Reconfigurable random bit storage using polymer-dispersed liquid crystal
Abstract
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/mm^3), 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.
Additional Information
Authors (RH & SA) contributed equally to this work.Attached Files
Submitted - 1403.2419v1.pdf
Supplemental Material - Supplementary_text.pdf
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Additional details
- Eprint ID
- 44825
- Resolver ID
- CaltechAUTHORS:20140409-124558217
- Created
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2014-04-09Created from EPrint's datestamp field
- Updated
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2023-06-02Created from EPrint's last_modified field