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Privacy-Preserving and Efficient Public Key Encryption with Keyword Search Based on CP-ABE in Cloud

State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China
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Received: 16 August 2020 / Revised: 2 October 2020 / Accepted: 8 October 2020 / Published: 13 October 2020
In the area of searchable encryption, public key encryption with keyword search (PEKS) has been a critically important and promising technique which provides secure search over encrypted data in cloud computing. PEKS can protect user data privacy without affecting the usage of the data stored in the untrusted cloud server environment. However, most of the existing PEKS schemes concentrate on data users’ rich search functionalities, regardless of their search permission. Attribute-based encryption technology is a good method to solve the security issues, which provides fine-grained access control to the encrypted data. In this paper, we propose a privacy-preserving and efficient public key encryption with keyword search scheme by using the ciphertext-policy attribute-based encryption (CP-ABE) technique to support both fine-grained access control and keyword search over encrypted data simultaneously. We formalize the security definition, and prove that our scheme achieves selective indistinguishability security against an adaptive chosen keyword attack. Finally, we present the performance analysis in terms of theoretical analysis and experimental analysis, and demonstrate the efficiency of our scheme. View Full-Text
Keywords: cloud computing; public key encryption with keyword search; data privacy; access control; ciphertext-policy attribute-based encryption cloud computing; public key encryption with keyword search; data privacy; access control; ciphertext-policy attribute-based encryption
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MDPI and ACS Style

Zhou, Y.; Zheng, S.; Wang, L. Privacy-Preserving and Efficient Public Key Encryption with Keyword Search Based on CP-ABE in Cloud. Cryptography 2020, 4, 28. https://0-doi-org.brum.beds.ac.uk/10.3390/cryptography4040028

AMA Style

Zhou Y, Zheng S, Wang L. Privacy-Preserving and Efficient Public Key Encryption with Keyword Search Based on CP-ABE in Cloud. Cryptography. 2020; 4(4):28. https://0-doi-org.brum.beds.ac.uk/10.3390/cryptography4040028

Chicago/Turabian Style

Zhou, Yunhong; Zheng, Shihui; Wang, Licheng. 2020. "Privacy-Preserving and Efficient Public Key Encryption with Keyword Search Based on CP-ABE in Cloud" Cryptography 4, no. 4: 28. https://0-doi-org.brum.beds.ac.uk/10.3390/cryptography4040028

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