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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

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

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

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

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

This paper demonstrates the vulnerability of the Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchanger to compromised random number generator(s) even if these random numbers are used solely to generate the noises emulating the Johnson…

Cryptography and Security · Computer Science 2021-07-20 Christiana Chamon , Shahriar Ferdous , Laszlo Kish

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

This paper introduces a new attack against the Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange scheme. The attack is based on the nonlinearity of the noise generators. We explore the effect of total distortion (TD) at the second…

Cryptography and Security · Computer Science 2021-08-24 Christiana Chamon , 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

This paper introduces and demonstrates two new attacks against the Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange scheme. The attacks are based on random number generators with compromised security. First we explore the situation in…

Cryptography and Security · Computer Science 2020-05-22 Christiana Chamon , Shahriar Ferdous , Laszlo B. Kish

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

We introduce two new Kirchhoff-law-Johnson-noise (KLJN) secure key distribution schemes which are generalizations of the original KLJN scheme. The first of these, the Random-Resistor (RR-) KLJN scheme, uses random resistors with values…

Emerging Technologies · Computer Science 2016-03-04 Laszlo Bela Kish , Claes-Goran Granqvist

Recently, Bennett and Riedel (BR) (http://arxiv.org/abs/1303.7435v1) argued that thermodynamics is not essential in the Kirchhoff-law-Johnson-noise (KLJN) classical physical cryptographic exchange method in an effort to disprove the…

Cryptography and Security · Computer Science 2013-12-18 Laszlo B. Kish , Derek Abbott , Claes-Goran Granqvist

This paper introduces and demonstrates four new statistical attacks against the Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange scheme. The attacks utilize compromised random number generators at Alice's/Bob's site(s). The case of…

Cryptography and Security · Computer Science 2021-10-08 Christiana Chamon , Shahriar Ferdous , Laszlo B. Kish

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

We introduce a protocol with a reconfigurable filter system to create non-overlapping single loops in the smart power grid for the realization of the Kirchhoff-Law-Johnson-(like)-Noise secure key distribution system. The protocol is valid…

Cryptography and Security · Computer Science 2013-12-18 Elias Gonzalez , Laszlo B. Kish , Robert Balog , Prasad Enjeti

This paper deals with the Kirchhoff-law-Johnson-noise (KLJN) classical statistical physical key exchange method and surveys criticism - often stemming from a lack of understanding of its underlying premises or from other errors - and our…

Emerging Technologies · Computer Science 2015-03-30 Laszlo B. Kish , Derek Abbott , Claes-Goran Granqvist , He Wen

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

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

This paper introduces a three-point biometric authentication system for a blockchain-based decentralized identity network. We use existing biometric authentication systems to demonstrate the unique noise fingerprints that belong to each…

Cryptography and Security · Computer Science 2024-09-10 Sarah A. Flanery , Christiana Chamon
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