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<title>class OpenSSL::PKey::DH - net-ssh 4.2.0</title>
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<h1 id="class-OpenSSL::PKey::DH" class="class">
class OpenSSL::PKey::DH
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<section class="description">
<p>This class is originally defined in the <a href="OpenSSL.html">OpenSSL</a>
module. As needed, methods have been added to it by the <a
href="../../Net/SSH.html">Net::SSH</a> module for convenience in dealing
with SSH functionality.</p>
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<span class="method-name">valid?</span><span
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<p>Determines whether the pub_key for this key is valid. (This algorithm
lifted more-or-less directly from OpenSSH, dh.c, dh_pub_is_valid.)</p>
<div class="method-source-code" id="valid-3F-source">
<pre><span class="ruby-comment"># File lib/net/ssh/transport/openssl.rb, line 42</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">valid?</span>
<span class="ruby-keyword">return</span> <span class="ruby-keyword">false</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">pub_key</span>.<span class="ruby-identifier">nil?</span> <span class="ruby-operator">||</span> <span class="ruby-identifier">pub_key</span> <span class="ruby-operator"><</span> <span class="ruby-value">0</span>
<span class="ruby-identifier">bits_set</span> = <span class="ruby-value">0</span>
<span class="ruby-identifier">pub_key</span>.<span class="ruby-identifier">num_bits</span>.<span class="ruby-identifier">times</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">i</span><span class="ruby-operator">|</span> <span class="ruby-identifier">bits_set</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">pub_key</span>.<span class="ruby-identifier">bit_set?</span>(<span class="ruby-identifier">i</span>) }
<span class="ruby-keyword">return</span> ( <span class="ruby-identifier">bits_set</span> <span class="ruby-operator">></span> <span class="ruby-value">1</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">pub_key</span> <span class="ruby-operator"><</span> <span class="ruby-identifier">p</span> )
<span class="ruby-keyword">end</span></pre>
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