VFDecrypt (“VileFault Decrypt”) is a program originally intended to decrypt FileVault-encrypted images. It is capable of decrypting the root filesystem image of iOS, with the appropriate key. The original program was written by Jacob Appelbaum (ioerror) and released at 23c3 2006.
FileVault is a disk encryption program in Mac OS X 10.3 (2003) and later. It performs on-the-fly encryption with volumes on Mac computers.
Jacob Appelbaum (born 1 April 1983) is an American independent journalist, computer security researcher, artist, and hacker. He studied at the Eindhoven University of Technology and was formerly a core member of the Tor project, a free software network designed to provide online anonymity. Appelbaum is also known for representing WikiLeaks.