In this article, we’ll explain how to install OpenSSL 1.1.1i in CentOS 8.

  1. Install Openssl Powershell
  2. Installing Openssl Linux
  3. Installing Openssl-1.1.1j
  4. Installing Openssl On Windows 10
  5. Openssl Windows Installation
  6. Installing Openssl On Mac

OpenSSL is built into most Linux distributions. Java keytool installs as part of a system's Java Runtime Engine (JRE). If neither is present, do the following: Mac: Download and install OpenSSL. Download and install a JRE from Oracle's web site. Linux: Issue these commands: sudo apt-get install openssl sudo apt-get install default-jre. Install development tool. We need to install a development tool and few dependencies to install OpenSSL # dnf group install ‘Development Tools’ 3. Install dependencies # dnf install perl-core zlib-devel -y. Download OpenSSL 1.1.1i. We will download the latest stable version is the 1.1.1 series. This short tutorial shows you how to install OpenSSL on Ubuntu 12.04. The process is very simple. For this tutorial, I'll be installing openssl version 0.9.8e and the latest 1.0.1g (released Apr 07, 2014). Linux kernel is 3.2.0-23-powerpc-smp. I have used a Mac Mini (powerpc/ppc architecture). GCC version number is.

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. OpenSSL is a software library for applications that secure communications over computer networks against eavesdropping or need to identify the party at the other end.

OpenSSL is licensed under an Apache-style license, which means that you are free to get and use it for commercial and non-commercial purposes subject to some simple license conditions. For a list of vulnerabilities, and the releases in which they were found and fixes, see our Vulnerabilities page.


  • A CentOS 8 installed dedicated server or KVM VPS.
  • A root user access or normal user with administrative privileges.

1. Keep the server up to date

Always keep the server up to date the security purpose.

# dnf update -y

2. Install development tool

We need to install a development tool and few dependencies to install OpenSSL

# dnf group install ‘Development Tools’

3. Install dependencies

# dnf install perl-core zlib-devel -y

4. Download OpenSSL 1.1.1i

We will download the latest stable version is the 1.1.1 series. This is also our Long Term Support (LTS) version, supported until 11th September 2023.

# cd /usr/local/src/

# wget

Now, extract the tar file

# tar -xzvf openssl-1.1.1i.tar.gz

5. Configure and build

Navigate to the extracted directory and configure, build, test and install OpenSSL in the default location /usr/local/ssl.

# cd openssl-1.1.1i

Configure it with PATH

# ./config –prefix=/usr/local/ssl –openssldir=/usr/local/ssl shared zlib


Now, build

# make

Installing Openssl

# make test

# make install

6. Configure it shared libraries.

Once we have successfully installed OpenSSL, configure it shared libraries.

Naviagate to the /etc/ directory and create a configuration file.

# cd /etc/

# vi openssl-1.1.1i.conf

Add the following path in the config file


Save and exit

Reload the dynamic link

# ldconfig -v

7. Configure OpenSSL Binary

Now, we are going to insert the binary of our new version of OpenSSL /usr/local/ssl/bin/openssl and replace the default openssl file.

First, take a backup of existed openssl file.

# mv /bin/openssl /bin/openssl.backup

Create new environment files for OpenSSL

# vi /etc/profile.d/

and add the following lines

export PATH

Save & exit

Make the newly created file executable

# chmod +x /etc/profile.d/

Installing Openssl

Reload the new OpenSSL environment file and check the default PATH

# source /etc/profile.d/
# echo $PATH

Now, let’s verify the installation and version of the OpenSSL

# which openssl
# openssl version -a

Output will be similar like:

OpenSSL 1.1.1i 8 Dec 2020
built on: Sun Jan 10 03:58:36 2021 UTC
platform: linux-x86_64
options: bn(64,64) rc4(16x,int) des(int) idea(int) blowfish(ptr)
OPENSSLDIR: “/usr/local/ssl”
ENGINESDIR: “/usr/local/ssl/lib/engines-1.1”
Seeding source: os-specific

That’s it, the installation has been completed successfully.

In this article, we’ve learned how to install OpenSSL 1.1.1i in CentOS 8.

installinstallationcentossecurityconfigureapacheroot usercentos 8root user accessuser accessconfigurationopensslinstall opensslopenssl binaryopenssl 1.1.1install openssl 1.1.1apache license

You can install cryptography with pip:

If this does not work please upgrade your pip first, as that is thesingle most common cause of installation problems.

Supported platforms¶

Currently we test cryptography on Python 3.6+ and PyPy3 7.3.1 on theseoperating systems.

  • x86-64 & AArch64 CentOS 8.x
  • x86-64 Fedora (latest)
  • x86-64 macOS 10.15 Catalina
  • x86-64 & AArch64 Ubuntu 18.04, 20.04
  • x86-64 Ubuntu rolling
  • x86-64 Debian Stretch (9.x), Buster (10.x), Bullseye (11.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 followingOpenSSL releases:

  • OpenSSL1.1.0-latest
  • OpenSSL1.1.1-latest

Building cryptography on Windows¶

The wheel package on Windows is a statically linked build (as of 0.5) so alldependencies are included. To install cryptography, you will typicallyjust run

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 OpenSSLyou’ll need to set the LIB and INCLUDE environment variables to includethe proper locations. For example:

As of OpenSSL 1.1.0 the library names have changed from libeay32 andssleay32 to libcrypto and libssl (matching their names on all otherplatforms). cryptography links against the new 1.1.0 names by default. Ifyou need to compile cryptography against an older version then you mustset CRYPTOGRAPHY_WINDOWS_LINK_LEGACY_OPENSSL or else installation will fail.

You will also need to have Rust installed andavailable.

If you need to rebuild cryptography for any reason be sure to clear thelocal wheel cache.

Building cryptography on Linux¶


If you are on RHEL/CentOS/Fedora/Debian/Ubuntu or another distributionderived from the preceding list, then you should upgrade pip andattempt to install cryptography again before following the instructionsto compile it below. These platforms will receive a binary wheel andrequire no compiler if you have an updated pip!

cryptography ships manylinux wheels (as of 2.0) so all dependenciesare included. For users on pip 19.0 or above running on a manylinux2010(or greater) compatible distribution (almost everything except Alpine) allyou should need to do is:

If you are on Alpine or just want to compile it yourself thencryptography requires a C compiler, a Rust compiler, headers for Python (ifyou’re not using pypy), and headers for the OpenSSL and libffi librariesavailable on your system.

On all Linux distributions you will need to have Rust installed andavailable.



The Rust available by default in Alpine < 3.12 is older than the minimumsupported version. See the Rust installation instructions for information about installing a newer Rust.

Install Openssl Powershell

If you get an error with openssl-dev you may have to use libressl-dev.



The Rust available in current Debian stable and some Ubuntu versions isolder than the minimum supported version. Ubuntu 18.04 and 20.04 aresufficiently new, but otherwise please see theRust installation instructions for informationabout installing a newer Rust.

Fedora/RHEL 8/CentOS 8¶


For RHEL and CentOS you must be on version 8.3 or newer for the commandbelow to install a sufficiently new Rust. If your Rust is less than 1.41.0please see the Rust installation instructionsfor information about installing a newer Rust.

RHEL 7/CentOS 7¶


You must install Rust using the Rust installation instructions. cryptography requires a Rust version newer thanwhat is provided in the distribution packages.


You should now be able to build and install cryptography. To avoid gettingthe pre-built wheel on manylinux compatible distributions you’ll need touse --no-binary.

Using your own OpenSSL on Linux¶

Python links to OpenSSL for its own purposes and this can sometimes causeproblems when you wish to use a different version of OpenSSL with cryptography.If you want to use cryptography with your own build of OpenSSL you will need tomake sure that the build is configured correctly so that your version ofOpenSSL doesn’t conflict with Python’s.

The options you need to add allow the linker to identify every symbol correctlyeven when multiple versions of the library are linked into the same program. Ifyou are using your distribution’s source packages these will probably bepatched in for you already, otherwise you’ll need to use options something likethis when configuring OpenSSL:

Static Wheels¶

Installing Openssl

Cryptography ships statically-linked wheels for macOS, Windows, and Linux (viamanylinux). This allows compatible environments to use the most recentOpenSSL, regardless of what is shipped by default on those platforms. SomeLinux distributions (most notably Alpine) are not manylinux compatible sowe cannot distribute wheels for them.

However, you can build your own statically-linked wheels that will work on yourown systems. This will allow you to continue to use relatively old Linuxdistributions (such as LTS releases), while making sure you have the mostrecent OpenSSL available to your Python programs.

To do so, you should find yourself a machine that is as similar as possible toyour target environment (e.g. your production environment): for example, spinup a new cloud server running your target Linux distribution. On this machine,install the Cryptography dependencies as mentioned in Building cryptography on Linux.Please also make sure you have virtualenv installed: this should beavailable from your system package manager.

Then, paste the following into a shell script. You’ll need to populate theOPENSSL_VERSION variable. To do that, visit and find thelatest non-FIPS release version number, then set the string appropriately. Forexample, for OpenSSL 1.0.2k, use OPENSSL_VERSION='1.0.2k'.

When this shell script is complete, you’ll find a collection of wheel files ina directory called wheelhouse. These wheels can be installed by asufficiently-recent version of pip. The Cryptography wheel in thisdirectory contains a statically-linked OpenSSL binding, which ensures that youhave access to the most-recent OpenSSL releases without corrupting your systemdependencies.

Installing Openssl Linux

Building cryptography on macOS¶

Installing Openssl-1.1.1j


If installation gives a fatalerror:'openssl/aes.h'filenotfoundsee the FAQ for information about how to fix this issue.

The wheel package on macOS is a statically linked build (as of 1.0.1) so forusers with pip 8 or above you only need one step:

If you want to build cryptography yourself or are on an older macOS version,cryptography requires the presence of a C compiler, development headers, andthe proper libraries. On macOS much of this is provided by Apple’s Xcodedevelopment tools. To install the Xcode command line tools (on macOS 10.10+)open a terminal window and run:

This will install a compiler (clang) along with (most of) the requireddevelopment headers.

Installing Openssl On Windows 10

You will also need to have Rust installed andavailable, which can be obtained from Homebrew,MacPorts, or directly from the Rust website.

Finally you need OpenSSL, which you can obtain from Homebrew or MacPorts.Cryptography does not support the OpenSSL/LibreSSL libraries Apple shipsin its base operating system.

To build cryptography and dynamically link it:


You can also build cryptography statically:


If you need to rebuild cryptography for any reason be sure to clear thelocal wheel cache.

Openssl Windows Installation



If you are on RHEL/CentOS/Fedora/Debian/Ubuntu or another distributionderived from the preceding list, then you should upgrade pip (ina virtual environment!) and attempt to install cryptography againbefore trying to install the Rust toolchain. These platforms will receivea binary wheel and require no compiler if you have an updated pip!

Building cryptography requires having a working Rust toolchain. The currentminimum supported Rust version is 1.41.0. This is newer than the Rust mostpackage managers ship, so users will likely need to install with theinstructions below.

Installing Openssl On Mac

Instructions for installing Rust can be found on the Rust Project’s website.We recommend installing Rust with rustup (as documented by the RustProject) in order to ensure you have a recent version.

Rust is only required when building cryptography, meaning that you mayinstall it for the duration of your pipinstall command and then remove itfrom a system. A Rust toolchain is not required to usecryptography. Indeployments such as docker, you may use a multi-stage Dockerfile whereyou install Rust during the build phase but do not install it in the runtimeimage. This is the same as the C compiler toolchain which is also required tobuild cryptography, but not afterwards.

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