17
18
# You should have received a copy of the GNU General Public License
18
19
# along with this program. If not, see <http://www.gnu.org/licenses/>.
20
# Contact the authors at <mandos@fukt.bsnet.se>.
21
# Contact the authors at <mandos@recompile.se>.
30
KEYNAME="`hostname --fqdn`"
26
KEYDIR="/etc/keys/mandos"
31
KEYNAME="`hostname --fqdn 2>/dev/null || hostname`"
32
KEYCOMMENT="Mandos client key"
35
36
KEYCOMMENT_ORIG="$KEYCOMMENT"
39
if [ ! -d "$KEYDIR" ]; then
40
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 \
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 \
41
46
--name "$0" -- "$@"`
49
54
$basename [ OPTIONS ]
50
55
Encrypted password creation:
51
56
$basename { -p | --password } [ --name NAME ] [ --dir DIR]
57
$basename { -F | --passfile } FILE [ --name NAME ] [ --dir DIR]
53
59
Key creation options:
54
60
-v, --version Show program's version number and exit
55
61
-h, --help Show this help message and exit
56
62
-d DIR, --dir DIR Target directory for key files
57
-t TYPE, --type TYPE Key type. Default is DSA.
63
-t TYPE, --type TYPE Key type. Default is RSA.
58
64
-l BITS, --length BITS
59
Key length in bits. Default is 2048.
65
Key length in bits. Default is 4096.
60
66
-s TYPE, --subtype TYPE
61
Subkey type. Default is ELG-E.
67
Subkey type. Default is RSA.
62
68
-L BITS, --sublength BITS
63
Subkey length in bits. Default is 2048.
69
Subkey length in bits. Default is 4096.
64
70
-n NAME, --name NAME Name of key. Default is the FQDN.
65
71
-e ADDRESS, --email ADDRESS
66
72
Email address of key. Default is empty.
67
-c COMMENT, --comment COMMENT
68
Comment field for key. The default value is
73
-c TEXT, --comment TEXT
74
Comment field for key. The default is empty.
70
75
-x TIME, --expire TIME
71
76
Key expire time. Default is no expiration.
72
77
See gpg(1) for syntax.
73
-f, --force Force overwriting old keys.
78
-f, --force Force overwriting old key files.
75
80
Password creation options:
76
-p, --password Create an encrypted password using the keys in
77
the key directory. All options other than
78
--keydir and --name are ignored.
81
-p, --password Create an encrypted password using the key in
82
the key directory. All options other than
83
--dir and --name are ignored.
84
-F FILE, --passfile FILE
85
Encrypt a password from FILE using the key in
86
the key directory. All options other than
87
--dir and --name are ignored.
108
118
PUBKEYFILE="$KEYDIR/pubkey.txt"
110
120
# Check for some invalid values
111
if [ -d "$KEYDIR" ]; then :; else
121
if [ ! -d "$KEYDIR" ]; then
112
122
echo "$KEYDIR not a directory" >&2
115
if [ -w "$KEYDIR" ]; then :; else
116
echo "Directory $KEYDIR not writeable" >&2
120
if [ "$mode" = password -a -e "$KEYDIR/trustdb.gpg.lock" ]; then
121
echo "Key directory has locked trustdb; aborting." >&2
125
if [ ! -r "$KEYDIR" ]; then
126
echo "Directory $KEYDIR not readable" >&2
125
130
if [ "$mode" = keygen ]; then
131
if [ ! -w "$KEYDIR" ]; then
132
echo "Directory $KEYDIR not writeable" >&2
126
135
if [ -z "$KEYTYPE" ]; then
127
136
echo "Empty key type" >&2
162
171
if [ -n "$KEYEMAIL" ]; then
163
172
KEYEMAILLINE="Name-Email: $KEYEMAIL"
166
175
# Create temporary gpg batch file
167
BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
176
BATCHFILE="`mktemp -t mandos-keygen-batch.XXXXXXXXXX`"
170
179
if [ "$mode" = password ]; then
171
180
# Create temporary encrypted password file
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"
181
SECFILE="`mktemp -t mandos-keygen-secfile.XXXXXXXXXX`"
184
# Create temporary key ring directory
185
RINGDIR="`mktemp -d -t mandos-keygen-keyrings.XXXXXXXXXX`"
187
187
# Remove temporary files on exit
190
rm --force $PUBRING ${PUBRING}~ $BATCHFILE $TRUSTDB; \
191
shred --remove $SECRING $SECFILE; \
190
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
191
shred --remove \"$RINGDIR\"/sec*;
192
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
193
rm --recursive --force \"$RINGDIR\";
194
tty --quiet && stty echo; \
197
201
if [ "$mode" = keygen ]; then
198
202
# Create batch file for GnuPG
199
203
cat >"$BATCHFILE" <<-EOF
200
204
Key-Type: $KEYTYPE
201
205
Key-Length: $KEYLENGTH
202
#Key-Usage: encrypt,sign,auth
203
207
Subkey-Type: $SUBKEYTYPE
204
208
Subkey-Length: $SUBKEYLENGTH
205
#Subkey-Usage: encrypt,sign,auth
209
Subkey-Usage: encrypt
206
210
Name-Real: $KEYNAME
209
213
Expire-Date: $KEYEXPIRE
210
214
#Preferences: <string>
211
215
#Handle: <no-spaces>
216
#%pubring pubring.gpg
217
#%secring secring.gpg
223
Note: Due to entropy requirements, key generation could take
224
anything from a few minutes to SEVERAL HOURS. Please be
225
patient and/or supply the system with more entropy if needed.
217
231
# Generate a new key in the key rings
218
gpg --no-random-seed-file --quiet --batch --no-tty \
219
--no-default-keyring --no-options --enable-dsa2 \
220
--secret-keyring "$SECRING" --keyring "$PUBRING" \
232
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
233
--homedir "$RINGDIR" --trust-model always \
221
234
--gen-key "$BATCHFILE"
222
235
rm --force "$BATCHFILE"
224
242
# Backup any old key files
225
243
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
226
244
2>/dev/null; then
240
258
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
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
261
# Export key from key rings to key files
262
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
263
--homedir "$RINGDIR" --armor --export-options export-minimal \
264
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
266
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
267
--homedir "$RINGDIR" --armor --export-options export-minimal \
268
--comment "$FILECOMMENT" --output "$PUBKEYFILE" --export
256
271
if [ "$mode" = password ]; then
257
# Import keys into temporary key rings
258
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
259
--no-default-keyring --no-options --enable-dsa2 \
260
--homedir "$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 "$PUBKEYFILE"
272
# Import key into temporary key rings
273
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
274
--homedir "$RINGDIR" --trust-model always --armor \
275
--import "$SECKEYFILE"
276
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
277
--homedir "$RINGDIR" --trust-model always --armor \
278
--import "$PUBKEYFILE"
269
280
# Get fingerprint of key
270
FINGERPRINT="`gpg --no-random-seed-file --quiet --batch --no-tty \
271
--armor --no-default-keyring --no-options --enable-dsa2 \
272
--homedir \"$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}'`"
281
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
282
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
283
--fingerprint --with-colons \
285
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
277
287
test -n "$FINGERPRINT"
279
289
FILECOMMENT="Encrypted password for a Mandos client"
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 "$FILECOMMENT" \
291
while [ ! -s "$SECFILE" ]; do
292
if [ -n "$PASSFILE" ]; then
295
tty --quiet && stty -echo
296
echo -n "Enter passphrase: " >&2
298
tty --quiet && echo >&2
299
echo -n "Repeat passphrase: " >&2
305
if [ "$first" != "$second" ]; then
306
echo "Passphrase mismatch" >&2
307
touch "$RINGDIR"/mismatch
311
fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
312
--homedir "$RINGDIR" --trust-model always --armor \
313
--encrypt --sign --recipient "$FINGERPRINT" --comment \
314
"$FILECOMMENT" > "$SECFILE"
315
if [ -e "$RINGDIR"/mismatch ]; then
316
rm --force "$RINGDIR"/mismatch
297
328
fingerprint = $FINGERPRINT
331
sed --quiet --expression='
301
332
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
303
334
# Remove 24-bit Radix-64 checksum