What is quantum cryptography and how does it enhance security?

What is quantum cryptography and how does it enhance security?

Quantum cryptography is a method of secure communication that uses quantum mechanics to protect data. It enhances security by ensuring that any attempt to eavesdrop on the communication will be detectable.

How does it differ from classical cryptography?

Unlike classical cryptography, which relies on mathematical algorithms, quantum cryptography uses the principles of quantum mechanics, such as superposition and entanglement, to secure information.

Can you explain the concept of quantum key distribution?

Quantum Key Distribution (QKD) is a technique that allows two parties to generate a shared, secret random key using quantum mechanics. It ensures that any interception of the key can be detected.

What are the practical applications of quantum cryptography?

Practical applications include secure communications for government and military, financial transactions, and protecting sensitive data in various industries.

Are there any limitations or challenges with quantum cryptography?

Yes, challenges include the need for specialized equipment, distance limitations for transmission, and the current high cost of implementation.