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42<div class="refentry" lang="en">
43<a name="man.dnssec-keyfromlabel"></a><div class="titlepage"></div>
44<div class="refnamediv">
45<h2>Name</h2>
46<p><span class="application">dnssec-keyfromlabel</span> &#8212; DNSSEC key generation tool</p>
47</div>
48<div class="refsynopsisdiv">
49<h2>Synopsis</h2>
50<div class="cmdsynopsis"><p><code class="command">dnssec-keyfromlabel</code>  {-l <em class="replaceable"><code>label</code></em>} [<code class="option">-3</code>] [<code class="option">-a <em class="replaceable"><code>algorithm</code></em></code>] [<code class="option">-A <em class="replaceable"><code>date/offset</code></em></code>] [<code class="option">-c <em class="replaceable"><code>class</code></em></code>] [<code class="option">-D <em class="replaceable"><code>date/offset</code></em></code>] [<code class="option">-E <em class="replaceable"><code>engine</code></em></code>] [<code class="option">-f <em class="replaceable"><code>flag</code></em></code>] [<code class="option">-G</code>] [<code class="option">-I <em class="replaceable"><code>date/offset</code></em></code>] [<code class="option">-i <em class="replaceable"><code>interval</code></em></code>] [<code class="option">-k</code>] [<code class="option">-K <em class="replaceable"><code>directory</code></em></code>] [<code class="option">-L <em class="replaceable"><code>ttl</code></em></code>] [<code class="option">-n <em class="replaceable"><code>nametype</code></em></code>] [<code class="option">-P <em class="replaceable"><code>date/offset</code></em></code>] [<code class="option">-p <em class="replaceable"><code>protocol</code></em></code>] [<code class="option">-R <em class="replaceable"><code>date/offset</code></em></code>] [<code class="option">-S <em class="replaceable"><code>key</code></em></code>] [<code class="option">-t <em class="replaceable"><code>type</code></em></code>] [<code class="option">-v <em class="replaceable"><code>level</code></em></code>] [<code class="option">-V</code>] [<code class="option">-y</code>] {name}</p></div>
51</div>
52<div class="refsect1" lang="en">
53<a name="id2621113"></a><h2>DESCRIPTION</h2>
54<p><span><strong class="command">dnssec-keyfromlabel</strong></span>
55      generates a key pair of files that referencing a key object stored
56      in a cryptographic hardware service module (HSM).  The private key
57      file can be used for DNSSEC signing of zone data as if it were a
58      conventional signing key created by <span><strong class="command">dnssec-keygen</strong></span>,
59      but the key material is stored within the HSM, and the actual signing
60      takes place there.
61    </p>
62<p>
63      The <code class="option">name</code> of the key is specified on the command
64      line.  This must match the name of the zone for which the key is
65      being generated.
66    </p>
67</div>
68<div class="refsect1" lang="en">
69<a name="id2621139"></a><h2>OPTIONS</h2>
70<div class="variablelist"><dl>
71<dt><span class="term">-a <em class="replaceable"><code>algorithm</code></em></span></dt>
72<dd>
73<p>
74	    Selects the cryptographic algorithm.  The value of
75            <code class="option">algorithm</code> must be one of RSAMD5, RSASHA1,
76	    DSA, NSEC3RSASHA1, NSEC3DSA, RSASHA256, RSASHA512, ECCGOST,
77	    ECDSAP256SHA256 or ECDSAP384SHA384.
78	    These values are case insensitive.
79	  </p>
80<p>
81            If no algorithm is specified, then RSASHA1 will be used by
82            default, unless the <code class="option">-3</code> option is specified,
83            in which case NSEC3RSASHA1 will be used instead.  (If
84            <code class="option">-3</code> is used and an algorithm is specified,
85            that algorithm will be checked for compatibility with NSEC3.)
86          </p>
87<p>
88            Note 1: that for DNSSEC, RSASHA1 is a mandatory to implement
89            algorithm, and DSA is recommended.
90          </p>
91<p>
92            Note 2: DH automatically sets the -k flag.
93          </p>
94</dd>
95<dt><span class="term">-3</span></dt>
96<dd><p>
97	    Use an NSEC3-capable algorithm to generate a DNSSEC key.
98            If this option is used and no algorithm is explicitly
99            set on the command line, NSEC3RSASHA1 will be used by
100            default.
101          </p></dd>
102<dt><span class="term">-E <em class="replaceable"><code>engine</code></em></span></dt>
103<dd>
104<p>
105            Specifies the cryptographic hardware to use.
106          </p>
107<p>
108            When BIND is built with OpenSSL PKCS#11 support, this defaults
109            to the string "pkcs11", which identifies an OpenSSL engine
110            that can drive a cryptographic accelerator or hardware service
111            module.  When BIND is built with native PKCS#11 cryptography
112            (--enable-native-pkcs11), it defaults to the path of the PKCS#11
113            provider library specified via "--with-pkcs11".
114          </p>
115</dd>
116<dt><span class="term">-l <em class="replaceable"><code>label</code></em></span></dt>
117<dd>
118<p>
119            Specifies the label for a key pair in the crypto hardware.
120          </p>
121<p>
122            When <acronym class="acronym">BIND</acronym> 9 is built with OpenSSL-based
123            PKCS#11 support, the label is an arbitrary string that
124            identifies a particular key.  It may be preceded by an
125            optional OpenSSL engine name, followed by a colon, as in
126            "pkcs11:<em class="replaceable"><code>keylabel</code></em>".
127          </p>
128<p>
129            When <acronym class="acronym">BIND</acronym> 9 is built with native PKCS#11
130            support, the label is a PKCS#11 URI string in the format
131            "pkcs11:<code class="option">keyword</code>=<em class="replaceable"><code>value</code></em>[<span class="optional">;<code class="option">keyword</code>=<em class="replaceable"><code>value</code></em>;...</span>]"
132            Keywords include "token", which identifies the HSM; "object", which
133            identifies the key; and "pin-source", which identifies a file from
134            which the HSM's PIN code can be obtained.  The label will be
135            stored in the on-disk "private" file.
136          </p>
137<p>
138            If the label contains a
139            <code class="option">pin-source</code> field, tools using the generated
140            key files will be able to use the HSM for signing and other
141            operations without any need for an operator to manually enter
142            a PIN.  Note: Making the HSM's PIN accessible in this manner
143            may reduce the security advantage of using an HSM; be sure
144            this is what you want to do before making use of this feature.
145          </p>
146</dd>
147<dt><span class="term">-n <em class="replaceable"><code>nametype</code></em></span></dt>
148<dd><p>
149            Specifies the owner type of the key.  The value of
150            <code class="option">nametype</code> must either be ZONE (for a DNSSEC
151            zone key (KEY/DNSKEY)), HOST or ENTITY (for a key associated with
152            a host (KEY)),
153            USER (for a key associated with a user(KEY)) or OTHER (DNSKEY).
154            These values are case insensitive.
155          </p></dd>
156<dt><span class="term">-C</span></dt>
157<dd><p>
158	    Compatibility mode:  generates an old-style key, without
159	    any metadata.  By default, <span><strong class="command">dnssec-keyfromlabel</strong></span>
160	    will include the key's creation date in the metadata stored
161	    with the private key, and other dates may be set there as well
162	    (publication date, activation date, etc).  Keys that include
163	    this data may be incompatible with older versions of BIND; the
164	    <code class="option">-C</code> option suppresses them.
165          </p></dd>
166<dt><span class="term">-c <em class="replaceable"><code>class</code></em></span></dt>
167<dd><p>
168            Indicates that the DNS record containing the key should have
169            the specified class.  If not specified, class IN is used.
170          </p></dd>
171<dt><span class="term">-f <em class="replaceable"><code>flag</code></em></span></dt>
172<dd><p>
173            Set the specified flag in the flag field of the KEY/DNSKEY record.
174            The only recognized flags are KSK (Key Signing Key) and REVOKE.
175          </p></dd>
176<dt><span class="term">-G</span></dt>
177<dd><p>
178            Generate a key, but do not publish it or sign with it.  This
179            option is incompatible with -P and -A.
180          </p></dd>
181<dt><span class="term">-h</span></dt>
182<dd><p>
183            Prints a short summary of the options and arguments to
184            <span><strong class="command">dnssec-keyfromlabel</strong></span>.
185          </p></dd>
186<dt><span class="term">-K <em class="replaceable"><code>directory</code></em></span></dt>
187<dd><p>
188            Sets the directory in which the key files are to be written.
189          </p></dd>
190<dt><span class="term">-k</span></dt>
191<dd><p>
192            Generate KEY records rather than DNSKEY records.
193          </p></dd>
194<dt><span class="term">-L <em class="replaceable"><code>ttl</code></em></span></dt>
195<dd><p>
196            Sets the default TTL to use for this key when it is converted
197            into a DNSKEY RR.  If the key is imported into a zone,
198            this is the TTL that will be used for it, unless there was
199            already a DNSKEY RRset in place, in which case the existing TTL
200            would take precedence.  Setting the default TTL to
201            <code class="literal">0</code> or <code class="literal">none</code> removes it.
202          </p></dd>
203<dt><span class="term">-p <em class="replaceable"><code>protocol</code></em></span></dt>
204<dd><p>
205            Sets the protocol value for the key.  The protocol
206            is a number between 0 and 255.  The default is 3 (DNSSEC).
207            Other possible values for this argument are listed in
208            RFC 2535 and its successors.
209          </p></dd>
210<dt><span class="term">-S <em class="replaceable"><code>key</code></em></span></dt>
211<dd><p>
212            Generate a key as an explicit successor to an existing key.
213	    The name, algorithm, size, and type of the key will be set
214	    to match the predecessor. The activation date of the new
215	    key will be set to the inactivation date of the existing
216	    one. The publication date will be set to the activation
217	    date minus the prepublication interval, which defaults to
218	    30 days.
219          </p></dd>
220<dt><span class="term">-t <em class="replaceable"><code>type</code></em></span></dt>
221<dd><p>
222            Indicates the use of the key.  <code class="option">type</code> must be
223            one of AUTHCONF, NOAUTHCONF, NOAUTH, or NOCONF.  The default
224            is AUTHCONF.  AUTH refers to the ability to authenticate
225            data, and CONF the ability to encrypt data.
226          </p></dd>
227<dt><span class="term">-v <em class="replaceable"><code>level</code></em></span></dt>
228<dd><p>
229            Sets the debugging level.
230          </p></dd>
231<dt><span class="term">-V</span></dt>
232<dd><p>
233	    Prints version information.
234	  </p></dd>
235<dt><span class="term">-y</span></dt>
236<dd><p>
237            Allows DNSSEC key files to be generated even if the key ID
238	    would collide with that of an existing key, in the event of
239	    either key being revoked.  (This is only safe to use if you
240            are sure you won't be using RFC 5011 trust anchor maintenance
241            with either of the keys involved.)
242          </p></dd>
243</dl></div>
244</div>
245<div class="refsect1" lang="en">
246<a name="id2672193"></a><h2>TIMING OPTIONS</h2>
247<p>
248      Dates can be expressed in the format YYYYMMDD or YYYYMMDDHHMMSS.
249      If the argument begins with a '+' or '-', it is interpreted as
250      an offset from the present time.  For convenience, if such an offset
251      is followed by one of the suffixes 'y', 'mo', 'w', 'd', 'h', or 'mi',
252      then the offset is computed in years (defined as 365 24-hour days,
253      ignoring leap years), months (defined as 30 24-hour days), weeks,
254      days, hours, or minutes, respectively.  Without a suffix, the offset
255      is computed in seconds.  To explicitly prevent a date from being
256      set, use 'none' or 'never'.
257    </p>
258<div class="variablelist"><dl>
259<dt><span class="term">-P <em class="replaceable"><code>date/offset</code></em></span></dt>
260<dd><p>
261            Sets the date on which a key is to be published to the zone.
262            After that date, the key will be included in the zone but will
263            not be used to sign it.  If not set, and if the -G option has
264            not been used, the default is "now".
265          </p></dd>
266<dt><span class="term">-A <em class="replaceable"><code>date/offset</code></em></span></dt>
267<dd><p>
268            Sets the date on which the key is to be activated.  After that
269            date, the key will be included in the zone and used to sign
270            it.  If not set, and if the -G option has not been used, the
271            default is "now".
272          </p></dd>
273<dt><span class="term">-R <em class="replaceable"><code>date/offset</code></em></span></dt>
274<dd><p>
275            Sets the date on which the key is to be revoked.  After that
276            date, the key will be flagged as revoked.  It will be included
277            in the zone and will be used to sign it.
278          </p></dd>
279<dt><span class="term">-I <em class="replaceable"><code>date/offset</code></em></span></dt>
280<dd><p>
281            Sets the date on which the key is to be retired.  After that
282            date, the key will still be included in the zone, but it
283            will not be used to sign it.
284          </p></dd>
285<dt><span class="term">-D <em class="replaceable"><code>date/offset</code></em></span></dt>
286<dd><p>
287            Sets the date on which the key is to be deleted.  After that
288            date, the key will no longer be included in the zone.  (It
289            may remain in the key repository, however.)
290          </p></dd>
291<dt><span class="term">-i <em class="replaceable"><code>interval</code></em></span></dt>
292<dd>
293<p>
294            Sets the prepublication interval for a key.  If set, then
295            the publication and activation dates must be separated by at least
296            this much time.  If the activation date is specified but the
297            publication date isn't, then the publication date will default
298            to this much time before the activation date; conversely, if
299            the publication date is specified but activation date isn't,
300            then activation will be set to this much time after publication.
301          </p>
302<p>
303            If the key is being created as an explicit successor to another
304            key, then the default prepublication interval is 30 days;
305            otherwise it is zero.
306          </p>
307<p>
308            As with date offsets, if the argument is followed by one of
309            the suffixes 'y', 'mo', 'w', 'd', 'h', or 'mi', then the
310            interval is measured in years, months, weeks, days, hours,
311            or minutes, respectively.  Without a suffix, the interval is
312            measured in seconds.
313          </p>
314</dd>
315</dl></div>
316</div>
317<div class="refsect1" lang="en">
318<a name="id2672451"></a><h2>GENERATED KEY FILES</h2>
319<p>
320      When <span><strong class="command">dnssec-keyfromlabel</strong></span> completes
321      successfully,
322      it prints a string of the form <code class="filename">Knnnn.+aaa+iiiii</code>
323      to the standard output.  This is an identification string for
324      the key files it has generated.
325    </p>
326<div class="itemizedlist"><ul type="disc">
327<li><p><code class="filename">nnnn</code> is the key name.
328        </p></li>
329<li><p><code class="filename">aaa</code> is the numeric representation
330          of the algorithm.
331        </p></li>
332<li><p><code class="filename">iiiii</code> is the key identifier (or
333          footprint).
334        </p></li>
335</ul></div>
336<p><span><strong class="command">dnssec-keyfromlabel</strong></span>
337      creates two files, with names based
338      on the printed string.  <code class="filename">Knnnn.+aaa+iiiii.key</code>
339      contains the public key, and
340      <code class="filename">Knnnn.+aaa+iiiii.private</code> contains the
341      private key.
342    </p>
343<p>
344      The <code class="filename">.key</code> file contains a DNS KEY record
345      that
346      can be inserted into a zone file (directly or with a $INCLUDE
347      statement).
348    </p>
349<p>
350      The <code class="filename">.private</code> file contains
351      algorithm-specific
352      fields.  For obvious security reasons, this file does not have
353      general read permission.
354    </p>
355</div>
356<div class="refsect1" lang="en">
357<a name="id2672545"></a><h2>SEE ALSO</h2>
358<p><span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>,
359      <span class="citerefentry"><span class="refentrytitle">dnssec-signzone</span>(8)</span>,
360      <em class="citetitle">BIND 9 Administrator Reference Manual</em>,
361      <em class="citetitle">RFC 4034</em>,
362      <em class="citetitle">The PKCS#11 URI Scheme (draft-pechanec-pkcs11uri-13)</em>.
363    </p>
364</div>
365<div class="refsect1" lang="en">
366<a name="id2672582"></a><h2>AUTHOR</h2>
367<p><span class="corpauthor">Internet Systems Consortium</span>
368    </p>
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