Abstract

The Internet of Things (IoT) is a heterogeneous network composed of numerous dynamically connected devices. While it brings convenience, the IoT also faces serious challenges in data security. Ciphertext-policy attribute-based encryption (CP-ABE) is a promising cryptography method that supports fine-grained access control, offering a solution to the IoT’s security issues. However, existing CP-ABE schemes are inefficient and unsuitable for IoT devices with limited computing resources. To address this problem, this paper proposes an efficient pairing-free CP-ABE scheme for the IoT. The scheme is based on lightweight elliptic curve scalar multiplication and supports multi-authority and verifiable outsourced decryption. The proposed scheme satisfies indistinguishability against chosen-plaintext attacks (CPA) under the elliptic curve decisional Diffie–Hellman (ECDDH) problem. Performance analysis shows that our proposed scheme is more efficient and better suited to the IoT environment compared to existing schemes.

RAS ID

76651

Document Type

Journal Article

Date of Publication

11-1-2024

Volume

24

Issue

21

Funding Information

Major Science and Technology Projects in Yunnan Province (202202AD080013) / National Key Research and Development Project of China (2019YFB2102303) / National Natural Science Foundation of China (61971014) / King Khalid University (RGP.2/373/45)

PubMed ID

39517740

School

School of Engineering

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Publisher

MDPI

Identifier

Muhammad Waqas: https://orcid.org/0000-0003-0814-7544

Comments

Guo, C., Gong, B., Waqas, M., Alasmary, H., Tu, S., & Chen, S. (2024). An efficient pairing-free ciphertext-policy attribute-based encryption scheme for Internet of Things. Sensors, 24(21), 6843. https://doi.org/10.3390/s24216843

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Link to publisher version (DOI)

10.3390/s24216843