Polarization encoding using number of stacking sheets as additional key information

Author

Yamamoto, H. ; Harada, K. ; Matsushita, K. ; Imagawa, T. ; Suyama, S.

Author_Institution

CREST, Univ. of Tokushima, Tokushima, Japan

fYear

2011

fDate

18-20 May 2011

Firstpage

1

Lastpage

2

Abstract

Polarization encoding is one of encryption techniques that employ physical keys. Secret information is decoded without any calculations and can be distributed on social contacts. In this paper, we propose two types of compositions of polarization-encrypted sheets. A film-based type is composed of two quarter-wave retarder films that are attached together. The other type is composed of pieces of retarder film that are pasted on a glass substrate. We have developed polarization-encrypted sheets in both types. Decoding with 26-layered sheets has been demonstrated. Furthermore, contrast of decoded results are compared experimentally.

Keywords

cryptography; decoding; encoding; light polarisation; optical films; 26-layered sheets; SiO₂; encryption techniques; glass substrate; polarization encoding; polarization-encrypted sheets; quarter-wave retarder films; secret information decoding; social contacts; stacking sheets; Cryptography; Glass; Optical films; Optical polarization; Stacking; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Photonics (IP), 2011 ICO International Conference on

Conference_Location

Ottawa, ON

Print_ISBN

978-1-61284-315-5

Type

conf

DOI

10.1109/ICO-IP.2011.5953809

Filename

5953809