This module implements support for a Encrypted Push Notifications, a custom extension to XEP-0357: Push Notifications.
It is planned that this will evolve to a XEP in the near future.
Add to modules_enabled, there are no configuration options.
Depends on luaossl
which is available in Debian as
luarocks install luaossl.
Not tested, but hopefully works on 0.11.x and later.
With the plugin installer in Prosody 0.12 you can use:
sudo prosodyctl install --server=https://modules.prosody.im/rocks/ mod_cloud_notify_encrypted
For earlier versions see the documentation for installing 3rd party modules