Quantum key security hacked for first time

    Date21 May 2010
    CategoryCryptography
    5362
    Posted ByAnthony Pell
    An important weakness has been discovered in the technology of quantum key distribution (QKD), which is increasingly being used by military and government to secure sensitive communications. Researchers at the University of Toronto have successfully attacked a QKD system from Swiss company, id Quantique, the first time an attack on a commercial system using the technology has been demonstrated.

    The highly-theoretical attack was based on disproving assumptions about the levels of errors which can be taken by either the sender (Alice) or receiver (Bob) to be indicative that the key data has been compromised by a third party (Eve).

    The security principle of QKD is the impossibility of a simple intercept-and-resend attack being hidden from sender or receiving parties, normally taken to a quantum bit error rate (QBER) of 20 percent or greater becoming apparent in the signal, a figure that takes account of a degree of 'noise'.

    You are not authorised to post comments.

    LinuxSecurity Poll

    Do you reuse passwords across multiple accounts?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 2 answer(s).
    /component/communitypolls/?task=poll.vote
    13
    radio
    [{"id":"55","title":"Yes","votes":"5","type":"x","order":"1","pct":45.45,"resources":[]},{"id":"56","title":"No","votes":"6","type":"x","order":"2","pct":54.55,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    Advisories

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.