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Metadata-Version: 2.1
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Name: argon2-cffi-bindings
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Version: 21.2.0
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Summary: Low-level CFFI bindings for Argon2
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Home-page: https://github.com/hynek/argon2-cffi-bindings
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Author: Hynek Schlawack
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Author-email: hs@ox.cx
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Maintainer: Hynek Schlawack
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Maintainer-email: hs@ox.cx
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License: MIT
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Project-URL: Source Code, https://github.com/hynek/argon2-cffi-bindings
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Project-URL: Funding, https://github.com/sponsors/hynek
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Project-URL: Tidelift, https://tidelift.com/subscription/pkg/pypi-argon2-cffi?utm_source=pypi-argon2-cffi&utm_medium=pypi
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Project-URL: Ko-fi, https://ko-fi.com/the_hynek
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Keywords: password,hash,hashing,security,bindings,cffi
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Platform: UNKNOWN
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Classifier: Development Status :: 5 - Production/Stable
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Classifier: Intended Audience :: Developers
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Classifier: License :: OSI Approved :: MIT License
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Classifier: Natural Language :: English
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Classifier: Operating System :: MacOS :: MacOS X
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Classifier: Operating System :: Microsoft :: Windows
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Classifier: Operating System :: POSIX
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Classifier: Operating System :: Unix
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Classifier: Programming Language :: Python :: 3
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Classifier: Programming Language :: Python :: 3.6
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Classifier: Programming Language :: Python :: 3.7
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Classifier: Programming Language :: Python :: 3.8
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Classifier: Programming Language :: Python :: 3.9
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Classifier: Programming Language :: Python :: 3.10
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Classifier: Programming Language :: Python :: Implementation :: CPython
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Classifier: Programming Language :: Python :: Implementation :: PyPy
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Classifier: Programming Language :: Python
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Classifier: Topic :: Security :: Cryptography
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Classifier: Topic :: Security
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Classifier: Topic :: Software Development :: Libraries :: Python Modules
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Requires-Python: >=3.6
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Description-Content-Type: text/markdown
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License-File: LICENSE
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Requires-Dist: cffi (>=1.0.1)
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Provides-Extra: dev
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Requires-Dist: pytest ; extra == 'dev'
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Requires-Dist: cogapp ; extra == 'dev'
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Requires-Dist: pre-commit ; extra == 'dev'
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Requires-Dist: wheel ; extra == 'dev'
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Provides-Extra: tests
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Requires-Dist: pytest ; extra == 'tests'
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# Low-level Python CFFI Bindings for Argon2
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*argon2-cffi-bindings* provides low-level [*CFFI*](https://cffi.readthedocs.io/) bindings to the [*Argon2*] password hashing algorithm including a vendored version of them.
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<!-- [[[cog
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# Extract commit ID; refresh using `tox -e cog`
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import subprocess
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out = subprocess.check_output(["git", "submodule"], text=True)
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id = out.strip().split(" ", 1)[0]
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link = f'[**`{id[:7]}`**](https://github.com/P-H-C/phc-winner-argon2/commit/{id})'
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print(f"The currently vendored *Argon2* commit ID is {link}.")
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]]] -->
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The currently vendored *Argon2* commit ID is [**`f57e61e`**](https://github.com/P-H-C/phc-winner-argon2/commit/f57e61e19229e23c4445b85494dbf7c07de721cb).
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<!-- [[[end]]] -->
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> If you want to hash passwords in an application, this package is **not** for you.
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> Have a look at [*argon2-cffi*] with its high-level abstractions!
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These bindings have been extracted from [*argon2-cffi*] and it remains its main consumer.
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However, they may be used by other packages that want to use the *Argon2* library without dealing with C-related complexities.
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## Usage
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*argon2-cffi-bindings* is available from [PyPI](https://pypi.org/project/argon2-cffi-bindings/).
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The provided *CFFI* bindings are compiled in API mode.
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Best effort is given to provide binary wheels for as many platforms as possible.
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### Disabling Vendored Code
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A copy of [*Argon2*] is vendored and used by default, but can be disabled if *argon2-cffi-bindings* is installed using:
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```console
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$ env ARGON2_CFFI_USE_SYSTEM=1 \
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python -m pip install --no-binary=argon2-cffi-bindings argon2-cffi-bindings
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```
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### Overriding Automatic *SSE2* Detection
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Usually the build process tries to guess whether or not it should use [*SSE2*](https://en.wikipedia.org/wiki/SSE2)-optimized code (see [`_ffi_build.py`](https://github.com/hynek/argon2-cffi-bindings/blob/main/src/_argon2_cffi_bindings/_ffi_build.py) for details).
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This can go wrong and is problematic for cross-compiling.
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Therefore you can use the `ARGON2_CFFI_USE_SSE2` environment variable to control the process:
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- If you set it to ``1``, *argon2-cffi-bindings* will build **with** SSE2 support.
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- If you set it to ``0``, *argon2-cffi-bindings* will build **without** SSE2 support.
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- If you set it to anything else, it will be ignored and *argon2-cffi-bindings* will try to guess.
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However, if our heuristics fail you, we would welcome a bug report.
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### Python API
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Since this package is intended to be an implementation detail, it uses a private module name to prevent your users from using it by accident.
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Therefore you have to import the symbols from `_argon2_cffi_bindings`:
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```python
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from _argon2_cffi_bindings import ffi, lib
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```
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Please refer to [*cffi* documentation](https://cffi.readthedocs.io/en/latest/using.html) on how to use the `ffi` and `lib` objects.
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The list of symbols that are provided can be found in the [`_ffi_build.py` file](https://github.com/hynek/argon2-cffi-bindings/blob/main/src/_argon2_cffi_bindings/_ffi_build.py).
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[*Argon2*]: https://github.com/p-h-c/phc-winner-argon2
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[*argon2-cffi*]: https://argon2-cffi.readthedocs.io/
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## Project Information
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*argon2-cffi-bindings* is available under the MIT license, available from [PyPI](https://pypi.org/project/argon2-cffi-bindings/), the source code and documentation can be found on [GitHub](https://github.com/hynek/argon2-cffi-bindings).
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*argon2-cffi-bindings* targets Python 3.6 and later, including PyPy3.
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### Credits & License
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*argon2-cffi-bindings* is written and maintained by [Hynek Schlawack](https://hynek.me/about/).
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It is released under the [MIT license](https://github.com/hynek/argon2-cffi/blob/main/LICENSE>).
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The development is kindly supported by [Variomedia AG](https://www.variomedia.de/).
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The authors of *Argon2* were very helpful to get the library to compile on ancient versions of Visual Studio for ancient versions of Python.
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The documentation quotes frequently in verbatim from the *Argon2* [paper](https://www.password-hashing.net/argon2-specs.pdf) to avoid mistakes by rephrasing.
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#### Vendored Code
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The original *Argon2* repo can be found at <https://github.com/P-H-C/phc-winner-argon2/>.
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Except for the components listed below, the *Argon2* code in this repository is copyright (c) 2015 Daniel Dinu, Dmitry Khovratovich (main authors), Jean-Philippe Aumasson and Samuel Neves, and under [CC0] license.
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The string encoding routines in src/encoding.c are copyright (c) 2015 Thomas Pornin, and under [CC0] license.
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The [*BLAKE2*](https://www.blake2.net) code in ``src/blake2/`` is copyright (c) Samuel Neves, 2013-2015, and under [CC0] license.
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[CC0]: https://creativecommons.org/publicdomain/zero/1.0/
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Ayxan