FreeBSD12 and OpenSSL 1.0.2

[Manifest Destruct]

We recently purchased the support of OpenSSL 1.0.2 to extend support for
our software through OpenSSL’s deprecation while we test functionality and
compatibility with upgrading our software platform from FreeBSD 11 to 12.
Would you be able to tell me if and for how long- FreeBSD 12 will be
compatible with OpenSSL 1.0.2? We do intend to upgrade both packages but
need to know the timeline given the constraint of our need to upgrade
OpenSSL 1.0.2.