See Encryption of Data at Rest and in Transit
Open Dental does not provide technical support for Encryption. For assistance, consult your IT person. The information below is provided as a resource for your IT person to help make encryption decisions. It is not for regular users.
Encrypting File System (EFS) is a low cost, useful technology for encrypting the MySQL folder, or any files that are going to be accessed by a single user (or a limited number of users where it may be practical to add permissions file by file). EFS does not work well for encrypting the A to Z Folders because it does not work well for files shared by multiple users. An easy way to avoid the trouble of setting up EFS for small offices is to use BitLocker Encryption.
EFS has added features with each new Microsoft Operating System, but this base document is where to look for the latest complete document from Microsoft:http://technet.microsoft.com/en-us/library/bb457065.aspx