The best you can do is use the SE to decrypt the key and then use the clear text key for encryption/decryption.
This also means that passkeys on macOS/iOS are (at some point) exposed as clear text.
AFAIK this is what "secretive" was doing all the time.
The best you can do is use the SE to decrypt the key and then use the clear text key for encryption/decryption.
This also means that passkeys on macOS/iOS are (at some point) exposed as clear text.