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#!/bin/sh
#
# script to generate a keyfile that is encrypted with openssl
#
# Written 2005 by Markus Nass <generalstone@gmx.net>
# Improved 2006 by Jonas Meurer <jonas@freesources.org>
# Further improved 2006 by Markus Nass <generalstone@gmx.net>
usage() {
echo "Usage: $0 <key>"
exit 1
}
if [ "$1" = "" -o "$1" = "-h" -o "$1" = "--help" ]; then
usage
fi
if [ -x /usr/bin/openssl ]; then
key=`tempfile`
dd if=/dev/random of=$key bs=1c count=256
openssl enc -aes-256-cbc -e -salt -in $key -out $1
#rm -f $key; key=""
shred -uz $key; key=""
else
echo "/usr/bin/openssl is not available" && exit 1
fi