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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 "2017-02-23">
6
 
<!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
 
      <holder>Teddy Hogeborn</holder>
45
 
      <holder>Björn Påhlsson</holder>
46
 
    </copyright>
47
 
    <xi:include href="legalnotice.xml"/>
48
 
  </refentryinfo>
49
 
  
50
 
  <refmeta>
51
 
    <refentrytitle>&COMMANDNAME;</refentrytitle>
52
 
    <manvolnum>8</manvolnum>
53
 
  </refmeta>
54
 
  
55
 
  <refnamediv>
56
 
    <refname><command>&COMMANDNAME;</command></refname>
57
 
    <refpurpose>
58
 
      Generate key and password for Mandos client and server.
59
 
    </refpurpose>
60
 
  </refnamediv>
61
 
  
62
 
  <refsynopsisdiv>
63
 
    <cmdsynopsis>
64
 
      <command>&COMMANDNAME;</command>
65
 
      <group>
66
 
        <arg choice="plain"><option>--dir
67
 
        <replaceable>DIRECTORY</replaceable></option></arg>
68
 
        <arg choice="plain"><option>-d
69
 
        <replaceable>DIRECTORY</replaceable></option></arg>
70
 
      </group>
71
 
      <sbr/>
72
 
      <group>
73
 
        <arg choice="plain"><option>--type
74
 
        <replaceable>KEYTYPE</replaceable></option></arg>
75
 
        <arg choice="plain"><option>-t
76
 
        <replaceable>KEYTYPE</replaceable></option></arg>
77
 
      </group>
78
 
      <sbr/>
79
 
      <group>
80
 
        <arg choice="plain"><option>--length
81
 
        <replaceable>BITS</replaceable></option></arg>
82
 
        <arg choice="plain"><option>-l
83
 
        <replaceable>BITS</replaceable></option></arg>
84
 
      </group>
85
 
      <sbr/>
86
 
      <group>
87
 
        <arg choice="plain"><option>--subtype
88
 
        <replaceable>KEYTYPE</replaceable></option></arg>
89
 
        <arg choice="plain"><option>-s
90
 
        <replaceable>KEYTYPE</replaceable></option></arg>
91
 
      </group>
92
 
      <sbr/>
93
 
      <group>
94
 
        <arg choice="plain"><option>--sublength
95
 
        <replaceable>BITS</replaceable></option></arg>
96
 
        <arg choice="plain"><option>-L
97
 
        <replaceable>BITS</replaceable></option></arg>
98
 
      </group>
99
 
      <sbr/>
100
 
      <group>
101
 
        <arg choice="plain"><option>--name
102
 
        <replaceable>NAME</replaceable></option></arg>
103
 
        <arg choice="plain"><option>-n
104
 
        <replaceable>NAME</replaceable></option></arg>
105
 
      </group>
106
 
      <sbr/>
107
 
      <group>
108
 
        <arg choice="plain"><option>--email
109
 
        <replaceable>ADDRESS</replaceable></option></arg>
110
 
        <arg choice="plain"><option>-e
111
 
        <replaceable>ADDRESS</replaceable></option></arg>
112
 
      </group>
113
 
      <sbr/>
114
 
      <group>
115
 
        <arg choice="plain"><option>--comment
116
 
        <replaceable>TEXT</replaceable></option></arg>
117
 
        <arg choice="plain"><option>-c
118
 
        <replaceable>TEXT</replaceable></option></arg>
119
 
      </group>
120
 
      <sbr/>
121
 
      <group>
122
 
        <arg choice="plain"><option>--expire
123
 
        <replaceable>TIME</replaceable></option></arg>
124
 
        <arg choice="plain"><option>-x
125
 
        <replaceable>TIME</replaceable></option></arg>
126
 
      </group>
127
 
      <sbr/>
128
 
      <group>
129
 
        <arg choice="plain"><option>--force</option></arg>
130
 
        <arg choice="plain"><option>-f</option></arg>
131
 
      </group>
132
 
    </cmdsynopsis>
133
 
    <cmdsynopsis>
134
 
      <command>&COMMANDNAME;</command>
135
 
      <group choice="req">
136
 
        <arg choice="plain"><option>--password</option></arg>
137
 
        <arg choice="plain"><option>-p</option></arg>
138
 
        <arg choice="plain"><option>--passfile
139
 
        <replaceable>FILE</replaceable></option></arg>
140
 
        <arg choice="plain"><option>-F</option>
141
 
        <replaceable>FILE</replaceable></arg>
142
 
      </group>
143
 
      <sbr/>
144
 
      <group>
145
 
        <arg choice="plain"><option>--dir
146
 
        <replaceable>DIRECTORY</replaceable></option></arg>
147
 
        <arg choice="plain"><option>-d
148
 
        <replaceable>DIRECTORY</replaceable></option></arg>
149
 
      </group>
150
 
      <sbr/>
151
 
      <group>
152
 
        <arg choice="plain"><option>--name
153
 
        <replaceable>NAME</replaceable></option></arg>
154
 
        <arg choice="plain"><option>-n
155
 
        <replaceable>NAME</replaceable></option></arg>
156
 
      </group>
157
 
      <group>
158
 
        <arg choice="plain"><option>--no-ssh</option></arg>
159
 
        <arg choice="plain"><option>-S</option></arg>
160
 
      </group>
161
 
    </cmdsynopsis>
162
 
    <cmdsynopsis>
163
 
      <command>&COMMANDNAME;</command>
164
 
      <group choice="req">
165
 
        <arg choice="plain"><option>--help</option></arg>
166
 
        <arg choice="plain"><option>-h</option></arg>
167
 
      </group>
168
 
    </cmdsynopsis>
169
 
    <cmdsynopsis>
170
 
      <command>&COMMANDNAME;</command>
171
 
      <group choice="req">
172
 
        <arg choice="plain"><option>--version</option></arg>
173
 
        <arg choice="plain"><option>-v</option></arg>
174
 
      </group>
175
 
    </cmdsynopsis>
176
 
  </refsynopsisdiv>
177
 
  
178
 
  <refsect1 id="description">
179
 
    <title>DESCRIPTION</title>
180
 
    <para>
181
 
      <command>&COMMANDNAME;</command> is a program to generate the
182
 
      OpenPGP key used by
183
 
      <citerefentry><refentrytitle>mandos-client</refentrytitle>
184
 
      <manvolnum>8mandos</manvolnum></citerefentry>.  The key is
185
 
      normally written to /etc/mandos for later installation into the
186
 
      initrd image, but this, and most other things, can be changed
187
 
      with command line options.
188
 
    </para>
189
 
    <para>
190
 
      This program can also be used with the
191
 
      <option>--password</option> or <option>--passfile</option>
192
 
      options to generate a ready-made section for
193
 
      <filename>clients.conf</filename> (see
194
 
      <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
195
 
      <manvolnum>5</manvolnum></citerefentry>).
196
 
    </para>
197
 
  </refsect1>
198
 
  
199
 
  <refsect1 id="purpose">
200
 
    <title>PURPOSE</title>
201
 
    <para>
202
 
      The purpose of this is to enable <emphasis>remote and unattended
203
 
      rebooting</emphasis> of client host computer with an
204
 
      <emphasis>encrypted root file system</emphasis>.  See <xref
205
 
      linkend="overview"/> for details.
206
 
    </para>
207
 
  </refsect1>
208
 
  
209
 
  <refsect1 id="options">
210
 
    <title>OPTIONS</title>
211
 
    
212
 
    <variablelist>
213
 
      <varlistentry>
214
 
        <term><option>--help</option></term>
215
 
        <term><option>-h</option></term>
216
 
        <listitem>
217
 
          <para>
218
 
            Show a help message and exit
219
 
          </para>
220
 
        </listitem>
221
 
      </varlistentry>
222
 
      
223
 
      <varlistentry>
224
 
        <term><option>--dir
225
 
        <replaceable>DIRECTORY</replaceable></option></term>
226
 
        <term><option>-d
227
 
        <replaceable>DIRECTORY</replaceable></option></term>
228
 
        <listitem>
229
 
          <para>
230
 
            Target directory for key files.  Default is
231
 
            <filename class="directory">/etc/mandos</filename>.
232
 
          </para>
233
 
        </listitem>
234
 
      </varlistentry>
235
 
      
236
 
      <varlistentry>
237
 
        <term><option>--type
238
 
        <replaceable>TYPE</replaceable></option></term>
239
 
        <term><option>-t
240
 
        <replaceable>TYPE</replaceable></option></term>
241
 
        <listitem>
242
 
          <para>
243
 
            Key type.  Default is <quote>RSA</quote>.
244
 
          </para>
245
 
        </listitem>
246
 
      </varlistentry>
247
 
      
248
 
      <varlistentry>
249
 
        <term><option>--length
250
 
        <replaceable>BITS</replaceable></option></term>
251
 
        <term><option>-l
252
 
        <replaceable>BITS</replaceable></option></term>
253
 
        <listitem>
254
 
          <para>
255
 
            Key length in bits.  Default is 4096.
256
 
          </para>
257
 
        </listitem>
258
 
      </varlistentry>
259
 
      
260
 
      <varlistentry>
261
 
        <term><option>--subtype
262
 
        <replaceable>KEYTYPE</replaceable></option></term>
263
 
        <term><option>-s
264
 
        <replaceable>KEYTYPE</replaceable></option></term>
265
 
        <listitem>
266
 
          <para>
267
 
            Subkey type.  Default is <quote>RSA</quote> (Elgamal
268
 
            encryption-only).
269
 
          </para>
270
 
        </listitem>
271
 
      </varlistentry>
272
 
      
273
 
      <varlistentry>
274
 
        <term><option>--sublength
275
 
        <replaceable>BITS</replaceable></option></term>
276
 
        <term><option>-L
277
 
        <replaceable>BITS</replaceable></option></term>
278
 
        <listitem>
279
 
          <para>
280
 
            Subkey length in bits.  Default is 4096.
281
 
          </para>
282
 
        </listitem>
283
 
      </varlistentry>
284
 
      
285
 
      <varlistentry>
286
 
        <term><option>--email
287
 
        <replaceable>ADDRESS</replaceable></option></term>
288
 
        <term><option>-e
289
 
        <replaceable>ADDRESS</replaceable></option></term>
290
 
        <listitem>
291
 
          <para>
292
 
            Email address of key.  Default is empty.
293
 
          </para>
294
 
        </listitem>
295
 
      </varlistentry>
296
 
      
297
 
      <varlistentry>
298
 
        <term><option>--comment
299
 
        <replaceable>TEXT</replaceable></option></term>
300
 
        <term><option>-c
301
 
        <replaceable>TEXT</replaceable></option></term>
302
 
        <listitem>
303
 
          <para>
304
 
            Comment field for key.  Default is empty.
305
 
          </para>
306
 
        </listitem>
307
 
      </varlistentry>
308
 
      
309
 
      <varlistentry>
310
 
        <term><option>--expire
311
 
        <replaceable>TIME</replaceable></option></term>
312
 
        <term><option>-x
313
 
        <replaceable>TIME</replaceable></option></term>
314
 
        <listitem>
315
 
          <para>
316
 
            Key expire time.  Default is no expiration.  See
317
 
            <citerefentry><refentrytitle>gpg</refentrytitle>
318
 
            <manvolnum>1</manvolnum></citerefentry> for syntax.
319
 
          </para>
320
 
        </listitem>
321
 
      </varlistentry>
322
 
      
323
 
      <varlistentry>
324
 
        <term><option>--force</option></term>
325
 
        <term><option>-f</option></term>
326
 
        <listitem>
327
 
          <para>
328
 
            Force overwriting old key.
329
 
          </para>
330
 
        </listitem>
331
 
      </varlistentry>
332
 
      <varlistentry>
333
 
        <term><option>--password</option></term>
334
 
        <term><option>-p</option></term>
335
 
        <listitem>
336
 
          <para>
337
 
            Prompt for a password and encrypt it with the key already
338
 
            present in either <filename>/etc/mandos</filename> or the
339
 
            directory specified with the <option>--dir</option>
340
 
            option.  Outputs, on standard output, a section suitable
341
 
            for inclusion in <citerefentry><refentrytitle
342
 
            >mandos-clients.conf</refentrytitle><manvolnum
343
 
            >8</manvolnum></citerefentry>.  The host name or the name
344
 
            specified with the <option>--name</option> option is used
345
 
            for the section header.  All other options are ignored,
346
 
            and no key is created.
347
 
          </para>
348
 
        </listitem>
349
 
      </varlistentry>
350
 
      <varlistentry>
351
 
        <term><option>--passfile
352
 
        <replaceable>FILE</replaceable></option></term>
353
 
        <term><option>-F
354
 
        <replaceable>FILE</replaceable></option></term>
355
 
        <listitem>
356
 
          <para>
357
 
            The same as <option>--password</option>, but read from
358
 
            <replaceable>FILE</replaceable>, not the terminal.
359
 
          </para>
360
 
        </listitem>
361
 
      </varlistentry>
362
 
      <varlistentry>
363
 
        <term><option>--no-ssh</option></term>
364
 
        <term><option>-S</option></term>
365
 
        <listitem>
366
 
          <para>
367
 
            When <option>--password</option> or
368
 
            <option>--passfile</option> is given, this option will
369
 
            prevent <command>&COMMANDNAME;</command> from calling
370
 
            <command>ssh-keyscan</command> to get an SSH fingerprint
371
 
            for this host and, if successful, output suitable config
372
 
            options to use this fingerprint as a
373
 
            <option>checker</option> option in the output.  This is
374
 
            otherwise the default behavior.
375
 
          </para>
376
 
        </listitem>
377
 
      </varlistentry>
378
 
    </variablelist>
379
 
  </refsect1>
380
 
  
381
 
  <refsect1 id="overview">
382
 
    <title>OVERVIEW</title>
383
 
    <xi:include href="overview.xml"/>
384
 
    <para>
385
 
      This program is a small utility to generate new OpenPGP keys for
386
 
      new Mandos clients, and to generate sections for inclusion in
387
 
      <filename>clients.conf</filename> on the server.
388
 
    </para>
389
 
  </refsect1>
390
 
  
391
 
  <refsect1 id="exit_status">
392
 
    <title>EXIT STATUS</title>
393
 
    <para>
394
 
      The exit status will be 0 if a new key (or password, if the
395
 
      <option>--password</option> option was used) was successfully
396
 
      created, otherwise not.
397
 
    </para>
398
 
  </refsect1>
399
 
  
400
 
  <refsect1 id="environment">
401
 
    <title>ENVIRONMENT</title>
402
 
    <variablelist>
403
 
      <varlistentry>
404
 
        <term><envar>TMPDIR</envar></term>
405
 
        <listitem>
406
 
          <para>
407
 
            If set, temporary files will be created here. See
408
 
            <citerefentry><refentrytitle>mktemp</refentrytitle>
409
 
            <manvolnum>1</manvolnum></citerefentry>.
410
 
          </para>
411
 
        </listitem>
412
 
      </varlistentry>
413
 
    </variablelist>
414
 
  </refsect1>
415
 
  
416
 
  <refsect1 id="files">
417
 
    <title>FILES</title>
418
 
    <para>
419
 
      Use the <option>--dir</option> option to change where
420
 
      <command>&COMMANDNAME;</command> will write the key files.  The
421
 
      default file names are shown here.
422
 
    </para>
423
 
    <variablelist>
424
 
      <varlistentry>
425
 
        <term><filename>/etc/mandos/seckey.txt</filename></term>
426
 
        <listitem>
427
 
          <para>
428
 
            OpenPGP secret key file which will be created or
429
 
            overwritten.
430
 
          </para>
431
 
        </listitem>
432
 
      </varlistentry>
433
 
      <varlistentry>
434
 
        <term><filename>/etc/mandos/pubkey.txt</filename></term>
435
 
        <listitem>
436
 
          <para>
437
 
            OpenPGP public key file which will be created or
438
 
            overwritten.
439
 
          </para>
440
 
        </listitem>
441
 
      </varlistentry>
442
 
      <varlistentry>
443
 
        <term><filename class="directory">/tmp</filename></term>
444
 
        <listitem>
445
 
          <para>
446
 
            Temporary files will be written here if
447
 
            <varname>TMPDIR</varname> is not set.
448
 
          </para>
449
 
        </listitem>
450
 
      </varlistentry>
451
 
    </variablelist>
452
 
  </refsect1>
453
 
  
454
 
  <refsect1 id="bugs">
455
 
    <title>BUGS</title>
456
 
    <xi:include href="bugs.xml"/>
457
 
  </refsect1>
458
 
  
459
 
  <refsect1 id="example">
460
 
    <title>EXAMPLE</title>
461
 
    <informalexample>
462
 
      <para>
463
 
        Normal invocation needs no options:
464
 
      </para>
465
 
      <para>
466
 
        <userinput>&COMMANDNAME;</userinput>
467
 
      </para>
468
 
    </informalexample>
469
 
    <informalexample>
470
 
      <para>
471
 
        Create key in another directory and of another type.  Force
472
 
        overwriting old key files:
473
 
      </para>
474
 
      <para>
475
 
 
476
 
<!-- do not wrap this line -->
477
 
<userinput>&COMMANDNAME; --dir ~/keydir --type RSA --force</userinput>
478
 
 
479
 
      </para>
480
 
    </informalexample>
481
 
    <informalexample>
482
 
      <para>
483
 
        Prompt for a password, encrypt it with the key in <filename
484
 
        class="directory">/etc/mandos</filename> and output a section
485
 
        suitable for <filename>clients.conf</filename>.
486
 
      </para>
487
 
      <para>
488
 
        <userinput>&COMMANDNAME; --password</userinput>
489
 
      </para>
490
 
    </informalexample>
491
 
    <informalexample>
492
 
      <para>
493
 
        Prompt for a password, encrypt it with the key in the
494
 
        <filename>client-key</filename> directory and output a section
495
 
        suitable for <filename>clients.conf</filename>.
496
 
      </para>
497
 
      <para>
498
 
 
499
 
<!-- do not wrap this line -->
500
 
<userinput>&COMMANDNAME; --password --dir client-key</userinput>
501
 
 
502
 
      </para>
503
 
    </informalexample>
504
 
  </refsect1>
505
 
  
506
 
  <refsect1 id="security">
507
 
    <title>SECURITY</title>
508
 
    <para>
509
 
      The <option>--type</option>, <option>--length</option>,
510
 
      <option>--subtype</option>, and <option>--sublength</option>
511
 
      options can be used to create keys of low security.  If in
512
 
      doubt, leave them to the default values.
513
 
    </para>
514
 
    <para>
515
 
      The key expire time is <emphasis>not</emphasis> guaranteed to be
516
 
      honored by <citerefentry><refentrytitle>mandos</refentrytitle>
517
 
      <manvolnum>8</manvolnum></citerefentry>.
518
 
    </para>
519
 
  </refsect1>
520
 
  
521
 
  <refsect1 id="see_also">
522
 
    <title>SEE ALSO</title>
523
 
    <para>
524
 
      <citerefentry><refentrytitle>intro</refentrytitle>
525
 
      <manvolnum>8mandos</manvolnum></citerefentry>,
526
 
      <citerefentry><refentrytitle>gpg</refentrytitle>
527
 
      <manvolnum>1</manvolnum></citerefentry>,
528
 
      <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
529
 
      <manvolnum>5</manvolnum></citerefentry>,
530
 
      <citerefentry><refentrytitle>mandos</refentrytitle>
531
 
      <manvolnum>8</manvolnum></citerefentry>,
532
 
      <citerefentry><refentrytitle>mandos-client</refentrytitle>
533
 
      <manvolnum>8mandos</manvolnum></citerefentry>,
534
 
      <citerefentry><refentrytitle>ssh-keyscan</refentrytitle>
535
 
      <manvolnum>1</manvolnum></citerefentry>
536
 
    </para>
537
 
  </refsect1>
538
 
  
539
 
</refentry>
540
 
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541
 
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