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Open Menu /external/mpl/bind/dist/bin/tools/nsec3hash.html 
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry">
<a name="man.nsec3hash"></a><div class="titlepage"></div>
  
  

  

  <div class="refnamediv">
<h2>Name</h2>
<p>
    <span class="application">nsec3hash</span>
     &#8212; generate NSEC3 hash
  </p>
</div>

  

  <div class="refsynopsisdiv">
<h2>Synopsis</h2>
    <div class="cmdsynopsis"><p>
      <code class="command">nsec3hash</code> 
       {<em class="replaceable"><code>salt</code></em>}
       {<em class="replaceable"><code>algorithm</code></em>}
       {<em class="replaceable"><code>iterations</code></em>}
       {<em class="replaceable"><code>domain</code></em>}
    </p></div>
    <div class="cmdsynopsis"><p>
      <code class="command">nsec3hash -r</code> 
       {<em class="replaceable"><code>algorithm</code></em>}
       {<em class="replaceable"><code>flags</code></em>}
       {<em class="replaceable"><code>iterations</code></em>}
       {<em class="replaceable"><code>salt</code></em>}
       {<em class="replaceable"><code>domain</code></em>}
    </p></div>
  </div>

  <div class="refsection">
<a name="id-1.7"></a><h2>DESCRIPTION</h2>

    <p>
      <span class="command"><strong>nsec3hash</strong></span> generates an NSEC3 hash based on
      a set of NSEC3 parameters.  This can be used to check the validity
      of NSEC3 records in a signed zone.
    </p>

    <p>
      If this command is invoked as <span class="command"><strong>nsec3hash -r</strong></span>,
      it takes arguments in an order matching the first four fields
      of an NSEC3 record, followed by the domain name: algorithm, flags,
      iterations, salt, domain.  This makes it convenient to copy and
      paste a portion of an NSEC3 or NSEC3PARAM record into a command
      line to confirm the correctness of an NSEC3 hash.
    </p>

  </div>

  <div class="refsection">
<a name="id-1.8"></a><h2>ARGUMENTS</h2>

    <div class="variablelist"><dl class="variablelist">
<dt><span class="term">salt</span></dt>
<dd>
          <p>
            The salt provided to the hash algorithm.
          </p>
        </dd>
<dt><span class="term">algorithm</span></dt>
<dd>
          <p>
            A number indicating the hash algorithm.  Currently the
            only supported hash algorithm for NSEC3 is SHA-1, which is
            indicated by the number 1; consequently "1" is the only
            useful value for this argument.
          </p>
        </dd>
<dt><span class="term">flags</span></dt>
<dd>
          <p>
            Provided for compatibility with NSEC3 record presentation
            format, but ignored since the flags do not affect the hash.
          </p>
        </dd>
<dt><span class="term">iterations</span></dt>
<dd>
          <p>
            The number of additional times the hash should be performed.
          </p>
        </dd>
<dt><span class="term">domain</span></dt>
<dd>
          <p>
            The domain name to be hashed.
          </p>
        </dd>
</dl></div>
  </div>

  <div class="refsection">
<a name="id-1.9"></a><h2>SEE ALSO</h2>

    <p>
      <em class="citetitle">BIND 9 Administrator Reference Manual</em>,
      <em class="citetitle">RFC 5155</em>.
    </p>
  </div>

</div></body>
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