phc-discussions - Re: [PHC] Quick gripe... in case there's ever another contest

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Message-ID: <CAOLP8p6MO1dnkGYxM30dXDVgcurSdZ+fkDX_reex4W4E+g5BDA@mail.gmail.com>
Date: Sat, 5 Apr 2014 20:35:36 -0400
From: Bill Cox <waywardgeek@...il.com>
To: discussions@...sword-hashing.net
Subject: Re: [PHC] Quick gripe... in case there's ever another contest

On Sat, Apr 5, 2014 at 6:47 PM, Solar Designer <solar@...nwall.com> wrote:
> This is not without merit, but which approach is best is unclear to me.
>
> As you pointed out, there may be language-related bugs in Java code too,
> and here's a relevant example:
>
> http://mindrot.org/files/jBCrypt/internat.adv
>
> Alexander

This probably just shows my age, but I agree more with Poul-Henning
Kamp in this case.  Password hashing may get implemented in PHP or
Javascript, but the main implementation will be in C/C++.

The thought that we could develop the next generation PHS in Java
gives me the heebie-jeebies (and I am a Java fan).  How exactly are we
supposed to take into account SSE/AVX2, or AESENC instructions in
Java?  Imagine an EARWORM implementation in Python, Javascript, or
PHP.  Ug...

You can't do a good job at this with pencil and paper.  You have to
roll up your sleeves, write some code, benchmark, and iterate.
Otherwise, you'll only have a nice academic paper to show for your
work.  A nice high level language implementation would be a bonus, but
I just can't see tuning a PHS without going bare metal.

Bill