Re: [Cfrg] Dragonfly has advantages

Paul Lambert <paul@marvell.com> Mon, 06 January 2014 00:04 UTC

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From: Paul Lambert <paul@marvell.com>
To: Feng Hao <feng.hao@newcastle.ac.uk>
Date: Sun, 5 Jan 2014 16:04:36 -0800
Thread-Topic: [Cfrg] Dragonfly has advantages
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References: <CEED247E.2B845%paul@marvell.com> <CEEDD829.22CD6%feng.hao@newcastle.ac.uk>
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Subject: Re: [Cfrg] Dragonfly has advantages
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> -----Original Message-----
> From: Feng Hao [mailto:feng.hao@newcastle.ac.uk]
 

Hi Feng,

> >I agree that it has more complexity and message exchanges that other
> >approaches.  These other protocols have NOT been viable to ship in the
> >products I build.
> 
> Have you looked at J-PAKE? It's a balanced PAKE, same as Dragonfly.
No, not in too much detail, yet ... looks of similar complexity.

> 
> http://www.lightbluetouchpaper.org/2008/05/29/j-pake/	
Interesting, thanks for the reference.

I assume this is a related better spec for this forum: http://tools.ietf.org/search/draft-hao-jpake-00

Seems like the identical problem space as Dragonfly, but a later attempt. Less critical review so far ... 

Note - a nearly identical version of Dragonfly	 is baked into mesh networking ... so I still want to see Dragonfly progress to ensure the side-channel implementation details and the like are clarified to fully address the comments. 

Regards,

Paul

> 
> In the update of "2013-12-30", you can find a prototype implementation
> of J-PAKE using the elliptic curve group setting.
> 
> Cheers,
> Feng