I refactored opmsg for the new OpenSSL 3.0.0 API and put it into the openssl3-dev branch. Master branch is still the main development branch and both branches produce 1:1 identical output of messages, so one can cross-over test them. Over the long run it is probably necessary to switch to OpenSSL 3.0, but the downside is that it will lose compatibility with the LibreSSL API.

On the plus side, I learned a lot of the inner workings of OpenSSL while refactoring my own code. Including misleading man pages.That will definitely give me an adavantage for the next crypto project code review. :)

Wish you a nice pre-xmas time!