Research Article
Improved Attribute Proxy Re-encryption Scheme
@INPROCEEDINGS{10.1007/978-3-030-89814-4_25, author={Wang Zhan and Yuling Chen and Wei Ren and Xiaojun Ren and Yujun Liu}, title={Improved Attribute Proxy Re-encryption Scheme}, proceedings={Mobile Multimedia Communications. 14th EAI International Conference, Mobimedia 2021, Virtual Event, July 23-25, 2021, Proceedings}, proceedings_a={MOBIMEDIA}, year={2021}, month={11}, keywords={Data sharing Cloud storage Attribution-based encryption Proxy Re-encryption Data split}, doi={10.1007/978-3-030-89814-4_25} }- Wang Zhan
Yuling Chen
Wei Ren
Xiaojun Ren
Yujun Liu
Year: 2021
Improved Attribute Proxy Re-encryption Scheme
MOBIMEDIA
Springer
DOI: 10.1007/978-3-030-89814-4_25
Abstract
With the development of cloud computing, storing and sharing medical data in the cloud is envisioned as a promising method for supporting a large scale of users. However, if the sensitive information contained in the medical data (e.g., prescribed drug) is leaked, the user privacy will be damaged. In this paper, we propose an attribute-based Proxy Re-encryption scheme based on data split. Security of data storage and the matching between doctors and patients are tackled by CP-ABE and Proxy Re-encryption. To protect patients’ sensitive data, improve the security of files, and reduce computing overhead, we adopt medical file splitting technology and attribute key tree to update keys. The data is stored by two cloud servers. Even if either server is attacked, the clear text cannot be recovered without key information. Besides, mixed encryption is used to improve the operation efficiency.
