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cryptopp-doc-5.6.1-0.1.svn479.fc13.i686.rpm

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<h1>simple.h</h1><a href="simple_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// simple.h - written and placed in the public domain by Wei Dai</span><span class="comment"></span>
<a name="l00002"></a>00002 <span class="comment">/*! \file</span>
<a name="l00003"></a>00003 <span class="comment">        Simple non-interface classes derived from classes in cryptlib.h.</span>
<a name="l00004"></a>00004 <span class="comment">*/</span>
<a name="l00005"></a>00005 
<a name="l00006"></a>00006 <span class="preprocessor">#ifndef CRYPTOPP_SIMPLE_H</span>
<a name="l00007"></a>00007 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_SIMPLE_H</span>
<a name="l00008"></a>00008 <span class="preprocessor"></span>
<a name="l00009"></a>00009 <span class="preprocessor">#include &quot;<a class="code" href="cryptlib_8h.html">cryptlib.h</a>&quot;</span>
<a name="l00010"></a>00010 <span class="preprocessor">#include &quot;misc.h&quot;</span>
<a name="l00011"></a>00011 
<a name="l00012"></a>00012 NAMESPACE_BEGIN(CryptoPP)
<a name="l00013"></a>00013 
<a name="l00014"></a>00014 <span class="comment">//! _</span>
<a name="l00015"></a>00015 <span class="comment"></span>template &lt;class DERIVED, class <a class="code" href="class_b_a_s_e.html">BASE</a>&gt;
<a name="l00016"></a><a class="code" href="class_clonable_impl.html">00016</a> class CRYPTOPP_NO_VTABLE <a class="code" href="class_clonable_impl.html" title="_">ClonableImpl</a> : public <a class="code" href="class_b_a_s_e.html">BASE</a>
<a name="l00017"></a>00017 {
<a name="l00018"></a>00018 <span class="keyword">public</span>:
<a name="l00019"></a>00019         <a class="code" href="class_clonable.html" title="interface for cloning objects, this is not implemented by most classes yet">Clonable</a> * Clone()<span class="keyword"> const </span>{<span class="keywordflow">return</span> <span class="keyword">new</span> DERIVED(*static_cast&lt;const DERIVED *&gt;(<span class="keyword">this</span>));}
<a name="l00020"></a>00020 };
<a name="l00021"></a>00021 <span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment">//! _</span>
<a name="l00023"></a>00023 <span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> BASE, <span class="keyword">class</span> ALGORITHM_INFO=BASE&gt;
<a name="l00024"></a><a class="code" href="class_algorithm_impl.html">00024</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_algorithm_impl.html" title="_">AlgorithmImpl</a> : <span class="keyword">public</span> <a class="code" href="class_b_a_s_e.html">BASE</a>
<a name="l00025"></a>00025 {
<a name="l00026"></a>00026 <span class="keyword">public</span>:
<a name="l00027"></a>00027         <span class="keyword">static</span> std::string CRYPTOPP_API StaticAlgorithmName() {<span class="keywordflow">return</span> ALGORITHM_INFO::StaticAlgorithmName();}
<a name="l00028"></a>00028         std::string AlgorithmName()<span class="keyword"> const </span>{<span class="keywordflow">return</span> ALGORITHM_INFO::StaticAlgorithmName();}
<a name="l00029"></a>00029 };
<a name="l00030"></a>00030 <span class="comment"></span>
<a name="l00031"></a>00031 <span class="comment">//! _</span>
<a name="l00032"></a><a class="code" href="class_invalid_key_length.html">00032</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL <a class="code" href="class_invalid_key_length.html" title="_">InvalidKeyLength</a> : <span class="keyword">public</span> <a class="code" href="class_invalid_argument.html" title="exception thrown when an invalid argument is detected">InvalidArgument</a>
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034 <span class="keyword">public</span>:
<a name="l00035"></a>00035         <span class="keyword">explicit</span> <a class="code" href="class_invalid_key_length.html" title="_">InvalidKeyLength</a>(<span class="keyword">const</span> std::string &amp;algorithm, <span class="keywordtype">size_t</span> length) : <a class="code" href="class_invalid_argument.html" title="exception thrown when an invalid argument is detected">InvalidArgument</a>(algorithm + <span class="stringliteral">&quot;: &quot;</span> + IntToString(length) + <span class="stringliteral">&quot; is not a valid key length&quot;</span>) {}
<a name="l00036"></a>00036 };
<a name="l00037"></a>00037 <span class="comment"></span>
<a name="l00038"></a>00038 <span class="comment">//! _</span>
<a name="l00039"></a><a class="code" href="class_invalid_rounds.html">00039</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL <a class="code" href="class_invalid_rounds.html" title="_">InvalidRounds</a> : <span class="keyword">public</span> <a class="code" href="class_invalid_argument.html" title="exception thrown when an invalid argument is detected">InvalidArgument</a>
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041 <span class="keyword">public</span>:
<a name="l00042"></a>00042         <span class="keyword">explicit</span> <a class="code" href="class_invalid_rounds.html" title="_">InvalidRounds</a>(<span class="keyword">const</span> std::string &amp;algorithm, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rounds) : <a class="code" href="class_invalid_argument.html" title="exception thrown when an invalid argument is detected">InvalidArgument</a>(algorithm + <span class="stringliteral">&quot;: &quot;</span> + IntToString(rounds) + <span class="stringliteral">&quot; is not a valid number of rounds&quot;</span>) {}
<a name="l00043"></a>00043 };
<a name="l00044"></a>00044 
<a name="l00045"></a>00045 <span class="comment">// *****************************</span>
<a name="l00046"></a>00046 <span class="comment"></span>
<a name="l00047"></a>00047 <span class="comment">//! _</span>
<a name="l00048"></a>00048 <span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00049"></a><a class="code" href="class_bufferless.html">00049</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_bufferless.html" title="_">Bufferless</a> : <span class="keyword">public</span> T
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051 <span class="keyword">public</span>:
<a name="l00052"></a>00052         <span class="keywordtype">bool</span> IsolatedFlush(<span class="keywordtype">bool</span> hardFlush, <span class="keywordtype">bool</span> blocking) {<span class="keywordflow">return</span> <span class="keyword">false</span>;}
<a name="l00053"></a>00053 };
<a name="l00054"></a>00054 <span class="comment"></span>
<a name="l00055"></a>00055 <span class="comment">//! _</span>
<a name="l00056"></a>00056 <span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00057"></a><a class="code" href="class_unflushable.html">00057</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_unflushable.html" title="_">Unflushable</a> : <span class="keyword">public</span> T
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059 <span class="keyword">public</span>:
<a name="l00060"></a>00060         <span class="keywordtype">bool</span> Flush(<span class="keywordtype">bool</span> completeFlush, <span class="keywordtype">int</span> propagation=-1, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>)
<a name="l00061"></a>00061                 {<span class="keywordflow">return</span> ChannelFlush(DEFAULT_CHANNEL, completeFlush, propagation, blocking);}
<a name="l00062"></a>00062         <span class="keywordtype">bool</span> IsolatedFlush(<span class="keywordtype">bool</span> hardFlush, <span class="keywordtype">bool</span> blocking)
<a name="l00063"></a>00063                 {assert(<span class="keyword">false</span>); <span class="keywordflow">return</span> <span class="keyword">false</span>;}
<a name="l00064"></a>00064         <span class="keywordtype">bool</span> ChannelFlush(<span class="keyword">const</span> std::string &amp;channel, <span class="keywordtype">bool</span> hardFlush, <span class="keywordtype">int</span> propagation=-1, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>)
<a name="l00065"></a>00065         {
<a name="l00066"></a>00066                 <span class="keywordflow">if</span> (hardFlush &amp;&amp; !InputBufferIsEmpty())
<a name="l00067"></a>00067                         <span class="keywordflow">throw</span> <a class="code" href="class_cannot_flush.html" title="exception thrown by a class when Flush(true) is called but it can&amp;#39;t completely...">CannotFlush</a>(<span class="stringliteral">&quot;Unflushable&lt;T&gt;: this object has buffered input that cannot be flushed&quot;</span>);
<a name="l00068"></a>00068                 <span class="keywordflow">else</span> 
<a name="l00069"></a>00069                 {
<a name="l00070"></a>00070                         <a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a> *attached = this-&gt;AttachedTransformation();
<a name="l00071"></a>00071                         <span class="keywordflow">return</span> attached &amp;&amp; propagation ? attached-&gt;ChannelFlush(channel, hardFlush, propagation-1, blocking) : <span class="keyword">false</span>;
<a name="l00072"></a>00072                 }
<a name="l00073"></a>00073         }
<a name="l00074"></a>00074 
<a name="l00075"></a>00075 <span class="keyword">protected</span>:
<a name="l00076"></a>00076         <span class="keyword">virtual</span> <span class="keywordtype">bool</span> InputBufferIsEmpty()<span class="keyword"> const </span>{<span class="keywordflow">return</span> <span class="keyword">false</span>;}
<a name="l00077"></a>00077 };
<a name="l00078"></a>00078 <span class="comment"></span>
<a name="l00079"></a>00079 <span class="comment">//! _</span>
<a name="l00080"></a>00080 <span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00081"></a><a class="code" href="class_input_rejecting.html">00081</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_input_rejecting.html" title="_">InputRejecting</a> : <span class="keyword">public</span> T
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="keyword">public</span>:
<a name="l00084"></a><a class="code" href="struct_input_rejecting_1_1_input_rejected.html">00084</a>         <span class="keyword">struct </span><a class="code" href="struct_input_rejecting_1_1_input_rejected.html">InputRejected</a> : <span class="keyword">public</span> <a class="code" href="class_not_implemented.html" title="exception thrown by a class if a non-implemented method is called">NotImplemented</a>
<a name="l00085"></a>00085                 {<a class="code" href="struct_input_rejecting_1_1_input_rejected.html">InputRejected</a>() : <a class="code" href="class_not_implemented.html" title="exception thrown by a class if a non-implemented method is called">NotImplemented</a>(<span class="stringliteral">&quot;BufferedTransformation: this object doesn&apos;t allow input&quot;</span>) {}};
<a name="l00086"></a>00086 
<a name="l00087"></a>00087         <span class="comment">// shouldn&apos;t be calling these functions on this class</span>
<a name="l00088"></a>00088         <span class="keywordtype">size_t</span> Put2(<span class="keyword">const</span> byte *begin, <span class="keywordtype">size_t</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking)
<a name="l00089"></a>00089                 {<span class="keywordflow">throw</span> <a class="code" href="struct_input_rejecting_1_1_input_rejected.html">InputRejected</a>();}
<a name="l00090"></a>00090         <span class="keywordtype">bool</span> IsolatedFlush(<span class="keywordtype">bool</span>, <span class="keywordtype">bool</span>) {<span class="keywordflow">return</span> <span class="keyword">false</span>;}
<a name="l00091"></a>00091         <span class="keywordtype">bool</span> IsolatedMessageSeriesEnd(<span class="keywordtype">bool</span>) {<span class="keywordflow">throw</span> InputRejected();}
<a name="l00092"></a>00092 
<a name="l00093"></a>00093         <span class="keywordtype">size_t</span> ChannelPut2(<span class="keyword">const</span> std::string &amp;channel, <span class="keyword">const</span> byte *begin, <span class="keywordtype">size_t</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking)
<a name="l00094"></a>00094                 {<span class="keywordflow">throw</span> InputRejected();}
<a name="l00095"></a>00095         <span class="keywordtype">bool</span> ChannelMessageSeriesEnd(<span class="keyword">const</span> std::string &amp;, <span class="keywordtype">int</span>, <span class="keywordtype">bool</span>) {<span class="keywordflow">throw</span> InputRejected();}
<a name="l00096"></a>00096 };
<a name="l00097"></a>00097 <span class="comment"></span>
<a name="l00098"></a>00098 <span class="comment">//! _</span>
<a name="l00099"></a>00099 <span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00100"></a><a class="code" href="class_custom_flush_propagation.html">00100</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_custom_flush_propagation.html" title="_">CustomFlushPropagation</a> : <span class="keyword">public</span> T
<a name="l00101"></a>00101 {
<a name="l00102"></a>00102 <span class="keyword">public</span>:
<a name="l00103"></a>00103         <span class="keyword">virtual</span> <span class="keywordtype">bool</span> Flush(<span class="keywordtype">bool</span> hardFlush, <span class="keywordtype">int</span> propagation=-1, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>) =0;
<a name="l00104"></a>00104 
<a name="l00105"></a>00105 <span class="keyword">private</span>:
<a name="l00106"></a>00106         <span class="keywordtype">bool</span> IsolatedFlush(<span class="keywordtype">bool</span> hardFlush, <span class="keywordtype">bool</span> blocking) {assert(<span class="keyword">false</span>); <span class="keywordflow">return</span> <span class="keyword">false</span>;}
<a name="l00107"></a>00107 };
<a name="l00108"></a>00108 <span class="comment"></span>
<a name="l00109"></a>00109 <span class="comment">//! _</span>
<a name="l00110"></a>00110 <span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00111"></a><a class="code" href="class_custom_signal_propagation.html">00111</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_custom_signal_propagation.html" title="_">CustomSignalPropagation</a> : <span class="keyword">public</span> <a class="code" href="class_custom_flush_propagation.html" title="_">CustomFlushPropagation</a>&lt;T&gt;
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 <span class="keyword">public</span>:
<a name="l00114"></a>00114         <span class="keyword">virtual</span> <span class="keywordtype">void</span> Initialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &amp;parameters=g_nullNameValuePairs, <span class="keywordtype">int</span> propagation=-1) =0;
<a name="l00115"></a>00115 
<a name="l00116"></a>00116 <span class="keyword">private</span>:
<a name="l00117"></a>00117         <span class="keywordtype">void</span> IsolatedInitialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &amp;parameters) {assert(<span class="keyword">false</span>);}
<a name="l00118"></a>00118 };
<a name="l00119"></a>00119 <span class="comment"></span>
<a name="l00120"></a>00120 <span class="comment">//! _</span>
<a name="l00121"></a>00121 <span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00122"></a><a class="code" href="class_multichannel.html">00122</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_multichannel.html" title="_">Multichannel</a> : <span class="keyword">public</span> <a class="code" href="class_custom_flush_propagation.html" title="_">CustomFlushPropagation</a>&lt;T&gt;
<a name="l00123"></a>00123 {
<a name="l00124"></a>00124 <span class="keyword">public</span>:
<a name="l00125"></a>00125         <span class="keywordtype">bool</span> Flush(<span class="keywordtype">bool</span> hardFlush, <span class="keywordtype">int</span> propagation=-1, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>)
<a name="l00126"></a>00126                 {<span class="keywordflow">return</span> this-&gt;ChannelFlush(DEFAULT_CHANNEL, hardFlush, propagation, blocking);}
<a name="l00127"></a>00127         <span class="keywordtype">bool</span> MessageSeriesEnd(<span class="keywordtype">int</span> propagation=-1, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>)
<a name="l00128"></a>00128                 {<span class="keywordflow">return</span> this-&gt;ChannelMessageSeriesEnd(DEFAULT_CHANNEL, propagation, blocking);}
<a name="l00129"></a>00129         byte * CreatePutSpace(<span class="keywordtype">size_t</span> &amp;size)
<a name="l00130"></a>00130                 {<span class="keywordflow">return</span> this-&gt;ChannelCreatePutSpace(DEFAULT_CHANNEL, size);}
<a name="l00131"></a>00131         <span class="keywordtype">size_t</span> Put2(<span class="keyword">const</span> byte *begin, <span class="keywordtype">size_t</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking)
<a name="l00132"></a>00132                 {<span class="keywordflow">return</span> this-&gt;ChannelPut2(DEFAULT_CHANNEL, begin, length, messageEnd, blocking);}
<a name="l00133"></a>00133         <span class="keywordtype">size_t</span> PutModifiable2(byte *inString, <span class="keywordtype">size_t</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking)
<a name="l00134"></a>00134                 {<span class="keywordflow">return</span> this-&gt;ChannelPutModifiable2(DEFAULT_CHANNEL, inString, length, messageEnd, blocking);}
<a name="l00135"></a>00135 
<a name="l00136"></a>00136 <span class="comment">//      void ChannelMessageSeriesEnd(const std::string &amp;channel, int propagation=-1)</span>
<a name="l00137"></a>00137 <span class="comment">//              {PropagateMessageSeriesEnd(propagation, channel);}</span>
<a name="l00138"></a>00138         byte * ChannelCreatePutSpace(<span class="keyword">const</span> std::string &amp;channel, <span class="keywordtype">size_t</span> &amp;size)
<a name="l00139"></a>00139                 {size = 0; <span class="keywordflow">return</span> NULL;}
<a name="l00140"></a>00140         <span class="keywordtype">bool</span> ChannelPutModifiable(<span class="keyword">const</span> std::string &amp;channel, byte *inString, <span class="keywordtype">size_t</span> length)
<a name="l00141"></a>00141                 {this-&gt;ChannelPut(channel, inString, length); <span class="keywordflow">return</span> <span class="keyword">false</span>;}
<a name="l00142"></a>00142 
<a name="l00143"></a>00143         <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> ChannelPut2(<span class="keyword">const</span> std::string &amp;channel, <span class="keyword">const</span> byte *begin, <span class="keywordtype">size_t</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking) =0;
<a name="l00144"></a>00144         <span class="keywordtype">size_t</span> ChannelPutModifiable2(<span class="keyword">const</span> std::string &amp;channel, byte *begin, <span class="keywordtype">size_t</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking)
<a name="l00145"></a>00145                 {<span class="keywordflow">return</span> ChannelPut2(channel, begin, length, messageEnd, blocking);}
<a name="l00146"></a>00146 
<a name="l00147"></a>00147         <span class="keyword">virtual</span> <span class="keywordtype">bool</span> ChannelFlush(<span class="keyword">const</span> std::string &amp;channel, <span class="keywordtype">bool</span> hardFlush, <span class="keywordtype">int</span> propagation=-1, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>) =0;
<a name="l00148"></a>00148 };
<a name="l00149"></a>00149 <span class="comment"></span>
<a name="l00150"></a>00150 <span class="comment">//! _</span>
<a name="l00151"></a>00151 <span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00152"></a><a class="code" href="class_auto_signaling.html">00152</a> <span class="keyword">class </span>CRYPTOPP_NO_VTABLE <a class="code" href="class_auto_signaling.html" title="_">AutoSignaling</a> : <span class="keyword">public</span> T
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154 <span class="keyword">public</span>:
<a name="l00155"></a>00155         <a class="code" href="class_auto_signaling.html" title="_">AutoSignaling</a>(<span class="keywordtype">int</span> propagation=-1) : m_autoSignalPropagation(propagation) {}
<a name="l00156"></a>00156 
<a name="l00157"></a>00157         <span class="keywordtype">void</span> SetAutoSignalPropagation(<span class="keywordtype">int</span> propagation)
<a name="l00158"></a>00158                 {m_autoSignalPropagation = propagation;}
<a name="l00159"></a>00159         <span class="keywordtype">int</span> GetAutoSignalPropagation()<span class="keyword"> const</span>
<a name="l00160"></a>00160 <span class="keyword">                </span>{<span class="keywordflow">return</span> m_autoSignalPropagation;}
<a name="l00161"></a>00161 
<a name="l00162"></a>00162 <span class="keyword">private</span>:
<a name="l00163"></a>00163         <span class="keywordtype">int</span> m_autoSignalPropagation;
<a name="l00164"></a>00164 };
<a name="l00165"></a>00165 <span class="comment"></span>
<a name="l00166"></a>00166 <span class="comment">//! A BufferedTransformation that only contains pre-existing data as &quot;output&quot;</span>
<a name="l00167"></a><a class="code" href="class_store.html">00167</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL CRYPTOPP_NO_VTABLE <a class="code" href="class_store.html" title="A BufferedTransformation that only contains pre-existing data as &amp;quot;output&amp;quot;...">Store</a> : <span class="keyword">public</span> <a class="code" href="class_auto_signaling.html" title="_">AutoSignaling</a>&lt;InputRejecting&lt;BufferedTransformation&gt; &gt;
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169 <span class="keyword">public</span>:
<a name="l00170"></a>00170         <a class="code" href="class_store.html" title="A BufferedTransformation that only contains pre-existing data as &amp;quot;output&amp;quot;...">Store</a>() : m_messageEnd(<span class="keyword">false</span>) {}
<a name="l00171"></a>00171 
<a name="l00172"></a>00172         <span class="keywordtype">void</span> IsolatedInitialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &amp;parameters)
<a name="l00173"></a>00173         {
<a name="l00174"></a>00174                 m_messageEnd = <span class="keyword">false</span>;
<a name="l00175"></a>00175                 StoreInitialize(parameters);
<a name="l00176"></a>00176         }
<a name="l00177"></a>00177 
<a name="l00178"></a><a class="code" href="class_store.html#a3a1b903a552e02b2582c08ad8e6ee693">00178</a>         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="class_store.html#a3a1b903a552e02b2582c08ad8e6ee693" title="number of times MessageEnd() has been received minus messages retrieved or skipped...">NumberOfMessages</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> m_messageEnd ? 0 : 1;}
<a name="l00179"></a>00179         <span class="keywordtype">bool</span> GetNextMessage();
<a name="l00180"></a>00180         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> CopyMessagesTo(<a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a> &amp;target, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> count=UINT_MAX, <span class="keyword">const</span> std::string &amp;channel=DEFAULT_CHANNEL) <span class="keyword">const</span>;
<a name="l00181"></a>00181 
<a name="l00182"></a>00182 <span class="keyword">protected</span>:
<a name="l00183"></a>00183         <span class="keyword">virtual</span> <span class="keywordtype">void</span> StoreInitialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &amp;parameters) =0;
<a name="l00184"></a>00184 
<a name="l00185"></a>00185         <span class="keywordtype">bool</span> m_messageEnd;
<a name="l00186"></a>00186 };
<a name="l00187"></a>00187 <span class="comment"></span>
<a name="l00188"></a>00188 <span class="comment">//! A BufferedTransformation that doesn&apos;t produce any retrievable output</span>
<a name="l00189"></a><a class="code" href="class_sink.html">00189</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL CRYPTOPP_NO_VTABLE <a class="code" href="class_sink.html" title="A BufferedTransformation that doesn&amp;#39;t produce any retrievable output.">Sink</a> : <span class="keyword">public</span> <a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a>
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191 <span class="keyword">public</span>:
<a name="l00192"></a>00192         <span class="keywordtype">size_t</span> <a class="code" href="class_buffered_transformation.html#a27ac15af3ef43c5ad1e9db5812025fcd" title="upon return, byteCount contains number of bytes that have finished being transfered...">TransferTo2</a>(<a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a> &amp;target, lword &amp;transferBytes, <span class="keyword">const</span> std::string &amp;channel=DEFAULT_CHANNEL, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>)
<a name="l00193"></a>00193                 {transferBytes = 0; <span class="keywordflow">return</span> 0;}
<a name="l00194"></a>00194         <span class="keywordtype">size_t</span> <a class="code" href="class_buffered_transformation.html#a7f90ef36f633c97c1ae519b800527d8e" title="upon return, begin contains the start position of data yet to be finished copying...">CopyRangeTo2</a>(<a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a> &amp;target, lword &amp;begin, lword end=LWORD_MAX, <span class="keyword">const</span> std::string &amp;channel=DEFAULT_CHANNEL, <span class="keywordtype">bool</span> blocking=<span class="keyword">true</span>)<span class="keyword"> const</span>
<a name="l00195"></a>00195 <span class="keyword">                </span>{<span class="keywordflow">return</span> 0;}
<a name="l00196"></a>00196 };
<a name="l00197"></a>00197 
<a name="l00198"></a><a class="code" href="class_bit_bucket.html">00198</a> <span class="keyword">class </span>CRYPTOPP_DLL <a class="code" href="class_bit_bucket.html">BitBucket</a> : <span class="keyword">public</span> <a class="code" href="class_bufferless.html" title="_">Bufferless</a>&lt;Sink&gt;
<a name="l00199"></a>00199 {
<a name="l00200"></a>00200 <span class="keyword">public</span>:
<a name="l00201"></a><a class="code" href="class_bit_bucket.html#aabe913bbc5c44567163211418bc43333">00201</a>         std::string <a class="code" href="class_bit_bucket.html#aabe913bbc5c44567163211418bc43333" title="returns name of this algorithm, not universally implemented yet">AlgorithmName</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> <span class="stringliteral">&quot;BitBucket&quot;</span>;}
<a name="l00202"></a>00202         <span class="keywordtype">void</span> IsolatedInitialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &amp;parameters) {}
<a name="l00203"></a><a class="code" href="class_bit_bucket.html#a943abc22eb4b838010fd58e50fab425a">00203</a>         <span class="keywordtype">size_t</span> Put2(<span class="keyword">const</span> byte *begin, <span class="keywordtype">size_t</span> length, <span class="keywordtype">int</span> messageEnd, <span class="keywordtype">bool</span> blocking)
<a name="l00204"></a>00204                 {<span class="keywordflow">return</span> 0;}
<a name="l00205"></a>00205 };
<a name="l00206"></a>00206 
<a name="l00207"></a>00207 NAMESPACE_END
<a name="l00208"></a>00208 
<a name="l00209"></a>00209 <span class="preprocessor">#endif</span>
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