backend.py 文件源码

def _load_from_string(cls, certificate):
        """
        Load a certificate from a string.

        Args:
            certificate (str): A base64 PEM encoded certificate
        """
        certificate = certificate.encode()
        try:
            cert_obj = load_pem_x509_certificate(certificate, backend)
            cls._public_keys.append(cert_obj.public_key())
            cls._key_age = datetime.now()
        except ValueError:
            raise ImproperlyConfigured("Invalid ADFS token signing certificate")