Conclusion
In this paper, we have explored bilateral access control and non-interactive key update for secure data sharing. Specifically, we have proposed a secure and fine-grained data sharing (SFDS) scheme, which leverages puncturable encryption to enable users to non-interactively update their secret keys. Furthermore, the SFDS scheme achieves bilateral access control for both data providers and data requesters. The performance evaluation demonstrates that the SFDS scheme is practical. In future work, we will focus on privacy-preserving data sharing with temporal access control in mobile computing environments.
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Acknowledgements
This work was supported by the National Key R&D Projects (No. 2021YFB00900), the National Natural Science Foundation of China (Grant Nos. U20A20174, U22B2062, 62302230, 62202051, 62372068, 62302229, and 62302162), and the China Postdoctoral Science Foundation (Nos. 2021M700435, 2024M751480).
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Song, F., Sun, X., Gao, Y. et al. Towards secure and fine-grained data sharing over cloud platform. Front. Comput. Sci. 19, 196808 (2025). https://doi.org/10.1007/s11704-024-40279-z
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DOI: https://doi.org/10.1007/s11704-024-40279-z