Revocable and Searchable Attribute-based Encryption Scheme with Multi-keyword and Verifiability for Internet of Things

Zhenhua Liu ； Fangfang Yin ； Jiaqi Ji ； Baocang Wang

《International Journal of Network Security》 23卷2期 (2021/03) Pp. 205-219

https://doi.org/10.6633/IJNS.202103_23(2).03

摘要

Internet of things (IoT) is a popular information and communication technologies paradigm, which can realize the interconnection of all things. Considering IoT's security and privacy requirements, we propose a novel attribute-based encryption scheme for IoT, which can provide user revocation, multi-keyword search, and data integrity verification. The proposed scheme utilizes the node selection algorithm KUNodes to achieve efficient user revocation. Simultaneously, the proposed scheme can support multi-keyword search and effectively avoid the return of a large number of irrelevant documents. Furthermore, the proposed scheme calculates the hash value of the concatenation of random key hash value and symmetric ciphertext, and they can quickly verify the integrity of the results. Finally, under the general group model, the proposed scheme is resistant to selective plaintext attacks and selective keyword attacks. The performance analysis shows that the proposed scheme has reasonable practicability in IoT.

關鍵字

Attributed-based Encryption ； Internet of Things ； Multi-keyword Search ； User Revocation ； Verifiability