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>.
26
KEYDIR="/etc/keys/mandos"
26
KEYNAME="`hostname --fqdn`"
31
KEYNAME="`hostname --fqdn 2>/dev/null || hostname`"
28
33
KEYCOMMENT="Mandos client key"
31
36
KEYCOMMENT_ORIG="$KEYCOMMENT"
39
if [ ! -d "$KEYDIR" ]; then
40
KEYDIR="/etc/mandos/keys"
34
TEMP=`getopt --options d:t:l:n:e:c:x:f \
35
--longoptions dir:,type:,length:,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 \
36
46
--name "$0" -- "$@"`
49
basename="`basename $0`"
51
Usage: $basename [ -v | --version ]
52
$basename [ -h | --help ]
55
Encrypted password creation:
56
$basename { -p | --password } [ --name NAME ] [ --dir DIR]
57
$basename { -F | --passfile } FILE [ --name NAME ] [ --dir DIR]
60
-v, --version Show program's version number and exit
61
-h, --help Show this help message and exit
62
-d DIR, --dir DIR Target directory for key files
63
-t TYPE, --type TYPE Key type. Default is DSA.
64
-l BITS, --length BITS
65
Key length in bits. Default is 2048.
66
-s TYPE, --subtype TYPE
67
Subkey type. Default is ELG-E.
68
-L BITS, --sublength BITS
69
Subkey length in bits. Default is 2048.
70
-n NAME, --name NAME Name of key. Default is the FQDN.
71
-e ADDRESS, --email ADDRESS
72
Email address of key. Default is empty.
73
-c TEXT, --comment TEXT
74
Comment field for key. The default value is
76
-x TIME, --expire TIME
77
Key expire time. Default is no expiration.
78
See gpg(1) for syntax.
79
-f, --force Force overwriting old key files.
81
Password creation options:
82
-p, --password Create an encrypted password using the key in
83
the key directory. All options other than
84
--dir and --name are ignored.
85
-F FILE, --passfile FILE
86
Encrypt a password from FILE using the key in
87
the key directory. All options other than
88
--dir and --name are ignored.
38
92
eval set -- "$TEMP"
95
-p|--password) mode=password; shift;;
96
-F|--passfile) mode=password; PASSFILE="$2"; shift 2;;
41
97
-d|--dir) KEYDIR="$2"; shift 2;;
42
98
-t|--type) KEYTYPE="$2"; shift 2;;
99
-s|--subtype) SUBKEYTYPE="$2"; shift 2;;
43
100
-l|--length) KEYLENGTH="$2"; shift 2;;
101
-L|--sublength) SUBKEYLENGTH="$2"; shift 2;;
44
102
-n|--name) KEYNAME="$2"; shift 2;;
45
103
-e|--email) KEYEMAIL="$2"; shift 2;;
46
104
-c|--comment) KEYCOMMENT="$2"; shift 2;;
47
-x|--expire) KEYCOMMENT="$2"; shift 2;;
105
-x|--expire) KEYEXPIRE="$2"; shift 2;;
48
106
-f|--force) FORCE=yes; shift;;
107
-v|--version) echo "$0 $VERSION"; exit;;
108
-h|--help) help; exit;;
49
109
--) shift; break;;
50
110
*) echo "Internal error" >&2; exit 1;;
59
119
PUBKEYFILE="$KEYDIR/pubkey.txt"
61
121
# Check for some invalid values
62
if [ -d "$KEYDIR" ]; then :; else
122
if [ ! -d "$KEYDIR" ]; then
63
123
echo "$KEYDIR not a directory" >&2
66
if [ -w "$KEYDIR" ]; then :; else
67
echo "Directory $KEYDIR not writeable" >&2
71
if [ -z "$KEYTYPE" ]; then
72
echo "Empty key type" >&2
76
if [ -z "$KEYNAME" ]; then
77
echo "Empty key name" >&2
81
if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
82
echo "Invalid key length" >&2
86
if [ -z "$KEYEXPIRE" ]; then
87
echo "Empty key expiration" >&2
91
# Make FORCE be 0 or 1
93
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
94
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
97
if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ]; } \
98
&& [ "$FORCE" -eq 0 ]; then
99
echo "Refusing to overwrite old key files; use --force" >&2
103
# Set lines for GPG batch file
104
if [ -n "$KEYCOMMENT" ]; then
105
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
107
if [ -n "$KEYEMAIL" ]; then
108
KEYEMAILLINE="Name-Email: $KEYEMAIL"
112
BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
113
SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
114
PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"
116
trap "rm --force $PUBRING $BATCHFILE; shred --remove $SECRING" EXIT
118
# Create batch file for GPG
119
cat >"$BATCHFILE" <<EOF
121
Key-Length: $KEYLENGTH
122
#Key-Usage: encrypt,sign,auth
126
Expire-Date: $KEYEXPIRE
133
gpg --no-random-seed-file --quiet --batch --no-tty \
134
--no-default-keyring --no-options --batch \
135
--secret-keyring "$SECRING" --keyring "$PUBRING" \
136
--gen-key "$BATCHFILE"
137
rm --force "$BATCHFILE"
139
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
141
shred --remove "$SECKEYFILE"
143
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
145
rm --force "$PUBKEYFILE"
148
FILECOMMENT="Mandos client key for $KEYNAME"
149
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
150
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
153
if [ -n "$KEYEMAIL" ]; then
154
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
157
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
158
--no-default-keyring --secret-keyring "$SECRING" \
159
--keyring "$PUBRING" --export-options export-minimal \
160
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
162
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
163
--no-default-keyring --secret-keyring "$SECRING" \
164
--keyring "$PUBRING" --export-options export-minimal \
165
--comment "$FILECOMMENT" --output "$PUBKEYFILE" \
126
if [ ! -r "$KEYDIR" ]; then
127
echo "Directory $KEYDIR not readable" >&2
131
if [ "$mode" = keygen ]; then
132
if [ ! -w "$KEYDIR" ]; then
133
echo "Directory $KEYDIR not writeable" >&2
136
if [ -z "$KEYTYPE" ]; then
137
echo "Empty key type" >&2
141
if [ -z "$KEYNAME" ]; then
142
echo "Empty key name" >&2
146
if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
147
echo "Invalid key length" >&2
151
if [ -z "$KEYEXPIRE" ]; then
152
echo "Empty key expiration" >&2
156
# Make FORCE be 0 or 1
158
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
159
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
162
if [ \( -e "$SECKEYFILE" -o -e "$PUBKEYFILE" \) \
163
-a "$FORCE" -eq 0 ]; then
164
echo "Refusing to overwrite old key files; use --force" >&2
168
# Set lines for GnuPG batch file
169
if [ -n "$KEYCOMMENT" ]; then
170
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
172
if [ -n "$KEYEMAIL" ]; then
173
KEYEMAILLINE="Name-Email: $KEYEMAIL"
176
# Create temporary gpg batch file
177
BATCHFILE="`mktemp -t mandos-keygen-batch.XXXXXXXXXX`"
180
if [ "$mode" = password ]; then
181
# Create temporary encrypted password file
182
SECFILE="`mktemp -t mandos-keygen-secfile.XXXXXXXXXX`"
185
# Create temporary key ring directory
186
RINGDIR="`mktemp -d -t mandos-keygen-keyrings.XXXXXXXXXX`"
188
# Remove temporary files on exit
191
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
192
shred --remove \"$RINGDIR\"/sec*;
193
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
194
rm --recursive --force \"$RINGDIR\";
195
tty --quiet && stty echo; \
202
if [ "$mode" = keygen ]; then
203
# Create batch file for GnuPG
204
cat >"$BATCHFILE" <<-EOF
206
Key-Length: $KEYLENGTH
207
#Key-Usage: encrypt,sign,auth
208
Subkey-Type: $SUBKEYTYPE
209
Subkey-Length: $SUBKEYLENGTH
210
#Subkey-Usage: encrypt,sign,auth
214
Expire-Date: $KEYEXPIRE
215
#Preferences: <string>
217
#%pubring pubring.gpg
218
#%secring secring.gpg
224
Note: Due to entropy requirements, key generation could take
225
anything from a few minutes to SEVERAL HOURS. Please be
226
patient and/or supply the system with more entropy if needed.
232
# Generate a new key in the key rings
233
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
234
--homedir "$RINGDIR" --trust-model always \
235
--gen-key "$BATCHFILE"
236
rm --force "$BATCHFILE"
243
# Backup any old key files
244
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
246
shred --remove "$SECKEYFILE"
248
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
250
rm --force "$PUBKEYFILE"
253
FILECOMMENT="Mandos client key for $KEYNAME"
254
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
255
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
258
if [ -n "$KEYEMAIL" ]; then
259
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
262
# Export key from key rings to key files
263
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
264
--homedir "$RINGDIR" --armor --export-options export-minimal \
265
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
267
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
268
--homedir "$RINGDIR" --armor --export-options export-minimal \
269
--comment "$FILECOMMENT" --output "$PUBKEYFILE" --export
272
if [ "$mode" = password ]; then
273
# Import key into temporary key rings
274
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
275
--homedir "$RINGDIR" --trust-model always --armor \
276
--import "$SECKEYFILE"
277
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
278
--homedir "$RINGDIR" --trust-model always --armor \
279
--import "$PUBKEYFILE"
281
# Get fingerprint of key
282
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
283
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
284
--fingerprint --with-colons \
286
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
288
test -n "$FINGERPRINT"
290
FILECOMMENT="Encrypted password for a Mandos client"
292
while [ ! -s "$SECFILE" ]; do
293
if [ -n "$PASSFILE" ]; then
296
tty --quiet && stty -echo
297
read -p "Enter passphrase: " first
298
tty --quiet && echo >&2
299
read -p "Repeat passphrase: " second
304
if [ "$first" != "$second" ]; then
305
echo "Passphrase mismatch" >&2
306
touch "$RINGDIR"/mismatch
310
fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
311
--homedir "$RINGDIR" --trust-model always --armor \
312
--encrypt --sign --recipient "$FINGERPRINT" --comment \
313
"$FILECOMMENT" > "$SECFILE"
314
if [ -e "$RINGDIR"/mismatch ]; then
315
rm --force "$RINGDIR"/mismatch
327
fingerprint = $FINGERPRINT
330
sed --quiet --expression='
331
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
333
# Remove 24-bit Radix-64 checksum
344
# Remove the password file, if any
345
if [ -n "$SECFILE" ]; then
346
shred --remove "$SECFILE"
348
# Remove the key rings
349
shred --remove "$RINGDIR"/sec*
350
rm --recursive --force "$RINGDIR"