## Cryptology ePrint Archive: Report 2002/194

A polarisation based Visual Crypto System and its Secret Sharing Schemes

P. Tuyls, H.D.L. Hollmann, J.H.v. Lint, L. Tolhuizen

Abstract: In this paper, we present a new visual crypto system based on the polarisation of light and investigate the existence and structure of the associated threshold visual secret sharing schemes. It is shown that very efficient $(n,n)$ schemes exist and that $(2,n)$ schemes are equivalent to binary codes. The existence of $(k,n)$ schemes is shown in general by two explicit constructions. Finally, bounds on the physical properties as contrast and resolution are derived.

Category / Keywords: secret-key cryptography / Light Polarisation, XOR, (MDS) codes, Threshold Visual Secret Sharing Schemes

Date: received 19 Dec 2002

Contact author: pim tuyls at philips com

Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | BibTeX Citation

Short URL: ia.cr/2002/194

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