Backup of Windows Encrypted Files
Creation Date: March 26, 2008
Revision Date: March 26, 2008
Product: DS‑Client (Windows)
Summary
When DS-Client encounters “Windows encrypted” files on a Windows source machine, DS-Client uses a different Microsoft API to back them up. “Windows encrypted” refers to files encrypted using the Windows File System encryption.
• DS-Client will receive the data in its encrypted format, and it will encrypt it again and compress it, then send it to DS-System.
• The master/delta algorithm is still invoked; however, the delta file size will be close (in terms of size) to the master file’s size.
During restores, DS-Client will retrieve the data from DS-System, decrypt the data from the DS-Client encryption, and then save it to the destination machine (in Windows Encrypted form). The restored files remain encrypted. Windows will manage and decrypt them at that point (i.e. you cannot restore them on FAT, etc.).