Rights statement: Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Final published version, 644 KB, PDF document
Available under license: CC BY
Final published version
Licence: CC BY
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Coupling functions enable secure communications
AU - Stankovski, Tomislav
AU - McClintock, Peter V. E.
AU - Stefanovska, Aneta
N1 - Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
PY - 2014/2/26
Y1 - 2014/2/26
N2 - Secure encryption is an essential feature of modern communications, but rapid progress in illicit decryption brings a continuing need for new schemes that are harder and harder to break. Inspired by the time-varying nature of the cardiorespiratory interaction, here we introduce a new class ofsecure communications that is highly resistant to conventional attacks. Unlike all earlier encryption procedures, this cipher makes use of the coupling functions between interacting dynamical systems.It results in an unbounded number of encryption key possibilities, allows the transmission/reception of more than one signal simultaneously, and is robust against external noise. Thus, the information signals are encrypted as the time-variations of linearly-independent coupling functions. Using predetermined forms of coupling function, we can apply Bayesian inference on the receiver side todetect and separate the information signals while simultaneously eliminating the effect of external noise. The scheme is highly modular and is readily extendable to support different communications applications within the same general framework.
AB - Secure encryption is an essential feature of modern communications, but rapid progress in illicit decryption brings a continuing need for new schemes that are harder and harder to break. Inspired by the time-varying nature of the cardiorespiratory interaction, here we introduce a new class ofsecure communications that is highly resistant to conventional attacks. Unlike all earlier encryption procedures, this cipher makes use of the coupling functions between interacting dynamical systems.It results in an unbounded number of encryption key possibilities, allows the transmission/reception of more than one signal simultaneously, and is robust against external noise. Thus, the information signals are encrypted as the time-variations of linearly-independent coupling functions. Using predetermined forms of coupling function, we can apply Bayesian inference on the receiver side todetect and separate the information signals while simultaneously eliminating the effect of external noise. The scheme is highly modular and is readily extendable to support different communications applications within the same general framework.
U2 - 10.1103/PhysRevX.4.011026
DO - 10.1103/PhysRevX.4.011026
M3 - Journal article
VL - 4
JO - Physical Review X
JF - Physical Review X
SN - 2160-3308
M1 - 011026
ER -