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c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<title>dnssec-dsfromkey</title>
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c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en">
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<a name="man.dnssec-dsfromkey"></a><div class="titlepage"></div>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<div class="refnamediv">
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<h2>Name</h2>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<p><span class="application">dnssec-dsfromkey</span> &#8212; DNSSEC DS RR generation tool</p>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe</div>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<div class="refsynopsisdiv">
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<h2>Synopsis</h2>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<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>] [<code class="option">-l <em class="replaceable"><code>domain</code></em></code>] [<code class="option">-T <em class="replaceable"><code>TTL</code></em></code>] {keyfile}</p></div>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<div class="cmdsynopsis"><p><code class="command">dnssec-dsfromkey</code> {-s} [<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">-K <em class="replaceable"><code>directory</code></em></code>] [<code class="option">-l <em class="replaceable"><code>domain</code></em></code>] [<code class="option">-s</code>] [<code class="option">-c <em class="replaceable"><code>class</code></em></code>] [<code class="option">-T <em class="replaceable"><code>TTL</code></em></code>] [<code class="option">-f <em class="replaceable"><code>file</code></em></code>] [<code class="option">-A</code>] [<code class="option">-v <em class="replaceable"><code>level</code></em></code>] {dnsname}</p></div>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe</div>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<div class="refsect1" lang="en">
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<a name="id2543484"></a><h2>DESCRIPTION</h2>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<p><span><strong class="command">dnssec-dsfromkey</strong></span>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe outputs the Delegation Signer (DS) resource record (RR), as defined in
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe RFC 3658 and RFC 4509, for the given key(s).
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe </p>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe</div>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<div class="refsect1" lang="en">
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<a name="id2543496"></a><h2>OPTIONS</h2>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<div class="variablelist"><dl>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dt><span class="term">-1</span></dt>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dd><p>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe Use SHA-1 as the digest algorithm (the default is to use
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe both SHA-1 and SHA-256).
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov </p></dd>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dt><span class="term">-2</span></dt>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dd><p>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe Use SHA-256 as the digest algorithm.
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe </p></dd>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dt><span class="term">-a <em class="replaceable"><code>algorithm</code></em></span></dt>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dd><p>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe Select the digest algorithm. The value of
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe <code class="option">algorithm</code> must be one of SHA-1 (SHA1),
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe SHA-256 (SHA256) or GOST. These values are case insensitive.
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov </p></dd>
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov<dt><span class="term">-T <em class="replaceable"><code>TTL</code></em></span></dt>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dd><p>
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov Specifies the TTL of the DS records.
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov </p></dd>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dt><span class="term">-K <em class="replaceable"><code>directory</code></em></span></dt>
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov<dd><p>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe Look for key files (or, in keyset mode,
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov <code class="filename">keyset-</code> files) in
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe <code class="option">directory</code>.
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov </p></dd>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<dt><span class="term">-f <em class="replaceable"><code>file</code></em></span></dt>
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov<dd>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<p>
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov Zone file mode: in place of the keyfile name, the argument is
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe the DNS domain name of a zone master file, which can be read
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe from <code class="option">file</code>. If the zone name is the same as
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe <code class="option">file</code>, then it may be omitted.
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov </p>
c10c16dec587a0662068f6e2991c29ed3a9db943Richard Lowe<p>
a9478106a12424322498e53cf7cd75bd8a4d6004Yuri Pankov If <code class="option">file</code> is set to <code class="literal">"-"</code>, then
the zone data is read from the standard input. This makes it
possible to use the output of the <span><strong class="command">dig</strong></span>
command as input, as in:
</p>
<p>
<strong class="userinput"><code>dig dnskey example.com | dnssec-dsfromkey -f - example.com</code></strong>
</p>
</dd>
<dt><span class="term">-A</span></dt>
<dd><p>
Include ZSK's when generating DS records. Without this option,
only keys which have the KSK flag set will be converted to DS
records and printed. Useful only in zone file mode.
</p></dd>
<dt><span class="term">-l <em class="replaceable"><code>domain</code></em></span></dt>
<dd><p>
Generate a DLV set instead of a DS set. The specified
<code class="option">domain</code> is appended to the name for each
record in the set.
The DNSSEC Lookaside Validation (DLV) RR is described
in RFC 4431.
</p></dd>
<dt><span class="term">-s</span></dt>
<dd><p>
Keyset mode: in place of the keyfile name, the argument is
the DNS domain name of a keyset file.
</p></dd>
<dt><span class="term">-c <em class="replaceable"><code>class</code></em></span></dt>
<dd><p>
Specifies the DNS class (default is IN). Useful only
in keyset or zone file mode.
</p></dd>
<dt><span class="term">-v <em class="replaceable"><code>level</code></em></span></dt>
<dd><p>
Sets the debugging level.
</p></dd>
</dl></div>
</div>
<div class="refsect1" lang="en">
<a name="id2543722"></a><h2>EXAMPLE</h2>
<p>
To build the SHA-256 DS RR from the
<strong class="userinput"><code>Kexample.com.+003+26160</code></strong>
keyfile name, the following command would be issued:
</p>
<p><strong class="userinput"><code>dnssec-dsfromkey -2 Kexample.com.+003+26160</code></strong>
</p>
<p>
The command would print something like:
</p>
<p><strong class="userinput"><code>example.com. IN DS 26160 5 2 3A1EADA7A74B8D0BA86726B0C227AA85AB8BBD2B2004F41A868A54F0 C5EA0B94</code></strong>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2543752"></a><h2>FILES</h2>
<p>
The keyfile can be designed by the key identification
<code class="filename">Knnnn.+aaa+iiiii</code> or the full file name
<code class="filename">Knnnn.+aaa+iiiii.key</code> as generated by
<span class="refentrytitle">dnssec-keygen</span>(8).
</p>
<p>
The keyset file name is built from the <code class="option">directory</code>,
the string <code class="filename">keyset-</code> and the
<code class="option">dnsname</code>.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2543787"></a><h2>CAVEAT</h2>
<p>
A keyfile error can give a "file not found" even if the file exists.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2543797"></a><h2>SEE ALSO</h2>
<p><span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>,
<span class="citerefentry"><span class="refentrytitle">dnssec-signzone</span>(8)</span>,
<em class="citetitle">BIND 9 Administrator Reference Manual</em>,
<em class="citetitle">RFC 3658</em>,
<em class="citetitle">RFC 4431</em>.
<em class="citetitle">RFC 4509</em>.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2543836"></a><h2>AUTHOR</h2>
<p><span class="corpauthor">Internet Systems Consortium</span>
</p>
</div>
</div></body>
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