Data hiding based on disk slack space
Jiang Zi-fen · Jisuanji yingyong yanjiu · 2014
For protecting sensitive data stored on computer disks,this paper presented a data hiding method based on disk slack space. Based on analyzing disk partitioning scheme and file management mechanism of cluster-based file system,it made dispersed file-cluster slack spaces organic combination to store sensitive data,and maintained data which was used to restore the original data by using data structure which was stored in partitioning-scheme slack spaces. Experimental results show that data hiding method based on disk slack space does not take up the file system effective space,has characteristics of high concealment,low system overhead,positive correlation between hiding capacity and overall number of files within file system,and anti-interference performance is susceptible to the stability of host files. Moreover,hiding capacity will be very considerable when overall number of files is large,and anti-interference performance can be improved by selecting host files with good stability.