I need a solution that will allow me to send a Word document and many pdf documents to a third party either via DVD or some type of FTP. Then I need to allow access for 7-14 days, during which they will have the ability to edit and save the Office documents. After the expiration, I need the files to re-encrypt or otherwise become unusable.
I see a few IRM type products such as Liquid Machines, EMC but they appear to be aimed at an enterprise level, ie big $$$. Is there a solution that would be realistic for a very small company?
Alternatively, is there a service where I could keep these files locally and allow access via the internet? My concern is the size and number of pdf documents which could easily number several hundred files.