SSWAP(1)						      General Commands Manual							  SSWAP(1)

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" pre-
       sented 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 MER-
       CHANTABILITY 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)