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Date: Wed, 11 Feb 2015 18:42:45 -0800
From: Tony Arcieri <>
To: "" <>
Subject: Re: [PHC] PHC status report

On Wed, Feb 11, 2015 at 6:35 PM, Samuel Neves <> wrote:

> That is indeed how the later stage SHA-3 reports are done. However, I went
> back and looked at the SHA-3 Round 1 report
> [1], which would be the rough analogous to the phase we are in right now.
> There is no comment on the 37 rejected
> candidates beyond some initial generalities about criteria (which, as you
> pointed out, were mainly security and
> performance). I am quite confident each of these rejections are fully
> justified, but the report is definitely not where
> one will find them.

I'm sure NIST tried quite hard with the SHA-3 competition, but the reality
(at least IMNSHO) is the entire process was a debacle that resulted in a
highly contested, poorly-received candidate which was selected before the
PHC started... *and yet* still has not been fully standardized by NIST.

The result of the process was probably the first time in history that we
may see non-NIST hash functions receiving widespread organic adoption
because the SHA-3 competition was so poorly executed and the selected hash
function is simply not what the wider community is interested in using.

I'm sure there's hard won knowledge from the SHA-3 process that we can
incorporate to PHC, but at the same time I look at SHA-3 as a sort of
antipattern for how to run a crypto competition.

I think the PHC can do better (and is doing better).

Tony Arcieri

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