Generalized Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange system using arbitrary resistors

Abstract

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 components - identical resistor pairs, switches and interconnecting wires - to guarantee perfectly protected data transmission. We show that a generalized KLJN system can provide unconditional security even if it is used with significantly less limitations. The more universal conditions ease practical realizations considerably and support more robust protection against attacks. Our theoretical results are confirmed by numerical simulations.

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Cited by in corpus (13)

• Communication by Means of Thermal Noise: Towards Networks with Extremely Low Power Consumption
• Random-resistor-random-temperature Kirchhoff-law-Johnson-noise (RRRT-KLJN) key exchange
• Comments on the "Generalized" KLJN Key Exchanger with Arbitrary Resistors: Power, Impedance, Security
• Cable Capacitance Attack against the KLJN Secure Key Exchange
• Comments On "A New Transient Attack On The Kish Key Distribution System"
• Deterministic Random Number Generator Attack against the Kirchhoff-Law-Johnson-Noise Secure Key Exchange Protocol
• AC Loop Current Attacks Against The KLJN Secure Key Exchange Scheme
• Perspective -- On the thermodynamics of perfect unconditional security
• Generalized DC loop current attack against the KLJN secure key exchange scheme
• Kirchhoff Meets Johnson: In Pursuit of Unconditionally Secure Communication
• Random Number Generator Attack against the Kirchhoff-Law-Johnson-Noise Secure Key Exchange Protocol
• Unconditionally secure credit/debit card chip scheme and physical unclonable function
• Nonlinearity Attack against the Kirchhoff-Law-Johnson-Noise (KLJN) Secure Key Exchange Protocol