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<h1 class="class">Rack::Auth::Digest::Nonce</h1>
<div id="description" class="description">
<p><a href="Nonce.html">Rack::Auth::Digest::Nonce</a> is the default nonce
generator for the <a href="MD5.html">Rack::Auth::Digest::MD5</a>
authentication handler.</p>
<p><tt>private_key</tt> needs to set to a constant string.</p>
<p><tt>time_limit</tt> can be optionally set to an integer (number of
seconds), to limit the validity of the generated nonces.</p>
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<a name="private_key="></a>
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<span class="method-name">private_key</span><span
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<pre>
<span class="ruby-comment"># File lib/rack/auth/digest/nonce.rb, line 24</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">timestamp</span> = <span class="ruby-constant">Time</span>.<span class="ruby-identifier">now</span>, <span class="ruby-identifier">given_digest</span> = <span class="ruby-keyword">nil</span>)
<span class="ruby-ivar">@timestamp</span>, <span class="ruby-ivar">@given_digest</span> = <span class="ruby-identifier">timestamp</span>.<span class="ruby-identifier">to_i</span>, <span class="ruby-identifier">given_digest</span>
<span class="ruby-keyword">end</span></pre>
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<pre>
<span class="ruby-comment"># File lib/rack/auth/digest/nonce.rb, line 20</span>
<span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier">parse</span>(<span class="ruby-identifier">string</span>)
<span class="ruby-identifier">new</span>(*<span class="ruby-identifier">string</span>.<span class="ruby-identifier">unpack</span>(<span class="ruby-string">"m*"</span>).<span class="ruby-identifier">first</span>.<span class="ruby-identifier">split</span>(<span class="ruby-string">' '</span>, <span class="ruby-value">2</span>))
<span class="ruby-keyword">end</span></pre>
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<span class="method-name">digest</span><span
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<div class="method-source-code" id="digest-source">
<pre>
<span class="ruby-comment"># File lib/rack/auth/digest/nonce.rb, line 32</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">digest</span>
<span class="ruby-operator">::</span><span class="ruby-constant">Digest</span><span class="ruby-operator">::</span><span class="ruby-constant">MD5</span>.<span class="ruby-identifier">hexdigest</span>([ <span class="ruby-ivar">@timestamp</span>, <span class="ruby-keyword">self</span>.<span class="ruby-identifier">class</span>.<span class="ruby-identifier">private_key</span> ] * <span class="ruby-string">':'</span>)
<span class="ruby-keyword">end</span></pre>
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<div class="method-source-code" id="fresh-3F-source">
<pre>
<span class="ruby-comment"># File lib/rack/auth/digest/nonce.rb, line 44</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">fresh?</span>
<span class="ruby-operator">!</span><span class="ruby-identifier">stale?</span>
<span class="ruby-keyword">end</span></pre>
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<div class="method-source-code" id="stale-3F-source">
<pre>
<span class="ruby-comment"># File lib/rack/auth/digest/nonce.rb, line 40</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">stale?</span>
<span class="ruby-operator">!</span><span class="ruby-keyword">self</span>.<span class="ruby-identifier">class</span>.<span class="ruby-identifier">time_limit</span>.<span class="ruby-identifier">nil?</span> <span class="ruby-operator">&&</span> (<span class="ruby-constant">Time</span>.<span class="ruby-identifier">now</span>.<span class="ruby-identifier">to_i</span> <span class="ruby-operator">-</span> <span class="ruby-ivar">@timestamp</span>) <span class="ruby-operator">></span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier">class</span>.<span class="ruby-identifier">time_limit</span>
<span class="ruby-keyword">end</span></pre>
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<div class="method-description">
<div class="method-source-code" id="to_s-source">
<pre>
<span class="ruby-comment"># File lib/rack/auth/digest/nonce.rb, line 28</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">to_s</span>
[([ <span class="ruby-ivar">@timestamp</span>, <span class="ruby-identifier">digest</span> ] * <span class="ruby-string">' '</span>)].<span class="ruby-identifier">pack</span>(<span class="ruby-string">"m*"</span>).<span class="ruby-identifier">strip</span>
<span class="ruby-keyword">end</span></pre>
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<span class="method-name">valid?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="valid-3F-source">
<pre>
<span class="ruby-comment"># File lib/rack/auth/digest/nonce.rb, line 36</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier">valid?</span>
<span class="ruby-identifier">digest</span> <span class="ruby-operator">==</span> <span class="ruby-ivar">@given_digest</span>
<span class="ruby-keyword">end</span></pre>
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