argon2-cffi: Argon2 for Python#

Release v21.3.0 (What’s new?)

Argon2 won the Password Hashing Competition and argon2-cffi is the simplest way to use it in Python and PyPy:

>>> from argon2 import PasswordHasher
>>> ph = PasswordHasher()
>>> hash = ph.hash("correct horse battery staple")
>>> hash  
>>> ph.verify(hash, "correct horse battery staple")
>>> ph.check_needs_rehash(hash)
>>> ph.verify(hash, "Tr0ub4dor&3")
Traceback (most recent call last):
argon2.exceptions.VerifyMismatchError: The password does not match the supplied hash

User’s Guide#

Project Information#

argon2-cffi is available from PyPI, the documentation lives at Read the Docs, the code on GitHub. The low-level Argon2 CFFI bindings are maintained in the separate project argon2-cffi-bindings.

It targets Python 3.6 and newer, and PyPy3. The last version that works with Python 2.7 is 20.1.0, and the last version that works with Python 3.5 is 21.1.0.

argon2-cffi implements Argon2 version 1.3, as described in Argon2: the memory-hard function for password hashing and other applications.

argon2-cffi for Enterprise#

Available as part of the Tidelift Subscription.

The maintainers of argon2-cffi and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source packages you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact packages you use. Learn more.

Indices and tables#