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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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# Copyright © 2008-2010 Teddy Hogeborn
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# Copyright © 2008-2010 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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# 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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# Contact the authors at <mandos@recompile.se>.
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# Contact the authors at <mandos@fukt.bsnet.se>.
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KEYDIR="/etc/keys/mandos"
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KEYNAME="`hostname --fqdn 2>/dev/null || hostname`"
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KEYCOMMENT="Mandos client key"
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KEYCOMMENT_ORIG="$KEYCOMMENT"
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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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TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:f \
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--longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force \
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--name "$0" -- "$@"`
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basename="`basename "$0"`"
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basename="`basename $0`"
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Usage: $basename [ -v | --version ]
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$basename [ -h | --help ]
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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 RSA.
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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 4096.
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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 RSA.
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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 4096.
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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 TEXT, --comment TEXT
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Comment field for key. The default is empty.
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Comment field for key. The default value is
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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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Encrypt a password from FILE using the key in
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the key directory. All options other than
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--dir and --name are ignored.
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-S, --no-ssh Don't get SSH key or set "checker" option.
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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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-S|--no-ssh) SSH=no; shift;;
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-v|--version) echo "$0 $VERSION"; exit;;
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-h|--help) help; exit;;
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--) shift; break;;
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test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
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shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
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shred --remove \"$RINGDIR\"/sec*;
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test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
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rm --recursive --force \"$RINGDIR\";
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tty --quiet && stty echo; \
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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
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#Subkey-Usage: encrypt,sign,auth
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Name-Real: $KEYNAME
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# Make sure trustdb.gpg exists;
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# this is a workaround for Debian bug #737128
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gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" \
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--import-ownertrust < /dev/null
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# Generate a new key in the key rings
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gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" --trust-model always \
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if [ "$mode" = password ]; then
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[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) SSH=1;;
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[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) SSH=0;;
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if [ $SSH -eq 1 ]; then
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for ssh_keytype in ecdsa-sha2-nistp256 ed25519 rsa; do
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ssh_fingerprint="`ssh-keyscan -t $ssh_keytype localhost 2>/dev/null`"
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if [ $err -ne 0 ]; then
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if [ -n "$ssh_fingerprint" ]; then
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ssh_fingerprint="${ssh_fingerprint#localhost }"
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# Import key into temporary key rings
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gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" --trust-model always --armor \
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# Get fingerprint of key
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FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
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--enable-dsa2 --homedir "$RINGDIR" --trust-model always \
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--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
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--fingerprint --with-colons \
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--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
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FILECOMMENT="Encrypted password for a Mandos client"
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while [ ! -s "$SECFILE" ]; do
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if [ -n "$PASSFILE" ]; then
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if [ -n "$PASSFILE" ]; then
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echo -n "Enter passphrase: " >&2
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first="$(head --lines=1 | tr --delete '\n')"
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echo -n "Repeat passphrase: " >&2
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second="$(head --lines=1 | tr --delete '\n')"
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if [ "$first" != "$second" ]; then
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echo "Passphrase mismatch" >&2
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touch "$RINGDIR"/mismatch
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tty --quiet && stty -echo
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echo -n "Enter passphrase: " >/dev/tty
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tty --quiet && echo >&2
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echo -n "Repeat passphrase: " >/dev/tty
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if [ "$first" != "$second" ]; then
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echo "Passphrase mismatch" >&2
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touch "$RINGDIR"/mismatch
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fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" --trust-model always --armor \
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--encrypt --sign --recipient "$FINGERPRINT" --comment \
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"$FILECOMMENT" > "$SECFILE"
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if [ -e "$RINGDIR"/mismatch ]; then
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rm --force "$RINGDIR"/mismatch
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fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" --trust-model always --armor --encrypt \
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--sign --recipient "$FINGERPRINT" --comment "$FILECOMMENT" \
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if [ -e "$RINGDIR"/mismatch ]; then
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rm --force "$RINGDIR"/mismatch
added
removed
mandos-keygen
