argon2-cffi-bindings

Low-level CFFI bindings for Argon2

argon2-cffi-bindings Permissive license MIT Active ★ 20 v25.1.0 released 2025-07-30

Install

argon2-cffi-bindings on PyPI

pip

pip install argon2-cffi-bindings

uv

uv add argon2-cffi-bindings

poetry

poetry add argon2-cffi-bindings

Package facts

License	MIT (permissive)
Python support	supports the current Python release (>=3.9)
Install friction	medium — platform-specific wheel
Runtime dependencies	1 — cffi
Maintenance	actively maintained — 379 days since the last release
Last repo commit	2026-08-06
First released	2021-11-28
Popularity	one of the top 1,000 most-downloaded packages on PyPI (30-day window, as of 2026-08-13)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-13)

Evidence: argon2_cffi_bindings-25.1.0-cp314-cp314t-macosx_10_13_universal2.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-macosx_10_13_x86_64.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-macosx_11_0_arm64.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-manylinux_2_26_aarch64.manylinux_2_28_aarch64.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-manylinux_2_26_x86_64.manylinux_2_28_x86_64.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-musllinux_1_2_aarch64.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-musllinux_1_2_x86_64.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-win32.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-win_amd64.whl; argon2_cffi_bindings-25.1.0-cp314-cp314t-win_arm64.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-macosx_10_9_universal2.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-macosx_10_9_x86_64.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-macosx_11_0_arm64.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-manylinux_2_26_aarch64.manylinux_2_28_aarch64.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-manylinux_2_26_x86_64.manylinux_2_28_x86_64.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-musllinux_1_2_aarch64.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-musllinux_1_2_x86_64.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-win32.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-win_amd64.whl; argon2_cffi_bindings-25.1.0-cp39-abi3-win_arm64.whl

Keywords: password, hash, hashing, security, bindings, cffi

Development Status :: 5 - Production/StableIntended Audience :: DevelopersNatural Language :: EnglishOperating System :: MacOS :: MacOS XOperating System :: Microsoft :: WindowsOperating System :: POSIXOperating System :: UnixProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.9Programming Language :: Python :: Free ThreadingProgramming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPyTopic :: SecurityTopic :: Security :: CryptographyTopic :: Software Development :: Libraries :: Python Modules

About argon2-cffi-bindings

from the package's own PyPI description — quoted content, verbatim

Low-level Python CFFI Bindings for Argon2

License: MIT (image) PyPI version (image) PyPI - Python Version (image)

argon2-cffi-bindings provides low-level CFFI bindings to the official implementation of the [Argon2] password hashing algorithm.

<!-- [[[cog

Extract commit ID; refresh using `tox -e cog-render`

import subprocess out = subprocess.check_output(["git", "submodule"], text=True) id = out.strip().split(" ", 1)[0] link = f'{id[:7]}' print(f"The currently vendored Argon2 commit ID is {link}.") ]]] --> The currently vendored Argon2 commit ID is f57e61e.

> [!NOTE] > If you want to hash passwords in an application, this package is not for...

Read as markdown · JSON record · Source repository

AI interpretation — verify before relying

AI-generated interpretation of the package facts above; every digit, version, license, or vulnerability id it cites is grounded in the facts already shown on this page

Provides low-level CFFI bindings to the official Argon2 password hashing algorithm, intended as a foundation for higher-level libraries rather than direct application use.

Medium install friction due to compiled C bindings via cffi, but mitigated by extensive pre-built wheels across Python 3.9–3.14 and major platforms (macOS, Linux, Windows, including ARM). Active maintenance with recent release (379 days ago as of fact sheet date).

MIT license permits unrestricted use, modification, and distribution in both open and proprietary contexts, with minimal obligations beyond attribution.

Usage

pip install argon2-cffi-bindings
from _argon2_cffi_bindings import ffi, lib
# Use ffi and lib objects per CFFI documentation for Argon2 operations

Requires Python ≥3.9; C compiler and cffi build dependencies for source installs (pre-built wheels available for most platforms).

Verdict: A stable, actively maintained low-level binding library suitable for packages that need direct Argon2 access without the overhead of higher-level abstractions. No known vulnerabilities, permissive MIT license, and broad platform/Python version coverage make it a reliable foundation dependency. Not intended for direct application use—consider argon2-cffi instead if you need password hashing abstractions.

Needs verification

Whether the vendored Argon2 commit f57e61e includes all security patches since its upstream release date.
Performance characteristics of SSE2 detection heuristics on non-x86 architectures or cross-compilation scenarios.
Whether the private module name (_argon2_cffi_bindings) effectively prevents accidental direct use in downstream applications.

argon2 password hashing bindingscffi argon2 librarylow-level password hashingargon2 cryptographic bindingspassword hash algorithm implementationcffi cryptography bindingsargon2 c library wrapper