NNTPCryptography.py 文件源码

def decode_public_key(self, encoded):
        """
        Based on spotnab, this is the gzipped version of the key
        with base64 applied to it.  We decode it and load it.

        """
        fileobj = StringIO()
        try:
            fileobj.write(b64decode(encoded))
        except TypeError:
            return False

        fileobj.seek(0L, SEEK_SET)
        self.public_key = None
        with GzipFile(fileobj=fileobj, mode="rb") as f:
            try:
                self.public_key = serialization.load_pem_public_key(
                    f.read(),
                    backend=default_backend()
                )
            except ValueError:
                # Could not decrypt content
                return False

        if not self.public_key:
            return False

        return True