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arXiv · 2005.11002

AC Loop Current Attacks Against The KLJN Secure Key Exchange Scheme

Mutaz Melhem·Christiana Chamon·Shahriar Ferdous·Laszlo B. Kish
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Abstract

A new attack against the Kirchhoff-Law-Johnson-Noise(KLJN) secure key exchange scheme is introduced. The attack exploits a parasitic (periodic) AC voltage-source at either Alice or Bob ends. Such situations exist due to AC ground loops and electromagnetic interference (EMI). In the low-frequency case, the procedure is the generalized form of the former DC ground loop based attack. In the high-frequency case, the power spectrum of the wire voltage is utilized. The attack is demonstrated in both the low and the high-frequency situations. Defense protocols against the attack are also discussed.

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Mutaz Melhem, Christiana Chamon, Shahriar Ferdous, Laszlo B. Kish. 2020-05-22. AC Loop Current Attacks Against The KLJN Secure Key Exchange Scheme. https://doi.org/10.1142/s0219477521500504

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