Storing master token in Chef data bag

I am generating a master token in Chef using the execute resource as below:

execute "extract_consul_key" do
  command "consul keygen "
end

I want to store output of this command in a databag.
Please let me know what steps do I need to setup an encrypted databag and then store output of the above execute resource into that databag.
I am new to databags and don't possess any knowledge on it.