Enhancing Data Security in Transmission Through Quantum Key Distribution in Cryptography

As the world becomes more computerized, keeping data transfer safe has become very important. Quantum computers and other strong computers have the ability to break classical encryption methods, even though they are widely used. Quantum Key Distribution (QKD) is a new way to protect data. It uses quantum physics to make sure that the sharing of cryptographic keys is safe. The aim of this study is to look into how QKD can be used to improve the security of data transfer. The suggested method combines QKD with current encryption standards to create a safe and effective way to send data. The method includes setting up a key sharing system based on QKD and then using symmetric encryption algorithms to keep the data being sent safe. The system is tried in different communication settings to see how well it protects against spying and "man-in-the-middle" attacks. The study's results show that QKD greatly improves the safety of sending data by keeping the cryptography keys secret. The results show that QKD has the potential to stop people from getting in without permission and find any attempts to change the keys while they are being sent out. The table below shows performance numbers that show how well QKD works in real-world situations. It shows how well communication speeds and security measures compare.