.. py:module:: ethereum.crypto.hash

Cryptographic Hash Functions
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.. contents:: Table of Contents
    :backlinks: none
    :local:

Introduction
------------

Cryptographic hashing functions.


.. only:: stage1

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


Functions
~~~~~~~~~

.. autoapisummary::
   :nosignatures:

   ethereum.crypto.hash.keccak256
   ethereum.crypto.hash.keccak512



Attributes
~~~~~~~~~~

.. autoapisummary::

   ethereum.crypto.hash.Hash32
   ethereum.crypto.hash.Hash64


Module Details
---------------

Hash32
~~~~~~



.. py:data:: Hash32
   
   

.. undocinclude:: /../src/ethereum/crypto/hash.py
   :language: python
   :lines: 19-19


Hash64
~~~~~~



.. py:data:: Hash64
   
   

.. undocinclude:: /../src/ethereum/crypto/hash.py
   :language: python
   :lines: 20-20


keccak256
~~~~~~~~~


.. function:: keccak256(buffer: ethereum.base_types.Bytes) -> Hash32
   :noindexentry:

   Computes the keccak256 hash of the input `buffer`.

   :param buffer: Input for the hashing function.

   :returns: **hash** -- Output of the hash function.
   :rtype: `ethereum.base_types.Hash32`




.. undocinclude:: /../src/ethereum/crypto/hash.py
   :language: python
   :pyobject: keccak256

keccak512
~~~~~~~~~


.. function:: keccak512(buffer: ethereum.base_types.Bytes) -> Hash64
   :noindexentry:

   Computes the keccak512 hash of the input `buffer`.

   :param buffer: Input for the hashing function.

   :returns: **hash** -- Output of the hash function.
   :rtype: `ethereum.base_types.Hash32`




.. undocinclude:: /../src/ethereum/crypto/hash.py
   :language: python
   :pyobject: keccak512