Communications of the ACM
Multiplicative Non-abelian Sharing Schemes and their Application to Threshold Cryptography
ASIACRYPT '94 Proceedings of the 4th International Conference on the Theory and Applications of Cryptology: Advances in Cryptology
Proceedings of the First International Workshop on Information Hiding
Extended visual secret sharing schemes with high-quality shadow images using gray sub pixels
ICIAR'05 Proceedings of the Second international conference on Image Analysis and Recognition
A brief survey of research jointly with jean-jacques quisquater
Cryptography and Security
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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.