didn't nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft build something along those lines already?
Discussion
I don't have time to scroll through 32,000 Pablo projects to find it
i do
https://nostrsigningdevice.com/nostr-software/nostr-key-management-software-2/nsec-bunker/
it's called nsecbunker