def __init__(self,
public_key_bytes: bytes,
backend: 'Union[BaseECCBackend, Type[BaseECCBackend], str, None]' = None,
) -> None:
validate_uncompressed_public_key_bytes(public_key_bytes)
self._raw_key = public_key_bytes
super().__init__(backend=backend)
def compress_public_key_bytes(
self, uncompressed_public_key_bytes: bytes) -> bytes:
validate_uncompressed_public_key_bytes(uncompressed_public_key_bytes)
point = (
big_endian_to_int(uncompressed_public_key_bytes[:32]),
big_endian_to_int(uncompressed_public_key_bytes[32:]),
)
public_key = self.keys.PublicKey.from_point(*point)
return public_key.format(compressed=True)