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Re: [Cfrg] Summary of the poll: Elliptic Curves - signature scheme: friendliness to low memory implementations (ends on June 3rd)

Nico Williams <nico@cryptonector.com> Wed, 10 June 2015 01:03 UTC

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Date: Tue, 09 Jun 2015 20:02:57 -0500
From: Nico Williams <nico@cryptonector.com>
To: Watson Ladd <watsonbladd@gmail.com>
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References: <C49BFA4F-76B9-48A1-913B-144D606FBBDD@isode.com> <5576F66F.8020902@isode.com> <CACsn0c=FWkGCWJ8LERVFAN-puD4GEeBF0Y7wm985iTSFvb+dSA@mail.gmail.com>
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Subject: Re: [Cfrg] Summary of the poll: Elliptic Curves - signature scheme: friendliness to low memory implementations (ends on June 3rd)
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On Tue, Jun 09, 2015 at 02:44:05PM -0700, Watson Ladd wrote:
> On Jun 9, 2015 7:21 AM, "Alexey Melnikov" <alexey.melnikov@isode.com> wrote:
> > [...]
> 
> Does this mean that option 3 has been taken, or option 1? Or will we permit
> both and decide based on what the schemes look like?

My take is that this is still to be decided (otherwise why not be clear
about it?).

I think it would be a terrible mistake to not have a deterministic and
collision-resistant signature scheme, but it would not be a terrible
mistake to *also* have a deterministic and not-CR (but online) signature
scheme.  One can argue that having the latter is an invitation to others
to make terrible mistakes, but it can't possibly be as bad as not having
*any* determnistic and CR signature scheme.

Nico
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