Storing arbitrary files

Sometimes the secret comes in a form of "file" and not in a text format.
So if you need to store a secret certificate, like "PKCS 12" (used by Apple), you can't do that here even though the file size is only about 3.19 KB.

The encryption part is easy as the file is a blob which will be converted to bytes and encrypted.

The UI could be like an attachment to a note. So each note could have a several files attached.
This way you can provide some description, for example - "These are my apple dev. certificates".

The only issue is that the single note size limit (8KB) will be shared with all files in the note, including the note. But there is not much I could do about that anyway...