IXimager file formats
ILook Investigator v8 and its disk-imaging counterpart, IXimager, offer three proprietary, authenticated image formats: compressed (IDIF), non-compressed (IRBF), and encrypted (IEIF). Although few technical details are disclosed publicly, IXimager's online documentation provides some insights: IDIF "includes protective mechanisms to detect changes from the source image entity to the output form" and supports "logging of user actions within the confines of that event;" IRBF is similar to IDIF except that disk images are left uncompressed; IEIF, meanwhile, encrypts said images.
For compatibility with ILook Investigator v7 and other forensic tools, IXimager allows for the transformation of each of these formats into raw format.
The header for these image formats appears to contain the string: