A New Era of Cryptography : Quantum Cryptography

Quantum Cryptography

Quantum cryptography

This is a chapter on quantum cryptography for the book “A Multidisciplinary Introduction to Information Security” to be published by CRC Press in 2011/2012. The chapter aims to introduce the topic to undergraduate-level and continuing-education students specializing in information and communication technology.

Quantum Cryptography

Quantum Cryptography was born in the early seventies when Stephen Wiesner wrote “Conjugate Coding”, which unfortunately took more than ten years to see the light of print [50]. In the mean time, Charles H. Bennett (who knew of Wiesner’s idea) and Gilles Brassard picked up the subject and brought it to fruition in a series of papers that culminated with the demonstration of an experimental proto...

Quantum Cryptography

Quantum cryptography is a new method for secret communications offering the ultimate security assurance of the inviolability of a Law of Nature. In this paper we shall describe the theory of quantum cryptography, its potential relevance and the development of a prototype system at Los Alamos, which utilises the phenomenon of single-photon interference to perform quantum cryptography over an opt...

Quantum cryptography

Quantum cryptography could well be the first application of quantum mechanics at the single-quantum level. The rapid progress in both theory and experiment in recent years is reviewed, with emphasis on open questions and technological issues. CONTENTS I. Introduction 145 II. A Beautiful Idea 146 A. The intuition 146 B. Classical cryptography 147 1. Asymmetrical (public-key) cryptosystems 147 2....