hashlib -- Hashing algorithms.
==============================
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.. py:module:: hashlib

.. autoapi-nested-parse::

   Hashing algorithms.

   |see_cpython_module| :mod:`python:hashlib`.

   This module implements binary data hashing algorithms. The exact inventory
   of available algorithms depends on a board. Among the algorithms which may
   be implemented:

   * SHA256 - The current generation, modern hashing algorithm (of SHA2 series).
     It is suitable for cryptographically-secure purposes. Included in the
     MicroPython core and any board is recommended to provide this, unless
     it has particular code size constraints.

   * SHA1 - A previous generation algorithm. Not recommended for new usages,
     but SHA1 is a part of number of Internet standards and existing
     applications, so boards targeting network connectivity and
     interoperability will try to provide this.

   * MD5 - A legacy algorithm, not considered cryptographically secure. Only
     selected boards, targeting interoperability with legacy applications,
     will offer this.



Classes
-------

.. autoapisummary::

   hashlib.hash
   hashlib.md5
   hashlib.sha1
   hashlib.sha256


Module Contents
---------------

.. py:class:: hash

   .. py:method:: digest() -> bytes

      Return hash for all data passed through hash, as a bytes object. After this
      method is called, more data cannot be fed into the hash any longer.



   .. py:method:: hexdigest() -> _typeshed.Incomplete

      This method is NOT implemented. Use ``binascii.hexlify(hash.digest())``
      to achieve a similar effect.



   .. py:method:: update(data) -> _typeshed.Incomplete

      Feed more binary data into hash.



.. py:class:: md5(data: Optional[Any] = None)

   Create an MD5 hasher object and optionally feed ``data`` into it.


.. py:class:: sha1(data: Optional[Any] = None)

   Create an SHA1 hasher object and optionally feed ``data`` into it.


.. py:class:: sha256(data: Optional[Any] = None)

   Create an SHA256 hasher object and optionally feed ``data`` into it.