[Cryptech Tech] Requirements for signing the Tor consensus

[Joachim Strömbergson]

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Aloha!

Linus Nordberg wrote:
> 1. Tor directory authorities don't use Ed25519 yet. No such proposal 
> exists.
> 
> 2. Tor relays don't use Ed25519 yet. Proposal 220 [0] describes how
> they might do that in the future. I know there's a rewrite of that
> proposal sitting somewhere not published yet, so don't make decisions
> based on it.
> 
> 3. Tor relays do use Curve25519 for the "ntor" handshake since 
> 0.2.4.8-alpha (2013-01-14). See [tor-spec] section 5.1.4. for 
> details. This application requires high performance.
> 
> [0]
> https://gitweb.torproject.org/torspec.git/blob/HEAD:/proposals/220-ecc-id-keys.txt
>
> 
[tor-spec] https://gitweb.torproject.org/torspec.git/blob/HEAD:/tor-spec.txt

So Ed25519 is not relevant at the moment as a use case? But SHA-512
would be useful?

Do you have any numbers on the performance requirements for the
operations. At least magnitude.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
========================================================================
 Joachim Strömbergson          Secworks AB          joachim at secworks.se
========================================================================
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