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fd2597f75693a2279fdf588bd40dfe2407c42028Tinderbox User<a name="man.dnssec-dsfromkey"></a><div class="titlepage"></div>
fd2597f75693a2279fdf588bd40dfe2407c42028Tinderbox User<p><span class="application">dnssec-dsfromkey</span> — DNSSEC DS RR generation tool</p>
af40ebed6257e4ac1996144530b3de317cf4da11Tinderbox User<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">-C</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>
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein<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>
af40ebed6257e4ac1996144530b3de317cf4da11Tinderbox User<div class="cmdsynopsis"><p><code class="command">dnssec-dsfromkey</code> [<code class="option">-h</code>] [<code class="option">-V</code>]</p></div>
af40ebed6257e4ac1996144530b3de317cf4da11Tinderbox User<p><span><strong class="command">dnssec-dsfromkey</strong></span>
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein outputs the Delegation Signer (DS) resource record (RR), as defined in
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein RFC 3658 and RFC 4509, for the given key(s).
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein Use SHA-1 as the digest algorithm (the default is to use
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein both SHA-1 and SHA-256).
fd2597f75693a2279fdf588bd40dfe2407c42028Tinderbox User Use SHA-256 as the digest algorithm.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein<dt><span class="term">-a <em class="replaceable"><code>algorithm</code></em></span></dt>
14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt Select the digest algorithm. The value of
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein <code class="option">algorithm</code> must be one of SHA-1 (SHA1),
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein SHA-256 (SHA256), GOST or SHA-384 (SHA384).
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein These values are case insensitive.
727f5b8846457a33d06f515a10a7e1aa849ddf18Andreas Gustafsson Generate CDS records rather than DS records. This is mutually
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce exclusive with generating lookaside records.
ac93437301f55ed69bf85883a497a75598c628f9Automatic Updater<dt><span class="term">-T <em class="replaceable"><code>TTL</code></em></span></dt>
727f5b8846457a33d06f515a10a7e1aa849ddf18Andreas Gustafsson Specifies the TTL of the DS records.
ac93437301f55ed69bf85883a497a75598c628f9Automatic Updater<dt><span class="term">-K <em class="replaceable"><code>directory</code></em></span></dt>
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce Look for key files (or, in keyset mode,
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce<dt><span class="term">-f <em class="replaceable"><code>file</code></em></span></dt>
fd2597f75693a2279fdf588bd40dfe2407c42028Tinderbox User Zone file mode: in place of the keyfile name, the argument is
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein the DNS domain name of a zone master file, which can be read
af40ebed6257e4ac1996144530b3de317cf4da11Tinderbox User from <code class="option">file</code>. If the zone name is the same as
fd2597f75693a2279fdf588bd40dfe2407c42028Tinderbox User <code class="option">file</code>, then it may be omitted.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein If <code class="option">file</code> is set to <code class="literal">"-"</code>, then
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein the zone data is read from the standard input. This makes it
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein possible to use the output of the <span><strong class="command">dig</strong></span>
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein command as input, as in:
ac93437301f55ed69bf85883a497a75598c628f9Automatic Updater <strong class="userinput"><code>dig dnskey example.com | dnssec-dsfromkey -f - example.com</code></strong>
ac93437301f55ed69bf85883a497a75598c628f9Automatic Updater Include ZSKs when generating DS records. Without this option,
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce only keys which have the KSK flag set will be converted to DS
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce records and printed. Useful only in zone file mode.
ac93437301f55ed69bf85883a497a75598c628f9Automatic Updater<dt><span class="term">-l <em class="replaceable"><code>domain</code></em></span></dt>
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce Generate a DLV set instead of a DS set. The specified
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce <code class="option">domain</code> is appended to the name for each
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce record in the set.
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce The DNSSEC Lookaside Validation (DLV) RR is described
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce in RFC 4431. This is mutually exclusive with generating
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce CDS records.
ac93437301f55ed69bf85883a497a75598c628f9Automatic Updater Keyset mode: in place of the keyfile name, the argument is
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce the DNS domain name of a keyset file.
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce<dt><span class="term">-c <em class="replaceable"><code>class</code></em></span></dt>
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce Specifies the DNS class (default is IN). Useful only
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce in keyset or zone file mode.
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce<dt><span class="term">-v <em class="replaceable"><code>level</code></em></span></dt>
f293a69bcd1c1dd7bdac8f4102fc2398b9e475c8Eric Luce Sets the debugging level.
fd2597f75693a2279fdf588bd40dfe2407c42028Tinderbox User Prints usage information.
af40ebed6257e4ac1996144530b3de317cf4da11Tinderbox User Prints version information.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein To build the SHA-256 DS RR from the
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein <strong class="userinput"><code>Kexample.com.+003+26160</code></strong>
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein keyfile name, the following command would be issued:
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein<p><strong class="userinput"><code>dnssec-dsfromkey -2 Kexample.com.+003+26160</code></strong>
14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt The command would print something like:
14a656f94b1fd0ababd84a772228dfa52276ba15Evan Hunt<p><strong class="userinput"><code>example.com. IN DS 26160 5 2 3A1EADA7A74B8D0BA86726B0C227AA85AB8BBD2B2004F41A868A54F0 C5EA0B94</code></strong>
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein The keyfile can be designed by the key identification
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein <code class="filename">Knnnn.+aaa+iiiii</code> or the full file name
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein <code class="filename">Knnnn.+aaa+iiiii.key</code> as generated by
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein <span class="refentrytitle">dnssec-keygen</span>(8).
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein The keyset file name is built from the <code class="option">directory</code>,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein the string <code class="filename">keyset-</code> and the
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein A keyfile error can give a "file not found" even if the file exists.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein<p><span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein <span class="citerefentry"><span class="refentrytitle">dnssec-signzone</span>(8)</span>,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein <em class="citetitle">BIND 9 Administrator Reference Manual</em>,
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