With the speed at which quantum computing is developing, protecting digital communications from unwanted access is becoming more and more important. Due to their reliance on computational complexity, traditional cryptographic techniques like RSA and ECC are susceptible to quantum attacks. The development of quantum-resistant cryptographic models is required because the viability of these popular encryption methods is threatened by the emergence of quantum computers. Quantum-Inspired Genetic Algorithms (QIGA) are presented in this paper as a novel solution to this problem. The efficiency and versatility of cryptographic systems are increased by QIGA, which combines quantum concepts like superposition, interference, and quantum bit representation (qubits) with the optimisation powers of Genetic Algorithms (GAs). QIGA enhances the identification of safe cryptographic keys and fortifies defences against quantum attacks by utilising these ideas. We examine the drawbacks of traditional cryptography methods and show how QIGA can get around them. The suggested model provides a scalable, reliable post-quantum cryptography solution by highlighting the combination of evolutionary computation and quantum mechanics. This work lays the groundwork for future studies in quantum-resistant cryptographic algorithms by highlighting QIGA’s potential to guarantee secure communication in the age of quantum computing.