1  from typing import Optional
   2  
   3  class sha224(object):
   4      name: str
   5      block_size: int
   6      digest_size: int
   7      digestsize: int
   8      def __init__(self, init: Optional[str]) -> None: ...
   9      def copy(self) -> sha224: ...
  10      def digest(self) -> str: ...
  11      def hexdigest(self) -> str: ...
  12      def update(self, arg: str) -> None: ...
  13  
  14  class sha256(object):
  15      name: str
  16      block_size: int
  17      digest_size: int
  18      digestsize: int
  19      def __init__(self, init: Optional[str]) -> None: ...
  20      def copy(self) -> sha256: ...
  21      def digest(self) -> str: ...
  22      def hexdigest(self) -> str: ...
  23      def update(self, arg: str) -> None: ...
  24