Quantum Mechanics and Cryptography

Cryptography is the way of making data or messages more secure and private. It is the oldest techniques to secure data. This technique is based on algorithms and mathematical calculation. The main problem of this technique is key distribution or storing key or key generation. Anyone can hack key on net if he/she know the algorithm used in key generation process easily. It may take a day to years. But if we distribute key using light and quantum mechanics it will be much more secure. It will take million of years to hack it because it is not based on mathematical computation that can be guess easily. So, our data becomes more secure and private which is much more precious now a day.