Metadata-Version: 2.1
Name: eth-hash
Version: 0.6.0
Summary: eth-hash: The Ethereum hashing function, keccak256, sometimes (erroneously) called sha3
Home-page: https://github.com/ethereum/eth-hash
Author: The Ethereum Foundation
Author-email: snakecharmers@ethereum.org
License: MIT
Keywords: ethereum
Classifier: Development Status :: 3 - Alpha
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Natural Language :: English
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Requires-Python: >=3.8, <4
Description-Content-Type: text/markdown
License-File: LICENSE
Provides-Extra: dev
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Requires-Dist: bumpversion >=0.5.3 ; extra == 'dev'
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Requires-Dist: pre-commit >=3.4.0 ; extra == 'dev'
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Provides-Extra: pycryptodome
Requires-Dist: pycryptodome <4,>=3.6.6 ; extra == 'pycryptodome'
Provides-Extra: pysha3
Requires-Dist: pysha3 <2.0.0,>=1.0.0 ; (python_version < "3.9") and extra == 'pysha3'
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Provides-Extra: test
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# eth-hash

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The Ethereum hashing function, keccak256, sometimes (erroneously) called sha3

Note: the similarly named [pyethash](https://github.com/ethereum/ethash)
has a completely different use: it generates proofs of work.

This is a low-level library, intended to be used internally by other Ethereum tools.
If you're looking for a convenient hashing tool, check out
[`eth_utils.keccak()`](https://eth-utils.readthedocs.io/en/stable/utilities.html#keccak-bytes-int-bool-text-str-hexstr-str-bytes)
which will be a little friendlier, and provide access to other helpful utilities.

Read more in the [documentation on ReadTheDocs](https://eth-hash.readthedocs.io/). [View the change log](https://eth-hash.readthedocs.io/en/latest/release_notes.html).

## Quickstart

```sh
python -m pip install "eth-hash[pycryptodome]"
```

```py
>>> from eth_hash.auto import keccak
>>> keccak(b'')
b"\xc5\xd2F\x01\x86\xf7#<\x92~}\xb2\xdc\xc7\x03\xc0\xe5\x00\xb6S\xca\x82';{\xfa\xd8\x04]\x85\xa4p"
```

See the [docs](http://eth-hash.readthedocs.io/en/latest/quickstart.html#quickstart)
for more about choosing and installing backends.

## Developer Setup

If you would like to hack on eth-hash, please check out the [Snake Charmers
Tactical Manual](https://github.com/ethereum/snake-charmers-tactical-manual)
for information on how we do:

- Testing
- Pull Requests
- Documentation

We use [pre-commit](https://pre-commit.com/) to maintain consistent code style. Once
installed, it will run automatically with every commit. You can also run it manually
with `make lint`. If you need to make a commit that skips the `pre-commit` checks, you
can do so with `git commit --no-verify`.

### Development Environment Setup

You can set up your dev environment with:

```sh
git clone git@github.com:ethereum/eth-hash.git
cd eth-hash
python -m virtualenv venv
. venv/bin/activate
python -m pip install -e ".[dev]"
pre-commit install
```

### Release setup

To release a new version:

```sh
make release bump=$$VERSION_PART_TO_BUMP$$
```

#### How to bumpversion

The version format for this repo is `{major}.{minor}.{patch}` for stable, and
`{major}.{minor}.{patch}-{stage}.{devnum}` for unstable (`stage` can be alpha or beta).

To issue the next version in line, specify which part to bump,
like `make release bump=minor` or `make release bump=devnum`. This is typically done from the
master branch, except when releasing a beta (in which case the beta is released from master,
and the previous stable branch is released from said branch).

If you are in a beta version, `make release bump=stage` will switch to a stable.

To issue an unstable version when the current version is stable, specify the
new version explicitly, like `make release bump="--new-version 4.0.0-alpha.1 devnum"`
