The Basics – Public Key Crypto … Diffie-Hellman Style

Head Shot of Wite DiffieI’ve always been a big fan of understanding the basics of infosec to help your career in the long run. Fitting that this past weekend I came across a great little 5 minute video explaining how public key cryptography works in terms of the Diffie-Hellman Key Exchange. Thanks to @rgaucher for retweeting this awesome piece.

(Note: As part of a campaign to bring forward some of our older posts that we feel still benefit the community, we’ve added this article to our Best Of category that will periodically get tweeted out. Please mention it to me on Twitter or contact us if there are any other posts you feel we should include in this category. This post was previously categorized under Career Development. [email protected]grecs)

It starts out with a simple paint-mixing analogy and then heads into the heart of the matter explaining it in mathematical terms with moduluses, logarithms, and all that. Enjoy!

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At the end of the video they also mention a forthcoming RSA version. I’d watch out for that as well. See ya! This post’s image is from Quora.com.

21 comments for “The Basics – Public Key Crypto … Diffie-Hellman Style

  1. March 8, 2012 at 11:05 am

    BLOGGED: The Basics: Public Key Crypto … Diffie-Hellman Style http://t.co/BxqhX2Px

  2. Simon
    March 8, 2012 at 11:24 am

    Great video. Shame he keeps referring to mod 42, when it’s mod 46 in the example…

  3. March 8, 2012 at 11:42 am

    #NoVABlogger The Basics: Public Key Crypto … Diffie-Hellman Style http://t.co/FMtcf9pX

  4. March 8, 2012 at 1:10 pm

    The Basics: Public Key Crypto … Diffie-Hellman Style: [nova#infosecportal.com] I’ve always been a big fan of… http://t.co/8eY9OETI

  5. March 8, 2012 at 2:16 pm

    Loved this vid explaining public key crypto.. http://t.co/Je9cRsrk

  6. March 8, 2012 at 2:24 pm

    The Basics: Public Key Crypto … Diffie-Hellman Style http://t.co/5MhiiWfg

  7. March 8, 2012 at 3:35 pm

    RT @grecs: Loved this vid explaining public key crypto.. http://t.co/BxqhX2Px

  8. March 8, 2012 at 6:00 pm

    In Case You Missed It: The Basics: Public Key Crypto … Diffie-Hellman Style http://t.co/Q2ZtDtP7

  9. March 9, 2012 at 6:58 am

    @rjmacfarlane nice wee video explaining diffie-hellman with paint http://t.co/wQpvRP5F

  10. March 12, 2012 at 7:55 am

    RT @CoverosGene: The Basics: Public Key Crypto … Diffie-Hellman Style http://t.co/awxeaA6c

  11. May 19, 2012 at 1:58 am

    Best Of: The Basics: Public Key Crypto … Diffie-Hellman Style http://t.co/MqrGALqw

  12. June 16, 2012 at 8:00 pm

    Best Of: The Basics: Public Key Crypto … Diffie-Hellman Style http://t.co/Je98jSia

  13. July 5, 2012 at 11:27 am

    Best Of: The Basics: Public Key Crypto … Diffie-Hellman Style http://t.co/MqrC3bpC

  14. July 14, 2012 at 12:59 pm

    Best Of: The Basics – Public Key Crypto … Diffie-Hellman Style http://t.co/Je98jSia

  15. November 14, 2012 at 9:17 am

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  16. April 15, 2013 at 11:30 pm

    Best Of: The Basics – Public Key Crypto … Diffie-Hellman Style http://t.co/qNnQ7HEBar

  17. February 19, 2014 at 4:37 am

    Best Of: The Basics – Public Key Crypto … Diffie-Hellman Style http://t.co/rzwfnAg8qu

  18. February 27, 2014 at 10:45 am

    Best Of: The Basics – Public Key Crypto … Diffie-Hellman Style http://t.co/954qmfRExb

  19. March 22, 2014 at 8:55 am

    Fun read for a Sat. RT @novainfosec: Best Of: The Basics – Public Key Crypto … Diffie-Hellman Style http://t.co/Oz3tRKePxY

  20. November 28, 2014 at 8:08 am

    Best Of: The Basics – Public Key Crypto … Diffie-Hellman Style http://t.co/EbOHOie3jH

  21. December 6, 2014 at 4:51 pm

    The Basics – Public Key Crypto … Diffie-Hellman Style | NovaInfosec – http://t.co/TqLxqj7Fnm

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