Task analysis; Attribute-based encryption (ABE); blockchain (BC); cloud-assisted Internet of Things (IoT); public-key encryption with keyword search (PEKS); revocation

【发表时间】2023 1-Feb

【收录时间】2023-05-16

【文献类型】理论模型

【主题类别】

区块链技术-协同技术-物联网