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[CODE] Signing Web Pages



Here's a quick script I hacked together in the last few minutes to sign 
web pages.  Very simple-minded, it nonetheless does the job.  If you want 
to see how it looks in action, visit http://dal1820.computek.net

#! /bin/sh
#
# signit - use PGP to sign a web page
# Written 02/08/96 by Ed Carp ([email protected])
#
# This could conceptually be used to sign (and optionally verify)
# shell scripts, etc.  The possibilities are endless...
#

#
# Set up some variables...
#

# Change this if you're so inclined...
PGPHELP="http:\/\/www.yahoo.com\/Computers\/Security_and_Encryption"

# Look for a line that starts like this...
LOOKFOR="This web page has been signed with"
ADDLINE="$LOOKFOR <A HREF=$PGPHELP>PGP<\/A>.  To see the digital signature, click <A HREF=$1.asc.html>here<\/A>."

#
# First, we need to make sure that the page hasn't already been signed...
#

F=`grep "^$LOOKFOR" $1|wc -l`
F="`echo $F`"
# If it hasn't already been signed, add signature line
if [ "$F" = "0" ]; then
	echo Adding PGP signature HTML to document
	echo "s/<\/BODY>/$ADDLINE<\/BODY>/g" > $1.temp.$$
	echo "s/<\/body>/$ADDLINE<\/body>/g" >> $1.temp.$$
	sed -f $1.temp.$$ < $1 > $1.$$
	rm -f $1.temp.$$
	mv $1.$$ $1
fi
pgp -asb $1
# Add rudimentary HTML
echo "<HTML><HEAD><TITLE>PGP Digital Signature of $1</TITLE></HEAD>" > $1.$$
echo "<BODY><I>PGP Digital Signature generated `date`</I><HR><PRE>" >> $1.$$
cat $1.asc >> $1.$$
echo "</PRE></BODY></HTML>" >> $1.$$
mv $1.$$ $1.asc.html
rm $1.asc
echo Done.
--
Ed Carp, N7EKG    			[email protected], [email protected]
					214/993-3935 voicemail/digital pager
					800/558-3408 SkyPager
Finger [email protected] for PGP 2.5 public key		[email protected]

"Past the wounds of childhood, past the fallen dreams and the broken families,
through the hurt and the loss and the agony only the night ever hears, is a
waiting soul.  Patient, permanent, abundant, it opens its infinite heart and
asks only one thing of you ... 'Remember who it is you really are.'"

                    -- "Losing Your Mind", Karen Alexander and Rick Boyes

The mark of a good conspiracy theory is its untestability.
		    -- Andrew Spring
----------------------------------------------------------------------
According to the Communications Decency Act, these are the words you may
no longer use in your Internet correspondence:  Shit, piss, fuck, cunt,
cock-sucker, mother-fucker and tits. The use of shit, piss, fuck, cunt,
cock-sucker, mother-fucker and tits, may now earn you a substantial fine
as well as possible jail time, should President Clinton sign this Bill
into law.  Please refrain from using shit, piss, fuck, cunt, cock-sucker,
mother-fucker and tits, to protect your children as well as others, from
their evil influence, thus keeping America "ideologically pure".