from typing import Union, Optional Buffer = Union[bytes, bytearray, memoryview] class SHA224Hash(object): digest_size: int block_size: int oid: str def __init__(self, data: Optional[Buffer] = ...) -> None: ... def update(self, data: Buffer) -> None: ... def digest(self) -> bytes: ... def hexdigest(self) -> str: ... def copy(self) -> SHA224Hash: ... def new(self, data: Optional[Buffer] = ...) -> SHA224Hash: ... def new(data: Optional[Buffer] = ...) -> SHA224Hash: ... digest_size: int block_size: int