Abstract
The rapid growth of distributed learning systems and cross-disciplinary digital services development has augmented the pressure on protecting and effective systems of sharing online educational resources. Conventional identity-based access control systems usually do not offer scalable and fine-grained security in heterogeneous systems where users are members of various administrative domains. To overcome these weaknesses, this paper suggests a secure long-distance cross-domain resource sharing model that is founded on a Hybrid Advanced Encryption Standard (AES) and Multi-Authority Key-Policy Attribute-Based Encryption (MA-KP-ABE) scheme of English online learning resources. The offered architecture combines symmetric encryption as the efficient method of data protection with the attribute-based encryption to implement flexible access control policies across various domains. Within the framework, AES is employed in expedited data encryption, MA-KP-ABE is employed in efficient key management, attribute verification by multiple authorities, dynamic policy enforcement as well as the ability to revoke attributes. The system was tested experimentally on some performance measures such as encryption time, decryption time, key generation time, storage overhead, scalability and accuracy of access control. The experimental findings prove that the proposed hybrid framework has an encryption time of 105.2 ms, decryption time of 82.5 ms, and a key generation time of 52.59 ms. The model also has low storage overhead of 6.5% and scalability to cross-domain settings of over 1500 users. Moreover, the system has a high accuracy in access control of 98.60% which means strong authorization and policy enforcement. The innovation of the given work is formed by the combination of AES and multi-authority KP-ABE with dynamic policy management and attributes revocation where it is possible to provide cross-domain access to online educational resources with the required security, scalability, and efficiency.
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