1. A system for assuring the integrity of information files, comprising: a first server having a storage memory for storing information files and an associated manifest file containing a manifest entry for each of the stored information files, the first server configured to provide the information files and the associated manifest file on an output; a manifest transfer engine having an input coupled to the output of the first server and configured to receive the manifest file and at least one of the information files from the first server, the manifest transfer engine having an output and further configured to compare an identifying characteristic of each received information file with the manifest entries in the manifest file and, only if there is a match between the identifying characteristic and a manifest entry in the manifest file, transfer the associated at least one information file on the output as an authenticated information file; and a second server configured to receive the authenticated information file from the manifest transfer engine, to generate an associated manifest entry for the received authenticated information file based on an identifying characteristic thereof and to store the associated manifest entry in an updated manifest file.