An example in Ktor would be welcome, but a general methodology is more what I'm looking for.
I have looked extensively into JWTs and have seen arguments for and against using them for user authentication. From what I've found in my research, however, there seems to be no real standard for how to do high security authentication; OAuth being the only exception and not an option.
Using OAuth methodology doesn't seem like a terrible idea, but it doesn't use JWTs (instead random generated strings?) and detailed documentation on that seems scares as well.