Restrict Edting Pages based on Category

I also have this question. I need to restrict which pages certain users can edit. I was hoping that once I put those pages in certain categories and restrict the users’ access to those categories, they would only be able to edit those pages. But this has not happened — all that happened is that the users are restricted in which categories they can edit. This is not so useful. Do you have an answer? Thank you.

I too would like the same functionality for pages as for posts, i.e. that pages not in the restricted category are hidden and uneditable.