Quantum Attack-Resistant Security System for Cloud Computing using Lattice Cryptography

Abstract

The safety and security of various cryptosystems are related to the hardness of the integer factorization problem and discrete logarithm problem, most cryptosystems will be rendered vulnerable to attack and outdated as quantum computers become more advanced. This study examines lattice-based cryptography (the NTRU cryptosystem), compares the suggested variation to other cryptosystems by simulation and presents the execution time for key generation, encryption, and decryption procedures, as well as to highlight the benefits and drawbacks of the proposed cryptosystem. A variant of the NTRU cryptosystem is developed with the purpose of improving the cryptosystem's security by allowing it to withstand attacks in both classical and quantum computing. The simulation revealed that the existing NTRU cryptosystem has a better time complexity compared to the proposed NTRU cryptosystem. The existing NTRU cryptosystem has a time complexity of O(n 2 ) while the proposed variant has O(n 3 ). Though had a better capacity of handling large data because of the introduction of lattice multiplication.

A Hybrid Double Encryption Approach for Enhanced Cloud Data Security in Post-Quantum Cryptography

“…NTRU Encrypt, a lattice-based encryption system developed to withstand the cryptographic flaws that quantum computers can eventually exploit, is one of the notable PQC algorithms in this field. NTRU Encrypt, an effective encryption algorithm constructed on the mathematical underpinnings of lattice-based cryptography, is at the core of PQC's promise [6].…”