Registry / auth-security / ed25519-blake2b-fork

ed25519-blake2b-fork

library1.4.2pypypi✓ verified 85d ago

A fork of the ed25519 library that uses BLAKE2b instead of SHA-512 hashing for public-key signatures. Version 1.4.2 adds automatic wheel builds via cibuildwheel. The library provides Ed25519 signing and verification with a pure Python implementation. Release cadence is irregular.

auth-security serialization

pip install ed25519-blake2b-fork

github ↗package ↗

INSTALL

IMPORT

SIG · ED25519-BLAKE2B-FO

ed25519-blake2b-fork

auth-securitypythonv1.4.2

Install

1.5s avg

Import

10ms

Disk

16MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.4.2 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.008s · 18.2MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 1.5s · import 0.006s · 19MB

16MB installed

● package 16MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

SigningKey

✓ from ed25519_blake2b import SigningKey

Standard import for the fork.

VerifyingKey

✓ from ed25519_blake2b import VerifyingKey

Standard import for the fork.

Generate a key pair, sign a message, and verify the signature.

from ed25519_blake2b import SigningKey, VerifyingKey sk = SigningKey() vk = sk.get_verifying_key() message = b"Hello, world!" signature = sk.sign(message) print("Signature:", signature.hex()) assert vk.verify(signature, message) print("Verification passed!")

Debug

Known issues

gotchaThis library is a fork that uses BLAKE2b instead of SHA-512. Do not use it interchangeably with the standard ed25519 library; signatures are incompatible.

fix

Ensure you use this library only where BLAKE2b-based Ed25519 is expected.

affects: all

deprecatedThe package name 'ed25519-blake2b-fork' may be renamed or superseded. Check for newer versions or official replacements.

fix

Monitor the repository for updates or consider using the original ed25519 library with SHA-512 if compatibility is needed.

affects: <=1.4.2

gotchaThe private key seed generation uses system random. For deterministic keys, you must provide your own seed.

fix

Pass a 32-byte seed to SigningKey(seed=your_seed) for reproducible keys.

affects: all

Errors

Common errors & fixes

ImportError: No module named 'ed25519_blake2b'

The package is installed as ed25519-blake2b-fork but the import uses underscores.

fix

Ensure you installed the package: pip install ed25519-blake2b-fork
Then import: from ed25519_blake2b import SigningKey

AttributeError: module 'ed25519_blake2b' has no attribute 'SigningKey'

Possibly an older version or incorrect import path.

fix

Use from ed25519_blake2b import SigningKey. If still fails, reinstall package: pip install --upgrade ed25519-blake2b-fork

ed25519_blake2b.BadSignatureError: Invalid signature

Signature was created with a different key or algorithm (e.g., SHA-512 ed25519).

fix

Ensure you are using the same key and that the message hashing uses BLAKE2b. This fork is not compatible with standard Ed25519.

Upgrade

Version history

1.4.2latest on PyPI · released Mar 2, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

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Resources

githubhttps://github.com/ebellocchia/python-ed25519-blake2b ↗

packagehttps://pypi.org/project/ed25519-blake2b-fork/ ↗