Theory of cryptography | Chaos theory | Nonlinear systems

Chaos communications

Chaos communications is an application of chaos theory which is aimed to provide security in the transmission of information performed through telecommunications technologies. By secure communications, one has to understand that the contents of the message transmitted are inaccessible to possible eavesdroppers. In chaos communications security (i.e., privacy) is based on the complex dynamic behaviors provided by chaotic systems. Some properties of chaotic dynamics, such as , noise-like dynamics (pseudorandom noise) and spread spectrum, are used to encode data. On the other hand, chaos being a deterministic phenomenon, it is possible to decode data using this determinism. In practice, implementations of chaos communications devices resort to one of two chaotic phenomena: synchronization of chaos, or control of chaos. To implement chaos communications using such properties of chaos, two chaotic oscillators are required as a transmitter (or master) and receiver (or slave). At the transmitter, a message is added onto a chaotic signal and then, the message is masked in the chaotic signal. As it carries the information, the chaotic signal is also called chaotic carrier. Synchronizing of these oscillators is similar to synchronizing random neural nets in neural cryptography. When chaos synchronization is used, a basic scheme of a communications device (Cuomo and Oppenheim 1993) is made by two identical chaotic oscillators. One of them is used as the transmitter, and the other as the receiver. They are connected in a configuration where the transmitter drives the receiver in such a way that identical synchronization of chaos between the two oscillators is achieved. For the purpose of transmission of information, at the transmitter, a message is added as a small perturbation to the chaotic signal that drives the receiver. In this way, the message transmitted is masked by the chaotic signal. When the receiver synchronizes to the transmitter, the message is decoded by a subtraction between the signal sent by transmitter and its copy generated at the receiver by means of the synchronization of chaos mechanism. This works because, whilst the transmitter output contains the chaotic carrier plus the message, the receiver output is made only by a copy of the chaotic carrier without the message. (Wikipedia).

Video thumbnail

Chaos9 Research today

www.chaos-math.org

From playlist Chaos English

Video thumbnail

Credit roll for Chaos

www.chaos-math.org

From playlist Chaos 日本語

Video thumbnail

Generiek Chaos

www.chaos-math.org

From playlist Chaos nederlands

Video thumbnail

Chaos2 Vector fields : The lego race

www.chaos-math.org

From playlist Chaos English

Video thumbnail

Chaos6 Chaos and the horseshoe

www.chaos-math.org

From playlist Chaos English

Video thumbnail

Chaos6 Chaos en het hoefijzer

www.chaos-math.org

From playlist Chaos nederlands

Video thumbnail

Chaos5 Duhem's bull

www.chaos-math.org

From playlist Chaos English

Video thumbnail

Chaos8 Statistics : Lorenz' mill

www.chaos-math.org

From playlist Chaos English

Video thumbnail

MAE5790-25 Using chaos to send secret messages

Lou Pecora and Tom Carroll's work on synchronized chaos. Proof of synchronization by He and Vaidya, using a Liapunov function. Kevin Cuomo and Alan Oppenheim's approach to sending secret messages with chaos. Secure versus private communications. Anecdotes about Princess Diana, the early da

From playlist Nonlinear Dynamics and Chaos - Steven Strogatz, Cornell University

Video thumbnail

DEFCON 20: World War 3.0: Chaos, Control & the Battle for the Net

Panel: OSHUA CORMAN DIRECTOR OF SECURITY INTELLIGENCE, AKAMAI TECHNOLOGIES DAN KAMINSKY JEFF MOSS FOUNDER, DEF CON AND BLACK HAT ROD BECKSTROM MICHAEL JOSEPH GROSS AUTHOR OF THE VANITY FAIR ARTICLE 'A DECLARATION OF CYBER-WAR', MODERATOR There is a battle under way for control of the Int

From playlist DEFCON 20

Video thumbnail

DevOpsDays Boston 2019 - Let's Get Ready for Chaotic Engineering by Suzan Mahboob

Let's Get Ready for Chaotic Engineering by Suzan Mahboob It’s important to recognize not everyone can take on chaotic engineering, there are multiple factors that we have to take into consideration. production is extremely complex and we don’t always know how to untangle it. This talk wil

From playlist DevOpsDays Boston 2019

Video thumbnail

January 27, 2013 Sermon at Yale University Church

Bonita Grubbs, Executive Director of Christian Community Action in New Haven, preaches at the weekly worship service in Battell Chapel. The January 27 service was the annual joint service of the University Church and the Black Church at Yale for Yale's MLK Week. The University Church is

From playlist The University Church in Yale Weekly Sermons

Video thumbnail

Spatio-temporal chaos in a driven dissipative Duffing chain: an OTOC... by Amit Kumar Chatterjee

DISCUSSION MEETING: 7TH INDIAN STATISTICAL PHYSICS COMMUNITY MEETING ORGANIZERS : Ranjini Bandyopadhyay, Abhishek Dhar, Kavita Jain, Rahul Pandit, Sanjib Sabhapandit, Samriddhi Sankar Ray and Prerna Sharma DATE: 19 February 2020 to 21 February 2020 VENUE: Ramanujan Lecture Hall, ICTS Ba

From playlist 7th Indian Statistical Physics Community Meeting 2020

Video thumbnail

Jim Gilliam Believes the Internet Can Save Us From Ourselves | Big Think

Jim Gilliam Believes the Internet Can Save Us From Ourselves Watch the newest video from Big Think: https://bigth.ink/NewVideo Join Big Think Edge for exclusive videos: https://bigth.ink/Edge ---------------------------------------------------------------------------------- Who would have

From playlist Best Videos | Big Think

Video thumbnail

Using Chaos Toolkit To Determine Resiliency For Your Web App | PyChain 2022

This is a video recording of the PyChain 2022 conference lightning talks sessions. Speaker - Karan Balkar - LTI How to determine the resiliency of their application under a chaos situation using Chaos toolkit More often than not developers face a lot of issues when scaling their applica

From playlist PyChain 2022

Video thumbnail

January 29, 2012 Worship Service at Yale University Church

The Rev. Callista Isabelle, Associate University Chaplain, preaches at the weekly Sunday worship service in Battell Chapel. This sermon was delivered at the University Church in Yale at Sunday morning worship. The University Church is an ecumenical campus Christian community serving

From playlist The University Church in Yale Weekly Sermons

Video thumbnail

DevOpsDays Baltimore 2019 - The Psychology of Chaos Engineering by Matty Stratton

DevOpsDays Baltimore 2019 - The Psychology of Chaos Engineering by Matty Stratton Chaos Engineering, failure injection, and similar practices have verified benefits to the resilience of systems and infrastructure. But can they provide similar resilience to teams and people? What are the e

From playlist DevOpsDays Baltimore 2019

Video thumbnail

30C3: Closing Event (DE)

For more information and to download the video visit: http://bit.ly/30C3_info Playlist 30C3: http://bit.ly/30c3_pl Speaker: ths

From playlist 30C3

Related pages

Synchronization of chaos | Pseudorandom noise | Neural cryptography | Chaos theory | Deterministic system | Control of chaos