Quantum computers pose a huge threat to security, and the NIST wants your help

Discussion in 'privacy technology' started by Minimalist, May 4, 2016.

  1. Minimalist

    Minimalist Registered Member

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    http://www.pcworld.com/article/3065...to-security-and-the-nist-wants-your-help.html
     
  2. amarildojr

    amarildojr Registered Member

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    "A huge threat".

    Only to bad and mediocre encryption implementations ;) If the encryption is well done, it can take trillions of centuries to crack it. And with a quantum computer it would take half that, because they only reduce the time by half.

    Even if the encryption if "not so good", e.g. with a passprhase that "only" takes 1 thousand years to crack, it would still take 500 years to crack it.

    Personally I'm not worried at all about quantum computers.
     
  3. lotuseclat79

    lotuseclat79 Registered Member

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  4. blainefry

    blainefry Registered Member

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    That's only true for symmetric algorithms. Public key stuff (which makes up most of the Internet), is vulnerable to quantum computing.
     
  5. amarildojr

    amarildojr Registered Member

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    Could you elaborate? :)
     
  6. hawki

    hawki Registered Member

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    Hope this helps :)

    http://community.digitalmediaacademy.org/wp-content/uploads/2009/04/Asymmetry-Comparission.png

    This might be more helpful:

    "A problem with asymmetric encryption, however, is that it is slower than symmetric encryption. It requires far more processing power to both encrypt and decrypt the content of the message."

    https://support.microsoft.com/en-us/kb/246071

    "Key sizes are not comparable between the two approaches. A
    128-bit symmetric key may be equivalent in strength to a 3000 -bit
    public key.

    https://www.cs.utexas.edu/users/byoung/cs361/lecture44.pdf
     
    Last edited: Jun 4, 2016
  7. amarildojr

    amarildojr Registered Member

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  8. CoolWebSearch

    CoolWebSearch Registered Member

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    There is no doubt anymore; quantum computers and Arnold Schwarznegger will destroy the world.
     
  9. lotuseclat79

    lotuseclat79 Registered Member

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    Google has come up with a new quantum computing technique that could remove key limits on scalability today.

    -- Tom
     
  10. lotuseclat79

    lotuseclat79 Registered Member

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  11. lotuseclat79

    lotuseclat79 Registered Member

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  12. Minimalist

    Minimalist Registered Member

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    Quantum Computation: A cryptography armageddon?
    http://www.welivesecurity.com/2016/06/14/quantum-computation-cryptography-armageddon/
     
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