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来自「Crypto++是一个非常强大的密码学库,主要是功能全」· HTML 代码 · 共 159 行 · 第 1/2 页

<a name="l00074"></a><a class="code" href="class_secret_recovery.html">00074</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="class_secret_recovery.html">SecretRecovery</a> : <span class="keyword">public</span> <a class="code" href="class_raw_i_d_a.html">RawIDA</a>
00075 {
00076 <span class="keyword">public</span>:
00077         <a class="code" href="class_secret_recovery.html">SecretRecovery</a>(<span class="keywordtype">int</span> threshold, <a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL, <span class="keywordtype">bool</span> removePadding=<span class="keyword">true</span>)
00078                 : <a class="code" href="class_raw_i_d_a.html">RawIDA</a>(attachment)
00079                 {<a class="code" href="class_secret_recovery.html#_secret_recoverya1">Initialize</a>(MakeParameters(<span class="stringliteral">"RecoveryThreshold"</span>, threshold)(<span class="stringliteral">"RemovePadding"</span>, removePadding), 0);}
00080 
00081         <span class="keywordtype">void</span> <a class="code" href="class_secret_recovery.html#_secret_recoverya1">Initialize</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters=g_nullNameValuePairs, <span class="keywordtype">int</span> propagation=-1);
00082 
00083 <span class="keyword">protected</span>:
00084         <span class="keywordtype">void</span> FlushOutputQueues();
00085         <span class="keywordtype">void</span> OutputMessageEnds();
00086 
00087         <span class="keywordtype">bool</span> m_pad;
00088 };
00089 <span class="comment"></span>
00090 <span class="comment">/// a variant of Rabin's Information Dispersal Algorithm</span>
<a name="l00091"></a><a class="code" href="class_information_dispersal.html">00091</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="class_information_dispersal.html">InformationDispersal</a> : <span class="keyword">public</span> CustomSignalPropagation&lt;Filter&gt;
00092 {
00093 <span class="keyword">public</span>:
00094         <a class="code" href="class_information_dispersal.html">InformationDispersal</a>(<span class="keywordtype">int</span> threshold, <span class="keywordtype">int</span> nShares, <a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL, <span class="keywordtype">bool</span> addPadding=<span class="keyword">true</span>)
00095                 : CustomSignalPropagation&lt;Filter&gt;(attachment), m_ida(<span class="keyword">new</span> OutputProxy(*<span class="keyword">this</span>, <span class="keyword">true</span>))
00096                 {<a class="code" href="class_information_dispersal.html#_information_dispersala1">Initialize</a>(MakeParameters(<span class="stringliteral">"RecoveryThreshold"</span>, threshold)(<span class="stringliteral">"NumberOfShares"</span>, nShares)(<span class="stringliteral">"AddPadding"</span>, addPadding), 0);}
00097 
00098         <span class="keywordtype">void</span> <a class="code" href="class_information_dispersal.html#_information_dispersala1">Initialize</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters=g_nullNameValuePairs, <span class="keywordtype">int</span> propagation=-1);
00099         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_information_dispersal.html#_information_dispersala2">Put2</a>(<span class="keyword">const</span> byte *begin, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking);
<a name="l00100"></a><a class="code" href="class_information_dispersal.html#_information_dispersala3">00100</a>         <span class="keywordtype">bool</span> <a class="code" href="class_information_dispersal.html#_information_dispersala3">Flush</a>(<span class="keywordtype">bool</span> hardFlush, <span class="keywordtype">int</span> propagation=-1, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>) {<span class="keywordflow">return</span> m_ida.Flush(hardFlush, propagation, blocking);}
00101 
00102 <span class="keyword">protected</span>:
00103         <a class="code" href="class_raw_i_d_a.html">RawIDA</a> m_ida;
00104         <span class="keywordtype">bool</span> m_pad;
00105         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> m_nextChannel;
00106 };
00107 <span class="comment"></span>
00108 <span class="comment">/// a variant of Rabin's Information Dispersal Algorithm</span>
<a name="l00109"></a><a class="code" href="class_information_recovery.html">00109</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="class_information_recovery.html">InformationRecovery</a> : <span class="keyword">public</span> <a class="code" href="class_raw_i_d_a.html">RawIDA</a>
00110 {
00111 <span class="keyword">public</span>:
00112         <a class="code" href="class_information_recovery.html">InformationRecovery</a>(<span class="keywordtype">int</span> threshold, <a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL, <span class="keywordtype">bool</span> removePadding=<span class="keyword">true</span>)
00113                 : <a class="code" href="class_raw_i_d_a.html">RawIDA</a>(attachment)
00114                 {<a class="code" href="class_information_recovery.html#_information_recoverya1">Initialize</a>(MakeParameters(<span class="stringliteral">"RecoveryThreshold"</span>, threshold)(<span class="stringliteral">"RemovePadding"</span>, removePadding), 0);}
00115 
00116         <span class="keywordtype">void</span> <a class="code" href="class_information_recovery.html#_information_recoverya1">Initialize</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters=g_nullNameValuePairs, <span class="keywordtype">int</span> propagation=-1);
00117 
00118 <span class="keyword">protected</span>:
00119         <span class="keywordtype">void</span> FlushOutputQueues();
00120         <span class="keywordtype">void</span> OutputMessageEnds();
00121 
00122         <span class="keywordtype">bool</span> m_pad;
00123         <a class="code" href="class_byte_queue.html">ByteQueue</a> m_queue;
00124 };
00125 
00126 <span class="keyword">class </span>PaddingRemover : <span class="keyword">public</span> Unflushable&lt;Filter&gt;
00127 {
00128 <span class="keyword">public</span>:
00129         PaddingRemover(<a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL)
00130                 : Unflushable&lt;<a class="code" href="class_filter.html">Filter</a>&gt;(attachment), m_possiblePadding(false) {}
00131 
00132         <span class="keywordtype">void</span> IsolatedInitialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters) {m_possiblePadding = <span class="keyword">false</span>;}
00133         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> Put2(<span class="keyword">const</span> byte *begin, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking);
00134 
00135         <span class="comment">// GetPossiblePadding() == false at the end of a message indicates incorrect padding</span>
00136         <span class="keywordtype">bool</span> GetPossiblePadding()<span class="keyword"> const </span>{<span class="keywordflow">return</span> m_possiblePadding;}
00137 
00138 <span class="keyword">private</span>:
00139         <span class="keywordtype">bool</span> m_possiblePadding;
00140         <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> m_zeroCount;
00141 };
00142 
00143 NAMESPACE_END
00144 
00145 <span class="preprocessor">#endif</span>
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