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

Markus Stenberg <> Mon, 26 November 2018 13:53 UTC

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From: Markus Stenberg <>
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Date: Mon, 26 Nov 2018 15:53:34 +0200
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To: Juliusz Chroboczek <>
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Subject: Re: [babel] HMAC and MTI [was: rather than ripemd160...]
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On 26 Nov 2018, at 15.46, Juliusz Chroboczek <> 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 ..