def b64_encode(self):
encoded = _lib.NETSCAPE_SPKI_b64_encode(self._spki)<EOL>result = _ffi.string(encoded)<EOL>_lib.OPENSSL_free(encoded)<EOL>return result<EOL>
Generate a base64 encoded representation of this SPKI object.

:return: The base64 encoded string.
:rtype: :py:class:`bytes`