Post Syndicated from original https://lwn.net/Articles/868536/rss

Version 3.0 of the OpenSSL TLS library has been released; the large
version-number jump (from 1.1.1) reflects a new versioning scheme.

Most applications that worked with OpenSSL 1.1.1 will still work
unchanged and will simply need to be recompiled (although you may
see numerous compilation warnings about using deprecated
APIs). Some applications may need to make changes to compile and
work correctly, and many applications will need to be changed to
avoid the deprecations warnings. We have put together a migration
guide to describe the major differences in OpenSSL 3.0 compared to
previous releases.

OpenSSL has also been relicensed to Apache 2.0, which should end the era of
“special exceptions” needed to use OpenSSL in GPL-licensed applications.
See this
blog entry and the changelog for
more information.