1073741824 l4(&D qţ 0:li~ J_)?qF _ya4(&D qţ.Installation ============ You can install ``cryptography`` with ``pip``: .. code-block:: console $ pip install cryptography If this does not work please **upgrade your pip** first, as that is the single most common cause of installation problems. Supported platforms ------------------- Currently we test ``cryptography`` on Python 3.6+ and PyPy3 on these operating systems. * x86-64 CentOS 8.x * x86-64 Fedora (latest) * x86-64 macOS 10.15 Catalina * x86-64 Ubuntu 18.04, 20.04, rolling * AArch64 Ubuntu 20.04 * x86-64 Debian Stretch (9.x), Buster (10.x), Bullseye (11.x), Bookworm (12.x) and Sid (unstable) * x86-64 Alpine (latest) * 32-bit and 64-bit Python on 64-bit Windows Server 2019 We test compiling with ``clang`` as well as ``gcc`` and use the following OpenSSL releases: * ``OpenSSL 1.1.0-latest`` * ``OpenSSL 1.1.1-latest`` * ``OpenSSL 3.0-latest`` In addition we test against several versions of LibreSSL and the latest commit in BoringSSL. Building cryptography on Windows -------------------------------- The wheel package on Windows is a statically linked build (as of 0.5) so all dependencies are included. To install ``cryptography``, you will typically just run .. code-block:: console $ pip install cryptography If you prefer to compile it yourself you'll need to have OpenSSL installed. You can compile OpenSSL yourself as well or use `a binary distribution`_. Be sure to download the proper version for your architecture and Python (VC2015 is required for 3.6 and above). Wherever you place your copy of OpenSSL you'll need to set the ``LIB`` and ``INCLUDE`` environment variables to include the proper locations. For example: .. code-block:: console C:\> \path\to\vcvarsall.bat x86_amd64 C:\> set LIB=C:\OpenSSL-win64\lib;%LIB% C:\> set INCLUDE=C:\OpenSSL-win64\include;%INCLUDE% C:\> pip install cryptography You will also need to have :ref:`Rust installed and available`. If you need to rebuild ``cryptography`` for any reason be sure to clear the local `wheel cache`_. .. _build-on-linux: Building cryptography on Linux ------------------------------ .. note:: If you are on RHEL/CentOS/Fedora/Debian/Ubuntu or another distribution derived from the preceding list, then you should **upgrade pip** and attempt to install ``cryptography`` again before following the instructions to compile it below. These platforms will receive a binary wheel and require no compiler if you have an updated ``pip``! ``cryptography`` ships ``manylinux`` wheels (as of 2.0) so all dependencies are included. For users on **pip 19.0** or above running on a ``manylinux2010`` (or greater) compatible distribution (or **pip 21.2.4** for ``musllinux``) all you should need to do is: .. code-block:: console $ pip install cryptography If you want to compile ``cryptography`` yourself you'll need a C compiler, a Rust compiler, headers for Python (if you're not using ``pypy``), and headers for the OpenSSL and ``libffi`` libraries available on your system. On all Linux distributions you will need to have :ref:`Rust installed and available`. Alpine ~~~~~~ .. warning:: The Rust available by default in Alpine < 3.12 is older than the minimum supported version. See the :ref:`Rust installation instructions ` for information about installing a newer Rust. .. code-block:: console $ sudo apk add gcc musl-dev python3-dev libffi-dev openssl-dev cargo If you get an error with ``openssl-dev`` you may have to use ``libressl-dev``. Debian/Ubuntu ~~~~~~~~~~~~~ .. warning:: The Rust available in current Debian stable and some Ubuntu versions is older than the minimum supported version. Ubuntu 18.04 and 20.04 are sufficiently new, but otherwise please see the :ref:`Rust installation instructions ` for information about installing a newer Rust. .. code-block:: consol