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Audio and optical cryptography

Desmedt, Y; Hou, S; Quisquater, JJ; (1998) Audio and optical cryptography. In: Ohta, K and Pei, D, (eds.) ADVANCES IN CRYPTOLOGY - ASIACRYPT'98. (pp. 392 - 404). SPRINGER-VERLAG BERLIN

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Abstract

In visual cryptography the additive property of light is used. Also the shares are random and therefore suspect to a censor. In this paper we present two new cryptographic schemes which use music and the wave properties of light. Both schemes are also secret sharing schemes in which shares are music or images and are not suspect to a human censor. Our scheme guarantees perfect privacy as well as high quality. To decrypt the message, one just plays two shares on a stereo system. There are two decryption methods which are either based on the interference property of sound or based on the stereo perception of the human hearing system. In optical cryptography, we use pictures as covers and the wave interference property of light. The privacy is perfect and the modified images are non-suspicious. The Mach-Zehnder interferometer is used as the decryption machine.

Type:Proceedings paper
Title:Audio and optical cryptography
Event:International Conference on the Theory and Application of Cryptology and Information Security
Location:BEIJING, PEOPLES R CHINA
Dates:1998-10-18 - 1998-10-22
ISBN:3-540-65109-8
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Computer Science

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