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  • Committer: Teddy Hogeborn
  • Date: 2015-07-09 08:20:24 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 325.
  • Revision ID: teddy@recompile.se-20150709082024-eitu9mav45lefl75
mandos-client: Add --dh-params FILE option.

* plugins.d/mandos-client.c: Added --dh-params FILE option.
  (init_gnutls_global): New "dhparamsfilename" argument.  All callers
                        changed.  Read and use Diffie-Hellman
                        parameters from it.  Bug fix:  check for error
                        when opening seckeyfile for the second time.
  (init_gnutls_session): Remove unnecessary call to
                         gnutls_dh_set_prime_bits();
  (main): New variable "dh_params_file".
  (main/argp_options): Added "--dh-params" option.
  (main/parse_opt): - '' -
* plugins.d/mandos-client.xml (SYNOPSIS): Add --dh-params option.
  (OPTIONS): Document --dh-params option and document that the
             --dh-bits options is potentially overridden by the
             --dh-params option.

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Lines of Context:
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"
 
3
        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
 
4
<!ENTITY COMMANDNAME "mandos-keygen">
 
5
<!ENTITY TIMESTAMP "2014-06-22">
 
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>2011</year>
 
37
      <year>2012</year>
 
38
      <holder>Teddy Hogeborn</holder>
 
39
      <holder>Björn Påhlsson</holder>
 
40
    </copyright>
 
41
    <xi:include href="legalnotice.xml"/>
 
42
  </refentryinfo>
 
43
  
 
44
  <refmeta>
 
45
    <refentrytitle>&COMMANDNAME;</refentrytitle>
 
46
    <manvolnum>8</manvolnum>
 
47
  </refmeta>
 
48
  
 
49
  <refnamediv>
 
50
    <refname><command>&COMMANDNAME;</command></refname>
 
51
    <refpurpose>
 
52
      Generate key and password for Mandos client and server.
 
53
    </refpurpose>
 
54
  </refnamediv>
 
55
  
 
56
  <refsynopsisdiv>
 
57
    <cmdsynopsis>
 
58
      <command>&COMMANDNAME;</command>
 
59
      <group>
 
60
        <arg choice="plain"><option>--dir
 
61
        <replaceable>DIRECTORY</replaceable></option></arg>
 
62
        <arg choice="plain"><option>-d
 
63
        <replaceable>DIRECTORY</replaceable></option></arg>
 
64
      </group>
 
65
      <sbr/>
 
66
      <group>
 
67
        <arg choice="plain"><option>--type
 
68
        <replaceable>KEYTYPE</replaceable></option></arg>
 
69
        <arg choice="plain"><option>-t
 
70
        <replaceable>KEYTYPE</replaceable></option></arg>
 
71
      </group>
 
72
      <sbr/>
 
73
      <group>
 
74
        <arg choice="plain"><option>--length
 
75
        <replaceable>BITS</replaceable></option></arg>
 
76
        <arg choice="plain"><option>-l
 
77
        <replaceable>BITS</replaceable></option></arg>
 
78
      </group>
 
79
      <sbr/>
 
80
      <group>
 
81
        <arg choice="plain"><option>--subtype
 
82
        <replaceable>KEYTYPE</replaceable></option></arg>
 
83
        <arg choice="plain"><option>-s
 
84
        <replaceable>KEYTYPE</replaceable></option></arg>
 
85
      </group>
 
86
      <sbr/>
 
87
      <group>
 
88
        <arg choice="plain"><option>--sublength
 
89
        <replaceable>BITS</replaceable></option></arg>
 
90
        <arg choice="plain"><option>-L
 
91
        <replaceable>BITS</replaceable></option></arg>
 
92
      </group>
 
93
      <sbr/>
 
94
      <group>
 
95
        <arg choice="plain"><option>--name
 
96
        <replaceable>NAME</replaceable></option></arg>
 
97
        <arg choice="plain"><option>-n
 
98
        <replaceable>NAME</replaceable></option></arg>
 
99
      </group>
 
100
      <sbr/>
 
101
      <group>
 
102
        <arg choice="plain"><option>--email
 
103
        <replaceable>ADDRESS</replaceable></option></arg>
 
104
        <arg choice="plain"><option>-e
 
105
        <replaceable>ADDRESS</replaceable></option></arg>
 
106
      </group>
 
107
      <sbr/>
 
108
      <group>
 
109
        <arg choice="plain"><option>--comment
 
110
        <replaceable>TEXT</replaceable></option></arg>
 
111
        <arg choice="plain"><option>-c
 
112
        <replaceable>TEXT</replaceable></option></arg>
 
113
      </group>
 
114
      <sbr/>
 
115
      <group>
 
116
        <arg choice="plain"><option>--expire
 
117
        <replaceable>TIME</replaceable></option></arg>
 
118
        <arg choice="plain"><option>-x
 
119
        <replaceable>TIME</replaceable></option></arg>
 
120
      </group>
 
121
      <sbr/>
 
122
      <group>
 
123
        <arg choice="plain"><option>--force</option></arg>
 
124
        <arg choice="plain"><option>-f</option></arg>
 
125
      </group>
 
126
    </cmdsynopsis>
 
127
    <cmdsynopsis>
 
128
      <command>&COMMANDNAME;</command>
 
129
      <group choice="req">
 
130
        <arg choice="plain"><option>--password</option></arg>
 
131
        <arg choice="plain"><option>-p</option></arg>
 
132
        <arg choice="plain"><option>--passfile
 
133
        <replaceable>FILE</replaceable></option></arg>
 
134
        <arg choice="plain"><option>-F</option>
 
135
        <replaceable>FILE</replaceable></arg>
 
136
      </group>
 
137
      <sbr/>
 
138
      <group>
 
139
        <arg choice="plain"><option>--dir
 
140
        <replaceable>DIRECTORY</replaceable></option></arg>
 
141
        <arg choice="plain"><option>-d
 
142
        <replaceable>DIRECTORY</replaceable></option></arg>
 
143
      </group>
 
144
      <sbr/>
 
145
      <group>
 
146
        <arg choice="plain"><option>--name
 
147
        <replaceable>NAME</replaceable></option></arg>
 
148
        <arg choice="plain"><option>-n
 
149
        <replaceable>NAME</replaceable></option></arg>
 
150
      </group>
 
151
      <group>
 
152
        <arg choice="plain"><option>--no-ssh</option></arg>
 
153
        <arg choice="plain"><option>-S</option></arg>
 
154
      </group>
 
155
    </cmdsynopsis>
 
156
    <cmdsynopsis>
 
157
      <command>&COMMANDNAME;</command>
 
158
      <group choice="req">
 
159
        <arg choice="plain"><option>--help</option></arg>
 
160
        <arg choice="plain"><option>-h</option></arg>
 
161
      </group>
 
162
    </cmdsynopsis>
 
163
    <cmdsynopsis>
 
164
      <command>&COMMANDNAME;</command>
 
165
      <group choice="req">
 
166
        <arg choice="plain"><option>--version</option></arg>
 
167
        <arg choice="plain"><option>-v</option></arg>
 
168
      </group>
 
169
    </cmdsynopsis>
 
170
  </refsynopsisdiv>
 
171
  
 
172
  <refsect1 id="description">
 
173
    <title>DESCRIPTION</title>
 
174
    <para>
 
175
      <command>&COMMANDNAME;</command> is a program to generate the
 
176
      OpenPGP key used by
 
177
      <citerefentry><refentrytitle>mandos-client</refentrytitle>
 
178
      <manvolnum>8mandos</manvolnum></citerefentry>.  The key is
 
179
      normally written to /etc/mandos for later installation into the
 
180
      initrd image, but this, and most other things, can be changed
 
181
      with command line options.
 
182
    </para>
 
183
    <para>
 
184
      This program can also be used with the
 
185
      <option>--password</option> or <option>--passfile</option>
 
186
      options to generate a ready-made section for
 
187
      <filename>clients.conf</filename> (see
 
188
      <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
 
189
      <manvolnum>5</manvolnum></citerefentry>).
 
190
    </para>
 
191
  </refsect1>
 
192
  
 
193
  <refsect1 id="purpose">
 
194
    <title>PURPOSE</title>
 
195
    <para>
 
196
      The purpose of this is to enable <emphasis>remote and unattended
 
197
      rebooting</emphasis> of client host computer with an
 
198
      <emphasis>encrypted root file system</emphasis>.  See <xref
 
199
      linkend="overview"/> for details.
 
200
    </para>
 
201
  </refsect1>
 
202
  
 
203
  <refsect1 id="options">
 
204
    <title>OPTIONS</title>
 
205
    
 
206
    <variablelist>
 
207
      <varlistentry>
 
208
        <term><option>--help</option></term>
 
209
        <term><option>-h</option></term>
 
210
        <listitem>
 
211
          <para>
 
212
            Show a help message and exit
 
213
          </para>
 
214
        </listitem>
 
215
      </varlistentry>
 
216
      
 
217
      <varlistentry>
 
218
        <term><option>--dir
 
219
        <replaceable>DIRECTORY</replaceable></option></term>
 
220
        <term><option>-d
 
221
        <replaceable>DIRECTORY</replaceable></option></term>
 
222
        <listitem>
 
223
          <para>
 
224
            Target directory for key files.  Default is
 
225
            <filename class="directory">/etc/mandos</filename>.
 
226
          </para>
 
227
        </listitem>
 
228
      </varlistentry>
 
229
      
 
230
      <varlistentry>
 
231
        <term><option>--type
 
232
        <replaceable>TYPE</replaceable></option></term>
 
233
        <term><option>-t
 
234
        <replaceable>TYPE</replaceable></option></term>
 
235
        <listitem>
 
236
          <para>
 
237
            Key type.  Default is <quote>RSA</quote>.
 
238
          </para>
 
239
        </listitem>
 
240
      </varlistentry>
 
241
      
 
242
      <varlistentry>
 
243
        <term><option>--length
 
244
        <replaceable>BITS</replaceable></option></term>
 
245
        <term><option>-l
 
246
        <replaceable>BITS</replaceable></option></term>
 
247
        <listitem>
 
248
          <para>
 
249
            Key length in bits.  Default is 4096.
 
250
          </para>
 
251
        </listitem>
 
252
      </varlistentry>
 
253
      
 
254
      <varlistentry>
 
255
        <term><option>--subtype
 
256
        <replaceable>KEYTYPE</replaceable></option></term>
 
257
        <term><option>-s
 
258
        <replaceable>KEYTYPE</replaceable></option></term>
 
259
        <listitem>
 
260
          <para>
 
261
            Subkey type.  Default is <quote>RSA</quote> (Elgamal
 
262
            encryption-only).
 
263
          </para>
 
264
        </listitem>
 
265
      </varlistentry>
 
266
      
 
267
      <varlistentry>
 
268
        <term><option>--sublength
 
269
        <replaceable>BITS</replaceable></option></term>
 
270
        <term><option>-L
 
271
        <replaceable>BITS</replaceable></option></term>
 
272
        <listitem>
 
273
          <para>
 
274
            Subkey length in bits.  Default is 4096.
 
275
          </para>
 
276
        </listitem>
 
277
      </varlistentry>
 
278
      
 
279
      <varlistentry>
 
280
        <term><option>--email
 
281
        <replaceable>ADDRESS</replaceable></option></term>
 
282
        <term><option>-e
 
283
        <replaceable>ADDRESS</replaceable></option></term>
 
284
        <listitem>
 
285
          <para>
 
286
            Email address of key.  Default is empty.
 
287
          </para>
 
288
        </listitem>
 
289
      </varlistentry>
 
290
      
 
291
      <varlistentry>
 
292
        <term><option>--comment
 
293
        <replaceable>TEXT</replaceable></option></term>
 
294
        <term><option>-c
 
295
        <replaceable>TEXT</replaceable></option></term>
 
296
        <listitem>
 
297
          <para>
 
298
            Comment field for key.  Default is empty.
 
299
          </para>
 
300
        </listitem>
 
301
      </varlistentry>
 
302
      
 
303
      <varlistentry>
 
304
        <term><option>--expire
 
305
        <replaceable>TIME</replaceable></option></term>
 
306
        <term><option>-x
 
307
        <replaceable>TIME</replaceable></option></term>
 
308
        <listitem>
 
309
          <para>
 
310
            Key expire time.  Default is no expiration.  See
 
311
            <citerefentry><refentrytitle>gpg</refentrytitle>
 
312
            <manvolnum>1</manvolnum></citerefentry> for syntax.
 
313
          </para>
 
314
        </listitem>
 
315
      </varlistentry>
 
316
      
 
317
      <varlistentry>
 
318
        <term><option>--force</option></term>
 
319
        <term><option>-f</option></term>
 
320
        <listitem>
 
321
          <para>
 
322
            Force overwriting old key.
 
323
          </para>
 
324
        </listitem>
 
325
      </varlistentry>
 
326
      <varlistentry>
 
327
        <term><option>--password</option></term>
 
328
        <term><option>-p</option></term>
 
329
        <listitem>
 
330
          <para>
 
331
            Prompt for a password and encrypt it with the key already
 
332
            present in either <filename>/etc/mandos</filename> or the
 
333
            directory specified with the <option>--dir</option>
 
334
            option.  Outputs, on standard output, a section suitable
 
335
            for inclusion in <citerefentry><refentrytitle
 
336
            >mandos-clients.conf</refentrytitle><manvolnum
 
337
            >8</manvolnum></citerefentry>.  The host name or the name
 
338
            specified with the <option>--name</option> option is used
 
339
            for the section header.  All other options are ignored,
 
340
            and no key is created.
 
341
          </para>
 
342
        </listitem>
 
343
      </varlistentry>
 
344
      <varlistentry>
 
345
        <term><option>--passfile
 
346
        <replaceable>FILE</replaceable></option></term>
 
347
        <term><option>-F
 
348
        <replaceable>FILE</replaceable></option></term>
 
349
        <listitem>
 
350
          <para>
 
351
            The same as <option>--password</option>, but read from
 
352
            <replaceable>FILE</replaceable>, not the terminal.
 
353
          </para>
 
354
        </listitem>
 
355
      </varlistentry>
 
356
      <varlistentry>
 
357
        <term><option>--no-ssh</option></term>
 
358
        <term><option>-S</option></term>
 
359
        <listitem>
 
360
          <para>
 
361
            When <option>--password</option> or
 
362
            <option>--passfile</option> is given, this option will
 
363
            prevent <command>&COMMANDNAME;</command> from calling
 
364
            <command>ssh-keyscan</command> to get an SSH fingerprint
 
365
            for this host and, if successful, output suitable config
 
366
            options to use this fingerprint as a
 
367
            <option>checker</option> option in the output.  This is
 
368
            otherwise the default behavior.
 
369
          </para>
 
370
        </listitem>
 
371
      </varlistentry>
 
372
    </variablelist>
 
373
  </refsect1>
 
374
  
 
375
  <refsect1 id="overview">
 
376
    <title>OVERVIEW</title>
 
377
    <xi:include href="overview.xml"/>
 
378
    <para>
 
379
      This program is a small utility to generate new OpenPGP keys for
 
380
      new Mandos clients, and to generate sections for inclusion in
 
381
      <filename>clients.conf</filename> on the server.
 
382
    </para>
 
383
  </refsect1>
 
384
  
 
385
  <refsect1 id="exit_status">
 
386
    <title>EXIT STATUS</title>
 
387
    <para>
 
388
      The exit status will be 0 if a new key (or password, if the
 
389
      <option>--password</option> option was used) was successfully
 
390
      created, otherwise not.
 
391
    </para>
 
392
  </refsect1>
 
393
  
 
394
  <refsect1 id="environment">
 
395
    <title>ENVIRONMENT</title>
 
396
    <variablelist>
 
397
      <varlistentry>
 
398
        <term><envar>TMPDIR</envar></term>
 
399
        <listitem>
 
400
          <para>
 
401
            If set, temporary files will be created here. See
 
402
            <citerefentry><refentrytitle>mktemp</refentrytitle>
 
403
            <manvolnum>1</manvolnum></citerefentry>.
 
404
          </para>
 
405
        </listitem>
 
406
      </varlistentry>
 
407
    </variablelist>
 
408
  </refsect1>
 
409
  
 
410
  <refsect1 id="files">
 
411
    <title>FILES</title>
 
412
    <para>
 
413
      Use the <option>--dir</option> option to change where
 
414
      <command>&COMMANDNAME;</command> will write the key files.  The
 
415
      default file names are shown here.
 
416
    </para>
 
417
    <variablelist>
 
418
      <varlistentry>
 
419
        <term><filename>/etc/mandos/seckey.txt</filename></term>
 
420
        <listitem>
 
421
          <para>
 
422
            OpenPGP secret key file which will be created or
 
423
            overwritten.
 
424
          </para>
 
425
        </listitem>
 
426
      </varlistentry>
 
427
      <varlistentry>
 
428
        <term><filename>/etc/mandos/pubkey.txt</filename></term>
 
429
        <listitem>
 
430
          <para>
 
431
            OpenPGP public key file which will be created or
 
432
            overwritten.
 
433
          </para>
 
434
        </listitem>
 
435
      </varlistentry>
 
436
      <varlistentry>
 
437
        <term><filename class="directory">/tmp</filename></term>
 
438
        <listitem>
 
439
          <para>
 
440
            Temporary files will be written here if
 
441
            <varname>TMPDIR</varname> is not set.
 
442
          </para>
 
443
        </listitem>
 
444
      </varlistentry>
 
445
    </variablelist>
 
446
  </refsect1>
 
447
  
 
448
<!--   <refsect1 id="bugs"> -->
 
449
<!--     <title>BUGS</title> -->
 
450
<!--     <para> -->
 
451
<!--     </para> -->
 
452
<!--   </refsect1> -->
 
453
  
 
454
  <refsect1 id="example">
 
455
    <title>EXAMPLE</title>
 
456
    <informalexample>
 
457
      <para>
 
458
        Normal invocation needs no options:
 
459
      </para>
 
460
      <para>
 
461
        <userinput>&COMMANDNAME;</userinput>
 
462
      </para>
 
463
    </informalexample>
 
464
    <informalexample>
 
465
      <para>
 
466
        Create key in another directory and of another type.  Force
 
467
        overwriting old key files:
 
468
      </para>
 
469
      <para>
 
470
 
 
471
<!-- do not wrap this line -->
 
472
<userinput>&COMMANDNAME; --dir ~/keydir --type RSA --force</userinput>
 
473
 
 
474
      </para>
 
475
    </informalexample>
 
476
    <informalexample>
 
477
      <para>
 
478
        Prompt for a password, encrypt it with the key in <filename
 
479
        class="directory">/etc/mandos</filename> and output a section
 
480
        suitable for <filename>clients.conf</filename>.
 
481
      </para>
 
482
      <para>
 
483
        <userinput>&COMMANDNAME; --password</userinput>
 
484
      </para>
 
485
    </informalexample>
 
486
    <informalexample>
 
487
      <para>
 
488
        Prompt for a password, encrypt it with the key in the
 
489
        <filename>client-key</filename> directory and output a section
 
490
        suitable for <filename>clients.conf</filename>.
 
491
      </para>
 
492
      <para>
 
493
 
 
494
<!-- do not wrap this line -->
 
495
<userinput>&COMMANDNAME; --password --dir client-key</userinput>
 
496
 
 
497
      </para>
 
498
    </informalexample>
 
499
  </refsect1>
 
500
  
 
501
  <refsect1 id="security">
 
502
    <title>SECURITY</title>
 
503
    <para>
 
504
      The <option>--type</option>, <option>--length</option>,
 
505
      <option>--subtype</option>, and <option>--sublength</option>
 
506
      options can be used to create keys of low security.  If in
 
507
      doubt, leave them to the default values.
 
508
    </para>
 
509
    <para>
 
510
      The key expire time is <emphasis>not</emphasis> guaranteed to be
 
511
      honored by <citerefentry><refentrytitle>mandos</refentrytitle>
 
512
      <manvolnum>8</manvolnum></citerefentry>.
 
513
    </para>
 
514
  </refsect1>
 
515
  
 
516
  <refsect1 id="see_also">
 
517
    <title>SEE ALSO</title>
 
518
    <para>
 
519
      <citerefentry><refentrytitle>intro</refentrytitle>
 
520
      <manvolnum>8mandos</manvolnum></citerefentry>,
 
521
      <citerefentry><refentrytitle>gpg</refentrytitle>
 
522
      <manvolnum>1</manvolnum></citerefentry>,
 
523
      <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
 
524
      <manvolnum>5</manvolnum></citerefentry>,
 
525
      <citerefentry><refentrytitle>mandos</refentrytitle>
 
526
      <manvolnum>8</manvolnum></citerefentry>,
 
527
      <citerefentry><refentrytitle>mandos-client</refentrytitle>
 
528
      <manvolnum>8mandos</manvolnum></citerefentry>,
 
529
      <citerefentry><refentrytitle>ssh-keyscan</refentrytitle>
 
530
      <manvolnum>1</manvolnum></citerefentry>
 
531
    </para>
 
532
  </refsect1>
 
533
  
 
534
</refentry>
 
535
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536
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537
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538
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