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libcryptopp-doc-5.2.1-2mdk.i586.rpm

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<h1>basecode.h</h1><pre class="fragment"><div>00001 <span class="preprocessor">#ifndef CRYPTOPP_BASECODE_H</span>
00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_BASECODE_H</span>
00003 <span class="preprocessor"></span>
00004 <span class="preprocessor">#include "filters.h"</span>
00005 <span class="preprocessor">#include "algparam.h"</span>
00006 <span class="preprocessor">#include "argnames.h"</span>
00007 
00008 NAMESPACE_BEGIN(CryptoPP)
00009 
00010 <span class="comment">//! base n encoder, where n is a power of 2</span>
<a name="l00011"></a><a class="code" href="class_base_n___encoder.html">00011</a> <span class="comment"></span>class CRYPTOPP_DLL <a class="code" href="class_base_n___encoder.html">BaseN_Encoder</a> : public <a class="code" href="class_unflushable.html">Unflushable</a>&lt;<a class="code" href="class_filter.html">Filter</a>&gt;
00012 {
00013 <span class="keyword">public</span>:
00014         <a class="code" href="class_base_n___encoder.html">BaseN_Encoder</a>(<a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL)
00015                 {Detach(attachment);}
00016 
00017         <a class="code" href="class_base_n___encoder.html">BaseN_Encoder</a>(<span class="keyword">const</span> byte *alphabet, <span class="keywordtype">int</span> log2base, <a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL, <span class="keywordtype">int</span> padding=-1)
00018         {
00019                 Detach(attachment);
00020                 IsolatedInitialize(MakeParameters(Name::EncodingLookupArray(), alphabet)
00021                         (Name::Log2Base(), log2base)
00022                         (Name::Pad(), padding != -1)
00023                         (Name::PaddingByte(), byte(padding)));
00024         }
00025 
00026         <span class="keywordtype">void</span> IsolatedInitialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters);
00027         <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);
00028 
00029 <span class="keyword">private</span>:
00030         <span class="keyword">const</span> byte *m_alphabet;
00031         <span class="keywordtype">int</span> m_padding, m_bitsPerChar, m_outputBlockSize;
00032         <span class="keywordtype">int</span> m_bytePos, m_bitPos;
00033         <a class="code" href="class_sec_block.html">SecByteBlock</a> m_outBuf;
00034 };
00035 <span class="comment"></span>
00036 <span class="comment">//! base n decoder, where n is a power of 2</span>
<a name="l00037"></a><a class="code" href="class_base_n___decoder.html">00037</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL BaseN_Decoder : <span class="keyword">public</span> <a class="code" href="class_unflushable.html">Unflushable</a>&lt;Filter&gt;
00038 {
00039 <span class="keyword">public</span>:
00040         BaseN_Decoder(<a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL)
00041                 {Detach(attachment);}
00042 
00043         BaseN_Decoder(<span class="keyword">const</span> <span class="keywordtype">int</span> *lookup, <span class="keywordtype">int</span> log2base, <a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL)
00044         {
00045                 Detach(attachment);
00046                 IsolatedInitialize(MakeParameters(Name::DecodingLookupArray(), lookup)(Name::Log2Base(), log2base));
00047         }
00048 
00049         <span class="keywordtype">void</span> IsolatedInitialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters);
00050         <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);
00051 
00052         <span class="keyword">static</span> <span class="keywordtype">void</span> InitializeDecodingLookupArray(<span class="keywordtype">int</span> *lookup, <span class="keyword">const</span> byte *alphabet, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> base, <span class="keywordtype">bool</span> caseInsensitive);
00053 
00054 <span class="keyword">private</span>:
00055         <span class="keyword">const</span> <span class="keywordtype">int</span> *m_lookup;
00056         <span class="keywordtype">int</span> m_padding, m_bitsPerChar, m_outputBlockSize;
00057         <span class="keywordtype">int</span> m_bytePos, m_bitPos;
00058         <a class="code" href="class_sec_block.html">SecByteBlock</a> m_outBuf;
00059 };
00060 <span class="comment"></span>
00061 <span class="comment">//! filter that breaks input stream into groups of fixed size</span>
<a name="l00062"></a><a class="code" href="class_grouper.html">00062</a> <span class="comment"></span><span class="keyword">class </span>CRYPTOPP_DLL Grouper : <span class="keyword">public</span> <a class="code" href="class_bufferless.html">Bufferless</a>&lt;Filter&gt;
00063 {
00064 <span class="keyword">public</span>:
00065         Grouper(<a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL)
00066                 {Detach(attachment);}
00067 
00068         Grouper(<span class="keywordtype">int</span> groupSize, <span class="keyword">const</span> std::string &amp;separator, <span class="keyword">const</span> std::string &amp;terminator, <a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL)
00069         {
00070                 Detach(attachment);
00071                 IsolatedInitialize(MakeParameters(Name::GroupSize(), groupSize)
00072                         (Name::Separator(), <a class="code" href="class_const_byte_array_parameter.html">ConstByteArrayParameter</a>(separator))
00073                         (Name::Terminator(), <a class="code" href="class_const_byte_array_parameter.html">ConstByteArrayParameter</a>(terminator)));
00074         }
00075 
00076         <span class="keywordtype">void</span> IsolatedInitialize(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;parameters);
00077         <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);
00078 
00079 <span class="keyword">private</span>:
00080         <a class="code" href="class_sec_block.html">SecByteBlock</a> m_separator, m_terminator;
00081         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> m_groupSize, m_counter;
00082 };
00083 
00084 NAMESPACE_END
00085 
00086 <span class="preprocessor">#endif</span>
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