Digital eavesdroppers beware of new BGU device

Engineers have developed an encryption technique that enables stealthy transmission of any optical communications signal.

By
February 22, 2013 04:55
1 minute read.
An officer speaks on the phone at the new IDF cyber-defense control center.

IDF officer on phone, computers 370. (photo credit: IDF Spokesman’s Office)

 
X

Dear Reader,
As you can imagine, more people are reading The Jerusalem Post than ever before. Nevertheless, traditional business models are no longer sustainable and high-quality publications, like ours, are being forced to look for new ways to keep going. Unlike many other news organizations, we have not put up a paywall. We want to keep our journalism open and accessible and be able to keep providing you with news and analyses from the frontlines of Israel, the Middle East and the Jewish World.

As one of our loyal readers, we ask you to be our partner.

For $5 a month you will receive access to the following:

  • A user experience almost completely free of ads
  • Access to our Premium Section
  • Content from the award-winning Jerusalem Report and our monthly magazine to learn Hebrew - Ivrit
  • A brand new ePaper featuring the daily newspaper as it appears in print in Israel

Help us grow and continue telling Israel’s story to the world.

Thank you,

Ronit Hasin-Hochman, CEO, Jerusalem Post Group
Yaakov Katz, Editor-in-Chief

UPGRADE YOUR JPOST EXPERIENCE FOR 5$ PER MONTH Show me later

Eavesdropping and jamming are a growing danger to optical communications systems, which transmit a rapidly growing amount of digital data that require a high level of security.

Now, engineers at Ben-Gurion University of the Negev in Beersheba and Bar-Ilan University in Ramat Gan have developed an encryption technique that enables stealthy transmission of any optical communications signal by spreading it below the “noise” level (the level of electromagnetic interference) in both time and frequency domains (spectrums).

Be the first to know - Join our Facebook page.


As a result, a would-be eavesdropper who tries to intercept the transmitted signal only detects noise, because the signal is hidden below the noise level. This means that only authorized users who know the authorized pattern can detect and decipher the signal (“spreading key”).

Prof. Dan Sadot of BGU’s department of electrical and computer engineering, working with Prof. Zeev Zalevsky, head of the electrooptics study program at Bar-Ilan’s engineering faculty with doctoral student Tomer Yeminy, developed the novel concept for stealthy fiber optical communications.

The researchers have prepared a simulation that could be used to build a prototype, and the method is in the midst of being patented.

“It is analogous to many soft sounds of a lovely symphony scattered through a recording of background noise,” the researchers said. “The authorized user who knows the ‘spreading key’ is the only one able to detect and enjoy the symphony without the noisy background. It should be noted that analysis shows that it will take about [10 to the 24th power – a septillion, or 1,000,000,000,000,000,000,00 0,000] years for an eavesdropper to break the encryption key, which means that eavesdropping is very hard. This method could also be useful in improving the immunity of the fiber optic communications system to jamming,” say the researchers.

“Continuing the above analogy, it is equivalent to talking at the same time as a person speaking loudly. Concealment depends on how loudly the other person talks and, moreover, the quality of both conversations will degrade,” they argue.

JPOST VIDEOS THAT MIGHT INTEREST YOU:

Join Jerusalem Post Premium Plus now for just $5 and upgrade your experience with an ads-free website and exclusive content. Click here>>

Related Content

Lab
August 31, 2014
Weizmann scientists bring nature back to artificially selected lab mice

By JUDY SIEGEL-ITZKOVICH