Re: [babel] HMAC and MTI [was: rather than ripemd160...]

Toke Høiland-Jørgensen <toke@toke.dk> Mon, 26 November 2018 13:59 UTC

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To: Markus Stenberg <markus.stenberg@iki.fi>, Juliusz Chroboczek <jch@irif.fr>
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Date: Mon, 26 Nov 2018 14:59:20 +0100
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Subject: Re: [babel] HMAC and MTI [was: rather than ripemd160...]
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Markus Stenberg <markus.stenberg@iki.fi> writes:

> On 26 Nov 2018, at 15.46, Juliusz Chroboczek <jch@irif.fr> wrote:
>>> I'm not sure if we *can* make [blake2s] MTI in the spec as well (does it
>>> need to be defined by a standards track RFC for us to do that?), but if
>>> we can, I think we should seriously consider it...
>> Opinions?
>
> I like Blake (family of) hash functions so on that front +1; however,
> no idea how bureaucracy works.
>
> Dave had a good point as well though, comparing -2s and -2b
> performance on some set of hardware (e.g. arm, mips, intel) might be
> in order before picking between the two. I am not convinced -2s is the
> way _forward_. Even now most of hardware in my home is already 64bit
> ..

Right, sure. I guess I can start by putting both into Bird, and we can
benchmark that...

-Toke