Generating keys
===============

There are example ``public-keys`` and ``private-keys`` repos in ``morph/grid/local/``.
``<grid>/config.json`` has the paths for the key files for the respective grid.
Create a symlink ``private-keys`` to your secret key repositories for the deployment you are working on.
Create a directory named ``public-keys`` containing the corresponding public keys for the deployment.


Stripe
``````

For the Stripe key any random bytes with a little light formatting "work" - at least to make our software happy - but if you want to be able to interact with Stripe and have payments (even pretend payments) move all the way through the system you should get a Stripe account and generate a key w/ them.
Lauri can get you added to our "dev" Stripe account, too, though I forget how important that is for ad hoc dev/testing.

I think this will work for generating random Stripe secret keys (that our software will load, I think, but Stripe will reject)::

  >>> import base64, os
  >>> print((b"sk_test_" + base64.b64encode(os.urandom(25)).strip(b"=")).decode("ascii"))
  sk_test_Dr+XLVjkC0oO3Zw8Ws0yWtDLqR1sM+/fmw

Public keys are the same but "pk_test" instead of "sk_test" ("test" is for "test mode" key that can only process pretend txns; for real txns there are keys with "live" embedded).


ZKAP-Issuer Ristretto
`````````````````````

Here is a Ristretto key you can use, randomly generated just now::

  SILOWzbnkBjxC1hGde9d5Q3Ir/4yLosCLEnEQGAxEQE=

Generate your own like this::

  [flo@la:~/PrivateStorageio]$ nix-shell
  [nix-shell:~/PrivateStorageio]$ nix-shell -p zkapissuer.components.exes.PaymentServer-generate-key
  [nix-shell:~/PrivateStorageio]$ PaymentServer-generate-key
  SILOWzbnkBjxC1hGde9d5Q3Ir/4yLosCLEnEQGAxEQE=

Make sure you write it into the key file `without any leading or trailing white space, also without newlines <https://github.com/LeastAuthority/python-challenge-bypass-ristretto/issues/37>`_.
For example::

  echo -n "SILOWzbnkBjxC1hGde9d5Q3Ir/4yLosCLEnEQGAxEQE=" > ristretto.signing-key


ZKAP-Issuer TLS
```````````````

The ZKAPIssuer.service needs a working TLS certificate and expects it in the certbot directory for the domain you configured, in my case::

  openssl req -x509 -newkey rsa:4096 -nodes -keyout privkey.pem -out cert.pem -days 3650
  touch chain.pem

Move the three .pem files into the payment's server ``/var/lib/letsencrypt/live/payments.localdev/`` directory and issue a ``sudo systemctl restart zkapissuer.service``.


Monitoring VPN
``````````````

Create all of the Wireguard VPN keys for a grid::

  ./tools/create-vpn-keys.sh morph/grid/testing/grid.nix