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# Mandos key generator - create new keys for a Mandos client
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# Copyright © 2008-2019 Teddy Hogeborn
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# Copyright © 2008-2019 Björn Påhlsson
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# This file is part of Mandos.
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# Mandos is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# Mandos key generator - create a new OpenPGP key for a Mandos client
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# Copyright © 2008-2017 Teddy Hogeborn
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# Copyright © 2008-2017 Björn Påhlsson
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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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# Mandos is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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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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# You should have received a copy of the GNU General Public License
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# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Contact the authors at <mandos@recompile.se>.
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KEYDIR="/etc/keys/mandos"
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TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:T:fS \
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--longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,tls-keytype:,force,no-ssh \
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TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:fS \
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--longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force,no-ssh \
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--name "$0" -- "$@"`
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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 OpenPGP key type. Default is RSA.
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-t TYPE, --type TYPE Key type. Default is RSA.
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-l BITS, --length BITS
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OpenPGP key length in bits. Default is 4096.
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Key length in bits. Default is 4096.
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-s TYPE, --subtype TYPE
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OpenPGP subkey type. Default is RSA.
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Subkey type. Default is RSA.
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-L BITS, --sublength BITS
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OpenPGP subkey length in bits. Default 4096.
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Subkey length in bits. Default is 4096.
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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 OpenPGP key. Default empty.
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Email address of key. Default is empty.
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-c TEXT, --comment TEXT
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Comment field for OpenPGP key. Default empty.
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Comment field for key. The default is empty.
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-x TIME, --expire TIME
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OpenPGP key expire time. Default is none.
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Key expire time. Default is no expiration.
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See gpg(1) for syntax.
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-T TYPE, --tls-keytype TYPE
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TLS key type. Default is ed25519.
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-f, --force Force overwriting old key files.
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Password creation options:
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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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-T|--tls-keytype) TLS_KEYTYPE="$2"; shift 2;;
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-f|--force) FORCE=yes; shift;;
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-S|--no-ssh) SSH=no; shift;;
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-v|--version) echo "$0 $VERSION"; exit;;
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SECKEYFILE="$KEYDIR/seckey.txt"
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PUBKEYFILE="$KEYDIR/pubkey.txt"
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TLS_PRIVKEYFILE="$KEYDIR/tls-privkey.pem"
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TLS_PUBKEYFILE="$KEYDIR/tls-pubkey.pem"
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# Check for some invalid values
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if [ ! -d "$KEYDIR" ]; then
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[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
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if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ] \
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|| [ -e "$TLS_PRIVKEYFILE" ] \
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|| [ -e "$TLS_PUBKEYFILE" ]; } \
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&& [ "$FORCE" -eq 0 ]; then
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if [ \( -e "$SECKEYFILE" -o -e "$PUBKEYFILE" \) \
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-a "$FORCE" -eq 0 ]; then
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echo "Refusing to overwrite old key files; use --force" >&2
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test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
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test -n \"$TLS_PRIVKEYTMP\" && shred --remove \"$TLS_PRIVKEYTMP\"; \
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shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
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test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
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rm --recursive --force \"$RINGDIR\";
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echo -n "Started: "
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# Generate TLS private key
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if certtool --generate-privkey --password='' \
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--outfile "$TLS_PRIVKEYTMP" --sec-param ultra \
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--key-type="$TLS_KEYTYPE" --pkcs8 --no-text 2>/dev/null; then
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# Backup any old key files
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if cp --backup=numbered --force "$TLS_PRIVKEYFILE" "$TLS_PRIVKEYFILE" \
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shred --remove "$TLS_PRIVKEYFILE"
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if cp --backup=numbered --force "$TLS_PUBKEYFILE" "$TLS_PUBKEYFILE" \
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rm --force "$TLS_PUBKEYFILE"
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cp --archive "$TLS_PRIVKEYTMP" "$TLS_PRIVKEYFILE"
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shred --remove "$TLS_PRIVKEYTMP"
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# First try certtool from GnuTLS
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if ! certtool --password='' --load-privkey="$TLS_PRIVKEYFILE" \
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--outfile="$TLS_PUBKEYFILE" --pubkey-info --no-text \
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# Otherwise try OpenSSL
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if ! openssl pkey -in "$TLS_PRIVKEYFILE" \
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-out "$TLS_PUBKEYFILE" -pubout; then
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rm --force "$TLS_PUBKEYFILE"
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# None of the commands succeded; give up
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# Make sure trustdb.gpg exists;
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# this is a workaround for Debian bug #737128
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test -n "$FINGERPRINT"
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if [ -r "$TLS_PUBKEYFILE" ]; then
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KEY_ID="$(certtool --key-id --hash=sha256 \
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--infile="$TLS_PUBKEYFILE" 2>/dev/null || :)"
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if [ -z "$KEY_ID" ]; then
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KEY_ID=$(openssl pkey -pubin -in "$TLS_PUBKEYFILE" \
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| sed --expression='s/^.*[^[:xdigit:]]//')
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FILECOMMENT="Encrypted password for a Mandos client"
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while [ ! -s "$SECFILE" ]; do
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mandos-keygen
