code: def active_cert(key):
      
      try:
          cert_str = pem_format(key)
          cert = crypto.load_certificate(crypto.FILETYPE_PEM, cert_str)
          assert cert.has_expired() == 0
          assert not OpenSSLWrapper().certificate_not_valid_yet(cert)
          return True
      except AssertionError:
          return False
      except AttributeError:
          return False
docs: Verifies that a key is active that is present time is after not_before
      and before not_after.
  
      :param key: The Key
      :return: True if the key is active else False