1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
=head1 NAME
gpg - GNU Privacy Guard
=head1 SYNOPSIS
B<gpg> [--homedir name] [--options file] [options] command [args]
=head1 DESCRIPTION
This is the main program from the GNUPG system.
=head1 COMMANDS
B<gpg> recognizes these commands:
B<-s>, B<--sign>
Make a signature. This option maybe combined
with B<--encrypt>.
B<--clearsign>
Make a clear text signature.
B<-b>, B<--detach-sign>
Make a detached signature.
B<-e>, B<--encrypt>
Encrypt data. This option may be combined with B<--sign>.
B<-c>, B<--symmetric>
Encrypt only with symmetric cipher
This command asks for a passphrase.
B<--store>
store only (make a RFC1991 packet).
B<-d>, B<--decrypt>
Decrypt data. This is the default operation for data
files.
B<-k> [I<keyring>]
Kludge to be somewhat compatibe to PGP.
Without arguments, all public key-rings are listed,
with one argument, only I<keyring> is listed.
Special combinations are also allowed, but it may
give starnge results when combined with more options.
B<-kv> Same as B<-k>
B<-kvv> List the signatures with every key.
B<-kvvv> Additional check all signatures.
B<-kvc> List fingerprints
B<-kvvc> List fingerprints and signatures
B<--list-keys>
List all keys in all public key-rings and check the
signatures.
B<--check-keys>
Check signatures on a key in the keyring
B<--fingerprint>
Show the fingerprints
B<--list-packets>
List only the sequence of packets. This is mainly
useful for debugging.
B<--gen-key>
Generate a new key pair. This command can only be
used interactive.
B<--sign-key> I<name>
Make a signature on key of user I<name>.
This looks for the key, displays the key and checks
all existing signatures of this key. If the key is
not yet signed by the default user (or the users given
with B<-u>), the program displays the information of
the key again, together with it's fingerprint and
asked whether it should be signed. This question
is repeated for all users specified with B<-u>.
The key is then signed and the keyring which
contains the key is updated.
B<--delete-key>
Remove key from the public keyring
B<--edit-sig>
Edit/remove a key signature.
B<--change-passphrase>
Change the passphrase of your secret keyring
B<--gen-revoke>
Generate a revocation certificate.
B<--export> [I<names>]
Either export all keys from all key-rings (default
key-rings and those registered via option B<--keyring>,
or if at least one name is given, those of the given
name. The new keyring is written to F<stdout> or to
the file given with option "output". Use together
with B<-a> to mail those keys.
B<--import>
import/merge keys
=head1 OPTIONS
Long options can be put in an options file (default F<~/.gnupg/options>);
do not write the 2 dashes, but simply the name of the option and any
arguments if required, lines with a hash as the first non-white-space
character are ignored. Commands maybe put in this file too, but that
does not make sense.
B<gpg> recognizes these options:
B<-a>, B<--armor>
Create ASCII armored output.
B<-o> I<file>, B<--output> I<file>
Write output to I<file>.
B<-u> I<name>, B<--local-user> I<name>
Use I<name> as the user-id to sign.
B<-r> I<name>, B<--remote-user> I<name>
Use I<name> as the user-id for encryption.
B<-v>, B<--verbose>
Give more informations during processing. If used
2 times, the input data is listed in detail.
B<-z> I<n>
Set compress level to I<n>. A value of 0 for I<n>
disables compression. Default is to use the default
compression level of zlib (which is 6).
B<-t>, B<--textmode>
Use canonical text mode. Used to make clear-text
signatures.
B<-n>, B<--dry-run>
Don't make any changes (not yet implemented).
B<--batch>
Batch mode; never ask, do not allow interactive
commands.
B<--no-batch>
Disable batch mode; this may be used if B<batch>
is used in the options file.
B<--yes>
Assume yes on most questions.
B<--no>
Assume no on most questions.
B<--keyring> I<file>
Add I<file> to the list of key-rings.
If I<file> begins with a tilde and a slash, these
are replaced by the HOME directory. If the filename
does not contain a slash, it is assumed to be in the
home-directory (F<~/.gnupg> if B<--homedir>) is not used.
B<--secret-keyring> I<file>
Same as B<--keyring> but for secret key-rings.
B<--homedir> I<dir>
Set the name of the home directory to I<dir>. If this
option is not used it defaults to F<~/.gnupg>. It does
not make sense to use this in a options file. This
also overrides the environment variable C<GNUPGHOME>.
B<--options> I<file>
Read options from I<file> and do not try to read
them from the default options file in the homedir
(see B<--homedir>). This option is ignored when used
in an options file.
B<no-options>
Shortcut for B<--options> I</dev/null>. This option is
detected before an attempt to open an option file.
B<--debug> I<flags>
Set debugging flags. All flags are or-ed and I<flags> may
be given in C syntax (e.g. 0x0042).
B<--debug-all>
Set all useful debugging flags.
B<--status-fd> I<n>
Write special status strings to the file descriptor I<n>.
B<--no-comment>
Do not write comment packets.
B<--completes-needed> I<n>
Number of completey trusted users to introduce a new
key signator (defaults to 1).
B<--marginals-needed> I<n>
Number of marginally trusted users to introduce a new
key signator (defaults to 3)
B<--cipher-algo> I<name>
Use I<name> as cipher algorithm. Running the program
with the option B<--verbose> yields a list off supported
algorithms.
B<--pubkey-algo> I<name>
Use I<name> as puplic key algorithm. Running the program
with the option B<--verbose> yields a list off supported
algorithms.
B<--digest-algo> I<name>
Use I<name> as message digest algorithm. Running the
program with the option B<--verbose> yields a list off
supported algorithms.
B<--passphrase-fd> I<n>
Read the passphrase from file descriptor I<n>. If you use
0 for I<n>, the passphrase will be read from stdin. This
can only be used if only one passphrase is supplied.
B<Don't use this option if you can avoid it>
B<no-verbose>
Reset verbose level to 0.
B<no-greeting>
Suppress the initial copyright message but do not
enter batch mode.
B<no-armor>
Assume the input data is not in ASCCI armored format.
B<no-default-keyring>
Do not add the default key-rings to the list of
key-rings.
B<--version>
Print version information along with a list
of supported algorithms.
B<--warranty>
Print warranty information.
B<-h>, B<--help>
Print usage information.
=head1 RETURN VALUE
The Program returns 0 if everything was fine, 1 if at least
a signature was bad and other errorcode for fatal errors.
=head1 EXAMPLES
-se -r Bob [file] sign and encrypt for user Bob
-sat [file] make a clear text signature
-sb [file] make a detached signature
-k [userid] show keys
-kc [userid] show fingerprint
=head1 ENVIRONMENT
C<HOME> Used to locate the default home directory.
C<GNUPGHOME> If set, direcory used instead of F<~/.gnupg>.
=head1 FILES
F<~/.gnupg/secring.gpg> The secret key-ring
F<~/.gnupg/pubring.gpg> The public key-ring
F<~/.gnupg/trustdb.gpg> The trust database
F<~/.gnupg/gnupg.gpg> Signature of GNUPG files.
F<~/.gnupg/options> May contain options
=head1 SEE ALSO
gpgm(1) gpgk(1)
=head1 WARNINGS
Use a B<good> password for your user account and a non-simple passphrase
to protect your secret key.
Keep in mind that, if this program is used over a network (telnet), it
is B<very> easy to spy out your passphrase!
|
