are secure (locked) notes end to end encrypted when backed on iCloud
Apple says that Secure notes are encrypted by using a password that is required to view the note on iOS, MacOS, and the iCloud website. When you secure a note, a 16-byte key is formed from your password using PBKDF2 and SHA256. The note’s contents are encrypted using AES-GCM.
From the above I understand that this is end to end encryption though Apple doesn’t say so. Is it correct?
Does it mean that when the secure notes are backed on the iCloud Apple have no access to them since my own password is a part of the encryption key and Apple doesn’t not know it (cannot recover in case I forget it).
If we look at the iMessages for instance, they are end to end encrypted while on your device but once you opt to back them up to the iCloud then Apple posses the encryption key. But you never create your own password for iMessages. That’s why I thought the case is different than the secure notes and the secure notes are end to end encrypted even backed up on the iCloud. Am I right?
