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Crypto++是一个非常强大的密码学库,主要是功能全

00288         m_pad = parameters.<a class="code" href="class_name_value_pairs.html#_x_t_r___d_ha40">GetValueWithDefault</a>(<span class="stringliteral">"RemovePadding"</span>, <span class="keyword">true</span>);
00289         <a class="code" href="class_filter.html#_zlib_decompressora13">RawIDA::Initialize</a>(CombinedNameValuePairs(parameters, MakeParameters(<span class="stringliteral">"OutputChannelID"</span>, (word32)0xffffffff)), propagation);
00290 }
00291 
00292 <span class="keywordtype">void</span> SecretRecovery::FlushOutputQueues()
00293 {
00294         <span class="keywordflow">if</span> (m_pad)
00295                 m_outputQueues[0].TransferTo(*<a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>(), m_outputQueues[0].<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz7_0">MaxRetrievable</a>()-4);
00296         <span class="keywordflow">else</span>
00297                 m_outputQueues[0].TransferTo(*<a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>());
00298 }
00299 
00300 <span class="keywordtype">void</span> SecretRecovery::OutputMessageEnds()
00301 {
00302         <span class="keywordflow">if</span> (m_pad)
00303         {
00304                 PaddingRemover paddingRemover(<span class="keyword">new</span> <a class="code" href="class_redirector.html">Redirector</a>(*<a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()));
00305                 m_outputQueues[0].TransferAllTo(paddingRemover);
00306         }
00307 
00308         <span class="keywordflow">if</span> (GetAutoSignalPropagation() != 0)
00309                 <a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()-&gt;<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz1_7">MessageEnd</a>(GetAutoSignalPropagation()-1);
00310 }
00311 
00312 <span class="comment">// ****************************************************************</span>
00313 
00314 <span class="keywordtype">void</span> <a class="code" href="class_information_dispersal.html#_information_dispersala1">InformationDispersal::Initialize</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters, <span class="keywordtype">int</span> propagation)
00315 {
00316         m_nextChannel = 0;
00317         m_pad = parameters.<a class="code" href="class_name_value_pairs.html#_x_t_r___d_ha40">GetValueWithDefault</a>(<span class="stringliteral">"AddPadding"</span>, <span class="keyword">true</span>);
00318         m_ida.Initialize(parameters, propagation);
00319 }
00320 
00321 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_information_dispersal.html#_information_dispersala2">InformationDispersal::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)
00322 {
00323         <span class="keywordflow">if</span> (!blocking)
00324                 <span class="keywordflow">throw</span> BlockingInputOnly(<span class="stringliteral">"InformationDispersal"</span>);
00325         
00326         <span class="keywordflow">while</span> (length--)
00327         {
00328                 m_ida.<a class="code" href="class_raw_i_d_a.html#_secret_recoverya4">ChannelData</a>(m_nextChannel, begin, 1, <span class="keyword">false</span>);
00329                 begin++;
00330                 m_nextChannel++;
00331                 <span class="keywordflow">if</span> (m_nextChannel == m_ida.<a class="code" href="class_raw_i_d_a.html#_secret_recoverya2">GetThreshold</a>())
00332                         m_nextChannel = 0;
00333         }
00334 
00335         <span class="keywordflow">if</span> (messageEnd)
00336         {
00337                 m_ida.SetAutoSignalPropagation(messageEnd-1);
00338                 <span class="keywordflow">if</span> (m_pad)
00339                         <a class="code" href="class_buffered_transformation.html#_zlib_decompressorz1_0">InformationDispersal::Put</a>(1);
00340                 <span class="keywordflow">for</span> (word32 i=0; i&lt;m_ida.<a class="code" href="class_raw_i_d_a.html#_secret_recoverya2">GetThreshold</a>(); i++)
00341                         m_ida.<a class="code" href="class_raw_i_d_a.html#_secret_recoverya4">ChannelData</a>(i, NULL, 0, <span class="keyword">true</span>);
00342         }
00343 
00344         <span class="keywordflow">return</span> 0;
00345 }
00346 
00347 <span class="keywordtype">void</span> <a class="code" href="class_information_recovery.html#_information_recoverya1">InformationRecovery::Initialize</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters, <span class="keywordtype">int</span> propagation)
00348 {
00349         m_pad = parameters.<a class="code" href="class_name_value_pairs.html#_x_t_r___d_ha40">GetValueWithDefault</a>(<span class="stringliteral">"RemovePadding"</span>, <span class="keyword">true</span>);
00350         <a class="code" href="class_filter.html#_zlib_decompressora13">RawIDA::Initialize</a>(parameters, propagation);
00351 }
00352 
00353 <span class="keywordtype">void</span> InformationRecovery::FlushOutputQueues()
00354 {
00355         <span class="keywordflow">while</span> (m_outputQueues[0].AnyRetrievable())
00356         {
00357                 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i&lt;m_outputChannelIds.size(); i++)
00358                         m_outputQueues[i].TransferTo(m_queue, 1);
00359         }
00360 
00361         <span class="keywordflow">if</span> (m_pad)
00362                 m_queue.<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz7_10">TransferTo</a>(*<a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>(), m_queue.<a class="code" href="class_byte_queue.html#_d_e_r_set_encodera3">MaxRetrievable</a>()-4*m_threshold);
00363         <span class="keywordflow">else</span>
00364                 m_queue.<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz7_10">TransferTo</a>(*<a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>());
00365 }
00366 
00367 <span class="keywordtype">void</span> InformationRecovery::OutputMessageEnds()
00368 {
00369         <span class="keywordflow">if</span> (m_pad)
00370         {
00371                 PaddingRemover paddingRemover(<span class="keyword">new</span> <a class="code" href="class_redirector.html">Redirector</a>(*<a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()));
00372                 m_queue.<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz9_8">TransferAllTo</a>(paddingRemover);
00373         }
00374 
00375         <span class="keywordflow">if</span> (GetAutoSignalPropagation() != 0)
00376                 <a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()-&gt;<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz1_7">MessageEnd</a>(GetAutoSignalPropagation()-1);
00377 }
00378 
00379 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> PaddingRemover::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)
00380 {
00381         <span class="keywordflow">if</span> (!blocking)
00382                 <span class="keywordflow">throw</span> BlockingInputOnly(<span class="stringliteral">"PaddingRemover"</span>);
00383 
00384         <span class="keyword">const</span> byte *<span class="keyword">const</span> end = begin + length;
00385 
00386         <span class="keywordflow">if</span> (m_possiblePadding)
00387         {
00388                 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> len = find_if(begin, end, bind2nd(not_equal_to&lt;byte&gt;(), 0)) - begin;
00389                 m_zeroCount += len;
00390                 begin += len;
00391                 <span class="keywordflow">if</span> (begin == end)
00392                         <span class="keywordflow">return</span> 0;
00393 
00394                 <a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()-&gt;<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz1_0">Put</a>(1);
00395                 <span class="keywordflow">while</span> (m_zeroCount--)
00396                         <a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()-&gt;<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz1_0">Put</a>(0);
00397                 <a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()-&gt;<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz1_0">Put</a>(*begin++);
00398                 m_possiblePadding = <span class="keyword">false</span>;
00399         }
00400 
00401 <span class="preprocessor">#if defined(_MSC_VER) &amp;&amp; !defined(__MWERKS__)</span>
00402 <span class="preprocessor"></span>        <span class="comment">// VC60 workaround: built-in reverse_iterator has two template parameters, Dinkumware only has one</span>
00403         <span class="keyword">typedef</span> reverse_bidirectional_iterator&lt;const byte *, const byte&gt; rit;
00404 <span class="preprocessor">#else</span>
00405 <span class="preprocessor"></span>        <span class="keyword">typedef</span> reverse_iterator&lt;const byte *&gt; rit;
00406 <span class="preprocessor">#endif</span>
00407 <span class="preprocessor"></span>        <span class="keyword">const</span> byte *x = find_if(rit(end), rit(begin), bind2nd(not_equal_to&lt;byte&gt;(), 0)).base();
00408         <span class="keywordflow">if</span> (x != begin &amp;&amp; *(x-1) == 1)
00409         {
00410                 <a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()-&gt;<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz1_0">Put</a>(begin, x-begin-1);
00411                 m_possiblePadding = <span class="keyword">true</span>;
00412                 m_zeroCount = end - x;
00413         }
00414         <span class="keywordflow">else</span>
00415                 <a class="code" href="class_filter.html#_zlib_decompressora8">AttachedTransformation</a>()-&gt;<a class="code" href="class_buffered_transformation.html#_zlib_decompressorz1_0">Put</a>(begin, end-begin);
00416 
00417         <span class="keywordflow">if</span> (messageEnd)
00418         {
00419                 m_possiblePadding = <span class="keyword">false</span>;
00420                 Output(0, begin, length, messageEnd, blocking);
00421         }
00422         <span class="keywordflow">return</span> 0;
00423 }
00424 
00425 NAMESPACE_END
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