Change search
ReferencesLink to record
Permanent link

Direct link
Synchronization of spatiotemporal semiconductor lasers and its application in color image encryption
Umeå University, Faculty of Science and Technology, Department of Physics.
2011 (English)In: Optics Communications, ISSN 0030-4018, E-ISSN 1873-0310, Vol. 284, no 9, 2278-2291 p.Article in journal (Refereed) Published
Abstract [en]

Optical chaos is a topic of current research characterized by high-dimensional nonlinearity which is attributed to the delay-induced dynamics, high bandwidth and easy modular implementation of optical feedback. In light of these facts, which add enough confusion and diffusion properties for secure communications, we explore the synchronization phenomena in spatiotemporal semiconductor laser systems. The novel system is used in a two-phase colored image encryption process. The high-dimensional chaotic attractor generated by the system produces a completely randomized chaotic time series, which is ideal in the secure encoding of messages. The scheme thus illustrated is a two-phase encryption method, which provides sufficiently high confusion and diffusion properties of chaotic cryptosystem employed with unique data sets of processed chaotic sequences. In this novel method of cryptography, the chaotic phase masks are represented as images using the chaotic sequences as the elements of the image. The scheme drastically permutes the positions of the picture elements. The next additional layer of security further alters the statistical information of the original image to a great extent along the three-color planes. The intermediate results during encryption demonstrate the infeasibility for an unauthorized user to decipher the cipher image. Exhaustive statistical tests conducted validate that the scheme is robust against noise and resistant to common attacks due to the double shield of encryption and the infinite dimensionality of the relevant system of partial differential equations.

Place, publisher, year, edition, pages
2011. Vol. 284, no 9, 2278-2291 p.
Keyword [en]
Semi conductor laser, Spatiotemporal chaos, Synchronization, Image cryptography, Chaotic sequences, Chaotic phase mask
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:umu:diva-104459DOI: 10.1016/j.optcom.2010.12.077ISI: 000288527500005OAI: diva2:823725
Available from: 2015-06-18 Created: 2015-06-11 Last updated: 2015-10-06Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Misra, Amar P
By organisation
Department of Physics
In the same journal
Optics Communications
Atom and Molecular Physics and Optics

Search outside of DiVA

GoogleGoogle ScholarTotal: 1 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 38 hits
ReferencesLink to record
Permanent link

Direct link