Quantum cryptography (or quantum key distribution) is a state-of-the-art technique that exploits the properties of quantum mechanics to guarantee the secure exchange of secret keys. This self-contained text introduces the principles and techniques of quantum cryptography, setting it in the wider context of cryptography and security, with specific focus on secret-key distillation. The book start...

Quantum cryptography is a knowledge that guarantees ultimate safety. Associated to present cryptography that might be overcome by the expansion of an ultra-high-speed computer, quantum cryptography safeguards secure message since it is founded on the important bodily laws. It is an emergent technology in which two parties may concurrently produce shared, secret cryptographic key substantial usi...

Quantum Cryptography is based upon the use of quantum effects and extends those effects for conventional cryptographic methods. The two major advantages of quantum cryptography over conventional cryptography are true random secret key generation and eavesdropping detection. Quantum cryptography has been developed which promises more secure communication than any existing technique and cannot be...

It is believed that the quantum cryptography based on quantum key distribution achieves unconditional security. However, the additional authentication mechanism applied to the quantum cryptography needs to be studied since it is difficult for the quantum cryptography alone to prevent manin-the-middle attacks. Thus, we propose two authentication mechanisms combined with modern cryptography that ...