Topic: OpenSSL is a robust, commercial-grade, Cryptography and SSL/TLS Toolkit

[Software Santa]

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols.

https://www.openssl.org/

OpenSSL is a robust, commercial-grade, full-featured Open Source Toolkit for the Transport Layer Security (TLS) protocol formerly known as the Secure Sockets Layer (SSL) protocol. The protocol implementation is based on a full-strength general purpose cryptographic library, which can also be used stand-alone.

OpenSSL is descended from the SSLeay library developed by Eric A. Young and Tim J. Hudson.

The official Home Page of the OpenSSL Project is www.openssl.org
Overview

The OpenSSL toolkit includes:

    libssl an implementation of all TLS protocol versions up to TLSv1.3 (RFC 8446).

    libcrypto a full-strength general purpose cryptographic library. It constitutes the basis of the TLS implementation, but can also be used independently.

    openssl the OpenSSL command line tool, a swiss army knife for cryptographic tasks, testing and analyzing. It can be used for
        creation of key parameters
        creation of X.509 certificates, CSRs and CRLs
        calculation of message digests
        encryption and decryption
        SSL/TLS client and server tests
        handling of S/MIME signed or encrypted mail
        and more...




Welcome to OpenSSL!

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general-purpose cryptography library. For more information about the team and community around the project, or to start making your own contributions, start with the community page. To get the latest news, download the source, and so on, please see the sidebar or the buttons at the top of every page.

OpenSSL is licensed under an Apache-style license, which basically 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.

Downloads

The master sources are maintained in our git repository, which is accessible over the network and cloned on GitHub, at https://github.com/openssl/openssl. Bugs and pull patches (issues and pull requests) should be filed on the GitHub repo. Please familiarize yourself with the license.

The table below lists the latest releases for every branch. (For an explanation of the numbering, see our release strategy.) All releases can be found at /source/old. A list of mirror sites can be found here.

Note: The latest stable version is the 1.1.1 series. This is also our Long Term Support (LTS) version, supported until 11th September 2023. All older versions (including 1.1.0, 1.0.2, 1.0.0 and 0.9.8 ) are now out of support and should not be used. Users of these older versions are encouraged to upgrade to 1.1.1 as soon as possible. Extended support for 1.0.2 to gain access to security fixes for that version is available.

The OpenSSL FIPS Object Module 2.0 (FOM) is also available for download. It is no longer receiving updates. It must be used in conjunction with a FIPS capable version of OpenSSL (1.0.2 series). A new FIPS module is currently in development.

OpenSSL 3.0 is the next major version of OpenSSL that is currently in development and includes the new FIPS Object Module. A pre-release version of this is available below. This is for testing only. It should not be used in production. Information and notes about OpenSSL 3.0 are available on the OpenSSL Wiki

https://www.openssl.org/

https://github.com/openssl/openssl