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# Mandos key generator - create a new OpenPGP key for a Mandos client
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# Copyright © 2008 Teddy Hogeborn
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# Copyright © 2008 Björn Påhlsson
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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 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@fukt.bsnet.se>.
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# Contact the authors at <mandos@recompile.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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-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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-t TYPE, --type TYPE Key type. Default is RSA.
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-l BITS, --length BITS
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Key length in bits. Default is 2048.
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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 ELG-E.
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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 2048.
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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 key. Default is empty.
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-c TEXT, --comment TEXT
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Comment field for key. The default value is
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Comment field for key. The default is empty.
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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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shred --remove \"$RINGDIR\"/sec*;
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test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
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rm --recursive --force \"$RINGDIR\";
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tty --quiet && stty echo; \
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if [ "$mode" = keygen ]; then
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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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Subkey-Usage: encrypt
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Name-Real: $KEYNAME
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Note: Due to entropy requirements, key generation could take
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anything from a few minutes to SEVERAL HOURS. Please be
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patient and/or supply the system with more entropy if needed.
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# Make sure trustdb.gpg exists;
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# this is a workaround for Debian bug #737128
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gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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--homedir "$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" "$SECKEYFILE" \
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2>/dev/null; then
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FILECOMMENT="Encrypted password for a Mandos client"
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if [ -n "$PASSFILE" ]; then
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echo -n "Enter passphrase: " >&2
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first="$(head --lines=1 | tr --delete '\n')"
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echo -n -e "\nRepeat passphrase: " >&2
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second="$(head --lines=1 | tr --delete '\n')"
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if [ "$first" != "$second" ]; then
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echo -e "Passphrase mismatch" >&2
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while [ ! -s "$SECFILE" ]; do
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if [ -n "$PASSFILE" ]; then
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tty --quiet && stty -echo
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echo -n "Enter passphrase: " >&2
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tty --quiet && echo >&2
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echo -n "Repeat passphrase: " >&2
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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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status="${PIPESTATUS[0]}"
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if [ "$status" -ne 0 ]; then