Im having a hard time understanding the TrueCrypt limitation(s) on sharing encrypted files amongst multiple users that all have access to a shared network hard drive (the dive has a common drive letter mapped to each User PC).
We have a small office network comprised of a router, User 1 PC (XP Pro), User 2 PC (XP Pro), User 3 PC (XP Pro), and a network hard drive. Everything is stored on the network hard drive and nothing is stored on the User 1, the User 2, or the User 3 PC.
In terms of workflow, we routinely generate a series of updated materials for Customer A, Customer B, Customer C, etc. The updating process requires verbal (but not electronic) collaboration amongst each of the Users. For example, User 1 opens a file, makes updates, closes the file, and then verbally informs User 2 that the file is ready for User 2 inputs. User 2 opens the file, makes changes, closes the file, and then informs User 3 that the file is ready for their inputs.
Each customer has a unique folder containing a set of sub-folders and each sub-folder is comprised of multiple files. When updates are being made, Users 1, 2 and 3 are working on multiple customer folders in the same span of time but *never* on the same file at the same time.
What I would like to do: 1) create a single TrueCrypt combined-customer folder on the mapped hard drive that contains all of our customer folders, sub-folders and files; 2) allow each User to have simultaneous access to the TrueCrypt combined-customer folder (for making sequential but *not* simultaneous changes to individual files).
With the usage scenario described above, Im concerned about the potential for file corruption based on what Ive read on Experts-Exchange as well as the TrueCrypt knowledge base.
In terms of what Im trying to protect against, please: 1) compromise of customer data should the network hard drive ever be physically removed from the office and 2) compromise of customer data whenever the TrueCrypt combined-customer folder is not in use and is un-mounted.