I'm looking for key management software like #GPG / Kleopatra for use by a school counsellor, for managing key pairs that will encrypt confidential information in various systems.

It _must_ run on WIndows _and_ macOS, and be usable by a tech literate and able social worker. No "install Linux" please - the tech must be as transparent and frictionless as possible.

Still interested in answers, but the way #Liberaforms guides users in managing the private key is very good. I think a decent password manager will suffice here. I have my keys in a #veracrypt volume.