ArrowArtboardCreated with Sketch.Title ChevronTitle ChevronIcon FacebookIcon LinkedinIcon Mail ContactPath LayerIcon MailPositive ArrowIcon PrintIcon Twitter
Technology

NTT taps light reflection for superfast encryption

TOKYO -- Nippon Telegraph and Telephone has found a way to use laser-light reflection in data encryption, a discovery that could help fight increasingly complex cyberattacks.

Random number sequences consisting of 0 and 1 are essential components of cryptographic systems. They are normally generated from mathematical formulas, but the weakness of this method is that the sequence becomes predictable if an attacker figures out the algorithm being used.

In contrast, methods utilizing irregular physical phenomena can achieve a higher level of unpredictability. NTT has developed a system that can generate random numbers based on the irregular and complex oscillation in the output light of a semiconductor laser whose output light is reflected by a mirror and injected back into the laser.

Generated at speeds of 4 gigabits per second, the random numbers could be supplied to computers and servers to encrypt data. The Japanese telecommunications company hopes to bring the technology to market within a few years.

Thermal noise measurement is among the technologies currently employing phenomenon-based methods. But its processing rate is around 100 megabits per second at best, and thus not suitable for high-speed transmissions of large amounts of data.

(Nikkei)

Sponsored Content

About Sponsored Content This content was commissioned by Nikkei's Global Business Bureau.

You have {{numberArticlesLeft}} free article{{numberArticlesLeft-plural}} left this monthThis is your last free article this month

Stay ahead with our exclusives on Asia;
the most dynamic market in the world.

Stay ahead with our exclusives on Asia

Get trusted insights from experts within Asia itself.

Get trusted insights from experts
within Asia itself.

Try 1 month for $0.99

You have {{numberArticlesLeft}} free article{{numberArticlesLeft-plural}} left this month

This is your last free article this month

Stay ahead with our exclusives on Asia; the most
dynamic market in the world
.

Get trusted insights from experts
within Asia itself.

Try 3 months for $9

Offer ends July 31st

Your trial period has expired

You need a subscription to...

  • Read all stories with unlimited access
  • Use our mobile and tablet apps
See all offers and subscribe

Your full access to Nikkei Asia has expired

You need a subscription to:

  • Read all stories with unlimited access
  • Use our mobile and tablet apps
See all offers
NAR on print phone, device, and tablet media

Nikkei Asian Review, now known as Nikkei Asia, will be the voice of the Asian Century.

Celebrate our next chapter
Free access for everyone - Sep. 30

Find out more