#!/bin/bash
#
# A script that generates PGP/GPG keys and saves them to a file.
# Copyright (C) 2009 Bogdan 'bogdro' Drozdowski <bogdandr@op.pl>
#
#
# Usage: bash pgpgen-bash.sh [name]
#  name - an optional filename for the keys to output.
#

# 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; either version 3
# of the License, or (at your option) any later version.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foudation:
#		Free Software Foundation
#		51 Franklin Street, Fifth Floor
#		Boston, MA 02110-1301
#		USA

name=

if ( test "x$1" != "x" ); then

	name=$1
else

	for ((i=0; i<4000000000; i++)); do

		if [ ! -e pgp$i-priv.asc ]; then break; fi
	done
	name=pgp$i;
fi

gpg --gen-key
# get the newest key's ID number (field 6 is the date, field 5 is the key ID):
id=`gpg --list-keys --with-colons | egrep '^pub' | sed 's/:/ /g' | sort -k 6,6 | awk '{print $5}' | tail -1`
# export the key:
gpg --output $name-priv.asc --textmode --export-secret-keys --armor $id && \
gpg --output $name-pub.asc --textmode --export --armor $id && \
zip $name-keys $name-priv.asc $name-pub.asc && \
gpg --delete-secret-and-public-key $id