Data Assurance in a Conventional File System

In the introductory part, this paper defines the general environment for this research and defines the terms of interest. Then we define the research problem: How to find a mechanism that guarantees that a file stored in a conventional file system, on disk, has not been modified; this problem is important because it enables security of the imperceptible changing of data, which is the main problem with digital data acquisition. Existing solutions to the problem are briefly surveyed in the third part, and their drawbacks are underlined; each surveyed piece of research is analysed according to the same template. Then, the essence of the proposed solution is presented: Our proposal is a smart card based Digital Sealed File System (DSFS). The conclusion is from the point of view of performance/complexity ratio.