[noise] Noise test vector format

[Trevor Perrin]

On Fri, Nov 13, 2015 at 2:31 PM, Alex <alex at centromere.net> wrote:
>>
>
> If you didn't use the gen_* keys above I suspect that might be the
> problem.

I used them and calculated the same public keys, but the payload
ciphertext was still different.

You can see the commented-out test below, if you uncomment and run
"cargo test -- --nocapture" you can see the failure (we can debug more
offlist, too):

https://github.com/trevp/screech/blob/master/tests/lib.rs

Trevor