8 months ago
(07 Sep 2021)
in 4 years
(07 Sep 2026)
3 years and 8 months ago
(11 Sep 2018)
in 1 year and 3 months
(11 Sep 2023)
5 years and 8 months ago
(26 Aug 2016)
2 years and 8 months ago
(11 Sep 2019)
7 years ago
(22 Jan 2015)
2 years and 4 months ago
(31 Dec 2019)
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. It is widely used by Internet servers, including the majority of HTTPS websites.
LTS releases will be supported for at least five years and they will specify one at least every four years. Non-LTS releases will be supported for at least two years.
As of release 3.0.0, the OpenSSL versioning scheme is changing to a more contemporary format: MAJOR.MINOR.PATCH
With this format, API/ABI compatibility will be guaranteed for the same MAJOR version number. Previously they guaranteed API/ABI compatibility across the same MAJOR.MINOR combination.
- MAJOR: API/ABI incompatible changes will increase this number
- MINOR: API/ABI compatible feature releases will change this
- PATCH: Bug fix releases will increment this number. We also allow backporting of accessor functions in these releases.
More information is available on the OpenSSL website.
You should be running one of the supported release numbers listed above in the rightmost column.