Ben Cantrick (mackys) wrote,
Ben Cantrick

Time to abandon 1024 bit encryption keys...

On March 6, computer clusters from three institutions – the EPFL, the University of Bonn and NTT in Japan - reached the end of eleven months of strenuous calculation, churning out the prime factors of a well-known, hard-to-factor number that is a whopping 307 digits long. "This is the largest ‘special' hard-to-factor number factored to date," explains EPFL cryptology professor Arjen Lenstra. The number has a special mathematical form 2^1039-1.

It's rumored that the NSA's minimum unit of supercomputer purchase is an acre. That's right, they don't even bother buying less than an acre of new supercomputers at a time. And they have surely learned the lessons from Cracking DES - how a simple ASIC chip can check 60 million DES keys per second. And how you can easily parallel these chips up - by the thousand. So, 1024 bit asymmetric keys are dead. Long live 2048 bit. (Yeah right. I predict those will be too weak in 10 years or less.)
Tags: slashdot
  • Post a new comment


    default userpic

    Your reply will be screened

    Your IP address will be recorded 

    When you submit the form an invisible reCAPTCHA check will be performed.
    You must follow the Privacy Policy and Google Terms of use.