Pure-Python data structure for working with Ed25519 (and Ristretto) field elements and operations.
Purpose
This library provides a native Python implementation of Ed25519 field elements and a number of operations over them. The library makes it possible to fill gaps in application prototypes that may have specific limitations with respect to their operating environment or their ability to rely on non-Python dependencies.
The implementation is based upon and is compatible with the corresponding implementation of Ed25519 and Ristretto field elements used in libsodium. For more information and background about the underlying mathematical structures and primitives, consult materials about Curve25519, the Ristretto group, and the related Ed25519 system.
Installation and Usage
This library is available as a package on PyPI:
python -m pip install fe25519The library can be imported in the usual manner:
import fe25519
from fe25519 import fe25519Development
All installation and development dependencies are fully specified in pyproject.toml. The project.optional-dependencies object is used to specify optional requirements for various development tasks. This makes it possible to specify additional options (such as docs, lint, and so on) when performing installation using pip:
python -m pip install ".[docs,lint]"Documentation
The documentation can be generated automatically from the source files using Sphinx:
python -m pip install ".[docs]"
cd docs
sphinx-apidoc -f -E --templatedir=_templates -o _source .. && make htmlTesting and Conventions
All unit tests are executed and their coverage is measured when using pytest (see the pyproject.toml file for configuration details):
python -m pip install ".[test]"
python -m pytestConcise unit tests are implemented with the help of fountains; new reference specifications for these tests can be generated by running the testing module directly:
python test/test_fe25519.pyStyle conventions are enforced using Pylint:
python -m pip install ".[lint]"
python -m pylint src/fe25519 test/test_fe25519.pyContributions
In order to contribute to the source code, open an issue or submit a pull request on the GitHub page for this library.
Versioning
Beginning with version 0.1.0, the version number format for this library and the changes to the library associated with version number increments conform with Semantic Versioning 2.0.0.
Publishing
This library can be published as a package on PyPI via the GitHub Actions workflow found in .github/workflows/build-publish-sign-release.yml that follows the recommendations found in the Python Packaging User Guide.
Ensure that the correct version number appears in pyproject.toml, and that any links in this README document to the Read the Docs documentation of this package (or its dependencies) have appropriate version numbers. Also ensure that the Read the Docs project for this library has an automation rule that activates and sets as the default all tagged versions.
To publish the package, create and push a tag for the version being published (replacing ?.?.? with the version number):
git tag ?.?.?
git push origin ?.?.?2 maintainers
Metadata
2 maintainers
Release files for fe25519 2.0.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| fe25519-2.0.0.tar.gz | 12.5 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| fe25519-2.0.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 21.0 kB
Release files / fe25519-2.0.0.tar.gz
| Download URL | fe25519-2.0.0.tar.gz |
|---|---|
| Size | 12.5 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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| Upload date | |
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Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.7
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Signed by GitHub Actions, verified by PyPI on Sep 21, 2025.
Transparency logRelease files / fe25519-2.0.0-py3-none-any.whl
| Download URL | fe25519-2.0.0-py3-none-any.whl |
|---|---|
| Size | 8.4 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
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|
BLAKE2b-256 checksum How to use checksums |
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|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.7
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 21, 2025.
Transparency log
