multibackend.py 文件源码

def generate_rsa_parameters_supported(self, public_exponent, key_size):
        for b in self._filtered_backends(RSABackend):
            return b.generate_rsa_parameters_supported(
                public_exponent, key_size
            )
        raise UnsupportedAlgorithm("RSA is not supported by the backend.",
                                   _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM)