gnu-social/plugins/OAuth2/config.yaml

parameters:
  oauth2:
    private_key: '%kernel.project_dir%/file/oauth/private.key'
    private_key_password: null
    public_key: '%kernel.project_dir%/file/oauth/public.key'
    encryption_key: 'lxZFUEsBCJ2Yb14IF2ygAHI5N4+ZAUXXaSeeJm6+twsUmIen'