I have a question about your use case: using openssl makes sense for prod code, but whenever I want to experiment with fancy cryptosystems I usually reach for Sage. Is your goal to bridge that gap, or are you really just focused on prod code, or something else?
We wanted something that had well used backing and primitives (cryptography.io) and something that could prototype cryptosystems. As it stands, there isn't much in the Python universe here for this unless you're willing to dabble with C as well.
I built this so we could build something for production and prototype rapidly with the same toolset.
