Quantum cryptography outperformed by classical technique

June 17, 2012

The KLJN scheme is a statistical-physical competitor to quantum communicators whose security is based on Kirchhoff's Loop Law and the Fluctuation-Dissipation Theorem (credit: R. Mingesz et al)

The secrecy of a controversial new cryptographic technique is guaranteed, not by quantum mechanics, but by the laws of thermodynamics, say physicists, Technology Review Physics arXiv Blog reports.

Laszlo Kish at the Texas A&M University in College Station and associates have found another way to send information, which they claim guarantees complete security, guaranteed by the second law of thermodynamics.

Ref.: R. Mingesz et al., Information Theoretic Security By The Laws Of Classical Physics, arxiv.org/abs/1206.2534