We present several joint transform correlator (JTC) architectures for nonlinear images encryption, decryption and authentication systems. These JTC architectures are developed in different processing domains, such as Fourier, Fractional Fourier, Fresnel and Gyrator domains. Some of these processing domains can add new security keys in order to improve the security of the images encryption, decryption and authentication systems. In this work, we review and present recent nonlinear modifications of encryption decryption and authentication systems based on JTC architecture that allow to significantly increase the quality of the retrieved image after information decryption, and to achieve a high security level against a variety of system attacks.

Date Published: 22 August 2017
PDF: 6 pages
Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 1045336 (22 August 2017); doi: 10.1117/12.2276425

Published in SPIE Proceedings Vol. 10453:
Third International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)