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<title>use_nonce (OpenID::Store::Memcache)</title>
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<pre><span class="ruby-comment cmt"># File lib/openid/store/memcache.rb, line 61</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">use_nonce</span>(<span class="ruby-identifier">server_url</span>, <span class="ruby-identifier">timestamp</span>, <span class="ruby-identifier">salt</span>)
<span class="ruby-keyword kw">return</span> <span class="ruby-keyword kw">false</span> <span class="ruby-keyword kw">if</span> (<span class="ruby-identifier">timestamp</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-identifier">abs</span> <span class="ruby-operator">></span> <span class="ruby-constant">Nonce</span>.<span class="ruby-identifier">skew</span>
<span class="ruby-identifier">ts</span> = <span class="ruby-identifier">timestamp</span>.<span class="ruby-identifier">to_s</span> <span class="ruby-comment cmt"># base 10 seconds since epoch</span>
<span class="ruby-identifier">nonce_key</span> = <span class="ruby-identifier">key_prefix</span> <span class="ruby-operator">+</span> <span class="ruby-value str">'N'</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">server_url</span> <span class="ruby-operator">+</span> <span class="ruby-value str">'|'</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">ts</span> <span class="ruby-operator">+</span> <span class="ruby-value str">'|'</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">salt</span>
<span class="ruby-identifier">result</span> = <span class="ruby-ivar">@cache_client</span>.<span class="ruby-identifier">add</span>(<span class="ruby-identifier">nonce_key</span>, <span class="ruby-value str">''</span>, <span class="ruby-identifier">expiry</span>(<span class="ruby-constant">Nonce</span>.<span class="ruby-identifier">skew</span> <span class="ruby-operator">+</span> <span class="ruby-value">5</span>))
<span class="ruby-keyword kw">return</span> <span class="ruby-operator">!</span><span class="ruby-operator">!</span>(<span class="ruby-identifier">result</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">/^STORED/</span>)
<span class="ruby-keyword kw">end</span></pre>
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