3
# Mandos key generator - create a new OpenPGP key for a Mandos client
5
# Copyright © 2008-2011 Teddy Hogeborn
6
# Copyright © 2008-2011 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
3
# Mandos key generator - create new keys for a Mandos client
5
# Copyright © 2008-2018 Teddy Hogeborn
6
# Copyright © 2008-2018 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
10
12
# the Free Software Foundation, either version 3 of the License, or
11
13
# (at your option) any later version.
13
# This program is distributed in the hope that it will be useful,
14
# 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
15
17
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
18
# GNU General Public License for more details.
18
20
# You should have received a copy of the GNU General Public License
19
# along with this program. If not, see <http://www.gnu.org/licenses/>.
21
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
21
23
# Contact the authors at <mandos@recompile.se>.
26
28
KEYDIR="/etc/keys/mandos"
31
33
KEYNAME="`hostname --fqdn 2>/dev/null || hostname`"
33
KEYCOMMENT="Mandos client key"
36
40
KEYCOMMENT_ORIG="$KEYCOMMENT"
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 \
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 \
46
50
--name "$0" -- "$@"`
49
basename="`basename $0`"
53
basename="`basename "$0"`"
51
55
Usage: $basename [ -v | --version ]
52
56
$basename [ -h | --help ]
60
64
-v, --version Show program's version number and exit
61
65
-h, --help Show this help message and exit
62
66
-d DIR, --dir DIR Target directory for key files
63
-t TYPE, --type TYPE Key type. Default is DSA.
67
-t TYPE, --type TYPE OpenPGP key type. Default is RSA.
64
68
-l BITS, --length BITS
65
Key length in bits. Default is 2048.
69
OpenPGP key length in bits. Default is 4096.
66
70
-s TYPE, --subtype TYPE
67
Subkey type. Default is ELG-E.
71
OpenPGP subkey type. Default is RSA.
68
72
-L BITS, --sublength BITS
69
Subkey length in bits. Default is 2048.
73
OpenPGP subkey length in bits. Default 4096.
70
74
-n NAME, --name NAME Name of key. Default is the FQDN.
71
75
-e ADDRESS, --email ADDRESS
72
Email address of key. Default is empty.
76
Email address of OpenPGP key. Default empty.
73
77
-c TEXT, --comment TEXT
74
Comment field for key. The default value is
78
Comment field for OpenPGP key. Default empty.
76
79
-x TIME, --expire TIME
77
Key expire time. Default is no expiration.
80
OpenPGP key expire time. Default is none.
78
81
See gpg(1) for syntax.
82
-T TYPE, --tls-keytype TYPE
83
TLS key type. Default is ed25519.
79
84
-f, --force Force overwriting old key files.
81
86
Password creation options:
86
91
Encrypt a password from FILE using the key in
87
92
the key directory. All options other than
88
93
--dir and --name are ignored.
94
-S, --no-ssh Don't get SSH key or set "checker" option.
103
109
-e|--email) KEYEMAIL="$2"; shift 2;;
104
110
-c|--comment) KEYCOMMENT="$2"; shift 2;;
105
111
-x|--expire) KEYEXPIRE="$2"; shift 2;;
112
-T|--tls-keytype) TLS_KEYTYPE="$2"; shift 2;;
106
113
-f|--force) FORCE=yes; shift;;
114
-S|--no-ssh) SSH=no; shift;;
107
115
-v|--version) echo "$0 $VERSION"; exit;;
108
116
-h|--help) help; exit;;
109
117
--) shift; break;;
113
121
if [ "$#" -gt 0 ]; then
114
echo "Unknown arguments: '$@'" >&2
122
echo "Unknown arguments: '$*'" >&2
118
126
SECKEYFILE="$KEYDIR/seckey.txt"
119
127
PUBKEYFILE="$KEYDIR/pubkey.txt"
128
TLS_PRIVKEYFILE="$KEYDIR/tls-privkey.pem"
129
TLS_PUBKEYFILE="$KEYDIR/tls-pubkey.pem"
121
131
# Check for some invalid values
122
132
if [ ! -d "$KEYDIR" ]; then
159
169
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
162
if [ \( -e "$SECKEYFILE" -o -e "$PUBKEYFILE" \) \
163
-a "$FORCE" -eq 0 ]; then
172
if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ] \
173
|| [ -e "$TLS_PRIVKEYFILE" ] \
174
|| [ -e "$TLS_PUBKEYFILE" ]; } \
175
&& [ "$FORCE" -eq 0 ]; then
164
176
echo "Refusing to overwrite old key files; use --force" >&2
191
203
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
192
shred --remove \"$RINGDIR\"/sec*;
204
shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
193
205
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
194
206
rm --recursive --force \"$RINGDIR\";
195
207
tty --quiet && stty echo; \
204
216
cat >"$BATCHFILE" <<-EOF
205
217
Key-Type: $KEYTYPE
206
218
Key-Length: $KEYLENGTH
207
#Key-Usage: encrypt,sign,auth
208
220
Subkey-Type: $SUBKEYTYPE
209
221
Subkey-Length: $SUBKEYLENGTH
210
#Subkey-Usage: encrypt,sign,auth
222
Subkey-Usage: encrypt
211
223
Name-Real: $KEYNAME
245
# Backup any old key files
246
if cp --backup=numbered --force "$TLS_PRIVKEYFILE" "$TLS_PRIVKEYFILE" \
248
shred --remove "$TLS_PRIVKEYFILE"
250
if cp --backup=numbered --force "$TLS_PUBKEYFILE" "$TLS_PUBKEYFILE" \
252
rm --force "$TLS_PUBKEYFILE"
255
## Generate TLS private key
257
# First try certtool from GnuTLS
258
if ! certtool --generate-privkey --password='' \
259
--outfile "$TLS_PRIVKEYFILE" --sec-param ultra \
260
--key-type="$TLS_KEYTYPE" --pkcs8 --no-text 2>/dev/null; then
261
# Otherwise try OpenSSL
262
if ! openssl genpkey -algorithm X25519 -out \
263
/etc/keys/mandos/tls-privkey.pem; then
264
rm --force /etc/keys/mandos/tls-privkey.pem
265
# None of the commands succeded; give up
272
# First try certtool from GnuTLS
273
if ! certtool --password='' --load-privkey="$TLS_PRIVKEYFILE" \
274
--outfile="$TLS_PUBKEYFILE" --pubkey-info --no-text \
276
# Otherwise try OpenSSL
277
if ! openssl pkey -in "$TLS_PRIVKEYFILE" \
278
-out "$TLS_PUBKEYFILE" -pubout; then
279
rm --force "$TLS_PUBKEYFILE"
280
# None of the commands succeded; give up
285
# Make sure trustdb.gpg exists;
286
# this is a workaround for Debian bug #737128
287
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
288
--homedir "$RINGDIR" \
289
--import-ownertrust < /dev/null
232
290
# Generate a new key in the key rings
233
291
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
234
292
--homedir "$RINGDIR" --trust-model always \
272
330
if [ "$mode" = password ]; then
334
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) SSH=1;;
335
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) SSH=0;;
338
if [ $SSH -eq 1 ]; then
339
for ssh_keytype in ecdsa-sha2-nistp256 ed25519 rsa; do
341
ssh_fingerprint="`ssh-keyscan -t $ssh_keytype localhost 2>/dev/null`"
344
if [ $err -ne 0 ]; then
348
if [ -n "$ssh_fingerprint" ]; then
349
ssh_fingerprint="${ssh_fingerprint#localhost }"
273
355
# Import key into temporary key rings
274
356
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
275
357
--homedir "$RINGDIR" --trust-model always --armor \
281
363
# Get fingerprint of key
282
364
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
283
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
365
--enable-dsa2 --homedir "$RINGDIR" --trust-model always \
284
366
--fingerprint --with-colons \
286
368
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
288
370
test -n "$FINGERPRINT"
372
KEY_ID="$(certtool --key-id --hash=sha256 \
373
--infile="$TLS_PUBKEYFILE" 2>/dev/null || :)"
375
if [ -z "$KEY_ID" ]; then
376
KEY_ID=$(openssl pkey -pubin -in /tmp/tls-pubkey.pem \
379
| sed --expression='s/^.*[^[:xdigit:]]//')
290
383
FILECOMMENT="Encrypted password for a Mandos client"
292
385
while [ ! -s "$SECFILE" ]; do
296
389
tty --quiet && stty -echo
297
read -p "Enter passphrase: " first
390
echo -n "Enter passphrase: " >/dev/tty
298
392
tty --quiet && echo >&2
299
read -p "Repeat passphrase: " second
393
echo -n "Repeat passphrase: " >/dev/tty
300
395
if tty --quiet; then
added
removed
mandos-keygen
