Unconditional security by the laws of classical physics

Robert Mingesz, Laszlo Bela Kish, Z. Gingl, Claes Göran Granqvist, He Wen, Ferdinand Peper, Travis Eubanks, Gabor Schmera

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

There is an ongoing debate about the fundamental security of existing quantum key exchange schemes. This debate indicates not only that there is a problem with security but also that the meanings of perfect, imperfect, conditional and unconditional (information theoretic) security in physically secure key exchange schemes are often misunderstood. It has been shown recently that the use of two pairs of resistors with enhanced Johnsonnoise and a Kirchhoff-loop - i.e., a Kirchhoff-Law-Johnson-Noise (KLJN) protocol - for secure key distribution leads to information theoretic security levels superior to those of today's quantum key distribution. This issue is becoming particularly timely because of the recent full cracks of practical quantum communicators, as shown in numerous peer-reviewed publications. The KLJN system is briefly surveyed here with discussions about the essential questions such as (i) perfect and imperfect security characteristics of the key distribution, and (ii) how these two types of securities can be unconditional (or information theoretical).

Original languageEnglish
Pages (from-to)3-16
Number of pages14
JournalMetrology and Measurement Systems
Volume20
Issue number1
DOIs
Publication statusPublished - 2013

Fingerprint

Security of data
Physics
Quantum cryptography
physics
Kirchhoff law
Resistors
Cracks
resistors
cracks

Keywords

  • Information theoretic security
  • Quantum encryption
  • Secure key distribution
  • Secure key exchange
  • Unconditional security

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Instrumentation

Cite this

Mingesz, R., Kish, L. B., Gingl, Z., Granqvist, C. G., Wen, H., Peper, F., ... Schmera, G. (2013). Unconditional security by the laws of classical physics. Metrology and Measurement Systems, 20(1), 3-16. https://doi.org/10.2478/mms-2013-0001

Unconditional security by the laws of classical physics. / Mingesz, Robert; Kish, Laszlo Bela; Gingl, Z.; Granqvist, Claes Göran; Wen, He; Peper, Ferdinand; Eubanks, Travis; Schmera, Gabor.

In: Metrology and Measurement Systems, Vol. 20, No. 1, 2013, p. 3-16.

Research output: Contribution to journalArticle

Mingesz, R, Kish, LB, Gingl, Z, Granqvist, CG, Wen, H, Peper, F, Eubanks, T & Schmera, G 2013, 'Unconditional security by the laws of classical physics', Metrology and Measurement Systems, vol. 20, no. 1, pp. 3-16. https://doi.org/10.2478/mms-2013-0001
Mingesz, Robert ; Kish, Laszlo Bela ; Gingl, Z. ; Granqvist, Claes Göran ; Wen, He ; Peper, Ferdinand ; Eubanks, Travis ; Schmera, Gabor. / Unconditional security by the laws of classical physics. In: Metrology and Measurement Systems. 2013 ; Vol. 20, No. 1. pp. 3-16.
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