Comments on: (How) did they break Diffie-Hellman?

By: Wakhid Edy

Wakhid Edy — Sat, 19 May 2018 07:49:33 +0000

it’s quite hard to fully understand this article, but I’m glad found this one.

By: Op-ed: (How) did they break Diffie-Hellman? | Ad Jet

Op-ed: (How) did they break Diffie-Hellman? | Ad Jet — Sun, 20 Dec 2015 19:21:43 +0000

[…] Martijn Grooten is a mathematician-turned-security professional. He is currently Editor of Virus Bulletin and does the occasional security research on the side in which, wherever possible, he likes to use his mathematical background. This post originally appeared on Martijn’s Lapsed Ordinary blog. […]

By: Martijn

Martijn — Fri, 20 Nov 2015 09:39:37 +0000

Thanks for the kind words!
I know it’s g^a mod p, but frankly, I didn’t expect readers to understand the meaning of g^a – which isn’t particularly relevant for the article anyway. 🙂

By: Johannes Weber

Johannes Weber — Thu, 19 Nov 2015 11:37:56 +0000

Great article. Really nice to read. Thanks for that!
But I have two notes 😉
– It is better to call DH a “key agreement” protocol than to call it “key exchange”, which it is not, as you noted correctly.
– You should note that DH only works because of the discrete log problem. Furthermore, please note that every math operation is done with mod! It’s not simply “g^a” but it’s “g^a mod p”. (Though I know that this will confuse some people, others might be irritated by the fact that they could simply use the logarithm to solve g^a, which is not true, because it’s the *discrete* logarithm.)
Ciao, Johannes

By: Encryption: how Logjam can defeat secure connections | The Eclectic Light Company

Mon, 16 Nov 2015 07:30:08 +0000

[…] can find an excellent and detailed explanation of this issue on Martijn Grooten’s Lapsed Ordinary blog. This account is so clear that it has been published in Ars […]

By: Op-ed: (How) did they break Diffie-Hellman? | World Updates

Op-ed: (How) did they break Diffie-Hellman? | World Updates — Mon, 16 Nov 2015 05:48:00 +0000

By: Op-ed: (How) did they break Diffie-Hellman? » Apssites

Op-ed: (How) did they break Diffie-Hellman? » Apssites — Sun, 15 Nov 2015 13:25:52 +0000

By: Op-ed: (How) did they break Diffie-Hellman? - Apple Mac Training UK

Op-ed: (How) did they break Diffie-Hellman? - Apple Mac Training UK — Sun, 15 Nov 2015 12:07:58 +0000

[…] conference (left to right): Whitfield Diffie, Martin Hellman, Brian Snow. Flickr user: Dan Farber Martijn Grooten is a mathematician-turned-security professional. He is currently Editor of Virus Bulletin and does […]

By: Op-ed: (How) did they break Diffie-Hellman? - RYC HOME

Op-ed: (How) did they break Diffie-Hellman? - RYC HOME — Sun, 15 Nov 2015 01:13:55 +0000

By: Op-ed: (How) did they break Diffie-Hellman? | Ars Technica

Op-ed: (How) did they break Diffie-Hellman? | Ars Technica — Sat, 14 Nov 2015 20:31:05 +0000

[…] conference (left to right): Whitfield Diffie, Martin Hellman, Brian Snow.Flickr user: Dan Farber Martijn Grooten is a mathematician-turned-security professional. He is currently Editor of Virus Bulletin and does […]