cryptography

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cryptography

(krip-tog′ră-fē) [ crypt- + -graphy]
The science and techniques of concealing or disguising information through encoding and decoding. In the health professions cryptography is used to ensure the confidentiality of medical records.
References in periodicals archive ?
Based on quantum mechanics and classical cryptography, quantum cryptography is a novel one in the field of cryptography.
In this review article, we have discussed developments of finite-block-length theory in classical and quantum information theory: classical and quantum channel coding, data compression, (secure) random number generation, quantum cryptography, and physical layer security.
Pach, "The measure of security in quantum cryptography", 2012 IEEE Global Communications Conf.
Despite this apparent shift in interest from quantum computing to quantum cryptography, in February 2013, a Chinese report emerged touting a breakthrough in trying to achieve the quantum computer: "The solid-state quantum research crew from the University of Science and Technology of China succeeded in performing the quantum logic gate operation on one single electron at 10 picoseconds, renewing the previous world records by nearly 100 times." (10) Prior to China's achievement, "U.S.
Mahanti, "Network security-based on quantum cryptography and multi qubit hadamard matrices," Global Journal of Computer Science and Technology, vol.
With quantum cryptography, a quantum cryptographic key is transmitted one photon at a time, the smallest increment possible.
In addition the world's leading scientists are actively taking part in the implementation of projects such as SEC OQC (Secure Communication based on Quantum Cryptography) and EQCSPOT (European Quantum Cryptography and Single Photon Technologies).
In particular, coherent evolution of two quantum bits (qubits) in an entangled state of the Bell type (Bell, 1987; Bell, 1964; Aspect et al., 1982) is relevant to both quantum cryptography and quantum teleportation.
Townsend, Experimental investigation of the performance limits for first telecommunication-window quantum cryptography system, IEEE Photon.
No doubt the C-57D crew was trying to send a coded message back to Earth, made safe from eavesdropping by the use of quantum cryptography.
First, they are part of a multi-team effort with NIST to build a compact robust entangled photon source for use in quantum cryptography. Pathentangled photon states could be used for precision length measurements in astrophysics, photolithography, and navigation (such as optical gyros).
This paper explains how cryptography will be benefited from quantum mechanics, through a short introduction to classical cryptography, and the general principles of quantum cryptography and the BB84 protocol for key distribution.