Create a key file with menu

Launch KeyFileMaker (Start > Program Files (x86) > StorageCraft > ImageManager > KeyFileMaker.exe).
In the KeyFileMaker dialog box, provide the following information, then click Create Key File.

Set Password

Specify and confirm the password to store in the Key File.

Save Key File As

Specify the name and location for the Key File. You must save the Key File in the same folder with the associated backup image files.

Key File Association

Specify the backup Image Set to be associated with this Key File.

Generic Key File: The key file is not associated with any backup image set. Select Generic Key File if all the backup image files in a given folder are part of the same image set.
Key File associated with a specific GUID: Select this option if you have multiple backup image sets in the same directory and you want to manually specify the File Set GUID (Globally Unique ID) for the image set associated with this Key File. You can locate this GUID if you:

Extracted the File Set GUID from one of the set's image file header information. (All backup image files in an image set share the same File Set GUID.)
Viewed the File Set GUID by starting to mount an image file from the relevant set with the Mount wizard (in Windows Explorer). Locate the GUID in the File set GUID field on the Image File Name page.

Key File associated with a specified backup image: Browse to an image file in the set you want associated with this Key File. The tool automatically extracts the GUID for use in creating the Key File.