Description:The described invention spans cloud security, electronic health records (EHR), privacy-aware data storage, post-quantum cryptography, and privacy-respecting computation. Intended for addressing increasingly urgent demands, the secured, scalable, and privacy-respecting solutions concern the immensely sensitive health information floating around in the cloud[1]. The present invention is basically a combination of contemporary cryptographic techniques hybridized into one framework to address the new challenges of healthcare data protection. These techniques include temporal differential privacy used to control longitudinal privacy exposure, quantum-inspired encryption ensuring quantum computer attack resistance, lattice-based obfuscation for preventing algebraic and brute-force cryptanalysis, and biologically-evolving key management for reducing predictability and increasing time entropy.
Hence, targeting the spot where data privacy, post-quantum encryption, secure computation, and health interoperability inters , C , C , Claims:Claim 1:

A computer-implemented system for secure storage, encryption, and privacy-preserving access of electronic health records (EHRs) in cloud computing environments, the system comprising:
•A temporal differential privacy module set up to add noise to EHR fields according to sensitivity level and a time decay factor.
•A quantum-inspired encryption module that imitates the quantum states by classical transformations, including reversible XOR and pseudo-random phase parts.
•A lattice-based obfuscation module designed to transform the encrypted data into a high-dimensional lattice space, and the noise is added in the form of Gaussian noise based on the secret lattice basis matrix.
•An adaptive noise injection module that changes the noise level continuously depending on the sensitivity label chosen from LOW, MEDIUM, HIGH, or CRITICAL.
•A partially homomorphic encryption layer that allows performing operations such as modular exponentiation on the encrypted data without decrypting it.
•A biologically inspire