Reengineering encryption via mathematical lattice constructs for quantum threat mitigation

This paper proposes a quantum-threat-mitigated encryption scheme by reengineering core algorithms via mathematical lattice constructs.While offering quantum-resistant security, lattice-based homomorphic encryption suffers from high latency and storage overhead.To overcome this, we redesign the ciphertext structure and decryption algorithm, introducing a polynomial Chinese remainder theorem-based method to pack multiple complex plaintexts into a single polynomial.A reconfigurable modular unit and a hybrid crossbar-fixed interconnection network are co-designed to optimise operational efficiency.This dual approach facilitates algorithm reconstruction and optimisation.Security analysis and simulations confirm that our method not only resists quantum computing attacks but also achieves an encryption time of 0.98 ms per bit, meeting real-time requirements.