Bootable CD to Generate Hash Set

I vaguely recall hearing of a customized bootable CD (I can't even recall if it was based on Linux on Bart-PE), whose sole purpose was to generate a hash list (again, not sure of the format - maybe hashkeeper, maybe even EnCase…can't recall) of all the files on the system. It's main purpose being to create hashes of golden images.

I know there are plenty of ways to accomplish this and I know I could make my own linux distro with a customized script, but that's not what I want - just the name/link for this particular bootable CD if anyone knows what I'm referring to. Thanks!

Jeff