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Re: [Cfrg] Elliptic Curves - signature scheme: randomised or not (ends on May 13th)

"Parkinson, Sean" <sean.parkinson@rsa.com> Mon, 04 May 2015 22:51 UTC

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From: "Parkinson, Sean" <sean.parkinson@rsa.com>
To: Alexey Melnikov <alexey.melnikov@isode.com>
Date: Mon, 04 May 2015 18:51:10 -0400
Thread-Topic: [Cfrg] Elliptic Curves - signature scheme: randomised or not (ends on May 13th)
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Subject: Re: [Cfrg] Elliptic Curves - signature scheme: randomised or not (ends on May 13th)
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+1

Sean :-)
--
Sean Parkinson | Consultant Software Engineer | RSA, The Security Division of EMC
Office +61 7 3032 5232 | Fax +61 7 3032 5299
www.rsa.com


-----Original Message-----
From: Cfrg [mailto:cfrg-bounces@irtf.org] On Behalf Of Adam Langley
Sent: Tuesday, 5 May 2015 2:29 AM
To: Alexey Melnikov
Cc: cfrg@irtf.org
Subject: Re: [Cfrg] Elliptic Curves - signature scheme: randomised or not (ends on May 13th)

On Sun, May 3, 2015 at 4:14 AM, Alexey Melnikov <alexey.melnikov@isode.com> wrote:
> 1. CFRG should stick to randomised signature schemes only.
>
> 2. CFRG should adopt deterministic signature scheme only.
>
> 3. De-randomisation should be an optional feature for implementers to 
> decide upon (i.e. both choices 1 and 2 allowed).

I would favour a deterministic signature scheme for robustness reasons. I'm sure that, should certain applications wish to have precomputed signatures, then an RFC won't stop them, but it will guide most people towards the solution that is generally the best choice.


Cheers

AGL

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Adam Langley agl@imperialviolet.org https://www.imperialviolet.org

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