Provided by: secure-delete_3.1-5_i386 bug

NAME

       sswap - secure swap wiper (secure_deletion toolkit)

SYNOPSIS

       sswap [-f] [-l] [-l] [-v] [-z] swapdevice

DESCRIPTION

       sswap  is designed to delete data which may lie still on your swapspace
       in  a  secure  manner  which  can  not  be  recovered  by  thiefs,  law
       enforcement or other threats.  The wipe algorythm is based on the paper
       "Secure  Deletion  of  Data  from  Magnetic  and  Solid-State   Memory"
       presented at the 6th Usenix Security Symposium by Peter Gutmann, one of
       the leading civilian cryptographers.

       The secure data deletion process of sswap goes like this:

       *      1 pass with 0xff

       *      5 random passes. /dev/urandom  is  used  for  a  secure  RNG  if
              available.

       *      27 passes with special values defined by Peter Gutmann.

       *      5  random  passes.  /dev/urandom  is  used  for  a secure RNG if
              available.

COMMANDLINE OPTIONS

       -f     fast (and insecure mode): no /dev/urandom, no synchronize  mode.

       -l     lessens the security. Only two passes are written: one mode with
              0xff and a final mode with random values.

       -l     -l for a second time lessons the security even  more:  only  one
              pass with random values is written.

       -v     verbose mode

       -z     wipes the last write with zeros instead of random data

BEWARE

       swapoff
              unmount  your  swapspace  before using this tool! Otherwise your
              system might crash!

       BETA!  sswap is still beta. It was only tested on  Linux  but  on  this
              system it performed it’s work all of the time.

BUGS

       No  bugs.  There  was  never  a  bug in the secure_deletion package (in
       contrast to my other tools, whew, good luck ;-) Send me  any  that  you
       find.  Patches are nice too :)

AUTHOR

       van Hauser / THC <vh@thc.org>

DISTRIBUTION

       The  newest version of the secure_deletion package can be obtained from
       http://www.thc.org

       sswap and the secure_deletion package is (C) 1997-2003 by van Hauser  /
       THC (vh@thc.org)

       This program is free software; you can redistribute it and/or modify it
       under the terms of the GNU General Public License as published  by  the
       Free Software Foundation; Version 2.

       This  program  is  distributed  in the hope that it will be useful, but
       WITHOUT  ANY  WARRANTY;  without   even   the   implied   warranty   of
       MERCHANTABILITY  or  FITNESS  FOR  A  PARTICULAR  PURPOSE.  See the GNU
       General Public License for more details.

SEE ALSO

       srm (1), sfill (1), sdmem (1)

                                                                      SSWAP(1)