3
# Mandos key generator - create new keys for a Mandos client
5
# Copyright © 2008-2019 Teddy Hogeborn
6
# Copyright © 2008-2019 Björn Påhlsson
8
# This file is part of Mandos.
10
# Mandos is free software: you can redistribute it and/or modify it
11
# under the terms of the GNU General Public License as published by
3
# Mandos key generator - create a new OpenPGP key for a Mandos client
5
# Copyright © 2008-2014 Teddy Hogeborn
6
# Copyright © 2008-2014 Björn Påhlsson
8
# This program is free software: you can redistribute it and/or modify
9
# it under the terms of the GNU General Public License as published by
12
10
# the Free Software Foundation, either version 3 of the License, or
13
11
# (at your option) any later version.
15
# Mandos is distributed in the hope that it will be useful, but
16
# WITHOUT ANY WARRANTY; without even the implied warranty of
13
# This program is distributed in the hope that it will be useful,
14
# but WITHOUT ANY WARRANTY; without even the implied warranty of
17
15
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18
16
# GNU General Public License for more details.
20
18
# You should have received a copy of the GNU General Public License
21
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
19
# along with this program. If not, see <http://www.gnu.org/licenses/>.
23
21
# Contact the authors at <mandos@recompile.se>.
28
26
KEYDIR="/etc/keys/mandos"
48
TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:T:fS \
49
--longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,tls-keytype:,force,no-ssh \
44
TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:f \
45
--longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force \
50
46
--name "$0" -- "$@"`
53
basename="`basename "$0"`"
49
basename="`basename $0`"
55
51
Usage: $basename [ -v | --version ]
56
52
$basename [ -h | --help ]
64
60
-v, --version Show program's version number and exit
65
61
-h, --help Show this help message and exit
66
62
-d DIR, --dir DIR Target directory for key files
67
-t TYPE, --type TYPE OpenPGP key type. Default is RSA.
63
-t TYPE, --type TYPE Key type. Default is RSA.
68
64
-l BITS, --length BITS
69
OpenPGP key length in bits. Default is 4096.
65
Key length in bits. Default is 4096.
70
66
-s TYPE, --subtype TYPE
71
OpenPGP subkey type. Default is RSA.
67
Subkey type. Default is RSA.
72
68
-L BITS, --sublength BITS
73
OpenPGP subkey length in bits. Default 4096.
69
Subkey length in bits. Default is 4096.
74
70
-n NAME, --name NAME Name of key. Default is the FQDN.
75
71
-e ADDRESS, --email ADDRESS
76
Email address of OpenPGP key. Default empty.
72
Email address of key. Default is empty.
77
73
-c TEXT, --comment TEXT
78
Comment field for OpenPGP key. Default empty.
74
Comment field for key. The default is empty.
79
75
-x TIME, --expire TIME
80
OpenPGP key expire time. Default is none.
76
Key expire time. Default is no expiration.
81
77
See gpg(1) for syntax.
82
-T TYPE, --tls-keytype TYPE
83
TLS key type. Default is ed25519.
84
78
-f, --force Force overwriting old key files.
86
80
Password creation options:
91
85
Encrypt a password from FILE using the key in
92
86
the key directory. All options other than
93
87
--dir and --name are ignored.
94
-S, --no-ssh Don't get SSH key or set "checker" option.
109
102
-e|--email) KEYEMAIL="$2"; shift 2;;
110
103
-c|--comment) KEYCOMMENT="$2"; shift 2;;
111
104
-x|--expire) KEYEXPIRE="$2"; shift 2;;
112
-T|--tls-keytype) TLS_KEYTYPE="$2"; shift 2;;
113
105
-f|--force) FORCE=yes; shift;;
114
-S|--no-ssh) SSH=no; shift;;
115
106
-v|--version) echo "$0 $VERSION"; exit;;
116
107
-h|--help) help; exit;;
117
108
--) shift; break;;
121
112
if [ "$#" -gt 0 ]; then
122
echo "Unknown arguments: '$*'" >&2
113
echo "Unknown arguments: '$@'" >&2
126
117
SECKEYFILE="$KEYDIR/seckey.txt"
127
118
PUBKEYFILE="$KEYDIR/pubkey.txt"
128
TLS_PRIVKEYFILE="$KEYDIR/tls-privkey.pem"
129
TLS_PUBKEYFILE="$KEYDIR/tls-pubkey.pem"
131
120
# Check for some invalid values
132
121
if [ ! -d "$KEYDIR" ]; then
147
136
echo "Empty key type" >&2
151
140
if [ -z "$KEYNAME" ]; then
152
141
echo "Empty key name" >&2
156
145
if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
157
146
echo "Invalid key length" >&2
161
150
if [ -z "$KEYEXPIRE" ]; then
162
151
echo "Empty key expiration" >&2
166
155
# Make FORCE be 0 or 1
168
157
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
169
158
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
172
if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ] \
173
|| [ -e "$TLS_PRIVKEYFILE" ] \
174
|| [ -e "$TLS_PUBKEYFILE" ]; } \
175
&& [ "$FORCE" -eq 0 ]; then
161
if [ \( -e "$SECKEYFILE" -o -e "$PUBKEYFILE" \) \
162
-a "$FORCE" -eq 0 ]; then
176
163
echo "Refusing to overwrite old key files; use --force" >&2
180
167
# Set lines for GnuPG batch file
181
168
if [ -n "$KEYCOMMENT" ]; then
182
169
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
184
171
if [ -n "$KEYEMAIL" ]; then
185
172
KEYEMAILLINE="Name-Email: $KEYEMAIL"
188
175
# Create temporary gpg batch file
189
176
BATCHFILE="`mktemp -t mandos-keygen-batch.XXXXXXXXXX`"
190
TLS_PRIVKEYTMP="`mktemp -t mandos-keygen-privkey.XXXXXXXXXX`"
193
179
if [ "$mode" = password ]; then
204
190
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
205
test -n \"$TLS_PRIVKEYTMP\" && shred --remove \"$TLS_PRIVKEYTMP\"; \
206
shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
191
shred --remove \"$RINGDIR\"/sec*;
207
192
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
208
193
rm --recursive --force \"$RINGDIR\";
209
194
tty --quiet && stty echo; \
243
227
echo -n "Started: "
247
# Generate TLS private key
248
if certtool --generate-privkey --password='' \
249
--outfile "$TLS_PRIVKEYTMP" --sec-param ultra \
250
--key-type="$TLS_KEYTYPE" --pkcs8 --no-text 2>/dev/null; then
252
# Backup any old key files
253
if cp --backup=numbered --force "$TLS_PRIVKEYFILE" "$TLS_PRIVKEYFILE" \
255
shred --remove "$TLS_PRIVKEYFILE" 2>/dev/null || :
257
if cp --backup=numbered --force "$TLS_PUBKEYFILE" "$TLS_PUBKEYFILE" \
259
rm --force "$TLS_PUBKEYFILE"
261
cp --archive "$TLS_PRIVKEYTMP" "$TLS_PRIVKEYFILE"
262
shred --remove "$TLS_PRIVKEYTMP" 2>/dev/null || :
266
# First try certtool from GnuTLS
267
if ! certtool --password='' --load-privkey="$TLS_PRIVKEYFILE" \
268
--outfile="$TLS_PUBKEYFILE" --pubkey-info --no-text \
270
# Otherwise try OpenSSL
271
if ! openssl pkey -in "$TLS_PRIVKEYFILE" \
272
-out "$TLS_PUBKEYFILE" -pubout; then
273
rm --force "$TLS_PUBKEYFILE"
274
# None of the commands succeded; give up
280
231
# Make sure trustdb.gpg exists;
281
232
# this is a workaround for Debian bug #737128
282
233
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
287
238
--homedir "$RINGDIR" --trust-model always \
288
239
--gen-key "$BATCHFILE"
289
240
rm --force "$BATCHFILE"
291
242
if tty --quiet; then
292
243
echo -n "Finished: "
296
247
# Backup any old key files
297
248
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
298
249
2>/dev/null; then
299
shred --remove "$SECKEYFILE" 2>/dev/null || :
250
shred --remove "$SECKEYFILE"
301
252
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
302
253
2>/dev/null; then
303
254
rm --force "$PUBKEYFILE"
306
257
FILECOMMENT="Mandos client key for $KEYNAME"
307
258
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
308
259
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
311
262
if [ -n "$KEYEMAIL" ]; then
312
263
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
315
266
# Export key from key rings to key files
316
267
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
317
268
--homedir "$RINGDIR" --armor --export-options export-minimal \
325
276
if [ "$mode" = password ]; then
329
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) SSH=1;;
330
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) SSH=0;;
333
if [ $SSH -eq 1 ]; then
334
# The -q option is new in OpenSSH 9.8
335
for ssh_keyscan_quiet in "-q " ""; do
336
for ssh_keytype in ecdsa-sha2-nistp256 ed25519 rsa; do
338
ssh_fingerprint="`ssh-keyscan ${ssh_keyscan_quiet}-t $ssh_keytype localhost 2>/dev/null`"
341
if [ $err -ne 0 ]; then
345
if [ -n "$ssh_fingerprint" ]; then
346
ssh_fingerprint="${ssh_fingerprint#localhost }"
353
277
# Import key into temporary key rings
354
278
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
355
279
--homedir "$RINGDIR" --trust-model always --armor \
357
281
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
358
282
--homedir "$RINGDIR" --trust-model always --armor \
359
283
--import "$PUBKEYFILE"
361
285
# Get fingerprint of key
362
286
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
363
--enable-dsa2 --homedir "$RINGDIR" --trust-model always \
287
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
364
288
--fingerprint --with-colons \
366
290
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
368
292
test -n "$FINGERPRINT"
370
if [ -r "$TLS_PUBKEYFILE" ]; then
371
KEY_ID="$(certtool --key-id --hash=sha256 \
372
--infile="$TLS_PUBKEYFILE" 2>/dev/null || :)"
374
if [ -z "$KEY_ID" ]; then
375
KEY_ID=$(openssl pkey -pubin -in "$TLS_PUBKEYFILE" \
378
| sed --expression='s/^.*[^[:xdigit:]]//')
383
294
FILECOMMENT="Encrypted password for a Mandos client"
385
296
while [ ! -s "$SECFILE" ]; do
386
297
if [ -n "$PASSFILE" ]; then
389
300
tty --quiet && stty -echo
390
echo -n "Enter passphrase: " >/dev/tty
301
echo -n "Enter passphrase: " >&2
392
303
tty --quiet && echo >&2
393
echo -n "Repeat passphrase: " >/dev/tty
304
echo -n "Repeat passphrase: " >&2
395
306
if tty --quiet; then
439
if [ -n "$ssh_fingerprint" ]; then
440
if [ -n "$ssh_keyscan_quiet" ]; then
441
echo "# Note: if the Mandos server has OpenSSH older than 9.8, the ${ssh_keyscan_quiet}"
442
echo "# option *must* be removed from the 'checker' setting below"
444
echo 'checker = ssh-keyscan '"$ssh_keyscan_quiet"'-t '"$ssh_keytype"' %%(host)s 2>/dev/null | grep --fixed-strings --line-regexp --quiet --regexp=%%(host)s" %(ssh_fingerprint)s"'
445
echo "ssh_fingerprint = ${ssh_fingerprint}"
452
350
# Remove the password file, if any
453
351
if [ -n "$SECFILE" ]; then
454
shred --remove "$SECFILE" 2>/dev/null
352
shred --remove "$SECFILE"
456
354
# Remove the key rings
457
shred --remove "$RINGDIR"/sec* 2>/dev/null
355
shred --remove "$RINGDIR"/sec*
458
356
rm --recursive --force "$RINGDIR"
added
removed
mandos-keygen
