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  43 <a name="man.dnssec-dsfromkey"></a><div class="titlepage"></div>
  44 <div class="refnamediv">
  45 <h2>Name</h2>
  46 <p><span class="application">dnssec-dsfromkey</span> &#8212; DNSSEC DS RR generation tool</p>
  47 </div>
  48 <div class="refsynopsisdiv">
  49 <h2>Synopsis</h2>
  50 <div class="cmdsynopsis"><p><code class="command">dnssec-dsfromkey</code>  [<code class="option">-v <em class="replaceable"><code>level</code></em></code>] [<code class="option">-1</code>] [<code class="option">-2</code>] [<code class="option">-a <em class="replaceable"><code>alg</code></em></code>] {keyfile}</p></div>
  51 <div class="cmdsynopsis"><p><code class="command">dnssec-dsfromkey</code>  {-s} [<code class="option">-v <em class="replaceable"><code>level</code></em></code>] [<code class="option">-1</code>] [<code class="option">-2</code>] [<code class="option">-a <em class="replaceable"><code>alg</code></em></code>] [<code class="option">-c <em class="replaceable"><code>class</code></em></code>] [<code class="option">-d <em class="replaceable"><code>dir</code></em></code>] {dnsname}</p></div>
  52 </div>
  53 <div class="refsect1" lang="en">
  54 <a name="id2604060"></a><h2>DESCRIPTION</h2>
  55 <p><span><strong class="command">dnssec-dsfromkey</strong></span>
  56       outputs the Delegation Signer (DS) resource record (RR), as defined in
  57       RFC 3658 and RFC 4509, for the given key(s).
  58     </p>
  59 </div>
  60 <div class="refsect1" lang="en">
  61 <a name="id2604074"></a><h2>OPTIONS</h2>
  62 <div class="variablelist"><dl>
  63 <dt><span class="term">-1</span></dt>
  64 <dd><p>
  65             Use SHA-1 as the digest algorithm (the default is to use
  66             both SHA-1 and SHA-256).
  67           </p></dd>
  68 <dt><span class="term">-2</span></dt>
  69 <dd><p>
  70             Use SHA-256 as the digest algorithm.
  71           </p></dd>
  72 <dt><span class="term">-a <em class="replaceable"><code>algorithm</code></em></span></dt>
  73 <dd><p>
  74             Select the digest algorithm. The value of
  75             <code class="option">algorithm</code> must be one of SHA-1 (SHA1) or
  76             SHA-256 (SHA256). These values are case insensitive.
  77           </p></dd>
  78 <dt><span class="term">-v <em class="replaceable"><code>level</code></em></span></dt>
  79 <dd><p>
  80             Sets the debugging level.
  81           </p></dd>
  82 <dt><span class="term">-s</span></dt>
  83 <dd><p>
  84             Keyset mode: in place of the keyfile name, the argument is
  85             the DNS domain name of a keyset file. Following options make sense
  86             only in this mode.
  87           </p></dd>
  88 <dt><span class="term">-c <em class="replaceable"><code>class</code></em></span></dt>
  89 <dd><p>
  90             Specifies the DNS class (default is IN), useful only
  91             in the keyset mode.
  92           </p></dd>
  93 <dt><span class="term">-d <em class="replaceable"><code>directory</code></em></span></dt>
  94 <dd><p>
  95             Look for <code class="filename">keyset</code> files in
  96             <code class="option">directory</code> as the directory, ignored when
  97             not in the keyset mode.
  98           </p></dd>
  99 </dl></div>
 100 </div>
 101 <div class="refsect1" lang="en">
 102 <a name="id2604204"></a><h2>EXAMPLE</h2>
 103 <p>
 104       To build the SHA-256 DS RR from the
 105       <strong class="userinput"><code>Kexample.com.+003+26160</code></strong>
 106       keyfile name, the following command would be issued:
 107     </p>
 108 <p><strong class="userinput"><code>dnssec-dsfromkey -2 Kexample.com.+003+26160</code></strong>
 109     </p>
 110 <p>
 111       The command would print something like:
 112     </p>
 113 <p><strong class="userinput"><code>example.com. IN DS 26160 5 2 3A1EADA7A74B8D0BA86726B0C227AA85AB8BBD2B2004F41A868A54F0 C5EA0B94</code></strong>
 114     </p>
 115 </div>
 116 <div class="refsect1" lang="en">
 117 <a name="id2604241"></a><h2>FILES</h2>
 118 <p>
 119       The keyfile can be designed by the key identification
 120       <code class="filename">Knnnn.+aaa+iiiii</code> or the full file name
 121       <code class="filename">Knnnn.+aaa+iiiii.key</code> as generated by
 122       <span class="refentrytitle">dnssec-keygen</span>(8).
 123     </p>
 124 <p>
 125       The keyset file name is built from the <code class="option">directory</code>,
 126       the string <code class="filename">keyset-</code> and the
 127       <code class="option">dnsname</code>.
 128     </p>
 129 </div>
 130 <div class="refsect1" lang="en">
 131 <a name="id2604282"></a><h2>CAVEAT</h2>
 132 <p>
 133       A keyfile error can give a "file not found" even if the file exists.
 134     </p>
 135 </div>
 136 <div class="refsect1" lang="en">
 137 <a name="id2604292"></a><h2>SEE ALSO</h2>
 138 <p><span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>,
 139       <span class="citerefentry"><span class="refentrytitle">dnssec-signzone</span>(8)</span>,
 140       <em class="citetitle">BIND 9 Administrator Reference Manual</em>,
 141       <em class="citetitle">RFC 3658</em>,
 142       <em class="citetitle">RFC 4509</em>.
 143     </p>
 144 </div>
 145 <div class="refsect1" lang="en">
 146 <a name="id2604328"></a><h2>AUTHOR</h2>
 147 <p><span class="corpauthor">Internet Systems Consortium</span>
 148     </p>
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