If someone like the native approach or is familiar with SeKey, I created sekey-sh to simplify the process: https://github.com/cavoirom/sekey-sh

Work on macOS 26 and later.

I was looking in to this just earlier today. The native macos version worries me a little because it seems someone just happened to discover it in MacOS, rather than it being a documented feature. The worry being Apple could change or remove it later locking you out of your keys since they never advertised this as a thing you could do.