code: def call_openssl(cmd, message, silent=False):
      
      if silent:
          with open(os.devnull, 'w') as devnull:
              return subprocess.check_call(cmd, shell=True, stdout=devnull,
                                           stderr=subprocess.STDOUT)
      else:
          print message
          return subprocess.check_call(cmd, shell=True)
docs: call openssl
      :param cmd: a string of command send to openssl
      :param message: a string to print out if not silent
      :param silent: a boolean for whether to suppress output from openssl