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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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KEYNAME="`hostname --fqdn`"
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KEYCOMMENT="Mandos client key"
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KEYCOMMENT_ORIG="$KEYCOMMENT"
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if [ ! -d "$KEYDIR" ]; then
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KEYDIR="/etc/mandos/keys"
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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 vhd:t:l:n:e:c:x:f \
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--longoptions version,help,dir:,type:,length:,name:,email:,comment:,expire:,force \
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--name "$0" -- "$@"`
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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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Encrypted password creation:
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$basename { -p | --password } [ --name NAME ] [ --dir DIR]
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$basename { -F | --passfile } FILE [ --name NAME ] [ --dir DIR]
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Usage: `basename $0` [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 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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-s TYPE, --subtype TYPE
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Subkey type. Default is RSA.
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-L BITS, --sublength BITS
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Subkey length in bits. Default is 4096.
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Key length in bits. Default is 1024.
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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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-e EMAIL, --email EMAIL
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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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-c COMMENT, --comment COMMENT
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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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-f, --force Force overwriting old key files.
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Password creation options:
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-p, --password Create an encrypted password 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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-F FILE, --passfile FILE
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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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-f, --force Force overwriting old keys.
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eval set -- "$TEMP"
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-p|--password) mode=password; shift;;
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-F|--passfile) mode=password; PASSFILE="$2"; shift 2;;
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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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-S|--no-ssh) SSH=no; shift;;
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-v|--version) echo "$0 $VERSION"; exit;;
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-h|--help) help; exit;;
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--) shift; break;;
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PUBKEYFILE="$KEYDIR/pubkey.txt"
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# Check for some invalid values
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if [ ! -d "$KEYDIR" ]; then
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if [ -d "$KEYDIR" ]; then :; else
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echo "$KEYDIR not a directory" >&2
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if [ ! -r "$KEYDIR" ]; then
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echo "Directory $KEYDIR not readable" >&2
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if [ "$mode" = keygen ]; then
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if [ ! -w "$KEYDIR" ]; then
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echo "Directory $KEYDIR not writeable" >&2
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if [ -z "$KEYTYPE" ]; then
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echo "Empty key type" >&2
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if [ -z "$KEYNAME" ]; then
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echo "Empty key name" >&2
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if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
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echo "Invalid key length" >&2
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if [ -z "$KEYEXPIRE" ]; then
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echo "Empty key expiration" >&2
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# Make FORCE be 0 or 1
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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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if [ \( -e "$SECKEYFILE" -o -e "$PUBKEYFILE" \) \
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-a "$FORCE" -eq 0 ]; then
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echo "Refusing to overwrite old key files; use --force" >&2
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# Set lines for GnuPG batch file
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if [ -n "$KEYCOMMENT" ]; then
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KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
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if [ -n "$KEYEMAIL" ]; then
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KEYEMAILLINE="Name-Email: $KEYEMAIL"
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# Create temporary gpg batch file
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BATCHFILE="`mktemp -t mandos-keygen-batch.XXXXXXXXXX`"
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if [ "$mode" = password ]; then
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# Create temporary encrypted password file
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SECFILE="`mktemp -t mandos-keygen-secfile.XXXXXXXXXX`"
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# Create temporary key ring directory
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RINGDIR="`mktemp -d -t mandos-keygen-keyrings.XXXXXXXXXX`"
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if [ -w "$KEYDIR" ]; then :; else
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echo "Directory $KEYDIR not writeable" >&2
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if [ -z "$KEYTYPE" ]; then
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echo "Empty key type" >&2
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if [ -z "$KEYNAME" ]; then
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echo "Empty key name" >&2
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if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
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echo "Invalid key length" >&2
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if [ -z "$KEYEXPIRE" ]; then
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echo "Empty key expiration" >&2
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# Make FORCE be 0 or 1
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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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if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ]; } \
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&& [ "$FORCE" -eq 0 ]; then
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echo "Refusing to overwrite old key files; use --force" >&2
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# Set lines for GnuPG batch file
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if [ -n "$KEYCOMMENT" ]; then
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KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
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if [ -n "$KEYEMAIL" ]; then
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KEYEMAILLINE="Name-Email: $KEYEMAIL"
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BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
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SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
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PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"
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# Remove temporary files on exit
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test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
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shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
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test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
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rm --recursive --force \"$RINGDIR\";
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tty --quiet && stty echo; \
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if [ "$mode" = keygen ]; then
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# Create batch file for GnuPG
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cat >"$BATCHFILE" <<-EOF
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Key-Length: $KEYLENGTH
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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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Expire-Date: $KEYEXPIRE
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#Preferences: <string>
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#%pubring pubring.gpg
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#%secring secring.gpg
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Note: Due to entropy requirements, key generation could take
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anything from a few minutes to SEVERAL HOURS. Please be
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patient and/or supply the system with more entropy if needed.
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# Make sure trustdb.gpg exists;
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# this is a workaround for Debian bug #737128
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gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$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 "$RINGDIR" --trust-model always \
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--gen-key "$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" "$SECKEYFILE" \
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shred --remove "$SECKEYFILE"
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if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
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rm --force "$PUBKEYFILE"
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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 ($KEYCOMMENT)"
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if [ -n "$KEYEMAIL" ]; then
267
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
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# Export key from key rings to key files
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gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" --armor --export-options export-minimal \
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--comment "$FILECOMMENT" --output "$SECKEYFILE" \
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gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" --armor --export-options export-minimal \
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--comment "$FILECOMMENT" --output "$PUBKEYFILE" --export
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if [ "$mode" = password ]; then
284
[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
289
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`"
294
if [ $err -ne 0 ]; then
298
if [ -n "$ssh_fingerprint" ]; then
299
ssh_fingerprint="${ssh_fingerprint#localhost }"
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# Import key into temporary key rings
306
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" --trust-model always --armor \
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--import "$SECKEYFILE"
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gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$RINGDIR" --trust-model always --armor \
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--import "$PUBKEYFILE"
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# Get fingerprint of key
314
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
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--enable-dsa2 --homedir "$RINGDIR" --trust-model always \
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--fingerprint --with-colons \
318
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
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test -n "$FINGERPRINT"
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FILECOMMENT="Encrypted password for a Mandos client"
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while [ ! -s "$SECFILE" ]; do
325
if [ -n "$PASSFILE" ]; then
328
tty --quiet && stty -echo
329
echo -n "Enter passphrase: " >/dev/tty
331
tty --quiet && echo >&2
332
echo -n "Repeat passphrase: " >/dev/tty
338
if [ "$first" != "$second" ]; then
339
echo "Passphrase mismatch" >&2
340
touch "$RINGDIR"/mismatch
344
fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
345
--homedir "$RINGDIR" --trust-model always --armor \
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--encrypt --sign --recipient "$FINGERPRINT" --comment \
347
"$FILECOMMENT" > "$SECFILE"
348
if [ -e "$RINGDIR"/mismatch ]; then
349
rm --force "$RINGDIR"/mismatch
361
fingerprint = $FINGERPRINT
364
sed --quiet --expression='
365
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
367
# Remove 24-bit Radix-64 checksum
373
if [ -n "$ssh_fingerprint" ]; then
374
echo 'checker = ssh-keyscan -t '"$ssh_keytype"' %%(host)s 2>/dev/null | grep --fixed-strings --line-regexp --quiet --regexp=%%(host)s" %(ssh_fingerprint)s"'
375
echo "ssh_fingerprint = ${ssh_fingerprint}"
145
trap "rm --force $PUBRING $BATCHFILE; shred --remove $SECRING" EXIT
147
# Create batch file for GnuPG
148
cat >"$BATCHFILE" <<EOF
150
Key-Length: $KEYLENGTH
151
#Key-Usage: encrypt,sign,auth
155
Expire-Date: $KEYEXPIRE
163
# Generate a new key in the key rings
164
gpg --no-random-seed-file --quiet --batch --no-tty \
165
--no-default-keyring --no-options --batch \
166
--secret-keyring "$SECRING" --keyring "$PUBRING" \
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--gen-key "$BATCHFILE"
168
rm --force "$BATCHFILE"
170
# Backup any old key files
171
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
173
shred --remove "$SECKEYFILE"
175
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
177
rm --force "$PUBKEYFILE"
180
FILECOMMENT="Mandos client key for $KEYNAME"
181
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
182
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
185
if [ -n "$KEYEMAIL" ]; then
186
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
189
# Export keys from key rings to key files
190
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
191
--no-default-keyring --no-options --secret-keyring "$SECRING" \
192
--keyring "$PUBRING" --export-options export-minimal \
193
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
195
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
196
--no-default-keyring --no-options --secret-keyring "$SECRING" \
197
--keyring "$PUBRING" --export-options export-minimal \
198
--comment "$FILECOMMENT" --output "$PUBKEYFILE" \
382
# Remove the password file, if any
383
if [ -n "$SECFILE" ]; then
384
shred --remove "$SECFILE"
386
203
# Remove the key rings
387
shred --remove "$RINGDIR"/sec* 2>/dev/null
388
rm --recursive --force "$RINGDIR"
204
shred --remove "$SECRING"
205
rm --force "$PUBRING"