i would like to provide a dedicated space on a network drive where files can be encrypted and only a limited group of users (configurable per file or subdir) are able to read them. I already thought of using TrueCrypt, but I guess that this can support concurrent access via network...
I am working in a Microsoft Windows Active Directory environment.
If A wants to securely share files with B and C, only A, B, and C should be able to access those files. Noone else (not even system administrators) should be able to read the files. (Of course, if certificate, key and/or passwords are lost, the files won't be recoverable. That's a risk we would like to take...)
Any ideas on how to get that done?