Changing the permissions of the restored files would be easy enough to do. But before we do that may I ask a couple of questions?
The files you restored, are they just documents, music, pictures, videos, etc. Or did you completely restore your entire home folder including the hidden files and folders?
Who currently owns the restored files with the padlock icons on them, root or a user from your last installation?
I have been searching on-line and have found a couple of methods which
might work, although I haven’t tried them yet.
However, to answer your questions:
The answer is somewhere in between. I restored all my documents,
music, pictures and videos PLUS the “.thunderbird” (hidden) folder.
The files and the folders with the padlocks are now owned by “root”
where they used to belong to me in the last installation. There are
no other users on this box.
It’s possible that sudo was used in copying the files. That would result in the files being owned by root even within your home folder. Change the owner of your home folders and files back to your user name from the terminal with:
@Spyder has given you the correct solution, and the same as I was going to recommend. My only concern was what exactly you restored, and who owned them. But according to your response, sudo chown -R jane:jane /home/jane should work nicely.