Researchers set new cryptanalysis world record for pairing-based cryptography

923-bit encryption key was cracked in 148 days, researchers from Japan say

Researchers from Fujitsu Laboratories, Japan's National Institute of Information and Communications Technology (NICT) and Kyushu University have set a new cryptanalysis world record by cracking a 278-digit-long (923-bit) key used in a pairing-based cryptography system, Japanese IT services provider Fujitsu said Monday.

The cryptanalysts who worked on this project cracked the 923-bit encryption key in 148.2 days by using 21 computers with a total of 252 cores. It had been previously estimated that pairing-based cryptography of this length would require several hundred thousand years to break, the researchers said.

The previous record dated from 2009 when researchers from NICT and Japan's Hakodate Future University cracked a 204-digit-long (676-bits) key. Cracking a 923-bit key was hundreds of times more difficult.

The researchers explained that they overcame this problem by using several new technologies, including optimization techniques, a new two-dimensional search algorithm and parallel programming.

Pairing-based cryptography (PBC) can be used for identity-based encryption, keyword searchable encryption and other applications for which traditional public key cryptography is unsuitable.

PBC has been very attractive for cryptographers since 2000, when it was used to develop a one-round three-party key agreement protocol as an alternative to the two-round three-party Diffie-Hellman key exchange. However, being a novelty in the cryptographic world, its security has not been thoroughly studied.

The researchers hope that their cryptanalysis effort will help standardizing organizations and governments determine what role PBC will play in developing the next-generation cryptography standards and what is the appropriate key length to use with this type of encryption going forward.

Join the newsletter!

Or
Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Lucian Constantin

IDG News Service
Show Comments

Essentials

James Cook University - Master of Data Science Online Course

Learn more >

Mobile

Sansai 6-Outlet Power Board + 4-Port USB Charging Station

Learn more >

Exec

Budget

Back To Business Guide

Click for more ›

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?