How to Install and Configure the Latest openssl version on Linux

To install the latest openssl version on Linux, you'll need to use a package manager like apt or yum.

You can check the current version of openssl by running the command "openssl version" in your terminal.

The latest version of openssl is version 1.1.1k, which was released on October 19, 2021.

This version includes several security patches and improvements, making it a safer choice for your Linux system.

The latest OpenSSL versions are a crucial aspect of ensuring the security of your online transactions. OpenSSL 1.1.1 is the latest stable version, released in November 2018.

OpenSSL 1.1.1 includes several key features, such as support for TLSv1.3 and improved performance. It also includes a number of bug fixes and security patches.

OpenSSL 3.0.0 is the latest development version, released in February 2022.

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The OpenSSL 3.6.0 release is a feature pre-release that adds significant new functionality to the library.

This release incorporates the following features, bug fixes, and mitigations:

The FIPS provider now performs a PCT on key import for RSA, EC, and ECX, which is mandated by FIPS 140-3 IG 10.3.A.

OpenSSL 3.6.0 also adds LMS signature verification support as per [SP 800-208], which is present in both the FIPS and default providers.

Building OpenSSL now requires a compiler that supports C-99 features, an ANSI-C toolchain is no longer sufficient.

The VxWorks platforms have been removed from OpenSSL 3.6.0.

An openssl configutl utility has been added for processing the openssl configuration file and dumping the equal configuration file.

FIPS 186-5 deterministic ECDSA signature generation is now supported in the FIPS provider.

EVP_PKEY_ASN1_METHOD related functions have been deprecated in OpenSSL 3.6.0.

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OpenSSL 3.5.2 is a bug fix release that incorporates various bug fixes and mitigations. It's a straightforward update that addresses known issues.

One of the notable changes in OpenSSL 3.5.2 is the FIPS provider, which now performs a PCT on key import for RSA, EC, and ECX. This change is mandated by FIPS 140-3 IG 10.3.A additional comment 1.

Additionally, OpenSSL 3.5.2 includes miscellaneous minor bug fixes.

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OpenSSL 3.3.4 is a bug fix release.

This version is a straightforward fix for existing issues, making it a safe choice for those who need to address specific problems.

OpenSSL 3.3.4 doesn't introduce any new features, it's solely focused on resolving bugs.

As a result, users who are already using OpenSSL 3.3.4 can breathe a sigh of relief knowing that their version is up to date.

OpenSSL 3.0.17 is a bug fix release. It's great to see the OpenSSL team addressing issues and improving the security of their software.

This version is a result of their ongoing efforts to make OpenSSL more reliable and secure.

The OpenSSL team's commitment to quality and security is evident in their regular updates and patches.

OpenSSL 3.5.0 is a feature release that adds significant new functionality to OpenSSL.

The default encryption cipher for the req, cms, and smime applications has been changed from des-ede3-cbc to aes-256-cbc.

This release also incorporates a change to the default TLS supported groups list, which now includes and prefers hybrid PQC KEM groups.

Some practically unused groups were removed from the default list.

The default TLS keyshares have been changed to offer X25519MLKEM768 and X25519.

All BIO_meth_get_*() functions were deprecated.

This release adds support for server side QUIC (RFC 9000), support for 3rd party QUIC stacks including 0-RTT support, and support for PQC algorithms (ML-KEM, ML-DSA and SLH-DSA).

A new configuration option no-tls-deprecated-ec was added to disable support for TLS groups deprecated in RFC8422.

A new configuration option enable-fips-jitter was added to make the FIPS provider use the JITTER seed source.

Support for central key generation in CMP, support for opaque symmetric key objects (EVP_SKEY), and support for multiple TLS keyshares were added.

Improved TLS key establishment group configurability and API support for pipelining in provided cipher algorithms were also added.

Known issues in 3.5.0 include a problem with calling SSL_accept on objects returned from SSL_accept_connection, which results in an error.

This issue can be handled by calling SSL_do_handshake instead, and a fix is planned for OpenSSL 3.5.1.

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To install the latest version of OpenSSL, start by checking the currently installed version using the command `openssl version`. This will help you identify the version you're currently running and determine the version you want to replace it with, such as OpenSSL 3.0.7.

You can install the new OpenSSL version in a specific directory, such as '/usr/local/ssl', and then enable the Link Libraries of OpenSSL. This will allow you to configure the new binary PATH for OpenSSL.

To configure the installation, use the commands `--prefix` and `--openssldir` to set the output path of OpenSSL, and `shared` to force the creation of a shared library. You can also use `zlib` to enable compression using the zlib library.

Here are the specific commands you can use to configure and compile OpenSSL:

After the compile process is complete, install the OpenSSL using the command `openssl install`. This will install the OpenSSL in the '/usr/local/ssl' directory.

To download the necessary tools, start by navigating to the '/usr/local/src' directory.

The latest stable version of OpenSSL, version 3.0.7, will be installed, so make sure to download the source code from the OpenSSL site.

Download the OpenSSL source code using wget, which will allow you to retrieve the latest version from the OpenSSL site.

Extract the openssl.tar.gz file, and then proceed to the 'openssl' directory.

The OpenSSL source code has been downloaded, and you're now ready to move on to the installation process.

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To install OpenSSL, you'll first need to download its source code. This can be done by navigating to the '/usr/local/src' directory and using the wget command to fetch the OpenSSL source code. The latest stable version of OpenSSL is version 3.0.7, which can be downloaded from the OpenSSL site.

Once downloaded, extract the openssl.tar.gz file and navigate to the 'openssl' directory. This is where you'll configure and compile OpenSSL using the commands '--prefix' and '--openssldir' to set the output path, 'shared' to create a shared library, and 'zlib' to enable compression using the zlib library.

After the compile process is complete, install OpenSSL using the command below. This will install the OpenSSL in the '/usr/local/ssl' directory. It's worth noting that updating OpenSSL may also require updating corresponding libraries, such as libssl, to ensure compatibility.

Here are the key commands to install OpenSSL:

You can configure OpenSSL to use a specific version of a library by using the -l option. For example, you can use -lssl to specify the version of the SSL library.

OpenSSL also supports the use of environment variables to configure its behavior. The OPENSSL_CONF environment variable can be used to specify the location of the OpenSSL configuration file.

The configuration file can be used to customize various aspects of OpenSSL's behavior, such as the cipher suites it uses and the protocols it supports.

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To configure link libraries, you'll need to create a new configuration file in the '/etc/ld.so.conf.d' directory. This file will specify the library path for OpenSSL.

The new configuration file should be named 'openssl-3.0.7.conf'. Paste the OpenSSL library path directory into this file.

To load the dynamic link, you'll need to reload it using the command. This will ensure that the OpenSSL libraries are loaded from the correct directory.

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To configure the binary, you'll want to replace the default OpenSSL binary with the new version. This can be done by adding the new OpenSSL binary directory to your system's PATH.

On Ubuntu 22.04 LTS, this involves adding the new OpenSSL binary directory, reloading the environment file, and testing the updated binary PATH. The new binary path for OpenSSL will be '/usr/local/ssl/bin/openssl'.

For CentOS, you'll need to back up the OpenSSL binary files, make the openssl.sh file executable, load the OpenSSL environment, and check the PATH bin directory. The binary path for OpenSSL on CentOS has been updated to the new location.

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Testing and Verification is a crucial step in ensuring the new OpenSSL version is working correctly.

You can test the new version on Linux Ubuntu 22.04 and CentOS 7.6.

The command to test the new OpenSSL version is straightforward to use.

To verify the installation, you can use the latest stable version of OpenSSL.