20
20
# Contact the authors at <mandos@fukt.bsnet.se>.
25
KEYDIR="/etc/keys/mandos"
30
KEYNAME="`hostname --fqdn 2>/dev/null || hostname`"
30
KEYNAME="`hostname --fqdn`"
32
32
KEYCOMMENT="Mandos client key"
35
35
KEYCOMMENT_ORIG="$KEYCOMMENT"
38
if [ ! -d "$KEYDIR" ]; then
39
KEYDIR="/etc/mandos/keys"
43
TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:f \
44
--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 \
45
40
--name "$0" -- "$@"`
48
basename="`basename $0`"
50
Usage: $basename [ -v | --version ]
51
$basename [ -h | --help ]
54
Encrypted password creation:
55
$basename { -p | --password } [ --name NAME ] [ --dir DIR]
56
$basename { -F | --passfile } FILE [ --name NAME ] [ --dir DIR]
44
Usage: `basename $0` [options]
59
47
-v, --version Show program's version number and exit
60
48
-h, --help Show this help message and exit
61
49
-d DIR, --dir DIR Target directory for key files
62
50
-t TYPE, --type TYPE Key type. Default is DSA.
63
51
-l BITS, --length BITS
64
Key length in bits. Default is 2048.
52
Key length in bits. Default is 1024.
65
53
-s TYPE, --subtype TYPE
66
54
Subkey type. Default is ELG-E.
67
55
-L BITS, --sublength BITS
68
56
Subkey length in bits. Default is 2048.
69
57
-n NAME, --name NAME Name of key. Default is the FQDN.
70
-e ADDRESS, --email ADDRESS
58
-e EMAIL, --email EMAIL
71
59
Email address of key. Default is empty.
72
-c TEXT, --comment TEXT
60
-c COMMENT, --comment COMMENT
73
61
Comment field for key. The default value is
74
62
"Mandos client key".
75
63
-x TIME, --expire TIME
76
64
Key expire time. Default is no expiration.
77
65
See gpg(1) for syntax.
78
-f, --force Force overwriting old key files.
80
Password creation options:
81
-p, --password Create an encrypted password using the key in
82
the key directory. All options other than
83
--dir and --name are ignored.
84
-F FILE, --passfile FILE
85
Encrypt a password from FILE using the key in
86
the key directory. All options other than
87
--dir and --name are ignored.
66
-f, --force Force overwriting old keys.
91
70
eval set -- "$TEMP"
94
-p|--password) mode=password; shift;;
95
-F|--passfile) mode=password; PASSFILE="$2"; shift 2;;
96
73
-d|--dir) KEYDIR="$2"; shift 2;;
97
74
-t|--type) KEYTYPE="$2"; shift 2;;
98
75
-s|--subtype) SUBKEYTYPE="$2"; shift 2;;
118
95
PUBKEYFILE="$KEYDIR/pubkey.txt"
120
97
# Check for some invalid values
121
if [ ! -d "$KEYDIR" ]; then
98
if [ -d "$KEYDIR" ]; then :; else
122
99
echo "$KEYDIR not a directory" >&2
125
if [ ! -r "$KEYDIR" ]; then
126
echo "Directory $KEYDIR not readable" >&2
130
if [ "$mode" = keygen ]; then
131
if [ ! -w "$KEYDIR" ]; then
132
echo "Directory $KEYDIR not writeable" >&2
135
if [ -z "$KEYTYPE" ]; then
136
echo "Empty key type" >&2
140
if [ -z "$KEYNAME" ]; then
141
echo "Empty key name" >&2
145
if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
146
echo "Invalid key length" >&2
150
if [ -z "$KEYEXPIRE" ]; then
151
echo "Empty key expiration" >&2
155
# Make FORCE be 0 or 1
157
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
158
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
161
if [ \( -e "$SECKEYFILE" -o -e "$PUBKEYFILE" \) \
162
-a "$FORCE" -eq 0 ]; then
163
echo "Refusing to overwrite old key files; use --force" >&2
167
# Set lines for GnuPG batch file
168
if [ -n "$KEYCOMMENT" ]; then
169
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
171
if [ -n "$KEYEMAIL" ]; then
172
KEYEMAILLINE="Name-Email: $KEYEMAIL"
175
# Create temporary gpg batch file
176
BATCHFILE="`mktemp -t mandos-keygen-batch.XXXXXXXXXX`"
179
if [ "$mode" = password ]; then
180
# Create temporary encrypted password file
181
SECFILE="`mktemp -t mandos-keygen-secfile.XXXXXXXXXX`"
184
# Create temporary key ring directory
185
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: $KEYEMAIL"
148
BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
149
SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
150
PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"
187
152
# Remove temporary files on exit
190
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
191
shred --remove \"$RINGDIR\"/sec*;
192
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
193
rm --recursive --force \"$RINGDIR\";
155
rm --force $PUBRING $BATCHFILE; \
156
shred --remove $SECRING; \
199
if [ "$mode" = keygen ]; then
200
# Create batch file for GnuPG
201
cat >"$BATCHFILE" <<-EOF
203
Key-Length: $KEYLENGTH
204
#Key-Usage: encrypt,sign,auth
205
Subkey-Type: $SUBKEYTYPE
206
Subkey-Length: $SUBKEYLENGTH
207
#Subkey-Usage: encrypt,sign,auth
211
Expire-Date: $KEYEXPIRE
212
#Preferences: <string>
214
#%pubring pubring.gpg
215
#%secring secring.gpg
219
# Generate a new key in the key rings
220
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
221
--homedir "$RINGDIR" --trust-model always \
222
--gen-key "$BATCHFILE"
223
rm --force "$BATCHFILE"
225
# Backup any old key files
226
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
228
shred --remove "$SECKEYFILE"
230
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
232
rm --force "$PUBKEYFILE"
235
FILECOMMENT="Mandos client key for $KEYNAME"
236
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
237
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
240
if [ -n "$KEYEMAIL" ]; then
241
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
244
# Export key from key rings to key files
245
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
246
--homedir "$RINGDIR" --armor --export-options export-minimal \
247
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
249
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
250
--homedir "$RINGDIR" --armor --export-options export-minimal \
251
--comment "$FILECOMMENT" --output "$PUBKEYFILE" --export
254
if [ "$mode" = password ]; then
255
# Import key into temporary key rings
256
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
257
--homedir "$RINGDIR" --trust-model always --armor \
258
--import "$SECKEYFILE"
259
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
260
--homedir "$RINGDIR" --trust-model always --armor \
261
--import "$PUBKEYFILE"
263
# Get fingerprint of key
264
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
265
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
266
--fingerprint --with-colons \
268
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
270
test -n "$FINGERPRINT"
272
FILECOMMENT="Encrypted password for a Mandos client"
274
if [ -n "$PASSFILE" ]; then
278
echo -n "Enter passphrase: " >&2
279
first="$(head --lines=1 | tr --delete '\n')"
280
echo -n -e "\nRepeat passphrase: " >&2
281
second="$(head --lines=1 | tr --delete '\n')"
284
if [ "$first" != "$second" ]; then
285
echo -e "Passphrase mismatch" >&2
290
fi | gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
291
--homedir "$RINGDIR" --trust-model always --armor --encrypt \
292
--sign --recipient "$FINGERPRINT" --comment "$FILECOMMENT" \
294
status="${PIPESTATUS[0]}"
295
if [ "$status" -ne 0 ]; then
302
fingerprint = $FINGERPRINT
305
sed --quiet --expression='
306
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
308
# Remove 24-bit Radix-64 checksum
160
# Create batch file for GnuPG
161
cat >"$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
319
# Remove the password file, if any
320
if [ -n "$SECFILE" ]; then
321
shred --remove "$SECFILE"
323
221
# Remove the key rings
324
shred --remove "$RINGDIR"/sec*
325
rm --recursive --force "$RINGDIR"
222
shred --remove "$SECRING"
223
rm --force "$PUBRING"