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eth-hash: The Ethereum hashing function, keccak256, sometimes (erroneously) called sha3
The Ethereum hashing function, keccak256, sometimes (erroneously) called sha3
Note: the similarly named pyethash 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()
which will be a little friendlier, and provide access to other helpful utilities.
Read more in the documentation on ReadTheDocs. View the change log.
python -m pip install "eth-hash[pycryptodome]"
>>> 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 for more about choosing and installing backends.
If you would like to hack on eth-hash, please check out the Snake Charmers Tactical Manual for information on how we do:
We use pre-commit 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
.
You can set up your dev environment with:
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
To release a new version:
make release bump=$$VERSION_PART_TO_BUMP$$
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"
FAQs
eth-hash: The Ethereum hashing function, keccak256, sometimes (erroneously) called sha3
We found that eth-hash demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 5 open source maintainers collaborating on the project.
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