Augmenting AES to Quantum Safe level with No-Sum Sequence

Quantum computing is a potential method for addressing complicated issues, such as encryption. Quantum computers' speed poses a challenge to traditional cryptography. The No-Sum sequence-based cryptosystem is a novel quantum-resistant private-key cryptosystem that is suggested. This approach raises the computing resources required to defend against quantum computer-assisted brute-force attacks. The Advanced Encryption Standard (AES) algorithm is used widely in symmetric cryptography. In this article, we discuss various flavors of No-Sum (NS) sequences, these sequences increase the computational resource requirement against the quantum computer-assisted brute-force attack. The proposed process is divided into two phases: the first phase involves the traditional confidential 256-bit key, which we will refer to as the principal key. This primary key will be used for generating three diverse types of NS sequences to serve as a secondary key. By combining these primary and secondary keys, a composite new secret key will be formed and utilized in the first round AES protocol. In phase two regular AES procedures are performed with a composite key. The proposed modified AES cryptosystem illustrates the ability of the NS sequence in the field of a quantum-resistant cryptosystem.