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42 <div class="refentry" lang="en">
43 <a name="man.dnssec-dsfromkey"></a><div class="titlepage"></div>
44 <div class="refnamediv">
46 <p><span class="application">dnssec-dsfromkey</span> — DNSSEC DS RR generation tool</p>
48 <div class="refsynopsisdiv">
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>
53 <div class="refsect1" lang="en">
54 <a name="id2604057"></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).
60 <div class="refsect1" lang="en">
61 <a name="id2604071"></a><h2>OPTIONS</h2>
62 <div class="variablelist"><dl>
63 <dt><span class="term">-1</span></dt>
65 Use SHA-1 as the digest algorithm (the default is to use
66 both SHA-1 and SHA-256).
68 <dt><span class="term">-2</span></dt>
70 Use SHA-256 as the digest algorithm.
72 <dt><span class="term">-a <em class="replaceable"><code>algorithm</code></em></span></dt>
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.
78 <dt><span class="term">-v <em class="replaceable"><code>level</code></em></span></dt>
80 Sets the debugging level.
82 <dt><span class="term">-s</span></dt>
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
88 <dt><span class="term">-c <em class="replaceable"><code>class</code></em></span></dt>
90 Specifies the DNS class (default is IN), useful only
93 <dt><span class="term">-d <em class="replaceable"><code>directory</code></em></span></dt>
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.
101 <div class="refsect1" lang="en">
102 <a name="id2604201"></a><h2>EXAMPLE</h2>
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:
108 <p><strong class="userinput"><code>dnssec-dsfromkey -2 Kexample.com.+003+26160</code></strong>
111 The command would print something like:
113 <p><strong class="userinput"><code>example.com. IN DS 26160 5 2 3A1EADA7A74B8D0BA86726B0C227AA85AB8BBD2B2004F41A868A54F0 C5EA0B94</code></strong>
116 <div class="refsect1" lang="en">
117 <a name="id2604237"></a><h2>FILES</h2>
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).
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>.
130 <div class="refsect1" lang="en">
131 <a name="id2604279"></a><h2>CAVEAT</h2>
133 A keyfile error can give a "file not found" even if the file exists.
136 <div class="refsect1" lang="en">
137 <a name="id2604289"></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>.
145 <div class="refsect1" lang="en">
146 <a name="id2604325"></a><h2>AUTHOR</h2>
147 <p><span class="corpauthor">Internet Systems Consortium</span>
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