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Re: [Lwip] New Version Notification for draft-ietf-lwig-curve-representations-23.txt

Rene Struik <rstruik.ext@gmail.com> Tue, 25 January 2022 15:29 UTC

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Date: Tue, 25 Jan 2022 10:29:03 -0500
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To: sarikaya@ieee.org
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References: <164280578662.16592.16625041318608542476@ietfa.amsl.com> <204cbd49-e74f-a11b-2e81-3328cd16488b@gmail.com> <43C9A44C-C8C8-4C65-B407-FD223563F32B@tzi.org> <40df324e-1c90-5b39-8a78-6d6f55d8bbe4@gmail.com> <CAC8QAcdy0WzEGNxp+NrLT0xnsKANAoKLAJjEgJayBTh7OQf=Tg@mail.gmail.com>
From: Rene Struik <rstruik.ext@gmail.com>
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Subject: Re: [Lwip] New Version Notification for draft-ietf-lwig-curve-representations-23.txt
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Hi Behcet:

I think it carries a little bit too far to try and discuss algorithm 
agility considerations on this list (here, with SHA-2 hash function 
family vs. SHA-3). Please see [1] and info on the so-called SHA3 hash 
function contest (which ran from ~2009 to 2013) one can find online and 
in [1] itself.

I hope this helps you navigate this.

Rene

Ref: [1] FIPS Pub 202 - SHA-3 Standard - Permutation-Based Hash and 
Extendable Output Functions (August 6, 2015). See 
https://csrc.nist.gov/publications/detail/fips/202/final

On 2022-01-25 10:22 a.m., Behcet Sarikaya wrote:
> Hi Rene,
>
> What is sha3?
>
> What happened to sha2? Is sha2 out now?
>
> Why do we need a new sha every now and then?
>
> Behcet
>
> On Tue, Jan 25, 2022 at 8:30 AM Rene Struik <rstruik.ext@gmail.com> wrote:
>
>     Hi Carsten:
>
>     Thanks for the support.
>
>     One can download my Sage code, some conversion functions, and
>     examples via the link below. The conversion functions follow
>     Appendix I of the lwig curve draft.
>
>     Please contact me *offline* if you wish to discuss.
>
>     Rene
>
>     https://cocalc.com/6ba84e72-ce88-42f7-8c90-21e04e3fe757/raw/ietf/fips202material/fips202spec+conversion+examples.zip
>
>
>     On 2022-01-22 2:12 a.m., Carsten Bormann wrote:
>>     Hi Rene,
>>
>>     thank you for doing this work.
>>
>>     One question comes to mind:
>>
>>>     On 22. Jan 2022, at 00:32, Rene Struik<rstruik.ext@gmail.com>  <mailto:rstruik.ext@gmail.com>  wrote:
>>>
>>>     I implemented all SHA3 functions from scratch on the bit-level and had this vetted independently via contacts at NIST.
>>     Is this implementation available?
>>     Has it been upstreamed to Sage?
>>
>>     Grüße, Carsten
>>
>
>     -- 
>     email:rstruik.ext@gmail.com  | Skype: rstruik
>     cell: +1 (647) 867-5658 | US: +1 (415) 287-3867
>
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-- 
email:rstruik.ext@gmail.com  | Skype: rstruik
cell: +1 (647) 867-5658 | US: +1 (415) 287-3867

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