Simulation of BB84 Quantum Key Exchange Protocol and Attack Analysis

Abstract

The main purpose of quantum key distribution protocols is to provide a practical and secure transmission of the single-use key used in encryption at the sender and receiver side. In the classical method, both parties cannot be sure that the key has not been taken over by an attacker. Since the quantum key exchange method basically relies on quantum physics, it provides higher security than conventional key distribution methods. In this study, the first and most used BB84 protocol, which is one of the quantum key distribution (QKD) protocols, and the distribution of the key between the receiver and the sender in the simulation environment and the attempt of the attacker to achieve the key was performed in the simulation environment. The results obtained in the last section are analyzed and suggestions are made for future studies.