No, there are no descriptions for that fuses in mentioned application note. There are mentioned, yes, but I’m unable to find their meaning.
This key might be burning in encrypted form,
with decryption performed by boot ROM.
What encryption scheme is used? How does this key affect device operation? How this key is used?
I’m building a flashing scheme where keys are generated and stored on a server and released only as a ready fuse blobs. So the ability to perform somehow secure fuse provision would be beneficial. Fuse names suggest that something like this is already present in Xavier, but unfortunately there is completely no info apart from fuse names and short descriptions.