CERA (2.0)

(c) Copyright 1985,1988 Arthur Melnick

CERA deletes files from a disk or diskette in such a way
that they can not be "undeleted".
The DOS operating system maintains a directory on each disk
or diskette containing information about each file recorded on
that disk. When a file is deleted, its entry in the directory is
deleted and the sectors assigned to that file are "released" so
that they may be overwritten by another file. Until that
happens, however, the information recorded on those sectors is
recoverable through the use of special programs designed for that
purpose.
CERA prevents such deleted data recovery by writing special
data patterns on all of the sectors assigned to the file to be
deleted and only then deleting it by the normal means. The
directory entry is completely cleared so that no information
about the file size or name can later be deduced. The methods
used to accomplish this and the data patterns used to overwrite
the file conform to Department of Defense specification 5220.22-M
CERA may be copied and distributed freely but under no
circumstances may the program or documentation be sold.
The author makes no warranty of any kind, express or
implied, including without limitation, any warranties of
merchantability and/or fitness for a particular purpose. The
author shall not be liable for any damages, whether direct,
indirect, special or consequential arising from a failure of this
program to operate in the manner desired by the user. The author
shall not be liable for any damage to data or property which may
be caused directly or indirectly by use of the program.