diff --git a/sign.sh b/sign.sh
new file mode 100755
index 0000000..aae358f
--- /dev/null
+++ b/sign.sh
@@ -0,0 +1,210 @@
+#!/bin/sh
+# vi:ts=4:ai
+# $Id$
+#
+# Unterzeichnet Newsartikel mittels PGP
+# Heiko Schlichting (heiko@fu-berlin.de)
+#
+# $Log$
+# Revision 1.1  2003/07/06 18:58:06  eagle
+# Import current version from ftp.isc.org /pub/pgpcontrol.
+#
+# Revision 1.8  1996/08/09 22:25:27  heiko
+# ignore case in headers but keep the right case to sign
+# filter unwanted headerlines
+# sign an already signed article works now
+#
+# Revision 1.7  1996/08/07 19:00:08  heiko
+# SIGNER could contain spaces.
+#
+# Revision 1.6  1996/08/07  18:17:13  lutz
+# SIGNER might be preset. (lutz@as-node.jena.thur.de)
+#
+# Revision 1.5  1996/08/07  01:36:35  heiko
+# Skip articles if not found.
+#
+# Revision 1.4  1996/08/07  01:15:38  heiko
+# Debug statement removed
+#
+# Revision 1.3  1996/08/07  01:14:22  heiko
+# Initial Version
+#
+#
+
+###################### START OF CONFIGURATION SECTION ######################
+
+# Configure pathnames to required programs
+GAWK=/usr/local/bin/gawk
+PGP=/usr/local/bin/pgp
+
+# Who should sign the article?
+if [ -z "$SIGNER" ]; then
+	SIGNER="de.admin.news.announce"
+fi
+
+
+# STORING YOUR PASS PHRASE IN A FILE IS A SECURITY HOLE!
+# If you don't define PGPPASSFILE, you can use this script interactively.
+PGPPASSFILE=""
+
+####################### END OF CONFIGURATION SECTION #######################
+
+PRG=$0
+
+check()
+{
+	if [ ! -x $1 ]; then
+		echo "Required executable $1 not found."
+		echo "You should configure $PRG."
+		exit 2
+	fi
+}
+
+# Usage message
+if [ $# -eq 0 ]; then
+	echo "Usage: $PRG article ..."
+	exit 1
+fi
+
+# Are the executables available?
+for EXE in $GAWK $PGP;
+do
+	check "$EXE"
+done
+
+if [ ! -z "$PGPPASSFILE" -a -f "$PGPPASSFILE" ];
+then
+	PGPPASS=`cat "$PGPPASSFILE"`
+	export PGPPASS
+fi
+
+while [ $# -gt 0 ]; do
+	article=$1
+	if [ ! -f ${article} ]; then
+		echo "${article}: not found - skipped"
+		shift
+		continue
+	fi
+	rm -f ${article}.new
+	trap "rm -f ${article}.new; exit 0" 0 1 2 3 15
+	$GAWK -F: '
+		BEGIN{
+			# Which headers should be signed?
+			headernames="Subject:Control:Message-ID:Date:From:Sender:Newsgroups:Approved:Followup-To"
+			split(headernames,header)
+			IGNORECASE=1
+			body=0
+			i=0
+			last=0
+		}
+
+		# After processing the header, print it
+		!NF&&!body{
+			body=1
+			print "X-Signed-Headers:",sig
+			for (h=0; h < i; h++) {
+				print ph[h]
+			}
+		}
+
+		# Article body
+		body{print;next}
+
+		# For continuation header lines
+		$0~/^[ \t]/ {
+			if (last==1) {
+				ph[i-1]=ph[i-1]"\n"$0
+			}
+			next
+		}
+
+		# Normal header lines
+		{
+			for (h in header) {
+				if (match($1,"^"header[h]"$")){
+					ph[i]=$0
+					if (i) {
+						sig=sig","$1
+					}else{
+						sig=$1
+					}
+					i++
+					last=1
+					next
+				}else{
+					last=0
+				}
+			}
+		}
+	' $article | $PGP -fast -u "$SIGNER" +verbose=0 +language="en" | 
+	$GAWK -v artfile="$article" '
+		BEGIN{
+			body=0
+			skip=0
+			version="unknown"
+			# Which header should be filtered?
+			filternames="X-PGP-Sig:NNTP-Posting-Host:NNTP-Posting-User:Path:To:Cc:X-Access:Lines:X-Newsreader"
+			split(filternames,filter,":")
+			IGNORECASE=1
+			while ((getline header < artfile) >0) {
+				if (length(header)>0) {
+					if (skip && match(header,/^[ \t]/)){
+						continue
+					}
+					skip=0
+					for (f in filter) {
+						if (match(header,"^"filter[f]":[ \t]")){
+							skip=1
+						}
+					}
+					if (!skip) {
+						print header
+					}
+				} else {
+				break
+				}
+			}
+			IGNORECASE=0
+		}
+		$1~/^X-Signed-Headers:/&&!body{
+			sig=$2
+			next
+		}
+		$0~/^-----BEGIN PGP SIGNATURE-----$/{
+			body=1
+			next
+		}
+		$0~/^Version:/&&(body==1){
+			version=$2
+			next
+		}
+		$0~/^-----END PGP SIGNATURE-----$/{
+			body=0
+			next
+		}
+		!NF&&(body==1){
+			body=2
+			print "X-PGP-Sig:",version,sig
+			next
+		}
+		body==2{
+			print "\t"$0
+		}
+		END{
+			print ""
+			while ((getline < artfile) >0) {
+				print $0
+			}
+			close (artfile)
+		}
+	' > ${article}.new
+	if [ -s ${article}.new ]; then
+		mv ${article} ${article}.bak
+		mv ${article}.new $article
+		echo "${article}: ok"
+	else
+		echo "${article}: FAILED"
+		rm -f ${article}.new
+	fi
+	shift
+done