Re: Need to check on compatibility issue

Michael Richardson <mcr+ietf-SWp7JaYWvAQV+D8aMU/[email protected]> Wed, 02 Jul 2025 15:21:57 -0400

Newsgroups	gmane.comp.encryption.openssl.user
Message-ID	<[email protected]>

Matt Caswell <[email protected]> wrote:
    >> All of our openssl releases are backwards compatible with older fips
    >> providers, no issues are currently known.
    >>
    >> To be clear, the above means that libcrypto.so from openssl 3.5 will
    >> work with the fips.so library from 3.4 and earlier releases.  It does
    >> not imply any forward compatibility, i.e. the fips.so file from 3.5 is
    >> not guaranteed to work with the libcrypto.so library from 3.4 and
    >> earlier.
    >>

    > Actually we test in both directions, e.g. 3.5 library with 3.4 fips
    > test run is here:

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.

--
Michael Richardson <mcr+IETF-SWp7JaYWvAQV+D8aMU/[email protected]>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide




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