20
20
# Contact the authors at <mandos@fukt.bsnet.se>.
25
KEYDIR="/etc/keys/mandos"
30
26
KEYNAME="`hostname --fqdn`"
32
28
KEYCOMMENT="Mandos client key"
35
31
KEYCOMMENT_ORIG="$KEYCOMMENT"
38
if [ ! -d "$KEYDIR" ]; then
39
KEYDIR="/etc/mandos/keys"
43
TEMP=`getopt --options vhd:t:l:n:e:c:x:f \
44
--longoptions version,help,password,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force \
34
TEMP=`getopt --options d:t:l:n:e:c:x:f \
35
--longoptions dir:,type:,length:,name:,email:,comment:,expire:,force \
45
36
--name "$0" -- "$@"`
48
basename="`basename $0`"
50
Usage: $basename [ -v | --version ]
51
$basename [ -h | --help ]
54
Encrypted password creation:
55
$basename { -p | --password } [ --name NAME ] [ --dir DIR]
58
-v, --version Show program's version number and exit
59
-h, --help Show this help message and exit
60
-d DIR, --dir DIR Target directory for key files
61
-t TYPE, --type TYPE Key type. Default is DSA.
62
-l BITS, --length BITS
63
Key length in bits. Default is 2048.
64
-s TYPE, --subtype TYPE
65
Subkey type. Default is ELG-E.
66
-L BITS, --sublength BITS
67
Subkey length in bits. Default is 2048.
68
-n NAME, --name NAME Name of key. Default is the FQDN.
69
-e ADDRESS, --email ADDRESS
70
Email address of key. Default is empty.
71
-c TEXT, --comment TEXT
72
Comment field for key. The default value is
74
-x TIME, --expire TIME
75
Key expire time. Default is no expiration.
76
See gpg(1) for syntax.
77
-f, --force Force overwriting old keys.
79
Password creation options:
80
-p, --password Create an encrypted password using the keys in
81
the key directory. All options other than
82
--dir and --name are ignored.
86
38
eval set -- "$TEMP"
89
-p|--password) mode=password; shift;;
90
41
-d|--dir) KEYDIR="$2"; shift 2;;
91
42
-t|--type) KEYTYPE="$2"; shift 2;;
92
-s|--subtype) SUBKEYTYPE="$2"; shift 2;;
93
43
-l|--length) KEYLENGTH="$2"; shift 2;;
94
-L|--sublength) SUBKEYLENGTH="$2"; shift 2;;
95
44
-n|--name) KEYNAME="$2"; shift 2;;
96
45
-e|--email) KEYEMAIL="$2"; shift 2;;
97
46
-c|--comment) KEYCOMMENT="$2"; shift 2;;
98
-x|--expire) KEYEXPIRE="$2"; shift 2;;
47
-x|--expire) KEYCOMMENT="$2"; shift 2;;
99
48
-f|--force) FORCE=yes; shift;;
100
-v|--version) echo "$0 $VERSION"; exit;;
101
-h|--help) help; exit;;
102
49
--) shift; break;;
103
50
*) echo "Internal error" >&2; exit 1;;
112
59
PUBKEYFILE="$KEYDIR/pubkey.txt"
114
61
# Check for some invalid values
115
if [ ! -d "$KEYDIR" ]; then
62
if [ -d "$KEYDIR" ]; then :; else
116
63
echo "$KEYDIR not a directory" >&2
119
if [ ! -r "$KEYDIR" ]; then
120
echo "Directory $KEYDIR not readable" >&2
124
if [ "$mode" = keygen ]; then
125
if [ ! -w "$KEYDIR" ]; then
126
echo "Directory $KEYDIR not writeable" >&2
129
if [ -z "$KEYTYPE" ]; then
130
echo "Empty key type" >&2
134
if [ -z "$KEYNAME" ]; then
135
echo "Empty key name" >&2
139
if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
140
echo "Invalid key length" >&2
144
if [ -z "$KEYEXPIRE" ]; then
145
echo "Empty key expiration" >&2
149
# Make FORCE be 0 or 1
151
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
152
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
155
if [ \( -e "$SECKEYFILE" -o -e "$PUBKEYFILE" \) \
156
-a "$FORCE" -eq 0 ]; then
157
echo "Refusing to overwrite old key files; use --force" >&2
161
# Set lines for GnuPG batch file
162
if [ -n "$KEYCOMMENT" ]; then
163
KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
165
if [ -n "$KEYEMAIL" ]; then
166
KEYEMAILLINE="Name-Email: $KEYEMAIL"
169
# Create temporary gpg batch file
170
BATCHFILE="`mktemp -t mandos-keygen-batch.XXXXXXXXXX`"
173
if [ "$mode" = password ]; then
174
# Create temporary encrypted password file
175
SECFILE="`mktemp -t mandos-keygen-secfile.XXXXXXXXXX`"
178
# Create temporary key ring directory
179
RINGDIR="`mktemp -d -t mandos-keygen-keyrings.XXXXXXXXXX`"
181
# Remove temporary files on exit
184
test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
185
shred --remove \"$RINGDIR\"/sec*;
186
test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
187
rm --recursive --force \"$RINGDIR\";
193
if [ "$mode" = keygen ]; then
194
# Create batch file for GnuPG
195
cat >"$BATCHFILE" <<-EOF
197
Key-Length: $KEYLENGTH
198
#Key-Usage: encrypt,sign,auth
199
Subkey-Type: $SUBKEYTYPE
200
Subkey-Length: $SUBKEYLENGTH
201
#Subkey-Usage: encrypt,sign,auth
205
Expire-Date: $KEYEXPIRE
206
#Preferences: <string>
208
#%pubring pubring.gpg
209
#%secring secring.gpg
213
# Generate a new key in the key rings
214
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
215
--homedir "$RINGDIR" --trust-model always \
216
--gen-key "$BATCHFILE"
217
rm --force "$BATCHFILE"
219
# Backup any old key files
220
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
222
shred --remove "$SECKEYFILE"
224
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
226
rm --force "$PUBKEYFILE"
229
FILECOMMENT="Mandos client key for $KEYNAME"
230
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
231
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
234
if [ -n "$KEYEMAIL" ]; then
235
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
238
# Export keys from key rings to key files
239
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
240
--homedir "$RINGDIR" --armor --export-options export-minimal \
241
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
243
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
244
--homedir "$RINGDIR" --armor --export-options export-minimal \
245
--comment "$FILECOMMENT" --output "$PUBKEYFILE" --export
248
if [ "$mode" = password ]; then
249
# Import keys into temporary key rings
250
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
251
--homedir "$RINGDIR" --trust-model always --armor \
252
--import "$SECKEYFILE"
253
gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
254
--homedir "$RINGDIR" --trust-model always --armor \
255
--import "$PUBKEYFILE"
257
# Get fingerprint of key
258
FINGERPRINT="`gpg --quiet --batch --no-tty --no-options \
259
--enable-dsa2 --homedir \"$RINGDIR\" --trust-model always \
260
--fingerprint --with-colons \
262
--expression='/^fpr:/{s/^fpr:.*:\\([0-9A-Z]*\\):\$/\\1/p;q}'`"
264
test -n "$FINGERPRINT"
266
FILECOMMENT="Encrypted password for a Mandos client"
269
echo -n "Enter passphrase: " >&2
270
head --lines=1 | tr --delete '\n' \
271
| gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
272
--homedir "$RINGDIR" --trust-model always --armor --encrypt \
273
--recipient "$FINGERPRINT" --comment "$FILECOMMENT" \
281
fingerprint = $FINGERPRINT
66
if [ -w "$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: $KEYEXPIRE
284
sed --quiet --expression='
285
/^-----BEGIN PGP MESSAGE-----$/,/^-----END PGP MESSAGE-----$/{
287
# Remove 24-bit Radix-64 checksum
298
# Remove the password file, if any
299
if [ -n "$SECFILE" ]; then
300
shred --remove "$SECFILE"
302
# Remove the key rings
303
shred --remove "$RINGDIR"/sec*
304
rm --recursive --force "$RINGDIR"
133
gpg --no-random-seed-file --quiet --batch --no-tty \
134
--no-default-keyring --batch --secret-keyring "$SECRING" \
135
--keyring "$PUBRING" --gen-key "$BATCHFILE"
136
rm --force "$BATCHFILE"
138
if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
140
shred --remove "$SECKEYFILE"
142
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
144
rm --force "$PUBKEYFILE"
147
FILECOMMENT="Mandos client key for $KEYNAME"
148
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
149
FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
152
if [ -n "$KEYEMAIL" ]; then
153
FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
156
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
157
--no-default-keyring --secret-keyring "$SECRING" \
158
--keyring "$PUBRING" --export-options export-minimal \
159
--comment "$FILECOMMENT" --output "$SECKEYFILE" \
161
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
162
--no-default-keyring --secret-keyring "$SECRING" \
163
--keyring "$PUBRING" --export-options export-minimal \
164
--comment "$FILECOMMENT" --output "$PUBKEYFILE" \