Print Email Facebook Twitter Secure Remote Cloud File Sharing With Attribute-Based Access Control and Performance Optimization Title Secure Remote Cloud File Sharing With Attribute-Based Access Control and Performance Optimization Author Chen, E. (University of Science and Technology Beijing) Zhu, Yan (University of Science and Technology Beijing) Liang, K. (TU Delft Cyber Security) Yin, Hongjian (University of Science and Technology Beijing) Date 2023 Abstract The increasing popularity of remote Cloud File Sharing (CFS) has become a major concern for privacy breach of sensitive data. Aiming at this concern, we present a new resource sharing framework by integrating enterprise-side Attribute-Based Access Control/eXtensible Access Control Markup Language (ABAC/XACML) model, client-side Ciphertext-Policy Attribute-Based Encryption (CP-ABE) scheme, and cloud-side CFS service. Moreover, the framework workflow is provided to support the encrypted-file writing and reading algorithms in accordance with ABAC/XACML-based access policy and attribute credentials. However, an actual problem of realizing this framework is that policy matrix, derived from access policy, seriously affects the performance of existing CP-ABE from Lattice (CP-ABE-L) schemes. To end it, we present an optimal generation algorithm of Small Policy Matrix (SPM), which only consists of small elements, and generates an all-one reconstruction vector. Based on such a matrix, the improved CP-ABE-L scheme is proposed to reduce the cumulative errors to the minimum and prevent the enlargement of error bounds. Furthermore, we give the optimal estimation of system parameters to implement a valid Error Proportion Allocation (EPA). Our experimental results indicate that our scheme has short size of parameters and enjoys efficient computation and storage overloads. Thus, our new framework with optimization methods is conducive to enhancing the security and efficiency of remote work on CFS. Subject ABAC/XACMLattribute-based encryptioncloud file sharingSecuritysmall policy matrix To reference this document use: http://resolver.tudelft.nl/uuid:f125de15-4935-41ca-a586-27439a4a1b25 DOI https://doi.org/10.1109/TCC.2021.3104323 Embargo date 2023-09-30 Source IEEE Transactions on Cloud Computing, 11 (1), 579-594 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 E. Chen, Yan Zhu, K. Liang, Hongjian Yin Files PDF Secure_Remote_Cloud_File_ ... zation.pdf 1.21 MB Close viewer /islandora/object/uuid:f125de15-4935-41ca-a586-27439a4a1b25/datastream/OBJ/view