3
# Mandos key generator - create a new OpenPGP key for a Mandos client
5
# Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
7
# This program is free software: you can redistribute it and/or modify
8
# it under the terms of the GNU General Public License as published by
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
9
12
# the Free Software Foundation, either version 3 of the License, or
10
13
# (at your option) any later version.
12
# This program is distributed in the hope that it will be useful,
13
# but WITHOUT ANY WARRANTY; without even the implied warranty of
15
# Mandos is distributed in the hope that it will be useful, but
16
# WITHOUT ANY WARRANTY; without even the implied warranty of
14
17
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15
18
# GNU General Public License for more details.
17
20
# You should have received a copy of the GNU General Public License
18
# along with this program. If not, see <http://www.gnu.org/licenses/>.
21
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
20
# Contact the authors at <mandos@fukt.bsnet.se>.
23
# Contact the authors at <mandos@recompile.se>.
25
28
KEYDIR="/etc/keys/mandos"
30
KEYNAME="`hostname --fqdn`"
33
KEYNAME="`hostname --fqdn 2>/dev/null || hostname`"
32
KEYCOMMENT="Mandos client key"
35
40
KEYCOMMENT_ORIG="$KEYCOMMENT"
43
if [ ! -d "$KEYDIR" ]; then
44
KEYDIR="/etc/mandos/keys"
39
TEMP=`getopt --options vhd:t:l:n:e:c:x:f \
40
--longoptions version,help,password,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force \
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 \
41
50
--name "$0" -- "$@"`
44
basename="`basename $0`"
53
basename="`basename "$0"`"
46
55
Usage: $basename [ -v | --version ]
47
56
$basename [ -h | --help ]
49
58
$basename [ OPTIONS ]
50
59
Encrypted password creation:
51
60
$basename { -p | --password } [ --name NAME ] [ --dir DIR]
61
$basename { -F | --passfile } FILE [ --name NAME ] [ --dir DIR]
53
63
Key creation options:
54
64
-v, --version Show program's version number and exit
55
65
-h, --help Show this help message and exit
56
66
-d DIR, --dir DIR Target directory for key files
57
-t TYPE, --type TYPE Key type. Default is DSA.
67
-t TYPE, --type TYPE OpenPGP key type. Default is RSA.
58
68
-l BITS, --length BITS
59
Key length in bits. Default is 2048.
69
OpenPGP key length in bits. Default is 4096.
60
70
-s TYPE, --subtype TYPE
61
Subkey type. Default is ELG-E.
71
OpenPGP subkey type. Default is RSA.
62
72
-L BITS, --sublength BITS
63
Subkey length in bits. Default is 2048.
73
OpenPGP subkey length in bits. Default 4096.
64
74
-n NAME, --name NAME Name of key. Default is the FQDN.
65
75
-e ADDRESS, --email ADDRESS
66
Email address of key. Default is empty.
76
Email address of OpenPGP key. Default empty.
67
77
-c TEXT, --comment TEXT
68
Comment field for key. The default value is
78
Comment field for OpenPGP key. Default empty.
70
79
-x TIME, --expire TIME
71
Key expire time. Default is no expiration.
80
OpenPGP key expire time. Default is none.
72
81
See gpg(1) for syntax.
73
-f, --force Force overwriting old keys.
82
-T TYPE, --tls-keytype TYPE
83
TLS key type. Default is ed25519.
84
-f, --force Force overwriting old key files.
75
86
Password creation options:
76
-p, --password Create an encrypted password using the keys in
77
the key directory. All options other than
78
--dir and --name are ignored.
87
-p, --password Create an encrypted password using the key in
88
the key directory. All options other than
89
--dir and --name are ignored.
90
-F FILE, --passfile FILE
91
Encrypt a password from FILE using the key in
92
the key directory. All options other than
93
--dir and --name are ignored.
94
-S, --no-ssh Don't get SSH key or set "checker" option.
102
121
if [ "$#" -gt 0 ]; then
103
echo "Unknown arguments: '$@'" >&2
122
echo "Unknown arguments: '$*'" >&2
107
126
SECKEYFILE="$KEYDIR/seckey.txt"
108
127
PUBKEYFILE="$KEYDIR/pubkey.txt"
128
TLS_PRIVKEYFILE="$KEYDIR/tls-privkey.pem"
129
TLS_PUBKEYFILE="$KEYDIR/tls-pubkey.pem"
110
131
# Check for some invalid values
111
132
if [ ! -d "$KEYDIR" ]; then
141
162
echo "Empty key expiration" >&2
145
166
# Make FORCE be 0 or 1
147
168
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
148
169
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
151
if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ]; } \
172
if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ] \
173
|| [ -e "$TLS_PRIVKEYFILE" ] \
174
|| [ -e "$TLS_PUBKEYFILE" ]; } \
152
175
&& [ "$FORCE" -eq 0 ]; then
153
176
echo "Refusing to overwrite old key files; use --force" >&2
157
180
# Set lines for GnuPG batch file
158
181
if [ -n "$KEYCOMMENT" ]; then
159
182
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
180
204
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
181
shred --remove \"$RINGDIR\"/sec*;
205
test -n \"$TLS_PRIVKEYTMP\" && shred --remove \"$TLS_PRIVKEYTMP\"; \
206
shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
182
207
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
183
208
rm --recursive --force \"$RINGDIR\";
209
tty --quiet && stty echo; \
189
216
if [ "$mode" = keygen ]; then
190
217
# Create batch file for GnuPG
191
218
cat >"$BATCHFILE" <<-EOF
192
219
Key-Type: $KEYTYPE
193
220
Key-Length: $KEYLENGTH
194
#Key-Usage: encrypt,sign,auth
195
222
Subkey-Type: $SUBKEYTYPE
196
223
Subkey-Length: $SUBKEYLENGTH
197
#Subkey-Usage: encrypt,sign,auth
224
Subkey-Usage: encrypt
198
225
Name-Real: $KEYNAME
203
230
#Handle: <no-spaces>
204
231
#%pubring pubring.gpg
205
232
#%secring secring.gpg
239
Note: Due to entropy requirements, key generation could take
240
anything from a few minutes to SEVERAL HOURS. Please be
241
patient and/or supply the system with more entropy if needed.
247
# Generate TLS private key
248
if certtool --generate-privkey --password='' \
249
--outfile "$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 "$TLS_PUBKEYFILE"
274
# None of the commands succeded; give up
280
# Make sure trustdb.gpg exists;
281
# this is a workaround for Debian bug #737128
282
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
283
--homedir "$RINGDIR" \
284
--import-ownertrust < /dev/null
209
285
# Generate a new key in the key rings
210
286
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
211
287
--homedir "$RINGDIR" --trust-model always \
212
288
--gen-key "$BATCHFILE"
213
289
rm --force "$BATCHFILE"
215
296
# Backup any old key files
216
297
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
217
298
2>/dev/null; then
218
shred --remove "$SECKEYFILE"
299
shred --remove "$SECKEYFILE" 2>/dev/null || :
220
301
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
221
302
2>/dev/null; then
222
303
rm --force "$PUBKEYFILE"
225
306
FILECOMMENT="Mandos client key for $KEYNAME"
226
307
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
227
308
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
230
311
if [ -n "$KEYEMAIL" ]; then
231
312
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
234
# Export keys from key rings to key files
315
# Export key from key rings to key files
235
316
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
236
317
--homedir "$RINGDIR" --armor --export-options export-minimal \
237
318
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
244
325
if [ "$mode" = password ]; then
245
# Import keys into temporary key rings
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
for ssh_keytype in ecdsa-sha2-nistp256 ed25519 rsa; do
336
ssh_fingerprint="`ssh-keyscan -t $ssh_keytype localhost 2>/dev/null`"
339
if [ $err -ne 0 ]; then
343
if [ -n "$ssh_fingerprint" ]; then
344
ssh_fingerprint="${ssh_fingerprint#localhost }"
350
# Import key into temporary key rings
246
351
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
247
352
--homedir "$RINGDIR" --trust-model always --armor \
248
353
--import "$SECKEYFILE"
249
354
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
250
355
--homedir "$RINGDIR" --trust-model always --armor \
251
356
--import "$PUBKEYFILE"
253
358
# Get fingerprint of key
254
359
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
255
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
360
--enable-dsa2 --homedir "$RINGDIR" --trust-model always \
256
361
--fingerprint --with-colons \
257
| sed -n -e '/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
363
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
259
365
test -n "$FINGERPRINT"
367
if [ -r "$TLS_PUBKEYFILE" ]; then
368
KEY_ID="$(certtool --key-id --hash=sha256 \
369
--infile="$TLS_PUBKEYFILE" 2>/dev/null || :)"
371
if [ -z "$KEY_ID" ]; then
372
KEY_ID=$(openssl pkey -pubin -in "$TLS_PUBKEYFILE" \
375
| sed --expression='s/^.*[^[:xdigit:]]//')
261
380
FILECOMMENT="Encrypted password for a Mandos client"
264
echo -n "Enter passphrase: " >&2
266
| gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
267
--homedir "$RINGDIR" --trust-model always --armor --encrypt \
268
--recipient "$FINGERPRINT" --comment "$FILECOMMENT" \
382
while [ ! -s "$SECFILE" ]; do
383
if [ -n "$PASSFILE" ]; then
386
tty --quiet && stty -echo
387
echo -n "Enter passphrase: " >/dev/tty
389
tty --quiet && echo >&2
390
echo -n "Repeat passphrase: " >/dev/tty
396
if [ "$first" != "$second" ]; then
397
echo "Passphrase mismatch" >&2
398
touch "$RINGDIR"/mismatch
402
fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
403
--homedir "$RINGDIR" --trust-model always --armor \
404
--encrypt --sign --recipient "$FINGERPRINT" --comment \
405
"$FILECOMMENT" > "$SECFILE"
406
if [ -e "$RINGDIR"/mismatch ]; then
407
rm --force "$RINGDIR"/mismatch
420
if [ -n "$KEY_ID" ]; then
421
echo "key_id = $KEY_ID"
276
424
fingerprint = $FINGERPRINT
427
sed --quiet --expression='
280
428
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
282
430
# Remove 24-bit Radix-64 checksum
added
removed
mandos-keygen
