Re: Need to check on compatibility issue

On Wed, Jul 2, 2025 at 12:22 PM Michael Richardson
<mcr+ietf-SWp7JaYWvAQV+D8aMU/[email protected]> wrote:
>
>
> Matt Caswell <[email protected]> wrote:
>     >> All of our openssl releases are backwards compatible with older fips
>     >> providers, no issues are currently known.

> But, do you promise it will always work?
>
> I would think that makes it impossible to add new ABI, or change the ABI that
> openssl provides.

The release strategy
(https://openssl-library.org/policies/releasestrat/index.html) only
allows breaking changes in the ABI (or API) when moving to a new major
version. That would mean 4.0 at the soonest. The roadmap
(https://openssl-library.org/roadmap/index.html) has 4.0 penciled in
for April 2026, but that doesn't necessarily mean ABIs will change
then.

Additionally, 3.5 was an LTS, so it will be supported until April
2030. But you are correct that nothing lasts forever.

-- 
Jon Ericson: OpenSSL Communities Manager

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