phc-discussions - Re: [PHC] A review per day

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Message-ID: <5405DA70.6000500@ciphershed.org>
Date: Tue, 02 Sep 2014 10:55:44 -0400
From: Bill Cox <waywardgeek@...hershed.org>
To: discussions@...sword-hashing.net
Subject: Re: [PHC] A review per day - Schvrch

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On 09/02/2014 09:27 AM, Krisztián Pintér wrote:
> On Tue, Sep 2, 2014 at 3:20 PM, Bill Cox
> <waywardgeek@...hershed.org> wrote:
>> I am doing a *lot* of attacking PHC candidates right now, I
>> personally would appreciate input checking, so I don't waste time
>> showing that an entry is weak against invalid inputs.
> 
> that is why i have asserts. they mainly serve documentation
> purposes. however, it was not a requirement to provide self
> documenting implementation. the submitted documentation should
> serve as a reference. of course, self documenting code is nice to
> have.
> 

I saw that in your code and I appreciate it.  My Gambit review will be
easy because I considered my potential attacks last spring when I
reviewed your code and tested my pebbler against it.  I can do a up to
almost an 8-to-1 TMTO against it, IIRC, but then there seems to be a
solid wall against my pebbler.  You and I have different views about
the importance of an efficient hash function, but plug in Lyra2's
sponge into Gambit and my concerns over cache-bound efficiency mostly
go away.  I'll just re-list my notes from back then.  Gambit was one
of the easier entries for me to work with.

Bill
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