Quantum-Resistant Encryption For Secure End-to-End Communication

Cryptographically Relevant Quantum Computers (CRQCs) are no longer hypothetical; they present significant challenges to current IT infrastructure by potentially breaking existing encryption schemes within minutes. This paper introduces an innovative and efficient method for achieving quantum-resistant encryption through lattice-based cryptography. We specifically tackle the challenge of encrypting extremely small units of data, such as a single letter or a single-bit message, by constructing a multidimensional lattice. Our proposed technique leverages the Short Vector Problem (SVP) in lattice-based cryptography and incorporates the Learning with Errors (LWE) methodology for data encryption and decryption. We demonstrate the feasibility and robustness of this approach using a real-time messaging application that provides quantum-resistant end-to-end encryption. Our work has the potential for deployment in strategic applications, securing information from the “harvest now, decrypt later” threat, even in the presence of quantum technologies.