Plugin to upload specific files for user

I need a wp plugin such that I can upload files for specific users. For example I have 10 registered users on my site. I want to upload 20 different files to my server, associating each file to a specific user only. Each user should be able to view files associated to him only, not any one else.

As an admin, I should be able to add/remove files from each user account. Is there any plugin available for this requirement?