21
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`"
33
32
KEYCOMMENT="Mandos client key"
36
35
KEYCOMMENT_ORIG="$KEYCOMMENT"
39
if [ ! -d "$KEYDIR" ]; then
40
KEYDIR="/etc/mandos/keys"
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 \
38
TEMP=`getopt --options vhd:t:l:n:e:c:x:f \
39
--longoptions version,help,dir:,type:,length:,name:,email:,comment:,expire:,force \
46
40
--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]
44
Usage: `basename $0` [options]
60
47
-v, --version Show program's version number and exit
61
48
-h, --help Show this help message and exit
62
49
-d DIR, --dir DIR Target directory for key files
63
50
-t TYPE, --type TYPE Key type. Default is DSA.
64
51
-l BITS, --length BITS
65
Key length in bits. Default is 2048.
52
Key length in bits. Default is 1024.
66
53
-s TYPE, --subtype TYPE
67
54
Subkey type. Default is ELG-E.
68
55
-L BITS, --sublength BITS
69
56
Subkey length in bits. Default is 2048.
70
57
-n NAME, --name NAME Name of key. Default is the FQDN.
71
-e ADDRESS, --email ADDRESS
58
-e EMAIL, --email EMAIL
72
59
Email address of key. Default is empty.
73
-c TEXT, --comment TEXT
60
-c COMMENT, --comment COMMENT
74
61
Comment field for key. The default value is
75
62
"Mandos client key".
76
63
-x TIME, --expire TIME
77
64
Key expire time. Default is no expiration.
78
65
See gpg(1) for syntax.
79
-f, --force Force overwriting old key files.
81
Password creation options:
82
-p, --password Create an encrypted password using the key in
83
the key directory. All options other than
84
--dir and --name are ignored.
85
-F FILE, --passfile FILE
86
Encrypt a password from FILE using the key in
87
the key directory. All options other than
88
--dir and --name are ignored.
66
-f, --force Force overwriting old keys.
92
70
eval set -- "$TEMP"
95
-p|--password) mode=password; shift;;
96
-F|--passfile) mode=password; PASSFILE="$2"; shift 2;;
97
73
-d|--dir) KEYDIR="$2"; shift 2;;
98
74
-t|--type) KEYTYPE="$2"; shift 2;;
99
75
-s|--subtype) SUBKEYTYPE="$2"; shift 2;;
119
95
PUBKEYFILE="$KEYDIR/pubkey.txt"
121
97
# Check for some invalid values
122
if [ ! -d "$KEYDIR" ]; then
98
if [ -d "$KEYDIR" ]; then :; else
123
99
echo "$KEYDIR not a directory" >&2
126
if [ ! -r "$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`"
102
if [ -w "$KEYDIR" ]; then :; else
103
echo "Directory $KEYDIR not writeable" >&2
107
if [ -z "$KEYTYPE" ]; then
108
echo "Empty key type" >&2
112
if [ -z "$KEYNAME" ]; then
113
echo "Empty key name" >&2
117
if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
118
echo "Invalid key length" >&2
122
if [ -z "$KEYEXPIRE" ]; then
123
echo "Empty key expiration" >&2
127
# Make FORCE be 0 or 1
129
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
130
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
133
if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ]; } \
134
&& [ "$FORCE" -eq 0 ]; then
135
echo "Refusing to overwrite old key files; use --force" >&2
139
# Set lines for GnuPG batch file
140
if [ -n "$KEYCOMMENT" ]; then
141
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
143
if [ -n "$KEYEMAIL" ]; then
144
KEYEMAILLINE="Name-Email: $KEYEMAIL"
148
BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
149
SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
150
PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"
188
152
# Remove temporary files on exit
191
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
192
shred --remove \"$RINGDIR\"/sec*;
193
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
194
rm --recursive --force \"$RINGDIR\";
155
rm --force $PUBRING $BATCHFILE; \
156
shred --remove $SECRING; \
202
if [ "$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 "$FINGERPRINT"
290
FILECOMMENT="Encrypted password for a Mandos client"
292
if [ -n "$PASSFILE" ]; then
296
echo -n "Enter passphrase: " >&2
297
first="$(head --lines=1 | tr --delete '\n')"
299
echo -n "Repeat passphrase: " >&2
300
second="$(head --lines=1 | tr --delete '\n')"
303
if [ "$first" != "$second" ]; then
304
echo "Passphrase mismatch" >&2
305
touch "$RINGDIR"/mismatch
309
fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
310
--homedir "$RINGDIR" --trust-model always --armor --encrypt \
311
--sign --recipient "$FINGERPRINT" --comment "$FILECOMMENT" \
313
if [ -e "$RINGDIR"/mismatch ]; then
314
rm --force "$RINGDIR"/mismatch
321
fingerprint = $FINGERPRINT
324
sed --quiet --expression='
325
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
327
# Remove 24-bit Radix-64 checksum
160
# Create batch file for GnuPG
161
cat >"$BATCHFILE" <<EOF
163
Key-Length: $KEYLENGTH
164
#Key-Usage: encrypt,sign,auth
165
Subkey-Type: $SUBKEYTYPE
166
Subkey-Length: $SUBKEYLENGTH
167
#Subkey-Usage: encrypt,sign,auth
171
Expire-Date: $KEYEXPIRE
172
#Preferences: <string>
181
# Generate a new key in the key rings
182
gpg --no-random-seed-file --quiet --batch --no-tty \
183
--no-default-keyring --no-options --enable-dsa2 \
184
--secret-keyring "$SECRING" --keyring "$PUBRING" \
185
--gen-key "$BATCHFILE"
186
rm --force "$BATCHFILE"
188
# Backup any old key files
189
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
191
shred --remove "$SECKEYFILE"
193
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
195
rm --force "$PUBKEYFILE"
198
FILECOMMENT="Mandos client key for $KEYNAME"
199
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
200
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
203
if [ -n "$KEYEMAIL" ]; then
204
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
207
# Export keys from key rings to key files
208
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
209
--no-default-keyring --no-options --enable-dsa2 \
210
--secret-keyring "$SECRING" --keyring "$PUBRING" \
211
--export-options export-minimal --comment "$FILECOMMENT" \
212
--output "$SECKEYFILE" --export-secret-keys
213
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
214
--no-default-keyring --no-options --enable-dsa2 \
215
--secret-keyring "$SECRING" --keyring "$PUBRING" \
216
--export-options export-minimal --comment "$FILECOMMENT" \
217
--output "$PUBKEYFILE" --export
338
# Remove the password file, if any
339
if [ -n "$SECFILE" ]; then
340
shred --remove "$SECFILE"
342
221
# Remove the key rings
343
shred --remove "$RINGDIR"/sec*
344
rm --recursive --force "$RINGDIR"
222
shred --remove "$SECRING"
223
rm --force "$PUBRING"