# File lib/mcollective/security/aes_security.rb, line 335
      def client_private_key
        return ENV["MCOLLECTIVE_AES_PRIVATE"] if ENV.include?("MCOLLECTIVE_AES_PRIVATE")

        raise("No plugin.aes.client_private configuration option specified") unless @config.pluginconf.include?("aes.client_private")

        return @config.pluginconf["aes.client_private"]
      end