Enhancing blockchain security against quantum threats through integration of post-quantum cryptographic algorithms

The fast progress in quantum computing presents a substantial menace to existing cryptographic systems, requiring post-quantum cryptographic techniques that can withstand quantum attacks. This research aims to increase the security of blockchain ecosystems against quantum-related threats by incorporating robust post-quantum cryptographic methods. We provide a new encryption technique that relies on the Key Encryption process, namely, Crystals-Kyber, in conjunction with an effective digital signature methodology centered on Lattice-based techniques: Falcon and Crystal-Dilithium. The techniques are meticulously included in the Hyperledger Fabric 4.0 platform, showcasing improved security and durability in cryptocurrency exchanges built around blockchain technology. We have effectively achieved a cryptographic resistance above 90 % against quantum assaults, greatly enhancing the protection of blockchain operations. The proposed strategy makes cryptographic design more robust to quantum attacks and establishes a basis for secure blockchain technology in the quantum era.