DATA DELETION METHOD AND DATA DELETION PROGRAM

摘要

[PROBLEMS] To provide a novel data deletion method and a data deletion program capable of deleting data in a short time without applying a load on a computer CPU or the like. [MEANS FOR SOLVING PROBLEMS] A data deletion program includes: a step for identifying a data file of data d to be deleted; a step for overwriting a random number at arbitrary plural positions in the data d; a step for rewriting file size information contained in file management information on the data file of the data d to "0" so as to change the file size of the data file; and a step for recording deletion information in the file management information on the data file of the data d and deleting the data file from the file system.