File Vault...

[lidds]

I want to add a file fault system to my application that allows the user to select a file and then this file is stored within the vault. The only thing is that I need these files to completely secure e.g. the files can not be deleted, renamed or modified by anyone outside of my application. The reason for this is that I have have to be 100% positive that these files have not been tampered with as these will be used to provide audit and legal uses.

I therefore am unable to use standard security accounts within Windows as obviously people can create accounts and modify folder properties.

I am unable to save these files into a database as some of the files maybe as large as 500 Meg. I was therefore need another method to do this, would a private virtual drive be a solution. Howver I know nothing about this and if this file can be password protected?

I know there is a lot of file and folder locking software would there but obviously I need to include this into my app and also I do not know how this software works.

Any advise would be really appreshiated.

[sapator]

I don't think you can do anything with .net . If i am the admin then i can delete your file.Simple.
I have never used locking software so i cannot help you.My advice is to take backup of the vault every day.

[DramaQueen]

You could always open a stream to those files and not close it, until you want to release them from the 'vault'.

'"Lock the file
Dim sw as new io.streamwriter(file)
 
'"Unlock the file
sw.Close()

Not sure if thats a good idea or a very bad one, just the first thing that came me to my mind.

[sapator]

Well the fact is that the files can get deleted once saved.