So, it can be generate a rotate key from the nsec + a passphrase, right?
Another point that supports the proposal of nostr:npub18dlusgmprudw46nracaldxe9hz4pdmrws8g6lsusy6qglcv5x48s0lh8x3 is that in PGP you can use a more robust algorithm that secp256k1 (Curve25519)