Optical digital chaos cryptography

Álvaro Arenas-Pingarrón; Ana P. González-Marcos; José M. Rivas-Moscoso; José A. Martín-Pereda

doi:10.1117/12.737789

8 October 2007 Optical digital chaos cryptography

Álvaro Arenas-Pingarrón, Ana P. González-Marcos, José M. Rivas-Moscoso, José A. Martín-Pereda

Proceedings Volume 6741, Optics and Photonics for Counterterrorism and Crime Fighting III; 67410L (2007) https://doi.org/10.1117/12.737789
Event: Optics/Photonics in Security and Defence, 2007, Florence, Italy

Abstract

In this work we present a new way to mask the data in a one-user communication system when direct sequence - code division multiple access (DS-CDMA) techniques are used. The code is generated by a digital chaotic generator, originally proposed by us and previously reported for a chaos cryptographic system. It is demonstrated that if the user's data signal is encoded with a bipolar phase-shift keying (BPSK) technique, usual in DS-CDMA, it can be easily recovered from a time-frequency domain representation. To avoid this situation, a new system is presented in which a previous dispersive stage is applied to the data signal. A time-frequency domain analysis is performed, and the devices required at the transmitter and receiver end, both user-independent, are presented for the optical domain.

Citation Download Citation

Álvaro Arenas-Pingarrón, Ana P. González-Marcos, José M. Rivas-Moscoso, and José A. Martín-Pereda "Optical digital chaos cryptography", Proc. SPIE 6741, Optics and Photonics for Counterterrorism and Crime Fighting III, 67410L (8 October 2007); https://doi.org/10.1117/12.737789

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available