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@article{197417,
        author = {Mrs. CH Aradhana and Mohammed Abdul Aziz and Abdullah Shareef and Ahmed Maqsood Ali},
        title = {An Improved Authentication Scheme for Remote Data Access and Sharing Over Cloud Storage in Cyber-Physical-Social-Systems},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {12},
        number = {11},
        pages = {5902-5910},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=197417},
        abstract = {Cyber-Physical-Social Systems (CPSSs) encompass the physical, social, and cyber world, generating massive amounts of sensitive data that must be stored and accessed through cloud infrastructure. Existing cloud-storage authentication schemes expose user identities and fail to resist well-known attacks such as replay, man-in-the-middle, and impersonation. This paper proposes an improved authentication scheme that anonymizes user identities via SHA-256 hashing, incorporates biometric verification, and encrypts data using Elliptic Curve Cryptography (ECC) for the base system and ChaCha20 as a high- performance extension. The system enables secure file upload, controlled sharing (public/private), and authenticated download, while a computation-time graph provides empirical comparison between ECC and ChaCha20. Experimental results confirm that ChaCha20 achieves lower computation time than ECC while maintaining equivalent security strength, making it well-suited for resource-constrained IoT-CPSS environments. The proposed scheme protects against internal cloud-server threats, preserves user anonymity, and scales effectively to multiple data owners and mobile users.},
        keywords = {Cloud Storage, Authentication, Cyber-Physical-Social Systems, ECC, ChaCha20, Biometric Verification, Data Privacy, Federated Identity, Remote Data Access, Anonymization.},
        month = {April},
        }