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  31. <tr><th colspan="3" align="center"><span class="application">dnssec-dsfromkey</span></th></tr>
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  42. <div class="refentry" lang="en">
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  43. <a name="man.dnssec-dsfromkey"></a><div class="titlepage"></div>
    44. 

  44. <div class="refnamediv">
    45. 

  45. <h2>Name</h2>
    46. 

  46. <p><span class="application">dnssec-dsfromkey</span> &#8212; DNSSEC DS RR generation tool</p>
    47. 

  47. </div>
    48. 

  48. <div class="refsynopsisdiv">
    49. 

  49. <h2>Synopsis</h2>
    50. 

  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>] [<code class="option">-l <em class="replaceable"><code>domain</code></em></code>] {keyfile}</p></div>
    51. 

  51. <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">-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>
    52. 

  52. </div>
    53. 

  53. <div class="refsect1" lang="en">
    54. 

  54. <a name="id2611846"></a><h2>DESCRIPTION</h2>
    55. 

  55. <p><span><strong class="command">dnssec-dsfromkey</strong></span>
    56. 

  56.       outputs the Delegation Signer (DS) resource record (RR), as defined in
    57. 

  57.       RFC 3658 and RFC 4509, for the given key(s).
    58. 

  58.     </p>
    59. 

  59. </div>
    60. 

  60. <div class="refsect1" lang="en">
    61. 

  61. <a name="id2611860"></a><h2>OPTIONS</h2>
    62. 

  62. <div class="variablelist"><dl>
    63. 

  63. <dt><span class="term">-1</span></dt>
    64. 

  64. <dd><p>
    65. 

  65.             Use SHA-1 as the digest algorithm (the default is to use
    66. 

  66.             both SHA-1 and SHA-256).
    67. 

  67.           </p></dd>
    68. 

  68. <dt><span class="term">-2</span></dt>
    69. 

  69. <dd><p>
    70. 

  70.             Use SHA-256 as the digest algorithm.
    71. 

  71.           </p></dd>
    72. 

  72. <dt><span class="term">-a <em class="replaceable"><code>algorithm</code></em></span></dt>
    73. 

  73. <dd><p>
    74. 

  74.             Select the digest algorithm. The value of
    75. 

  75.             <code class="option">algorithm</code> must be one of SHA-1 (SHA1),
    76. 

  76.             SHA-256 (SHA256) or GOST. These values are case insensitive.
    77. 

  77.           </p></dd>
    78. 

  78. <dt><span class="term">-K <em class="replaceable"><code>directory</code></em></span></dt>
    79. 

  79. <dd><p>
    80. 

  80.             Look for key files (or, in keyset mode,
    81. 

  81.             <code class="filename">keyset-</code> files) in
    82. 

  82.             <code class="option">directory</code>.
    83. 

  83.           </p></dd>
    84. 

  84. <dt><span class="term">-f <em class="replaceable"><code>file</code></em></span></dt>
    85. 

  85. <dd><p>
    86. 

  86.             Zone file mode: in place of the keyfile name, the argument is
    87. 

  87.             the DNS domain name of a zone master file, which can be read
    88. 

  88.             from <code class="option">file</code>.  If the zone name is the same as
    89. 

  89.             <code class="option">file</code>, then it may be omitted.
    90. 

  90.           </p></dd>
    91. 

  91. <dt><span class="term">-A</span></dt>
    92. 

  92. <dd><p>
    93. 

  93.             Include ZSK's when generating DS records.  Without this option,
    94. 

  94.             only keys which have the KSK flag set will be converted to DS
    95. 

  95.             records and printed.  Useful only in zone file mode. 
    96. 

  96.           </p></dd>
    97. 

  97. <dt><span class="term">-l <em class="replaceable"><code>domain</code></em></span></dt>
    98. 

  98. <dd><p>
    99. 

  99.             Generate a DLV set instead of a DS set.  The specified
    100. 

  100.             <code class="option">domain</code> is appended to the name for each
    101. 

  101.             record in the set.
    102. 

  102.             The DNSSEC Lookaside Validation (DLV) RR is described
    103. 

  103.             in RFC 4431.
    104. 

  104.           </p></dd>
    105. 

  105. <dt><span class="term">-s</span></dt>
    106. 

  106. <dd><p>
    107. 

  107.             Keyset mode: in place of the keyfile name, the argument is
    108. 

  108.             the DNS domain name of a keyset file.
    109. 

  109.           </p></dd>
    110. 

  110. <dt><span class="term">-c <em class="replaceable"><code>class</code></em></span></dt>
    111. 

  111. <dd><p>
    112. 

  112.             Specifies the DNS class (default is IN).  Useful only
    113. 

  113.             in keyset or zone file mode.
    114. 

  114.           </p></dd>
    115. 

  115. <dt><span class="term">-v <em class="replaceable"><code>level</code></em></span></dt>
    116. 

  116. <dd><p>
    117. 

  117.             Sets the debugging level.
    118. 

  118.           </p></dd>
    119. 

  119. </dl></div>
    120. 

  120. </div>
    121. 

  121. <div class="refsect1" lang="en">
    122. 

  122. <a name="id2612526"></a><h2>EXAMPLE</h2>
    123. 

  123. <p>
    124. 

  124.       To build the SHA-256 DS RR from the
    125. 

  125.       <strong class="userinput"><code>Kexample.com.+003+26160</code></strong>
    126. 

  126.       keyfile name, the following command would be issued:
    127. 

  127.     </p>
    128. 

  128. <p><strong class="userinput"><code>dnssec-dsfromkey -2 Kexample.com.+003+26160</code></strong>
    129. 

  129.     </p>
    130. 

  130. <p>
    131. 

  131.       The command would print something like:
    132. 

  132.     </p>
    133. 

  133. <p><strong class="userinput"><code>example.com. IN DS 26160 5 2 3A1EADA7A74B8D0BA86726B0C227AA85AB8BBD2B2004F41A868A54F0 C5EA0B94</code></strong>
    134. 

  134.     </p>
    135. 

  135. </div>
    136. 

  136. <div class="refsect1" lang="en">
    137. 

  137. <a name="id2612563"></a><h2>FILES</h2>
    138. 

  138. <p>
    139. 

  139.       The keyfile can be designed by the key identification
    140. 

  140.       <code class="filename">Knnnn.+aaa+iiiii</code> or the full file name
    141. 

  141.       <code class="filename">Knnnn.+aaa+iiiii.key</code> as generated by
    142. 

  142.       <span class="refentrytitle">dnssec-keygen</span>(8).
    143. 

  143.     </p>
    144. 

  144. <p>
    145. 

  145.       The keyset file name is built from the <code class="option">directory</code>,
    146. 

  146.       the string <code class="filename">keyset-</code> and the
    147. 

  147.       <code class="option">dnsname</code>.
    148. 

  148.     </p>
    149. 

  149. </div>
    150. 

  150. <div class="refsect1" lang="en">
    151. 

  151. <a name="id2612604"></a><h2>CAVEAT</h2>
    152. 

  152. <p>
    153. 

  153.       A keyfile error can give a "file not found" even if the file exists.
    154. 

  154.     </p>
    155. 

  155. </div>
    156. 

  156. <div class="refsect1" lang="en">
    157. 

  157. <a name="id2612614"></a><h2>SEE ALSO</h2>
    158. 

  158. <p><span class="citerefentry"><span class="refentrytitle">dnssec-keygen</span>(8)</span>,
    159. 

  159.       <span class="citerefentry"><span class="refentrytitle">dnssec-signzone</span>(8)</span>,
    160. 

  160.       <em class="citetitle">BIND 9 Administrator Reference Manual</em>,
    161. 

  161.       <em class="citetitle">RFC 3658</em>,
    162. 

  162.       <em class="citetitle">RFC 4431</em>.
    163. 

  163.       <em class="citetitle">RFC 4509</em>.
    164. 

  164.     </p>
    165. 

  165. </div>
    166. 

  166. <div class="refsect1" lang="en">
    167. 

  167. <a name="id2612858"></a><h2>AUTHOR</h2>
    168. 

  168. <p><span class="corpauthor">Internet Systems Consortium</span>
    169. 

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    170. 

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