18
17
# You should have received a copy of the GNU General Public License
19
18
# along with this program. If not, see <http://www.gnu.org/licenses/>.
21
# Contact the authors at <mandos@recompile.se>.
20
# Contact the authors at <mandos@fukt.bsnet.se>.
26
KEYDIR="/etc/keys/mandos"
31
KEYNAME="`hostname --fqdn 2>/dev/null || hostname`"
30
KEYNAME="`hostname --fqdn`"
32
KEYCOMMENT="Mandos client key"
37
35
KEYCOMMENT_ORIG="$KEYCOMMENT"
40
if [ ! -d "$KEYDIR" ]; then
41
KEYDIR="/etc/mandos/keys"
45
TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:fS \
46
--longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force,no-ssh \
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 \
47
41
--name "$0" -- "$@"`
55
49
$basename [ OPTIONS ]
56
50
Encrypted password creation:
57
51
$basename { -p | --password } [ --name NAME ] [ --dir DIR]
58
$basename { -F | --passfile } FILE [ --name NAME ] [ --dir DIR]
60
53
Key creation options:
61
54
-v, --version Show program's version number and exit
62
55
-h, --help Show this help message and exit
63
56
-d DIR, --dir DIR Target directory for key files
64
-t TYPE, --type TYPE Key type. Default is RSA.
57
-t TYPE, --type TYPE Key type. Default is DSA.
65
58
-l BITS, --length BITS
66
Key length in bits. Default is 4096.
59
Key length in bits. Default is 1024.
67
60
-s TYPE, --subtype TYPE
68
Subkey type. Default is RSA.
61
Subkey type. Default is ELG-E.
69
62
-L BITS, --sublength BITS
70
Subkey length in bits. Default is 4096.
63
Subkey length in bits. Default is 2048.
71
64
-n NAME, --name NAME Name of key. Default is the FQDN.
72
65
-e ADDRESS, --email ADDRESS
73
66
Email address of key. Default is empty.
74
-c TEXT, --comment TEXT
75
Comment field for key. The default is empty.
67
-c COMMENT, --comment COMMENT
68
Comment field for key. The default value is
76
70
-x TIME, --expire TIME
77
71
Key expire time. Default is no expiration.
78
72
See gpg(1) for syntax.
79
-f, --force Force overwriting old key files.
73
-f, --force Force overwriting old keys.
81
75
Password creation options:
82
-p, --password Create an encrypted password using the key in
83
the key directory. All options other than
84
--dir and --name are ignored.
85
-F FILE, --passfile FILE
86
Encrypt a password from FILE using the key in
87
the key directory. All options other than
88
--dir and --name are ignored.
89
-S, --no-ssh Don't get SSH key or set "checker" option.
76
-p, --password Create an encrypted password using the keys in
77
the key directory. All options other than
78
--keydir and --name are ignored.
121
108
PUBKEYFILE="$KEYDIR/pubkey.txt"
123
110
# Check for some invalid values
124
if [ ! -d "$KEYDIR" ]; then
111
if [ -d "$KEYDIR" ]; then :; else
125
112
echo "$KEYDIR not a directory" >&2
128
if [ ! -r "$KEYDIR" ]; then
129
echo "Directory $KEYDIR not readable" >&2
115
if [ -w "$KEYDIR" ]; then :; else
116
echo "Directory $KEYDIR not writeable" >&2
120
if [ "$mode" = password -a -e "$KEYDIR/trustdb.gpg.lock" ]; then
121
echo "Key directory has locked trustdb; aborting." >&2
133
125
if [ "$mode" = keygen ]; then
134
if [ ! -w "$KEYDIR" ]; then
135
echo "Directory $KEYDIR not writeable" >&2
138
126
if [ -z "$KEYTYPE" ]; then
139
127
echo "Empty key type" >&2
174
162
if [ -n "$KEYEMAIL" ]; then
175
163
KEYEMAILLINE="Name-Email: $KEYEMAIL"
178
166
# Create temporary gpg batch file
179
BATCHFILE="`mktemp -t mandos-keygen-batch.XXXXXXXXXX`"
167
BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
182
170
if [ "$mode" = password ]; then
183
171
# Create temporary encrypted password file
184
SECFILE="`mktemp -t mandos-keygen-secfile.XXXXXXXXXX`"
187
# Create temporary key ring directory
188
RINGDIR="`mktemp -d -t mandos-keygen-keyrings.XXXXXXXXXX`"
172
SECFILE="`mktemp -t mandos-gpg-secfile.XXXXXXXXXX`"
175
# Create temporary key rings
176
SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
177
PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"
179
if [ "$mode" = password ]; then
180
# If a trustdb.gpg file does not already exist, schedule it for
181
# deletion when we are done.
182
if ! [ -e "$KEYDIR/trustdb.gpg" ]; then
183
TRUSTDB="$KEYDIR/trustdb.gpg"
190
187
# Remove temporary files on exit
193
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
194
shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
195
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
196
rm --recursive --force \"$RINGDIR\";
197
tty --quiet && stty echo; \
190
rm --force $PUBRING ${PUBRING}~ $BATCHFILE $TRUSTDB; \
191
shred --remove $SECRING $SECFILE; \
204
197
if [ "$mode" = keygen ]; then
205
198
# Create batch file for GnuPG
206
199
cat >"$BATCHFILE" <<-EOF
207
200
Key-Type: $KEYTYPE
208
201
Key-Length: $KEYLENGTH
202
#Key-Usage: encrypt,sign,auth
210
203
Subkey-Type: $SUBKEYTYPE
211
204
Subkey-Length: $SUBKEYLENGTH
212
Subkey-Usage: encrypt
205
#Subkey-Usage: encrypt,sign,auth
213
206
Name-Real: $KEYNAME
216
209
Expire-Date: $KEYEXPIRE
217
210
#Preferences: <string>
218
211
#Handle: <no-spaces>
219
#%pubring pubring.gpg
220
#%secring secring.gpg
226
Note: Due to entropy requirements, key generation could take
227
anything from a few minutes to SEVERAL HOURS. Please be
228
patient and/or supply the system with more entropy if needed.
234
# Make sure trustdb.gpg exists;
235
# this is a workaround for Debian bug #737128
236
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
237
--homedir "$RINGDIR" \
238
--import-ownertrust < /dev/null
239
217
# Generate a new key in the key rings
240
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
241
--homedir "$RINGDIR" --trust-model always \
218
gpg --no-random-seed-file --quiet --batch --no-tty \
219
--no-default-keyring --no-options --enable-dsa2 \
220
--secret-keyring "$SECRING" --keyring "$PUBRING" \
242
221
--gen-key "$BATCHFILE"
243
222
rm --force "$BATCHFILE"
250
224
# Backup any old key files
251
225
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
252
226
2>/dev/null; then
266
240
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
269
# Export key from key rings to key files
270
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
271
--homedir "$RINGDIR" --armor --export-options export-minimal \
272
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
274
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
275
--homedir "$RINGDIR" --armor --export-options export-minimal \
276
--comment "$FILECOMMENT" --output "$PUBKEYFILE" --export
243
# Export keys from key rings to key files
244
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
245
--no-default-keyring --no-options --enable-dsa2 \
246
--secret-keyring "$SECRING" --keyring "$PUBRING" \
247
--export-options export-minimal --comment "$FILECOMMENT" \
248
--output "$SECKEYFILE" --export-secret-keys
249
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
250
--no-default-keyring --no-options --enable-dsa2 \
251
--secret-keyring "$SECRING" --keyring "$PUBRING" \
252
--export-options export-minimal --comment "$FILECOMMENT" \
253
--output "$PUBKEYFILE" --export
279
256
if [ "$mode" = password ]; then
283
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) SSH=1;;
284
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) SSH=0;;
287
if [ $SSH -eq 1 ]; then
289
ssh_fingerprint="`ssh-keyscan localhost 2>/dev/null`"
290
if [ $? -ne 0 ]; then
294
ssh_fingerprint="${ssh_fingerprint#localhost }"
297
# Import key into temporary key rings
298
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
299
--homedir "$RINGDIR" --trust-model always --armor \
300
--import "$SECKEYFILE"
301
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
302
--homedir "$RINGDIR" --trust-model always --armor \
303
--import "$PUBKEYFILE"
257
# Import keys into temporary key rings
258
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
259
--no-default-keyring --no-options --enable-dsa2 \
260
--homedir "$KEYDIR" --no-permission-warning \
261
--secret-keyring "$SECRING" --keyring "$PUBRING" \
262
--trust-model always --import "$SECKEYFILE"
263
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
264
--no-default-keyring --no-options --enable-dsa2 \
265
--homedir "$KEYDIR" --no-permission-warning \
266
--secret-keyring "$SECRING" --keyring "$PUBRING" \
267
--trust-model always --import "$PUBKEYFILE"
305
269
# Get fingerprint of key
306
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
307
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
308
--fingerprint --with-colons \
310
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
270
FINGERPRINT="`gpg --no-random-seed-file --quiet --batch --no-tty \
271
--armor --no-default-keyring --no-options --enable-dsa2 \
272
--homedir \"$KEYDIR\" --no-permission-warning \
273
--secret-keyring \"$SECRING\" --keyring \"$PUBRING\" \
274
--trust-model always --fingerprint --with-colons \
275
| sed -n -e '/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
312
277
test -n "$FINGERPRINT"
314
279
FILECOMMENT="Encrypted password for a Mandos client"
316
while [ ! -s "$SECFILE" ]; do
317
if [ -n "$PASSFILE" ]; then
320
tty --quiet && stty -echo
321
echo -n "Enter passphrase: " >&2
323
tty --quiet && echo >&2
324
echo -n "Repeat passphrase: " >&2
330
if [ "$first" != "$second" ]; then
331
echo "Passphrase mismatch" >&2
332
touch "$RINGDIR"/mismatch
336
fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
337
--homedir "$RINGDIR" --trust-model always --armor \
338
--encrypt --sign --recipient "$FINGERPRINT" --comment \
339
"$FILECOMMENT" > "$SECFILE"
340
if [ -e "$RINGDIR"/mismatch ]; then
341
rm --force "$RINGDIR"/mismatch
282
echo -n "Enter passphrase: " >&2
284
| gpg --no-random-seed-file --batch --no-tty --armor \
285
--no-default-keyring --no-options --enable-dsa2 \
286
--homedir "$KEYDIR" --no-permission-warning \
287
--secret-keyring "$SECRING" --keyring "$PUBRING" \
288
--trust-model always --encrypt --recipient "$FINGERPRINT" \
289
--comment "$FILECOMMENT" \
353
297
fingerprint = $FINGERPRINT
356
sed --quiet --expression='
357
301
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
359
# Remove 24-bit Radix-64 checksum
361
303
# Indent four spaces
365
if [ -n "$ssh_fingerprint" ]; then
366
echo 'checker = ssh-keyscan %%(host)s 2>/dev/null | grep --fixed-strings --line-regexp --quiet --regexp="%%(host)s %(ssh_fingerprint)s"'
367
echo "ssh_fingerprint = ${ssh_fingerprint}"