phc-discussions - Re: [PHC] Competition process

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Message-ID: <CA+hr98G1k3XhsR8GB7tMOgOSQE8nJCXqKg3COt7P-qyP0ciqxw@mail.gmail.com>
Date: Tue, 14 Apr 2015 16:35:12 +0200
From: Krisztián Pintér <pinterkr@...il.com>
To: "discussions@...sword-hashing.net" <discussions@...sword-hashing.net>
Subject: Re: [PHC] Competition process

On Tue, Apr 14, 2015 at 4:19 PM, Solar Designer <solar@...nwall.com> wrote:
> yescrypt is being criticized primarily for being overly(?) complex,

and this is a valid criticism. simplicity is not just convenience in
crypto. it is about implementation correctness, verifiability, ability
to reason about the algorithm itself in terms of math.

> Makwa's delegation is probably not something that could reasonably be
> added

you really need to design a primitive from the ground up with
delegation in mind. in fact i would be very pleased to see a
makwa-like number theoretic kdf that has high (and tunable) memory
requirement, and a blinding option. that would be the perfect
candidate in my opinion.