Abstract
To ensure the security of mass data sharing in the Internet of Things, the cloud computing platform is supposed to provide data-storage services. The ciphertext-policy attribute-based encryption (CP-ABE) schemes has attracted wide-scale attention since users can access the cloud platform in a fine-grained manner. However, there are still some problems in the existing CP-ABE schemes when directly applied in the Internet of Things environment. The problem of simultaneously achieves large computational cost in the encryption and decryption. Moreover, the privacy of access control policy actually still remains unresolved. To fill the gap of the existing schemes, this paper proposes a suitable data sharing scheme for IoT devices which can’t always be online. We use the online/offline CP-ABE technology with privacy, while hiding the access control structure and reducing the computational cost of the devices when they are online. The asymptotic complexity comparison also shows that our scheme achieves high computation efficiency.
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Acknowledgements
This research is supported by the National Natural Science Foundation of China under Grant Nos. U1536115 and U1405254, the Natural Science Foundation of Fujian Province of China under Grant No. 2018J01093, and the Subsidized Project for Postgraduates’ Innovative Fund in Scientific Research of Huaqiao University No. 18013083012.
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Li, X., Tian, H., Ning, J. (2019). Secure Online/Offline Attribute-Based Encryption for IoT Users in Cloud Computing. In: Steinfeld, R., Yuen, T. (eds) Provable Security. ProvSec 2019. Lecture Notes in Computer Science(), vol 11821. Springer, Cham. https://doi.org/10.1007/978-3-030-31919-9_22
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DOI: https://doi.org/10.1007/978-3-030-31919-9_22
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