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Noise: an enemy to be dealt with and a major factor limiting communication system performance. However, what if there is gold in that garbage? In conventional engineering, our focus is primarily on eliminating, suppressing, combating, or…

Information Theory · Computer Science 2024-06-28 Ertugrul Basar

The Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange system has been introduced as a simple, very low cost and efficient classical physical alternative to quantum key distribution systems. The ideal system uses only a few electronic…

Cryptography and Security · Computer Science 2015-09-23 Gergely Vadai , Robert Mingesz , Zoltan Gingl

In this paper we determine the noise properties needed for unconditional security for the ideal Kirchhoff-Law-Johnson-Noise (KLJN) secure key distribution system using simple statistical analysis. It has already been shown using physical…

Cryptography and Security · Computer Science 2014-05-07 Zoltan Gingl , Robert Mingesz

We review the security requirements for vehicular communication networks and provide a critical assessment of some typical communication security solutions. We also propose a novel unconditionally secure vehicular communication architecture…

Cryptography and Security · Computer Science 2014-07-10 Y. Saez , X. Cao , L. B. Kish , G. Pesti

It has been shown recently that the use of two pairs of resistors with enhanced Johnson-noise and a Kirchhoff-loop-i.e., a Kirchhoff-Law-Johnson-Noise (KLJN) protocol-for secure key distribution leads to information theoretic security…

Emerging Technologies · Computer Science 2016-11-17 R. Mingesz , L. B. Kish , Z. Gingl , C. G. Granqvist , H. Wen , F. Peper , T. Eubank , G. Schmera

First, we show a new inexpensive defense against intruders and the man-in-the-middle attack in the Kirchhoff's-loop-Johnson-like-noise (KLJN) cipher. Then instead of point-to-point communication, we propose a high efficiency, secure…

General Physics · Physics 2007-05-23 Laszlo B. Kish , Robert Mingesz

We outline some general solutions to use already existing and currently used wire lines, such as power lines, phone lines, internet lines, etc, for the unconditionally secure communication method based on Kirchoff's Law and Johnson-like…

General Physics · Physics 2007-05-23 Laszlo B. Kish

A secure key distribution (exchange) scheme is unconditionally secure if it is unbreakable against arbitrary technological improvements of computing power and/or any development of new algorithms. There are only two families of…

Quantum Physics · Physics 2021-07-20 Christiana Chamon , Laszlo Kish

A simple and general proof is given for the information theoretic (unconditional) security of the Kirchhoff-law-Johnson-noise (KLJN) key exchange system under practical conditions. The unconditional security for ideal circumstances, which…

Cryptography and Security · Computer Science 2014-12-30 L. B. Kish , C. G. Granqvist

The statistical-physics-based Kirchhoff-law-Johnson-noise (KLJN) key exchange offers a new and simple unclonable system for credit/debit card chip authentication and payment. The key exchange, the authentication and the communication are…

Emerging Technologies · Computer Science 2016-07-21 Laszlo Bela Kish , Kamran Entesari , Claes-Goran Granqvist , Chiman Kwan

The Kirchhoff-law-Johnson-noise (KLJN) scheme is a statistical/physical secure key exchange system based on the laws of classical statistical physics to provide unconditional security. We used the LTSPICE industrial cable and circuit…

Cryptography and Security · Computer Science 2016-06-03 Hsien-Pu Chen , Muneer Mohammad , Laszlo B. Kish

We point out that the claims in the comment-paper of Scheuer and Yariv are either irrelevant or incorrect. The idealized Kirchoff-loop-Johnson-like-noise (KLJN) scheme is totally secure therefore it is more secure than idealized quantum…

General Physics · Physics 2007-05-23 Laszlo B. Kish

This article is a supplement to our recent one about the analysis of the noise properties in the Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange system [Gingl and Mingesz, PLOS ONE 9 (2014) e96109, doi:10.1371/journal.pone.0096109].…

Cryptography and Security · Computer Science 2014-09-30 Robert Mingesz , Gergely Vadai , Zoltan Gingl

We introduce seven new versions of the Kirchhoff-Law-Johnson-(like)-Noise (KLJN) classical physical secure key exchange scheme and a new transient protocol for practically-perfect security. While these practical improvements offer…

Cryptography and Security · Computer Science 2013-06-18 Laszlo B. Kish

This letter proposes a novel hybrid key distribution architecture that jointly exploits quantum key distribution (QKD) and Kirchhoff-law-Johnson-noise (KLJN) statistical-physical key exchange. In the proposed system, an optical BB84-type…

Quantum Physics · Physics 2026-05-18 Ertugrul Basar

This is the longer (partially unpublished) version of response; the shorter version (http://arxiv.org/abs/physics/0605013) is published in Physics Letters A. We point out that the claims in the comment-paper of Scheuer and Yariv are either…

General Physics · Physics 2007-05-23 Laszlo B. Kish

In (Nature) Science Report 5 (2015) 13653, Vadai, Mingesz and Gingl (VMG) introduce a new Kirchhoff-law-Johnson-noise (KLJN) secure key exchanger that operates with 4 arbitrary resistors (instead of 2 arbitrary resistance values forming 2…

Cryptography and Security · Computer Science 2020-12-07 Shahriar Ferdous , Christiana Chamon , Laszlo B. Kish

The information-theoretically (unconditionally) secure Kirchhoff-law-Johnson-noise (KLJN) bit exchange protocol uses two identical resistor pairs with high (H) and low (L) resistance values, driven by Gaussian noise generators emulating…

Signal Processing · Electrical Eng. & Systems 2025-04-16 Recep Akif Tasci , Ibrahim Yildirim , Ertugrul Basar

In a former paper [Fluct. Noise Lett., 13 (2014) 1450020] we introduced a vehicular communication system with unconditionally secure key exchange based on the Kirchhoff-Law-Johnson-Noise (KLJN) key distribution scheme. In this paper, we…

Cryptography and Security · Computer Science 2015-01-09 X. Cao , Y. Saez , G. Pesti , L. B. Kish

Recently, we proposed a classical communicator which was inspired by the Kirchhoff-loop-Johnson-like-Noise (KLJN) communicator and was claimed totally secure. Here we withdraw this claim and prove that, similarly to earlier intuitive…

General Physics · Physics 2007-05-23 Laszlo B. Kish
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