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- Committer: Björn Påhlsson
- Date: 2007-10-28 17:59:38 UTC
- Revision ID: belorn@tower-20071028175938-26b85eaa85b84771
Working client and server and password system
- files added:
- bad-ca.pem
- files removed:
- .bzrignore
- plugins.d
- files modified:
- Makefile
added
removed
mandos-keygen
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#!/bin/sh -e
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#
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# Mandos key generator - create a new OpenPGP key for a Mandos client
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#
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# Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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#
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VERSION="1.0"
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KEYDIR="/etc/mandos"
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KEYTYPE=DSA
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KEYLENGTH=2048
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SUBKEYTYPE=ELG-E
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SUBKEYLENGTH=2048
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KEYNAME="`hostname --fqdn`"
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KEYEMAIL=""
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KEYCOMMENT="Mandos client key"
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KEYEXPIRE=0
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FORCE=no
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KEYCOMMENT_ORIG="$KEYCOMMENT"
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mode=keygen
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# Parse options
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TEMP=`getopt --options vhd:t:l:n:e:c:x:f \
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--longoptions version,help,password,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force \
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--name "$0" -- "$@"`
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help(){
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basename="`basename $0`"
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cat <<EOF
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Usage: $basename [ -v | --version ]
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$basename [ -h | --help ]
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Key creation:
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$basename [ OPTIONS ]
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Encrypted password creation:
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$basename { -p | --password } [ --name NAME ] [ --dir DIR]
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Key creation options:
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-v, --version Show program's version number and exit
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-h, --help Show this help message and exit
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-d DIR, --dir DIR Target directory for key files
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-t TYPE, --type TYPE Key type. Default is DSA.
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-l BITS, --length BITS
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Key length in bits. Default is 2048.
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-s TYPE, --subtype TYPE
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Subkey type. Default is ELG-E.
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-L BITS, --sublength BITS
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Subkey length in bits. Default is 2048.
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-n NAME, --name NAME Name of key. Default is the FQDN.
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-e ADDRESS, --email ADDRESS
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Email address of key. Default is empty.
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-c COMMENT, --comment COMMENT
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Comment field for key. The default value is
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"Mandos client key".
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-x TIME, --expire TIME
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Key expire time. Default is no expiration.
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See gpg(1) for syntax.
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-f, --force Force overwriting old keys.
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Password creation options:
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-p, --password Create an encrypted password using the keys in
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the key directory. All options other than
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--keydir and --name are ignored.
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EOF
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}
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eval set -- "$TEMP"
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while :; do
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case "$1" in
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-p|--password) mode=password; shift;;
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-d|--dir) KEYDIR="$2"; shift 2;;
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-t|--type) KEYTYPE="$2"; shift 2;;
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-s|--subtype) SUBKEYTYPE="$2"; shift 2;;
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-l|--length) KEYLENGTH="$2"; shift 2;;
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-L|--sublength) SUBKEYLENGTH="$2"; shift 2;;
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-n|--name) KEYNAME="$2"; shift 2;;
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-e|--email) KEYEMAIL="$2"; shift 2;;
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-c|--comment) KEYCOMMENT="$2"; shift 2;;
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-x|--expire) KEYEXPIRE="$2"; shift 2;;
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-f|--force) FORCE=yes; shift;;
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-v|--version) echo "$0 $VERSION"; exit;;
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-h|--help) help; exit;;
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--) shift; break;;
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*) echo "Internal error" >&2; exit 1;;
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esac
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done
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if [ "$#" -gt 0 ]; then
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echo "Unknown arguments: '$@'" >&2
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exit 1
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fi
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SECKEYFILE="$KEYDIR/seckey.txt"
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PUBKEYFILE="$KEYDIR/pubkey.txt"
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# Check for some invalid values
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if [ -d "$KEYDIR" ]; then :; else
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echo "$KEYDIR not a directory" >&2
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exit 1
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fi
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if [ -w "$KEYDIR" ]; then :; else
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echo "Directory $KEYDIR not writeable" >&2
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exit 1
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fi
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if [ "$mode" = password -a -e "$KEYDIR/trustdb.gpg.lock" ]; then
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echo "Key directory has locked trustdb; aborting." >&2
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exit 1
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fi
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if [ "$mode" = keygen ]; then
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if [ -z "$KEYTYPE" ]; then
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echo "Empty key type" >&2
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exit 1
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fi
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if [ -z "$KEYNAME" ]; then
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echo "Empty key name" >&2
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exit 1
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fi
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if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
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echo "Invalid key length" >&2
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exit 1
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fi
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if [ -z "$KEYEXPIRE" ]; then
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echo "Empty key expiration" >&2
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exit 1
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fi
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# Make FORCE be 0 or 1
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case "$FORCE" in
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[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
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[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
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esac
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if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ]; } \
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&& [ "$FORCE" -eq 0 ]; then
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echo "Refusing to overwrite old key files; use --force" >&2
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exit 1
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fi
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# Set lines for GnuPG batch file
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if [ -n "$KEYCOMMENT" ]; then
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KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
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fi
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if [ -n "$KEYEMAIL" ]; then
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KEYEMAILLINE="Name-Email: $KEYEMAIL"
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fi
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# Create temporary gpg batch file
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BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
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fi
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if [ "$mode" = password ]; then
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# Create temporary encrypted password file
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SECFILE="`mktemp -t mandos-gpg-secfile.XXXXXXXXXX`"
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fi
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# Create temporary key rings
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SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
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PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"
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if [ "$mode" = password ]; then
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# If a trustdb.gpg file does not already exist, schedule it for
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# deletion when we are done.
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if ! [ -e "$KEYDIR/trustdb.gpg" ]; then
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TRUSTDB="$KEYDIR/trustdb.gpg"
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fi
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fi
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# Remove temporary files on exit
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trap "
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set +e; \
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rm --force $PUBRING ${PUBRING}~ $BATCHFILE $TRUSTDB; \
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shred --remove $SECRING $SECFILE; \
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stty echo; \
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" EXIT
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umask 027
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if [ "$mode" = keygen ]; then
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# Create batch file for GnuPG
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cat >"$BATCHFILE" <<-EOF
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Key-Type: $KEYTYPE
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Key-Length: $KEYLENGTH
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#Key-Usage: encrypt,sign,auth
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Subkey-Type: $SUBKEYTYPE
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Subkey-Length: $SUBKEYLENGTH
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#Subkey-Usage: encrypt,sign,auth
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Name-Real: $KEYNAME
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$KEYCOMMENTLINE
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$KEYEMAILLINE
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Expire-Date: $KEYEXPIRE
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#Preferences: <string>
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#Handle: <no-spaces>
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%pubring $PUBRING
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%secring $SECRING
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%commit
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EOF
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# Generate a new key in the key rings
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gpg --no-random-seed-file --quiet --batch --no-tty \
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--no-default-keyring --no-options --enable-dsa2 \
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--secret-keyring "$SECRING" --keyring "$PUBRING" \
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--gen-key "$BATCHFILE"
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rm --force "$BATCHFILE"
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# Backup any old key files
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if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
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2>/dev/null; then
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shred --remove "$SECKEYFILE"
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fi
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if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
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2>/dev/null; then
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rm --force "$PUBKEYFILE"
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fi
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FILECOMMENT="Mandos client key for $KEYNAME"
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if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
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FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
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fi
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if [ -n "$KEYEMAIL" ]; then
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FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
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fi
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# Export keys from key rings to key files
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gpg --no-random-seed-file --quiet --batch --no-tty --armor \
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--no-default-keyring --no-options --enable-dsa2 \
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--secret-keyring "$SECRING" --keyring "$PUBRING" \
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--export-options export-minimal --comment "$FILECOMMENT" \
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--output "$SECKEYFILE" --export-secret-keys
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gpg --no-random-seed-file --quiet --batch --no-tty --armor \
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--no-default-keyring --no-options --enable-dsa2 \
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--secret-keyring "$SECRING" --keyring "$PUBRING" \
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--export-options export-minimal --comment "$FILECOMMENT" \
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--output "$PUBKEYFILE" --export
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fi
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if [ "$mode" = password ]; then
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# Import keys into temporary key rings
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gpg --no-random-seed-file --quiet --batch --no-tty --armor \
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--no-default-keyring --no-options --enable-dsa2 \
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--homedir "$KEYDIR" --no-permission-warning \
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--secret-keyring "$SECRING" --keyring "$PUBRING" \
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--trust-model always --import "$SECKEYFILE"
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gpg --no-random-seed-file --quiet --batch --no-tty --armor \
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--no-default-keyring --no-options --enable-dsa2 \
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--homedir "$KEYDIR" --no-permission-warning \
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--secret-keyring "$SECRING" --keyring "$PUBRING" \
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--trust-model always --import "$PUBKEYFILE"
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# Get fingerprint of key
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FINGERPRINT="`gpg --no-random-seed-file --quiet --batch --no-tty \
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--armor --no-default-keyring --no-options --enable-dsa2 \
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--homedir \"$KEYDIR\" --no-permission-warning \
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--secret-keyring \"$SECRING\" --keyring \"$PUBRING\" \
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--trust-model always --fingerprint --with-colons \
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| sed -n -e '/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
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test -n "$FINGERPRINT"
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FILECOMMENT="Encrypted password for a Mandos client"
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stty -echo
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echo -n "Enter passphrase: " >&2
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sed -e '1q' \
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| gpg --no-random-seed-file --batch --no-tty --armor \
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--no-default-keyring --no-options --enable-dsa2 \
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--homedir "$KEYDIR" --no-permission-warning \
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--secret-keyring "$SECRING" --keyring "$PUBRING" \
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--trust-model always --encrypt --recipient "$FINGERPRINT" \
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--comment "$FILECOMMENT" \
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> "$SECFILE"
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echo >&2
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stty echo
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cat <<-EOF
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[$KEYNAME]
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host = $KEYNAME
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fingerprint = $FINGERPRINT
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secret =
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EOF
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sed -n -e '
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/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
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/^$/,${
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# Remove 24-bit Radix-64 checksum
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s/=....$//
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# Indent four spaces
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/^[^-]/s/^/ /p
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}
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}' < "$SECFILE"
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fi
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trap - EXIT
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set +e
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# Remove the password file, if any
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if [ -n "$SECFILE" ]; then
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shred --remove "$SECFILE"
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fi
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# Remove the key rings
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shred --remove "$SECRING"
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rm --force "$PUBRING" "${PUBRING}~"
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# Remove the trustdb, if one did not exist when we started
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if [ -n "$TRUSTDB" ]; then
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rm --force "$TRUSTDB"
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fi
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