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Reconfigurable random bit storage using polymer-dispersed liquid crystal

Publication ,  Journal Article
Horstmeyer, R; Assawaworrarit, S; Yang, C
March 10, 2014

We present an optical method of storing random cryptographic keys, at high densities, within an electronically reconfigurable volume of polymer-dispersed liquid crystal (PDLC) film. We demonstrate how temporary application of a voltage above PDLC's saturation threshold can completely randomize (i.e., decorrelate) its optical scattering potential in less than a second. A unique optical setup is built around this resettable PDLC film to non-electronically save many random cryptographic bits, with minimal error, over a period of one day. These random bits, stored at an unprecedented density (10 Gb per cubic millimeter), can then be erased and transformed into a new random key space in less than one second. Cryptographic applications of such a volumetric memory device include use as a crypto-currency wallet and as a source of resettable "fingerprints" for time-sensitive authentication.

Duke Scholars

Publication Date

March 10, 2014
 

Citation

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Horstmeyer, R., Assawaworrarit, S., & Yang, C. (2014). Reconfigurable random bit storage using polymer-dispersed liquid crystal.
Horstmeyer, Roarke, Sid Assawaworrarit, and Changhuei Yang. “Reconfigurable random bit storage using polymer-dispersed liquid crystal,” March 10, 2014.
Horstmeyer R, Assawaworrarit S, Yang C. Reconfigurable random bit storage using polymer-dispersed liquid crystal. 2014 Mar 10;
Horstmeyer R, Assawaworrarit S, Yang C. Reconfigurable random bit storage using polymer-dispersed liquid crystal. 2014 Mar 10;

Publication Date

March 10, 2014