Physical key-protected one-time pad

Scientific Reports
Roarke HorstmeyerChanghuei Yang

Abstract

We describe an encrypted communication principle that forms a secure link between two parties without electronically saving either of their keys. Instead, random cryptographic bits are kept safe within the unique mesoscopic randomness of two volumetric scattering materials. We demonstrate how a shared set of patterned optical probes can generate 10 gigabits of statistically verified randomness between a pair of unique 2 mm(3) scattering objects. This shared randomness is used to facilitate information-theoretically secure communication following a modified one-time pad protocol. Benefits of volumetric physical storage over electronic memory include the inability to probe, duplicate or selectively reset any bits without fundamentally altering the entire key space. Our ability to securely couple the randomness contained within two unique physical objects can extend to strengthen hardware required by a variety of cryptographic protocols, which is currently a critically weak link in the security pipeline of our increasingly mobile communication culture.

References

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Nov 29, 2012·Optics Express·Roarke HorstmeyerChanghuei Yang

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Citations

Feb 24, 2016·Nature Nanotechnology·Zhaoying HuShu-Jen Han
Apr 11, 2017·Scientific Reports·Georgios M Nikolopoulos, Eleni Diamanti
Apr 5, 2017·Applied Optics·Benjamin R AndersonHergen Eilers
Jul 23, 2019·Advanced Materials·Jiangang FengYuchen Wu
Feb 2, 2018·Science Advances·Miguel R Carro-TembouryThomas Just Sørensen
May 15, 2015·Optics Express·Ivo M Vellekoop
Jan 18, 2020·Nature Communications·Jung Woo LeemYoung L Kim
Jun 13, 2014·Applied Optics·Kazuya NakanoMasahiro Yamaguchi
Feb 25, 2018·Optics Express·Brian C GrubelAmy C Foster
Aug 9, 2017·Optics Express·Brian C GrubelAmy C Foster
Apr 17, 2020·Scientific Reports·Haiyan Wang, Rafael Piestun
Feb 19, 2020·Scientific Reports·Stefan RotheJürgen W Czarske
Jan 27, 2019·Scientific Reports·Evgeniia A StepanidenkoAlexander V Baranov
Nov 7, 2019·Optics Express·Georgios M Nikolopoulos
Nov 4, 2020·Nature Communications·Alexander ScholzJasmin Aghassi-Hagmann
Jul 9, 2021·Nature Communications·Marco LeonettiGiancarlo Ruocco
Jan 17, 2019·ACS Applied Materials & Interfaces·Riikka Arppe-TabbaraThomas Just Sørensen
Feb 28, 2019··Mehdi Haji Heidari VarnosfaderaniManojit Pramanik

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Software Mentioned

Matlab

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