[noise] NoiseSocket and payload padding in handshake messages

[Trevor Perrin]

On Tue, Apr 17, 2018 at 4:14 PM, Alexey Ermishkin <scratch.net at gmail.com> wrote:
> Hello everyone,
> This is when padding was dropped from the handshake
> https://moderncrypto.org/mail-archive/noise/2017/000931.html

Ah, I missed that, sorry.

Let's take a moment to think about this and make sure we know what
decision we're making, and why we're making it.

On the one hand, I'm not sure why padding would be less-useful for
handshake ciphertext than transport ciphertexts.  On the other hand,
maybe the structure of Noise libraries and the fact that handshake
payloads are sometimes encrypted and sometimes not, makes this an
awkward thing to support?

Trevor