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Re: [tor-relays] Sharing experience with Via Nano 1.6ghz with Padlock hw accel
On 6/5/16 9:40 PM, Yawning Angel wrote:
> The important one is AES-128-CTR. Since you're using OpenSSL master,
> it should be accelerated. Versions prior to the 1.1 series do not.
>
> Quickly skimming engines/e_padlock.c, it appears that GCM accel isn't
> supported, but I don't feel like looking at if that means "just a slow
> GHASH" or "slow everything".
I see that on GnuTLS they are optimizing GCM using the ECB part of Padlock:
https://github.com/GostCrypt/GnuTLS/blob/master/lib/accelerated/x86/aes-gcm-padlock.c
Wondering if that can't be a choice also for OpenSSL/Tor to offload
crypto a bit more?
Fabio
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