Quantum Cryptography: A New Approach to Information Security

Paul D. Townsend

Secure operation of a passive optical network is demonstrated using a quantum cryptographic key distribution system operating at a wavelength of 1.3 /spl mu/m. In conclusion we have used quantum cryptography to perform the first verifiably-secure transmission of information over a shared-access PON. The implications of quantum cryptography as a radical new approach for the protection of sensitive information are only just beginning to emerge.

A. Porzio

nbspVenkatesh Prasad. G, nbspRohit A S Nair, S nbspNagamani +1 more

Rajesh Kumar Pateriya, Dr.J.L. Rana, Anupriya Gupta

In the era of information technology the need for secure communication has become increasingly important. Cryptography is a technology for creating the core of information security we use cryptography for making data secure which is the science of information protection from unauthorized interception and tempering. Most modern cryptographic studies design cryptosystems and algorithms using mathematical concepts which are based either on factorization or on discrete logarithm problem. In recent years quantum information research has lead to the discovery of a number of remarkable new paradigms for information processing and communication. These developments include quantum cryptography schemes that offer unconditionally secure information transport guaranteed by quantum-mechanical laws, which provide protection of system security, and optimization of system efficiency and detects intrusion and wiretap. Today quantum cryptography is used in various application for transferring secure data without the fear of keys being compromised. This paper reviews the various areas where quantum  cryptography is successfully implemented, its advantages disadvantages & technical issues.

W. Noor-ul-Ain, Atta Rahman, Muhammad Nadeem +1 more

Gabriela Mogos

Quantum cryptography provides us new methods of securing the communications. As compared to classical cryptography, which implies different mathematical algorithms to secure the information, quantum cryptography focuses on the physical support of the information. The process of information transmission or stocking is realized by the intermediation of a physical support, for example the photons transmitted by optical fiber or the electrons from the electricity. Communication security can be regarded as securing the physical support of the carrier of the information - in our case the photons from the optical fiber. Consequently, how and what an attacker can find out depends exclusively on the laws of physics. The paper presents a symmetrical encryption method based on the method of mixture used by the rubik's cube.