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mandos-keygen.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4
 
<!ENTITY COMMANDNAME "mandos-keygen">
5
 
<!ENTITY TIMESTAMP "2018-02-08">
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<!ENTITY % common SYSTEM "common.ent">
7
 
%common;
8
 
]>
9
 
 
10
 
<refentry xmlns:xi="http://www.w3.org/2001/XInclude">
11
 
  <refentryinfo>
12
 
    <title>Mandos Manual</title>
13
 
    <!-- NWalsh’s docbook scripts use this to generate the footer: -->
14
 
    <productname>Mandos</productname>
15
 
    <productnumber>&version;</productnumber>
16
 
    <date>&TIMESTAMP;</date>
17
 
    <authorgroup>
18
 
      <author>
19
 
        <firstname>Björn</firstname>
20
 
        <surname>Påhlsson</surname>
21
 
        <address>
22
 
          <email>belorn@recompile.se</email>
23
 
        </address>
24
 
      </author>
25
 
      <author>
26
 
        <firstname>Teddy</firstname>
27
 
        <surname>Hogeborn</surname>
28
 
        <address>
29
 
          <email>teddy@recompile.se</email>
30
 
        </address>
31
 
      </author>
32
 
    </authorgroup>
33
 
    <copyright>
34
 
      <year>2008</year>
35
 
      <year>2009</year>
36
 
      <year>2010</year>
37
 
      <year>2011</year>
38
 
      <year>2012</year>
39
 
      <year>2013</year>
40
 
      <year>2014</year>
41
 
      <year>2015</year>
42
 
      <year>2016</year>
43
 
      <year>2017</year>
44
 
      <year>2018</year>
45
 
      <holder>Teddy Hogeborn</holder>
46
 
      <holder>Björn Påhlsson</holder>
47
 
    </copyright>
48
 
    <xi:include href="legalnotice.xml"/>
49
 
  </refentryinfo>
50
 
  
51
 
  <refmeta>
52
 
    <refentrytitle>&COMMANDNAME;</refentrytitle>
53
 
    <manvolnum>8</manvolnum>
54
 
  </refmeta>
55
 
  
56
 
  <refnamediv>
57
 
    <refname><command>&COMMANDNAME;</command></refname>
58
 
    <refpurpose>
59
 
      Generate key and password for Mandos client and server.
60
 
    </refpurpose>
61
 
  </refnamediv>
62
 
  
63
 
  <refsynopsisdiv>
64
 
    <cmdsynopsis>
65
 
      <command>&COMMANDNAME;</command>
66
 
      <group>
67
 
        <arg choice="plain"><option>--dir
68
 
        <replaceable>DIRECTORY</replaceable></option></arg>
69
 
        <arg choice="plain"><option>-d
70
 
        <replaceable>DIRECTORY</replaceable></option></arg>
71
 
      </group>
72
 
      <sbr/>
73
 
      <group>
74
 
        <arg choice="plain"><option>--type
75
 
        <replaceable>KEYTYPE</replaceable></option></arg>
76
 
        <arg choice="plain"><option>-t
77
 
        <replaceable>KEYTYPE</replaceable></option></arg>
78
 
      </group>
79
 
      <sbr/>
80
 
      <group>
81
 
        <arg choice="plain"><option>--length
82
 
        <replaceable>BITS</replaceable></option></arg>
83
 
        <arg choice="plain"><option>-l
84
 
        <replaceable>BITS</replaceable></option></arg>
85
 
      </group>
86
 
      <sbr/>
87
 
      <group>
88
 
        <arg choice="plain"><option>--subtype
89
 
        <replaceable>KEYTYPE</replaceable></option></arg>
90
 
        <arg choice="plain"><option>-s
91
 
        <replaceable>KEYTYPE</replaceable></option></arg>
92
 
      </group>
93
 
      <sbr/>
94
 
      <group>
95
 
        <arg choice="plain"><option>--sublength
96
 
        <replaceable>BITS</replaceable></option></arg>
97
 
        <arg choice="plain"><option>-L
98
 
        <replaceable>BITS</replaceable></option></arg>
99
 
      </group>
100
 
      <sbr/>
101
 
      <group>
102
 
        <arg choice="plain"><option>--name
103
 
        <replaceable>NAME</replaceable></option></arg>
104
 
        <arg choice="plain"><option>-n
105
 
        <replaceable>NAME</replaceable></option></arg>
106
 
      </group>
107
 
      <sbr/>
108
 
      <group>
109
 
        <arg choice="plain"><option>--email
110
 
        <replaceable>ADDRESS</replaceable></option></arg>
111
 
        <arg choice="plain"><option>-e
112
 
        <replaceable>ADDRESS</replaceable></option></arg>
113
 
      </group>
114
 
      <sbr/>
115
 
      <group>
116
 
        <arg choice="plain"><option>--comment
117
 
        <replaceable>TEXT</replaceable></option></arg>
118
 
        <arg choice="plain"><option>-c
119
 
        <replaceable>TEXT</replaceable></option></arg>
120
 
      </group>
121
 
      <sbr/>
122
 
      <group>
123
 
        <arg choice="plain"><option>--expire
124
 
        <replaceable>TIME</replaceable></option></arg>
125
 
        <arg choice="plain"><option>-x
126
 
        <replaceable>TIME</replaceable></option></arg>
127
 
      </group>
128
 
      <sbr/>
129
 
      <group>
130
 
        <arg choice="plain"><option>--force</option></arg>
131
 
        <arg choice="plain"><option>-f</option></arg>
132
 
      </group>
133
 
    </cmdsynopsis>
134
 
    <cmdsynopsis>
135
 
      <command>&COMMANDNAME;</command>
136
 
      <group choice="req">
137
 
        <arg choice="plain"><option>--password</option></arg>
138
 
        <arg choice="plain"><option>-p</option></arg>
139
 
        <arg choice="plain"><option>--passfile
140
 
        <replaceable>FILE</replaceable></option></arg>
141
 
        <arg choice="plain"><option>-F</option>
142
 
        <replaceable>FILE</replaceable></arg>
143
 
      </group>
144
 
      <sbr/>
145
 
      <group>
146
 
        <arg choice="plain"><option>--dir
147
 
        <replaceable>DIRECTORY</replaceable></option></arg>
148
 
        <arg choice="plain"><option>-d
149
 
        <replaceable>DIRECTORY</replaceable></option></arg>
150
 
      </group>
151
 
      <sbr/>
152
 
      <group>
153
 
        <arg choice="plain"><option>--name
154
 
        <replaceable>NAME</replaceable></option></arg>
155
 
        <arg choice="plain"><option>-n
156
 
        <replaceable>NAME</replaceable></option></arg>
157
 
      </group>
158
 
      <group>
159
 
        <arg choice="plain"><option>--no-ssh</option></arg>
160
 
        <arg choice="plain"><option>-S</option></arg>
161
 
      </group>
162
 
    </cmdsynopsis>
163
 
    <cmdsynopsis>
164
 
      <command>&COMMANDNAME;</command>
165
 
      <group choice="req">
166
 
        <arg choice="plain"><option>--help</option></arg>
167
 
        <arg choice="plain"><option>-h</option></arg>
168
 
      </group>
169
 
    </cmdsynopsis>
170
 
    <cmdsynopsis>
171
 
      <command>&COMMANDNAME;</command>
172
 
      <group choice="req">
173
 
        <arg choice="plain"><option>--version</option></arg>
174
 
        <arg choice="plain"><option>-v</option></arg>
175
 
      </group>
176
 
    </cmdsynopsis>
177
 
  </refsynopsisdiv>
178
 
  
179
 
  <refsect1 id="description">
180
 
    <title>DESCRIPTION</title>
181
 
    <para>
182
 
      <command>&COMMANDNAME;</command> is a program to generate the
183
 
      OpenPGP key used by
184
 
      <citerefentry><refentrytitle>mandos-client</refentrytitle>
185
 
      <manvolnum>8mandos</manvolnum></citerefentry>.  The key is
186
 
      normally written to /etc/mandos for later installation into the
187
 
      initrd image, but this, and most other things, can be changed
188
 
      with command line options.
189
 
    </para>
190
 
    <para>
191
 
      This program can also be used with the
192
 
      <option>--password</option> or <option>--passfile</option>
193
 
      options to generate a ready-made section for
194
 
      <filename>clients.conf</filename> (see
195
 
      <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
196
 
      <manvolnum>5</manvolnum></citerefentry>).
197
 
    </para>
198
 
  </refsect1>
199
 
  
200
 
  <refsect1 id="purpose">
201
 
    <title>PURPOSE</title>
202
 
    <para>
203
 
      The purpose of this is to enable <emphasis>remote and unattended
204
 
      rebooting</emphasis> of client host computer with an
205
 
      <emphasis>encrypted root file system</emphasis>.  See <xref
206
 
      linkend="overview"/> for details.
207
 
    </para>
208
 
  </refsect1>
209
 
  
210
 
  <refsect1 id="options">
211
 
    <title>OPTIONS</title>
212
 
    
213
 
    <variablelist>
214
 
      <varlistentry>
215
 
        <term><option>--help</option></term>
216
 
        <term><option>-h</option></term>
217
 
        <listitem>
218
 
          <para>
219
 
            Show a help message and exit
220
 
          </para>
221
 
        </listitem>
222
 
      </varlistentry>
223
 
      
224
 
      <varlistentry>
225
 
        <term><option>--dir
226
 
        <replaceable>DIRECTORY</replaceable></option></term>
227
 
        <term><option>-d
228
 
        <replaceable>DIRECTORY</replaceable></option></term>
229
 
        <listitem>
230
 
          <para>
231
 
            Target directory for key files.  Default is
232
 
            <filename class="directory">/etc/mandos</filename>.
233
 
          </para>
234
 
        </listitem>
235
 
      </varlistentry>
236
 
      
237
 
      <varlistentry>
238
 
        <term><option>--type
239
 
        <replaceable>TYPE</replaceable></option></term>
240
 
        <term><option>-t
241
 
        <replaceable>TYPE</replaceable></option></term>
242
 
        <listitem>
243
 
          <para>
244
 
            Key type.  Default is <quote>RSA</quote>.
245
 
          </para>
246
 
        </listitem>
247
 
      </varlistentry>
248
 
      
249
 
      <varlistentry>
250
 
        <term><option>--length
251
 
        <replaceable>BITS</replaceable></option></term>
252
 
        <term><option>-l
253
 
        <replaceable>BITS</replaceable></option></term>
254
 
        <listitem>
255
 
          <para>
256
 
            Key length in bits.  Default is 4096.
257
 
          </para>
258
 
        </listitem>
259
 
      </varlistentry>
260
 
      
261
 
      <varlistentry>
262
 
        <term><option>--subtype
263
 
        <replaceable>KEYTYPE</replaceable></option></term>
264
 
        <term><option>-s
265
 
        <replaceable>KEYTYPE</replaceable></option></term>
266
 
        <listitem>
267
 
          <para>
268
 
            Subkey type.  Default is <quote>RSA</quote> (Elgamal
269
 
            encryption-only).
270
 
          </para>
271
 
        </listitem>
272
 
      </varlistentry>
273
 
      
274
 
      <varlistentry>
275
 
        <term><option>--sublength
276
 
        <replaceable>BITS</replaceable></option></term>
277
 
        <term><option>-L
278
 
        <replaceable>BITS</replaceable></option></term>
279
 
        <listitem>
280
 
          <para>
281
 
            Subkey length in bits.  Default is 4096.
282
 
          </para>
283
 
        </listitem>
284
 
      </varlistentry>
285
 
      
286
 
      <varlistentry>
287
 
        <term><option>--email
288
 
        <replaceable>ADDRESS</replaceable></option></term>
289
 
        <term><option>-e
290
 
        <replaceable>ADDRESS</replaceable></option></term>
291
 
        <listitem>
292
 
          <para>
293
 
            Email address of key.  Default is empty.
294
 
          </para>
295
 
        </listitem>
296
 
      </varlistentry>
297
 
      
298
 
      <varlistentry>
299
 
        <term><option>--comment
300
 
        <replaceable>TEXT</replaceable></option></term>
301
 
        <term><option>-c
302
 
        <replaceable>TEXT</replaceable></option></term>
303
 
        <listitem>
304
 
          <para>
305
 
            Comment field for key.  Default is empty.
306
 
          </para>
307
 
        </listitem>
308
 
      </varlistentry>
309
 
      
310
 
      <varlistentry>
311
 
        <term><option>--expire
312
 
        <replaceable>TIME</replaceable></option></term>
313
 
        <term><option>-x
314
 
        <replaceable>TIME</replaceable></option></term>
315
 
        <listitem>
316
 
          <para>
317
 
            Key expire time.  Default is no expiration.  See
318
 
            <citerefentry><refentrytitle>gpg</refentrytitle>
319
 
            <manvolnum>1</manvolnum></citerefentry> for syntax.
320
 
          </para>
321
 
        </listitem>
322
 
      </varlistentry>
323
 
      
324
 
      <varlistentry>
325
 
        <term><option>--force</option></term>
326
 
        <term><option>-f</option></term>
327
 
        <listitem>
328
 
          <para>
329
 
            Force overwriting old key.
330
 
          </para>
331
 
        </listitem>
332
 
      </varlistentry>
333
 
      <varlistentry>
334
 
        <term><option>--password</option></term>
335
 
        <term><option>-p</option></term>
336
 
        <listitem>
337
 
          <para>
338
 
            Prompt for a password and encrypt it with the key already
339
 
            present in either <filename>/etc/mandos</filename> or the
340
 
            directory specified with the <option>--dir</option>
341
 
            option.  Outputs, on standard output, a section suitable
342
 
            for inclusion in <citerefentry><refentrytitle
343
 
            >mandos-clients.conf</refentrytitle><manvolnum
344
 
            >8</manvolnum></citerefentry>.  The host name or the name
345
 
            specified with the <option>--name</option> option is used
346
 
            for the section header.  All other options are ignored,
347
 
            and no key is created.
348
 
          </para>
349
 
        </listitem>
350
 
      </varlistentry>
351
 
      <varlistentry>
352
 
        <term><option>--passfile
353
 
        <replaceable>FILE</replaceable></option></term>
354
 
        <term><option>-F
355
 
        <replaceable>FILE</replaceable></option></term>
356
 
        <listitem>
357
 
          <para>
358
 
            The same as <option>--password</option>, but read from
359
 
            <replaceable>FILE</replaceable>, not the terminal.
360
 
          </para>
361
 
        </listitem>
362
 
      </varlistentry>
363
 
      <varlistentry>
364
 
        <term><option>--no-ssh</option></term>
365
 
        <term><option>-S</option></term>
366
 
        <listitem>
367
 
          <para>
368
 
            When <option>--password</option> or
369
 
            <option>--passfile</option> is given, this option will
370
 
            prevent <command>&COMMANDNAME;</command> from calling
371
 
            <command>ssh-keyscan</command> to get an SSH fingerprint
372
 
            for this host and, if successful, output suitable config
373
 
            options to use this fingerprint as a
374
 
            <option>checker</option> option in the output.  This is
375
 
            otherwise the default behavior.
376
 
          </para>
377
 
        </listitem>
378
 
      </varlistentry>
379
 
    </variablelist>
380
 
  </refsect1>
381
 
  
382
 
  <refsect1 id="overview">
383
 
    <title>OVERVIEW</title>
384
 
    <xi:include href="overview.xml"/>
385
 
    <para>
386
 
      This program is a small utility to generate new OpenPGP keys for
387
 
      new Mandos clients, and to generate sections for inclusion in
388
 
      <filename>clients.conf</filename> on the server.
389
 
    </para>
390
 
  </refsect1>
391
 
  
392
 
  <refsect1 id="exit_status">
393
 
    <title>EXIT STATUS</title>
394
 
    <para>
395
 
      The exit status will be 0 if a new key (or password, if the
396
 
      <option>--password</option> option was used) was successfully
397
 
      created, otherwise not.
398
 
    </para>
399
 
  </refsect1>
400
 
  
401
 
  <refsect1 id="environment">
402
 
    <title>ENVIRONMENT</title>
403
 
    <variablelist>
404
 
      <varlistentry>
405
 
        <term><envar>TMPDIR</envar></term>
406
 
        <listitem>
407
 
          <para>
408
 
            If set, temporary files will be created here. See
409
 
            <citerefentry><refentrytitle>mktemp</refentrytitle>
410
 
            <manvolnum>1</manvolnum></citerefentry>.
411
 
          </para>
412
 
        </listitem>
413
 
      </varlistentry>
414
 
    </variablelist>
415
 
  </refsect1>
416
 
  
417
 
  <refsect1 id="files">
418
 
    <title>FILES</title>
419
 
    <para>
420
 
      Use the <option>--dir</option> option to change where
421
 
      <command>&COMMANDNAME;</command> will write the key files.  The
422
 
      default file names are shown here.
423
 
    </para>
424
 
    <variablelist>
425
 
      <varlistentry>
426
 
        <term><filename>/etc/mandos/seckey.txt</filename></term>
427
 
        <listitem>
428
 
          <para>
429
 
            OpenPGP secret key file which will be created or
430
 
            overwritten.
431
 
          </para>
432
 
        </listitem>
433
 
      </varlistentry>
434
 
      <varlistentry>
435
 
        <term><filename>/etc/mandos/pubkey.txt</filename></term>
436
 
        <listitem>
437
 
          <para>
438
 
            OpenPGP public key file which will be created or
439
 
            overwritten.
440
 
          </para>
441
 
        </listitem>
442
 
      </varlistentry>
443
 
      <varlistentry>
444
 
        <term><filename class="directory">/tmp</filename></term>
445
 
        <listitem>
446
 
          <para>
447
 
            Temporary files will be written here if
448
 
            <varname>TMPDIR</varname> is not set.
449
 
          </para>
450
 
        </listitem>
451
 
      </varlistentry>
452
 
    </variablelist>
453
 
  </refsect1>
454
 
  
455
 
  <refsect1 id="bugs">
456
 
    <title>BUGS</title>
457
 
    <xi:include href="bugs.xml"/>
458
 
  </refsect1>
459
 
  
460
 
  <refsect1 id="example">
461
 
    <title>EXAMPLE</title>
462
 
    <informalexample>
463
 
      <para>
464
 
        Normal invocation needs no options:
465
 
      </para>
466
 
      <para>
467
 
        <userinput>&COMMANDNAME;</userinput>
468
 
      </para>
469
 
    </informalexample>
470
 
    <informalexample>
471
 
      <para>
472
 
        Create key in another directory and of another type.  Force
473
 
        overwriting old key files:
474
 
      </para>
475
 
      <para>
476
 
 
477
 
<!-- do not wrap this line -->
478
 
<userinput>&COMMANDNAME; --dir ~/keydir --type RSA --force</userinput>
479
 
 
480
 
      </para>
481
 
    </informalexample>
482
 
    <informalexample>
483
 
      <para>
484
 
        Prompt for a password, encrypt it with the key in <filename
485
 
        class="directory">/etc/mandos</filename> and output a section
486
 
        suitable for <filename>clients.conf</filename>.
487
 
      </para>
488
 
      <para>
489
 
        <userinput>&COMMANDNAME; --password</userinput>
490
 
      </para>
491
 
    </informalexample>
492
 
    <informalexample>
493
 
      <para>
494
 
        Prompt for a password, encrypt it with the key in the
495
 
        <filename>client-key</filename> directory and output a section
496
 
        suitable for <filename>clients.conf</filename>.
497
 
      </para>
498
 
      <para>
499
 
 
500
 
<!-- do not wrap this line -->
501
 
<userinput>&COMMANDNAME; --password --dir client-key</userinput>
502
 
 
503
 
      </para>
504
 
    </informalexample>
505
 
  </refsect1>
506
 
  
507
 
  <refsect1 id="security">
508
 
    <title>SECURITY</title>
509
 
    <para>
510
 
      The <option>--type</option>, <option>--length</option>,
511
 
      <option>--subtype</option>, and <option>--sublength</option>
512
 
      options can be used to create keys of low security.  If in
513
 
      doubt, leave them to the default values.
514
 
    </para>
515
 
    <para>
516
 
      The key expire time is <emphasis>not</emphasis> guaranteed to be
517
 
      honored by <citerefentry><refentrytitle>mandos</refentrytitle>
518
 
      <manvolnum>8</manvolnum></citerefentry>.
519
 
    </para>
520
 
  </refsect1>
521
 
  
522
 
  <refsect1 id="see_also">
523
 
    <title>SEE ALSO</title>
524
 
    <para>
525
 
      <citerefentry><refentrytitle>intro</refentrytitle>
526
 
      <manvolnum>8mandos</manvolnum></citerefentry>,
527
 
      <citerefentry><refentrytitle>gpg</refentrytitle>
528
 
      <manvolnum>1</manvolnum></citerefentry>,
529
 
      <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
530
 
      <manvolnum>5</manvolnum></citerefentry>,
531
 
      <citerefentry><refentrytitle>mandos</refentrytitle>
532
 
      <manvolnum>8</manvolnum></citerefentry>,
533
 
      <citerefentry><refentrytitle>mandos-client</refentrytitle>
534
 
      <manvolnum>8mandos</manvolnum></citerefentry>,
535
 
      <citerefentry><refentrytitle>ssh-keyscan</refentrytitle>
536
 
      <manvolnum>1</manvolnum></citerefentry>
537
 
    </para>
538
 
  </refsect1>
539
 
  
540
 
</refentry>
541
 
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542
 
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