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 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
12
9
# the Free Software Foundation, either version 3 of the License, or
13
10
# (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
12
# This program is distributed in the hope that it will be useful,
13
# but WITHOUT ANY WARRANTY; without even the implied warranty of
17
14
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18
15
# GNU General Public License for more details.
20
17
# You should have received a copy of the GNU General Public License
21
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
18
# along with this program. If not, see <http://www.gnu.org/licenses/>.
23
# Contact the authors at <mandos@recompile.se>.
20
# Contact the authors at <mandos@fukt.bsnet.se>.
28
25
KEYDIR="/etc/keys/mandos"
33
30
KEYNAME="`hostname --fqdn 2>/dev/null || hostname`"
32
KEYCOMMENT="Mandos client key"
40
35
KEYCOMMENT_ORIG="$KEYCOMMENT"
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 \
43
TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:f \
44
--longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force \
50
45
--name "$0" -- "$@"`
53
basename="`basename "$0"`"
48
basename="`basename $0`"
55
50
Usage: $basename [ -v | --version ]
56
51
$basename [ -h | --help ]
64
59
-v, --version Show program's version number and exit
65
60
-h, --help Show this help message and exit
66
61
-d DIR, --dir DIR Target directory for key files
67
-t TYPE, --type TYPE OpenPGP key type. Default is RSA.
62
-t TYPE, --type TYPE Key type. Default is DSA.
68
63
-l BITS, --length BITS
69
OpenPGP key length in bits. Default is 4096.
64
Key length in bits. Default is 2048.
70
65
-s TYPE, --subtype TYPE
71
OpenPGP subkey type. Default is RSA.
66
Subkey type. Default is ELG-E.
72
67
-L BITS, --sublength BITS
73
OpenPGP subkey length in bits. Default 4096.
68
Subkey length in bits. Default is 2048.
74
69
-n NAME, --name NAME Name of key. Default is the FQDN.
75
70
-e ADDRESS, --email ADDRESS
76
Email address of OpenPGP key. Default empty.
71
Email address of key. Default is empty.
77
72
-c TEXT, --comment TEXT
78
Comment field for OpenPGP key. Default empty.
73
Comment field for key. The default value is
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:
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 "$KEYDIR" ]; then
169
158
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
172
if { [ -e "$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 "$FORCE" -eq 0 ]; then
176
163
echo "Refusing to overwrite old key files; use --force" >&2
184
171
if [ -n "$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 \"$RINGDIR\";
209
tty --quiet && stty echo; \
216
199
if [ "$mode" = keygen ]; then
230
213
#Handle: <no-spaces>
231
214
#%pubring pubring.gpg
232
215
#%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 "$RINGDIR" \
284
--import-ownertrust < /dev/null
285
219
# Generate a new key in the key rings
286
220
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
287
221
--homedir "$RINGDIR" --trust-model always \
288
222
--gen-key "$BATCHFILE"
289
223
rm --force "$BATCHFILE"
296
225
# Backup any old key files
297
226
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
298
227
2>/dev/null; then
299
shred --remove "$SECKEYFILE" 2>/dev/null || :
228
shred --remove "$SECKEYFILE"
301
230
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
302
231
2>/dev/null; then
325
254
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
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="${ssh_fingerprint#localhost }"
350
255
# Import key into temporary key rings
351
256
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
352
257
--homedir "$RINGDIR" --trust-model always --armor \
358
263
# Get fingerprint of key
359
264
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
360
--enable-dsa2 --homedir "$RINGDIR" --trust-model always \
265
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
361
266
--fingerprint --with-colons \
363
268
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
365
270
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 "$TLS_PUBKEYFILE" \
375
| sed --expression='s/^.*[^[:xdigit:]]//')
380
272
FILECOMMENT="Encrypted password for a Mandos client"
382
while [ ! -s "$SECFILE" ]; do
383
if [ -n "$PASSFILE" ]; then
274
if [ -n "$PASSFILE" ]; then
278
echo -n "Enter passphrase: " >&2
279
first="$(head --lines=1 | tr --delete '\n')"
280
echo -n -e "\nRepeat passphrase: " >&2
281
second="$(head --lines=1 | tr --delete '\n')"
284
if [ "$first" != "$second" ]; then
285
echo -e "Passphrase mismatch" >&2
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 "$RINGDIR"/mismatch
290
fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
291
--homedir "$RINGDIR" --trust-model always --armor --encrypt \
292
--sign --recipient "$FINGERPRINT" --comment "$FILECOMMENT" \
294
status="${PIPESTATUS[0]}"
295
if [ "$status" -ne 0 ]; then
420
if [ -n "$KEY_ID" ]; then
421
echo "key_id = $KEY_ID"
424
302
fingerprint = $FINGERPRINT
445
319
# Remove the password file, if any
446
320
if [ -n "$SECFILE" ]; then
447
shred --remove "$SECFILE" 2>/dev/null
321
shred --remove "$SECFILE"
449
323
# Remove the key rings
450
shred --remove "$RINGDIR"/sec* 2>/dev/null
324
shred --remove "$RINGDIR"/sec*
451
325
rm --recursive --force "$RINGDIR"
added
removed
mandos-keygen
