Publication Type

Journal Article

Version

acceptedVersion

Publication Date

9-2019

Abstract

Fog computing, as an extension of cloud computing, outsources the encrypted sensitive data to multiple fog nodes on the edge of Internet of Things (IoT) to decrease latency and network congestion. However, the existing ciphertext retrieval schemes rarely focus on the fog computing environment and most of them still impose high computational and storage overhead on resource-limited end users. In this paper, we first present a Lightweight Fine-Grained ciphertexts Search (LFGS) system in fog computing by extending Ciphertext-Policy Attribute-Based Encryption (CP-ABE) and Searchable Encryption (SE) technologies, which can achieve fine-grained access control and keyword search simultaneously. The LFGS can shift partial computational and storage overhead from end users to chosen fog nodes. Furthermore, the basic LFGS system is improved to support conjunctive keyword search and attribute update to avoid returning irrelevant search results and illegal accesses. The formal security analysis shows that the LFGS system can resist Chosen-Keyword Attack (CKA) and Chosen-Plaintext Attack (CPA), and the simulation using a real-world dataset demonstrates that the LFGS system is efficient and feasible in practice.

Keywords

Access control, attribute update, attribute-based encryption, Cloud computing, conjunctive keyword search, Edge computing, Encryption, Fog computing, Keyword search, searchable encryption

Discipline

Databases and Information Systems | Information Security

Research Areas

Cybersecurity

Publication

IEEE Transactions on Services Computing

Volume

12

Issue

5

First Page

772

Last Page

785

ISSN

1939-1374

Identifier

10.1109/TSC.2018.2823309

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Copyright Owner and License

Authors

Additional URL

https://doi.org/10.1109/TSC.2018.2823309

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