Re: [tor-relays] Tiny computers (RPi-like) for exit nodes?

[Michael McConville <mmcco@xxxxxxxxxxx>]

Yawning Angel wrote:
> Michael McConville <mmcco@xxxxxxxxxxx> wrote:
> > I forgot to mention all the crypto required, too. These boards don't
> > have crypto accelerators, so that's a big cost.
> 
> What?

I forgot to mention all the crypto required, too. These boards don't
have crypto accelerators, so that's a big cost.

> ARMv8-A has hardware accelerated SHA(1/2), AES, and a carry-less
> multiply.  As far as I am aware this still requires using OpenSSL
> 1.1.x (currently beta), and I don't remember off the top of my head if
> the code necessary to use newer OpenSSL was backported to pre 0.2.9.x.

Interesting, I didn't know that. However, because only very new boards
support ARMv8 and because stable OpenSSL releases don't yet support its
AES extension, it seems that crypto speed remains a problem for now.

Best,
Mike
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