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Re: [openpgp] [PATCH] RFC4880bis: Argon2i

Werner Koch <wk@gnupg.org> Wed, 04 November 2015 08:11 UTC

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From: Werner Koch <wk@gnupg.org>
To: Peter Gutmann <pgut001@cs.auckland.ac.nz>
References: <5623AA95.4060903@googlemail.com> <874mh3q3ol.fsf@alice.fifthhorseman.net> <56382F70.5000501@iang.org> <56385A38.6000707@googlemail.com> <9A043F3CF02CD34C8E74AC1594475C73F4B51C09@uxcn10-5.UoA.auckland.ac.nz> <563924D5.6020407@googlemail.com> <9A043F3CF02CD34C8E74AC1594475C73F4B52B3E@uxcn10-5.UoA.auckland.ac.nz>
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Date: Wed, 04 Nov 2015 09:09:17 +0100
In-Reply-To: <9A043F3CF02CD34C8E74AC1594475C73F4B52B3E@uxcn10-5.UoA.auckland.ac.nz> (Peter Gutmann's message of "Wed, 4 Nov 2015 00:33:51 +0000")
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Cc: Nils Durner <ndurner@googlemail.com>, "openpgp@ietf.org" <openpgp@ietf.org>
Subject: Re: [openpgp] [PATCH] RFC4880bis: Argon2i
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On Wed,  4 Nov 2015 01:33, pgut001@cs.auckland.ac.nz said:

> So perhaps have type 4 = Argon2, type 5 = symmetric key transport, with a
> safety note added to say that it's meant for randomly-generated symmetric keys
> that are already, in effect, in the post-S2K state.

That would be fine for new code.  Nevertheless implementations need to
support reading type 1 until all backup media as worn out.  Thus I doubt
that requiring an extra code path is the way to go.


Shalom-Salam,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.

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