VIRTUAL FILE-BASED TAMPER RESISTANT REPOSITORY

A technique adds virtual file anchoring functionality to a platform by mounting a virtual file system (“system”) to store an anchor file. Binary code to create and run the system is embedded into a trusted application's binary code. Thus, whenever the trusted application executes, the embedded code ensures the system is validated and started or restarted as required. To interrogate the existence of the anchor, it can be read like any other file. To modify the status of the anchor, the name of the associated file is decorated such that instead of modifying the file, foo, the trusted application modifies a pseudo-file, foo#decoration. The decoration varies for each modification operation. To generate the decoration, the algorithm takes as input a time component, e.g. in the form of the last accessed time field of the parent directory where the secure file anchors files reside, and the name of the anchor.