All-Optical video-image encryption enforced security level using ICA

Ayman Alfalou (1) , Ali Mansour (2)

1 L@BISEN - Laboratoire ISEN
2 Lab-STICC_ENSTAB_CACS_COM

In the last two decades, wireless communications have been introduced in various applications. However, the transmitted data can be, at any moment, intercepted by non-authorized person. That could be explain why data encryption and secure transmission have gained enormous popularity. In order to secure data transmission, one should pay attention to two problems: transmission rate and encryption security level. In this manuscript, we address the last two problems by proposing a new videoimage transmission scheme. The new system consists in using the advantage of optical high transmission rate and some powerful signal processing tools to secure the transmitted data. The main idea of our approach is to secure the transmitted information at two levels: classical level using an adaptation of standard optical technic and second level (spatial diversity) using independent transmitters. In the second level, a hacker should intercept not one channel but all of them in order to retrieve the information. At designed receiver, one can easily apply ICA algorithms to decrypt the received signals and retrieve the information.

Mots clés: Decryption; Multiple-image encryption; ICA; Fourier transform; Blind Source Separation; Decorrelation; Second and Higher Order Statistics; Signal and Image Processing; Transmission; Whiteness multiple-image encryption; position multiplexing; double random-phase encoding; Fresnel transform; Optical Image Encryption

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]; Optique / photonique

Ayman Alfalou, Ali Mansour. All-Optical video-image encryption enforced security level using ICA. Journal of Optics A: Pure and Applied Optics, 2007, 9, pp.787-796. ⟨hal-00579211⟩