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|
from abc import (
ABC,
abstractmethod,
)
from typing import (
Union,
)
class PreImageAPI(ABC):
@abstractmethod
def __init__(self, value: bytes) -> None:
...
@abstractmethod
def update(self, value: bytes) -> None:
...
@abstractmethod
def digest(self) -> bytes:
...
@abstractmethod
def copy(self) -> "PreImageAPI":
...
class BackendAPI(ABC):
@abstractmethod
def keccak256(self, in_data: Union[bytearray, bytes]) -> bytes:
...
@abstractmethod
def preimage(self, in_data: Union[bytearray, bytes]) -> PreImageAPI:
...
|
