Open SSL

Cryptography and SSL/TLS Toolkit

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.

Latest News

Legalities

Please remember that export/import and/or use of strong cryptography software, providing cryptography hooks, or even just communicating technical details about cryptography software is illegal in some parts of the world. So when you import this package to your country, re-distribute it from there or even just email technical suggestions or even source patches to the authors or other people you are strongly advised to pay close attention to any laws or regulations which apply to you. The authors of OpenSSL are not liable for any violations you make here. So be careful, it is your responsibility.

Please report problems with this website to webmaster at openssl.org.

Copyright © 1999-2018, OpenSSL Software Foundation.

Open SSL

Cryptography and SSL/TLS Toolkit

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 encourage 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

When building a release for the first time, please make sure to look at the INSTALL file in the distribution along with any NOTES file applicable to your platform. If you have problems, look at the FAQ, which can be found online. If you still need more help, then join the openssl-users email list and post a question there.

PGP keys for the signatures are available from the OMC page. Current members that sign releases include Richard Levitte and Matt Caswell.

Each day we make a snapshot of each development branch. They can be found at https://www.openssl.org/source/snapshot/. These daily snapshots of the source tree are provided for convenience only and not even guaranteed to compile. Note that keeping a git local repository and updating it every 24 hours is equivalent and will often be faster and more efficient.

Legalities

Please remember that export/import and/or use of strong cryptography software, providing cryptography hooks, or even just communicating technical details about cryptography software is illegal in some parts of the world. So when you import this package to your country, re-distribute it from there or even just email technical suggestions or even source patches to the authors or other people you are strongly advised to pay close attention to any laws or regulations which apply to you. The authors of OpenSSL are not liable for any violations you make here. So be careful, it is your responsibility.

Downloads

Please report problems with this website to webmaster at openssl.org.

Copyright © 1999-2018, OpenSSL Software Foundation.

Openssl library windows download

Shining Light Productions uses PayPal for all donations because it is fast, easy, and secure.

A minimum $10.00 (US) donation is recommended for individuals. Businesses integrating Win32/Win64 OpenSSL into products must pay a minimum of $225 to help cover the cost of bandwidth. Businesses can alternatively pay smaller amounts on a regular basis (sponsorship).

Businesses: A $25/month recurring donation will get a logo and preferred placement on this page.

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Announcement Mailing List User’s like yourself have constantly been bugging Shining Light Productions for some sort of notification mechanism as to when products are released and/or updated. So, to add one more worthless website feature to the slowly growing collection, this website now supports adding your e-mail address to the Shining Light Productions back-end database to receive product announcements. Since I care for SPAM and spammers about as much as I do this «feature» all y’all are wanting, you can be rest assured I will only send you plain text e-mail when a Shining Light Productions product is added or updated. Sign up below to receive announcements: For those who want to filter content using their e-mail client, the subject line will always contain pertinent information for filtering in the following format (useful if you only want to receive notices for one specific product): [SLPro — Win32 OpenSSL] Win32 OpenSSL Released!

Product Support Shining Light Productions’ Technical Support is highly acclaimed by many as the best in the software industry. The reason? You get to talk to the original/current developer of the product one-on-one. this means that there is no annoying third party using scripted responses. The downside is that, since you ARE e-mailing a real developer, you need to realize this and respect the developer, no matter what mood he/she is in. A developer’s time is extremely valuable and a developer may not be in the most pleasant mood all the time. You can quickly get on any developer’s nerves by e-mailing multiple times, mis-spelling, mis-communicating, need to be told where your «Start» button is, or you manage to catch the developer at the end of an eight hour debugging session (or worse, the frantic portion of a release cycle). Shining Light Productions aims to be polite, but does not tolerate someone intentionally wasting a developer’s time. In addition to being concise, organized, and communicating clearly, below are some guidelines to follow that make the Shining Light Productions developer’s job that much easier to formulate a good response in a timely manner. Bug Reports: To report a bug in the Win32/Win64 OpenSSL Installation Project, send an e-mail to Shining Light Productions describing your system setup, pertinent configuration information, what your intended goal is, and provide all related information (no matter how irrelevant it seems) to the bug. Feature Requests: To suggest a feature, send an e-mail to Shining Light Productions describing the feature in as much detail as possible. Try to think of ways to make it benefit other users and thus make it a powerful, generic feature. General Questions: If none of the above applies to your question, make sure it hasn’t already been answered. For general questions or problems send an e-mail to Shining Light Productions containing your question about/problem(s) with the product. If applicable, send a configuration file that demonstrates the problem.

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