Ads by TechWords

See your link here
Receive the latest technology news and information.
Security
Computerworld Daily News (First Look and Wrap-Up)
Computerworld Blogs Newsletter
The Weekly Top 10
Cloud Computing
View all newsletters




Privacy Policy
 

Study shows how photonic decoys can foil hackers

Technique uses quantum cryptography to guard fiber-optic networks

February 23, 2006 12:00 PM ET

Network World - A University of Toronto professor and researcher has demonstrated for the first time a new technique for safeguarding data transmitted over fiber-optic networks using quantum cryptography.

Professor Hoi-Kwong Lo, a member of the school's Centre for Quantum Information and Quantum Control, is the senior author of a study that sheds light on using what's called a photonic decoy technique for encrypting data.

Quantum cryptography is starting to be used by the military, banks and other organizations that seek to better protect the data on their networks. This sort of cryptography uses photons to carry encryption keys, which is considered safer than protecting data via traditional methods that powerful computers can crack. Quantum cryptography is based on fundamental laws of physics, such that merely observing a quantum object alters it.

Lo's team used modified quantum key distribution equipment from Id Quantique and a 9.3-mile fiber-optic link to demonstrate the use of decoys in data transmissions and to alert receiving computers about which photons were legit and which were phony. The technique is designed to support high key generation rates over long distances.

Lo's study is slated to appear in the Feb. 24 issue of Physical Review Letters.

Lo notes that existing products, such as those from Id Quantique and MagiQ Technologies, are for point-to-point applications used by the military and security-sensitive businesses. "In the long run, one can envision a global quantum cryptographic network, either based on satellite relays or based on quantum repeaters," he says.

University researchers are fueling many advances in network security. A University of Indiana professor recently revealed technology for thwarting phishing and pharming culprits by using a technique called active cookies.


Reprinted with permission from

For more information about enterprise networking, go to NetworkWorld.com
Story copyright 2009 Network World, Inc. All rights reserved.

Jump to comments

Security

Additional Resources

WHITE PAPER
Approximately 60 percent of data migration projects overrun time or budget, while some fail completely. Download this white paper, "Enhancing Your Chance for Successful Data Migration," to learn the critical steps you need to take to execute a data migration project with minimum cost and risk to your business.
WHITE PAPER
Read the Gartner research note to learn why the TCO of a server-based computing deployment used to deliver all applications to users is around 50% lower than that of an unmanaged desktop deployment.
WHITE PAPER
Economic downturns have a tendency to accelerate emerging technologies, boost the adoption of effective solutions, and punish solutions that are not cost competitive or that are out of synch with industry trends. This IDC White Paper presents the results of an IDC survey of 330 companies in Western Europe, Asia/Pacific and the Americas that measures the receptiveness to Linux and takes into consideration changing views driven by the disruptive economic environment that businesses face today.

White Papers & Webcasts

Managing Secure File Transfer to Save Time, Money and IT Resources
Learn how companies are using innovative technology to overcome these challenges and improve user productivity by offloading e-mail attachments and replacing FTP with...

Can Heuristic Technology Help Your Company Fight Viruses?
What is Heuristic Technology and how can it help safeguard your business against viruses? Learn more.  

Security Convergence Equals Network Security Cost Savings
Listen to IBM Internet Security Systems' take on network security convergence.

Why Email Must Operate 24/7 and How to Make This Happen
Learn how to avoid an email outage by implementing a hosted email continuity solution.  

Disaster Recovery 2008: Reduced Costs and Improved Performance
How long can your Enterprise afford to be without your data? With an accelerated disaster recovery program, you never have to answer this...