Indeed, the 4B doesn't have either AES or SHA2, hoping the 5 has both, and maybe sha3 too.
I just got my Pi 4B yesterday and started compiling today. A lot of work to do remove all the SSE2 hooks in the code,
Pi can do (almost) anything SSE2 can and some things SSE2 can't. I just have to figure out what those things are.

As far as AES and SHA are concerned, the code is already well segregated so Pi can live with out it just like Core2 can.
I'll ignore that code and focus on other parts until I get a CPU with the features, or someone in the community with
one volunteers.

It's not really about Pi though, the Pi is just a test vehicle. ARM is moving up, they'e in laptops and Macs, soon we may see
ARM desktops. I want to see how they might perform with AES and SHA2 against Intel and AMD core vs core.