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Date: Mon, 23 Mar 2015 17:00:04 +0100
From: Jakob Wenzel <jakob.wenzel@...-weimar.de>
To: discussions@...sword-hashing.net
Subject: Re: [PHC] PHC: survey and benchmarks

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On 23.03.2015 16:45, Bill Cox wrote:
> Hopefully they will take some feedback for corrections.  They 
> mistakenly call Yescrypt non-RAM hard and lump it with Makwa.
> They did not test it with significant men size either...
> 

> On Mar 23, 2015 7:08 AM, "Jean-Philippe Aumasson" 
> <jeanphilippe.aumasson@...il.com 
> <mailto:jeanphilippe.aumasson@...il.com>> wrote:
> 
> This just appeared: http://eprint.iacr.org/2015/265
> 

Hi all,

thanks to the authors for the benchmarking paper. Nevertheless, we do
not agree with the results for Catena since the authors in the paper
did not consider the current version of Catena (Catena v3.1) which can
be found here:

http://www.uni-weimar.de/fileadmin/user/fak/medien/professuren/Mediensicherheit/Research/Publications/catena-v3.1.pdf

They refer to the version from December 2014 which does not contain
the latest tweaks such as:
 - reduced-round version of blake
 - additional random layer
 - changed initialization phase
 - removed SHA-512 from the parameter recommendations for the underlying
   hash function
 - ...

They also ignored the instance Catena-DBG, which was already mentioned
in the ePrint version. Before this paper will be used in the decision
process for the winner of the PHC, we would kindly asked the authors
to analyze the latest version of Catena (Catena v3.1).

Best regards,
Jakob
(on behalf of the Catena design team)

- -- 
Jakob Wenzel
Research Assistant
Chair of Media Security (Prof. Lucks)
Bauhausstra├če 11 (Room 217)
99423 Weimar
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