Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9785517 | Optics Communications | 2005 | 6 Pages |
Abstract
We present an analysis of the sensitivity to misalignment, illuminating wavelength change or construction parameters alterations for a zone plate used in an encryption method. The security system is based on a computer generated toroidal phase mask. We use a processor where this phase mask is placed in the Fourier plane of the object to be encrypted. As the original-data recovering is performed by using the conjugate of the encryption mask, a perfect match with the original conditions or the mask characteristics influences not only on the quality of the decrypted image, but also in the success of the method. Our results show that the scheme is an optimized design concerning both data storage and encryption as exhibit less degenerate noise while keeping the security standards of other methods.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
John Fredy Barrera, Rodrigo Henao, Roberto Torroba,