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Hash

The tool to check the availability or syntax of domain, IP or URL.

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Provides the hashing helpers.

Author: Nissar Chababy, @funilrys, contactTATAfunilrysTODTODcom

Special thanks: https://pyfunceble.github.io/#/special-thanks

Contributors: https://pyfunceble.github.io/#/contributors

Project link: https://github.com/funilrys/PyFunceble

Project documentation: https://docs.pyfunceble.com

Project homepage: https://pyfunceble.github.io/

License: ::

Copyright 2017, 2018, 2019, 2020, 2022, 2023, 2024 Nissar Chababy

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

HashHelper

Simplify the hashing of data or file content.

Parameters:

Name Type Description Default
algo str

The algorithm to use for hashing.

None

Raises:

Type Description
ValueError

When the given algo is not known.

Source code in PyFunceble/helpers/hash.py
class HashHelper:
    """
    Simplify the hashing of data or file content.

    :param str algo:
        The algorithm to use for hashing.

    :raise ValueError: When the given algo is not known.
    """

    _algo: str = "SHA512_224"

    def __init__(self, algo: Optional[str] = None):
        if algo is not None:
            self.algo = algo

    @property
    def algo(self) -> str:
        """
        Provides the current state fo the :code:`_algo` attribute.
        """

        return self._algo

    @algo.setter
    def algo(self, value: str) -> None:
        """
        Sets the algorithm to work with.

        :param value:
            The name of the hash to use.

        :raise TypeError:
            When :code:`value` is not a :py:class:`str`.
        """

        if not isinstance(value, str):
            raise TypeError(f"<value> should be {str}, {type(value)} given.")

        value = value.lower()

        if value not in hashlib.algorithms_available:
            raise ValueError(
                f"<value> ({value!r}) in an unknown algorithm "
                f"({hashlib.algorithms_available})."
            )

        self._algo = value

    def set_algo(self, value: str) -> "HashHelper":
        """
        Sets the algorithm to work with.

        :param value:
            The name of the hash to use.
        """

        self.algo = value

        return self

    def hash_file(self, file_path: str) -> str:
        """
        Hashes the content of the given file.

        :param file_path:
            The path of the file to read.
        """

        block_size = 4096

        digest = hashlib.new(self.algo)

        with FileHelper(file_path).open("rb") as file_stream:
            block = file_stream.read(block_size)

            while block:
                digest.update(block)
                block = file_stream.read(block_size)

        return digest.hexdigest()

    def hash_data(self, data: Union[str, bytes]) -> str:
        """
        Hashes the given data.

        :param data:
            The data to hash.

        :raise TypeError:
            When :code:`data` is not :py:class:`str` or :py:class:`bytes`.
        """

        if not isinstance(data, (bytes, str)):
            raise TypeError(f"<data> should be {bytes} or {str}, {type(data)}, given.")

        if isinstance(data, str):
            data = data.encode()

        digest = hashlib.new(self.algo)
        digest.update(data)

        return digest.hexdigest()

algo: str property writable

Provides the current state fo the :code:_algo attribute.

hash_data(data)

Hashes the given data.

Parameters:

Name Type Description Default
data Union[str, bytes]

The data to hash.

required

Raises:

Type Description
TypeError

When :code:data is not class:str or class:bytes.

Source code in PyFunceble/helpers/hash.py
def hash_data(self, data: Union[str, bytes]) -> str:
    """
    Hashes the given data.

    :param data:
        The data to hash.

    :raise TypeError:
        When :code:`data` is not :py:class:`str` or :py:class:`bytes`.
    """

    if not isinstance(data, (bytes, str)):
        raise TypeError(f"<data> should be {bytes} or {str}, {type(data)}, given.")

    if isinstance(data, str):
        data = data.encode()

    digest = hashlib.new(self.algo)
    digest.update(data)

    return digest.hexdigest()

hash_file(file_path)

Hashes the content of the given file.

Parameters:

Name Type Description Default
file_path str

The path of the file to read.

required
Source code in PyFunceble/helpers/hash.py
def hash_file(self, file_path: str) -> str:
    """
    Hashes the content of the given file.

    :param file_path:
        The path of the file to read.
    """

    block_size = 4096

    digest = hashlib.new(self.algo)

    with FileHelper(file_path).open("rb") as file_stream:
        block = file_stream.read(block_size)

        while block:
            digest.update(block)
            block = file_stream.read(block_size)

    return digest.hexdigest()

set_algo(value)

Sets the algorithm to work with.

Parameters:

Name Type Description Default
value str

The name of the hash to use.

required
Source code in PyFunceble/helpers/hash.py
def set_algo(self, value: str) -> "HashHelper":
    """
    Sets the algorithm to work with.

    :param value:
        The name of the hash to use.
    """

    self.algo = value

    return self