Open Access

ARTICLE

A Multi-Conditional Proxy Broadcast Re-Encryption Scheme for Sensor Networks

Pang Li^{1, *}, Lifeng Zhu², Brij B. Gupta^{3, 4}, Sunil Kumar Jha⁵

1 Nanjing Vocational College of Information Technology, Nanjing, 210044, China.
2 State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory of Remote Measurement and Control, School of Instrument Science and Engineering, Southeast University, Nanjing, 210096, China.
3 Department of Computer Engineering, National Institute of Technology, Kurukshetra, 136119, India.
4 Department of Computer Science and Information Engineering, Asia University, Taichung, 41449, Taiwan.
5 IT Fundamentals and Education Technologies Applications, University of Information Technology and Management in Rzeszow, Rzeszow Voivodeship, 100031, Poland.

* Corresponding Author: Pang Li. Email: .

Computers, Materials & Continua 2020, 65(3), 2079-2090. https://doi.org/10.32604/cmc.2020.013696

Received 17 August 2020; Accepted 21 August 2020; Issue published 16 September 2020

Abstract

In sensor networks, it is a challenge to ensure the security of data exchange between packet switching nodes holding different private keys. In order to solve this problem, the present study proposes a scheme called multi-conditional proxy broadcast reencryption (MC-PBRE). The scheme consists of the following roles: the source node, proxy server, and the target node. If the condition is met, the proxy can convert the encrypted data of the source node into data that the target node can directly decrypt. It allows the proxy server to convert the ciphertext of the source node to a new ciphertext of the target node in a different group, while the proxy server does not need to store the key or reveal the plaintext. At the same time, the proxy server cannot obtain any valuable information in the ciphertext. This paper formalizes the concept of MC-PBRE and its security model, and proposes a MC-PBRE scheme of ciphertext security. Finally, the scheme security has been proved in the random oracle.

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Citations