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`"
28
KEYNAME="`hostname --fqdn`"
30
KEYCOMMENT="Mandos client key"
37
33
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 \
36
TEMP=`getopt --options vhd:t:l:n:e:c:x:f \
37
--longoptions version,help,dir:,type:,length:,name:,email:,comment:,expire:,force \
47
38
--name "$0" -- "$@"`
50
basename="`basename $0`"
52
Usage: $basename [ -v | --version ]
53
$basename [ -h | --help ]
56
Encrypted password creation:
57
$basename { -p | --password } [ --name NAME ] [ --dir DIR]
58
$basename { -F | --passfile } FILE [ --name NAME ] [ --dir DIR]
42
Usage: `basename $0` [options]
61
45
-v, --version Show program's version number and exit
62
46
-h, --help Show this help message and exit
63
47
-d DIR, --dir DIR Target directory for key files
64
-t TYPE, --type TYPE Key type. Default is RSA.
48
-t TYPE, --type TYPE Key type. Default is DSA.
65
49
-l BITS, --length BITS
66
Key length in bits. Default is 4096.
67
-s TYPE, --subtype TYPE
68
Subkey type. Default is RSA.
69
-L BITS, --sublength BITS
70
Subkey length in bits. Default is 4096.
50
Key length in bits. Default is 1024.
71
51
-n NAME, --name NAME Name of key. Default is the FQDN.
72
-e ADDRESS, --email ADDRESS
52
-e EMAIL, --email EMAIL
73
53
Email address of key. Default is empty.
74
-c TEXT, --comment TEXT
75
Comment field for key. The default is empty.
54
-c COMMENT, --comment COMMENT
55
Comment field for key. The default value is
76
57
-x TIME, --expire TIME
77
58
Key expire time. Default is no expiration.
78
59
See gpg(1) for syntax.
79
-f, --force Force overwriting old key files.
81
Password creation options:
82
-p, --password Create an encrypted password using the key in
83
the key directory. All options other than
84
--dir and --name are ignored.
85
-F FILE, --passfile FILE
86
Encrypt a password from FILE using the key in
87
the key directory. All options other than
88
--dir and --name are ignored.
89
-S, --no-ssh Don't get SSH key or set "checker" option.
60
-f, --force Force overwriting old keys.
93
64
eval set -- "$TEMP"
96
-p|--password) mode=password; shift;;
97
-F|--passfile) mode=password; PASSFILE="$2"; shift 2;;
98
67
-d|--dir) KEYDIR="$2"; shift 2;;
99
68
-t|--type) KEYTYPE="$2"; shift 2;;
100
-s|--subtype) SUBKEYTYPE="$2"; shift 2;;
101
69
-l|--length) KEYLENGTH="$2"; shift 2;;
102
-L|--sublength) SUBKEYLENGTH="$2"; shift 2;;
103
70
-n|--name) KEYNAME="$2"; shift 2;;
104
71
-e|--email) KEYEMAIL="$2"; shift 2;;
105
72
-c|--comment) KEYCOMMENT="$2"; shift 2;;
106
73
-x|--expire) KEYEXPIRE="$2"; shift 2;;
107
74
-f|--force) FORCE=yes; shift;;
108
-S|--no-ssh) SSH=no; shift;;
109
75
-v|--version) echo "$0 $VERSION"; exit;;
110
76
-h|--help) help; exit;;
111
77
--) shift; break;;
121
87
PUBKEYFILE="$KEYDIR/pubkey.txt"
123
89
# Check for some invalid values
124
if [ ! -d "$KEYDIR" ]; then
90
if [ -d "$KEYDIR" ]; then :; else
125
91
echo "$KEYDIR not a directory" >&2
128
if [ ! -r "$KEYDIR" ]; then
129
echo "Directory $KEYDIR not readable" >&2
133
if [ "$mode" = keygen ]; then
134
if [ ! -w "$KEYDIR" ]; then
135
echo "Directory $KEYDIR not writeable" >&2
138
if [ -z "$KEYTYPE" ]; then
139
echo "Empty key type" >&2
143
if [ -z "$KEYNAME" ]; then
144
echo "Empty key name" >&2
148
if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
149
echo "Invalid key length" >&2
153
if [ -z "$KEYEXPIRE" ]; then
154
echo "Empty key expiration" >&2
158
# Make FORCE be 0 or 1
160
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
161
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
164
if [ \( -e "$SECKEYFILE" -o -e "$PUBKEYFILE" \) \
165
-a "$FORCE" -eq 0 ]; then
166
echo "Refusing to overwrite old key files; use --force" >&2
170
# Set lines for GnuPG batch file
171
if [ -n "$KEYCOMMENT" ]; then
172
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
174
if [ -n "$KEYEMAIL" ]; then
175
KEYEMAILLINE="Name-Email: $KEYEMAIL"
178
# Create temporary gpg batch file
179
BATCHFILE="`mktemp -t mandos-keygen-batch.XXXXXXXXXX`"
182
if [ "$mode" = password ]; then
183
# 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`"
94
if [ -w "$KEYDIR" ]; then :; else
95
echo "Directory $KEYDIR not writeable" >&2
99
if [ -z "$KEYTYPE" ]; then
100
echo "Empty key type" >&2
104
if [ -z "$KEYNAME" ]; then
105
echo "Empty key name" >&2
109
if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
110
echo "Invalid key length" >&2
114
if [ -z "$KEYEXPIRE" ]; then
115
echo "Empty key expiration" >&2
119
# Make FORCE be 0 or 1
121
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
122
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
125
if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ]; } \
126
&& [ "$FORCE" -eq 0 ]; then
127
echo "Refusing to overwrite old key files; use --force" >&2
131
# Set lines for GnuPG batch file
132
if [ -n "$KEYCOMMENT" ]; then
133
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
135
if [ -n "$KEYEMAIL" ]; then
136
KEYEMAILLINE="Name-Email: $KEYEMAIL"
140
BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
141
SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
142
PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"
190
144
# Remove temporary files on exit
193
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
194
shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
195
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
196
rm --recursive --force \"$RINGDIR\";
197
tty --quiet && stty echo; \
204
if [ "$mode" = keygen ]; then
205
# Create batch file for GnuPG
206
cat >"$BATCHFILE" <<-EOF
208
Key-Length: $KEYLENGTH
210
Subkey-Type: $SUBKEYTYPE
211
Subkey-Length: $SUBKEYLENGTH
212
Subkey-Usage: encrypt
216
Expire-Date: $KEYEXPIRE
217
#Preferences: <string>
219
#%pubring pubring.gpg
220
#%secring secring.gpg
226
Note: Due to entropy requirements, key generation could take
227
anything from a few minutes to SEVERAL HOURS. Please be
228
patient and/or supply the system with more entropy if needed.
234
# Make sure trustdb.gpg exists;
235
# this is a workaround for Debian bug #737128
236
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
237
--homedir "$RINGDIR" \
238
--import-ownertrust < /dev/null
239
# Generate a new key in the key rings
240
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
241
--homedir "$RINGDIR" --trust-model always \
242
--gen-key "$BATCHFILE"
243
rm --force "$BATCHFILE"
250
# Backup any old key files
251
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
253
shred --remove "$SECKEYFILE"
255
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
257
rm --force "$PUBKEYFILE"
260
FILECOMMENT="Mandos client key for $KEYNAME"
261
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
262
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
265
if [ -n "$KEYEMAIL" ]; then
266
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
279
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"
305
# Get fingerprint of key
306
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
307
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
308
--fingerprint --with-colons \
310
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
312
test -n "$FINGERPRINT"
314
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
353
fingerprint = $FINGERPRINT
356
sed --quiet --expression='
357
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
359
# Remove 24-bit Radix-64 checksum
365
if [ -n "$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}"
145
trap "rm --force $PUBRING $BATCHFILE; shred --remove $SECRING" EXIT
147
# Create batch file for GnuPG
148
cat >"$BATCHFILE" <<EOF
150
Key-Length: $KEYLENGTH
151
#Key-Usage: encrypt,sign,auth
155
Expire-Date: $KEYEXPIRE
163
# Generate a new key in the key rings
164
gpg --no-random-seed-file --quiet --batch --no-tty \
165
--no-default-keyring --no-options --batch \
166
--secret-keyring "$SECRING" --keyring "$PUBRING" \
167
--gen-key "$BATCHFILE"
168
rm --force "$BATCHFILE"
170
# Backup any old key files
171
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
173
shred --remove "$SECKEYFILE"
175
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
177
rm --force "$PUBKEYFILE"
180
FILECOMMENT="Mandos client key for $KEYNAME"
181
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
182
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
185
if [ -n "$KEYEMAIL" ]; then
186
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
189
# Export keys from key rings to key files
190
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
191
--no-default-keyring --no-options --secret-keyring "$SECRING" \
192
--keyring "$PUBRING" --export-options export-minimal \
193
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
195
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
196
--no-default-keyring --no-options --secret-keyring "$SECRING" \
197
--keyring "$PUBRING" --export-options export-minimal \
198
--comment "$FILECOMMENT" --output "$PUBKEYFILE" \
374
# Remove the password file, if any
375
if [ -n "$SECFILE" ]; then
376
shred --remove "$SECFILE"
378
203
# Remove the key rings
379
shred --remove "$RINGDIR"/sec* 2>/dev/null
380
rm --recursive --force "$RINGDIR"
204
shred --remove "$SECRING"
205
rm --force "$PUBRING"