<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> <title>Crypto++: idea.h Source File</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.3.7 --> <div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="namespacemembers.html">Namespace Members</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="globals.html">File Members</a></div> <h1>idea.h</h1><a href="idea_8h.html">Go to the documentation of this file.</a><pre class="fragment"><div>00001 <span class="preprocessor">#ifndef CRYPTOPP_IDEA_H</span> 00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_IDEA_H</span> 00003 <span class="preprocessor"></span><span class="comment"></span> 00004 <span class="comment">/** \file</span> 00005 <span class="comment">*/</span> 00006 00007 <span class="preprocessor">#include "seckey.h"</span> 00008 <span class="preprocessor">#include "secblock.h"</span> 00009 00010 NAMESPACE_BEGIN(CryptoPP) 00011 00012 <span class="comment">//! _</span> <a name="l00013"></a><a class="code" href="struct_i_d_e_a___info.html">00013</a> <span class="comment"></span>struct <a class="code" href="struct_i_d_e_a___info.html">IDEA_Info</a> : public <a class="code" href="class_fixed_block_size.html">FixedBlockSize</a><8>, public <a class="code" href="class_fixed_key_length.html">FixedKeyLength</a><16>, public <a class="code" href="class_fixed_rounds.html">FixedRounds</a><8> 00014 { 00015 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *StaticAlgorithmName() {<span class="keywordflow">return</span> <span class="stringliteral">"IDEA"</span>;} 00016 }; 00017 <span class="comment"></span> 00018 <span class="comment">/// <a href="http://www.weidai.com/scan-mirror/cs.html#IDEA">IDEA</a></span> <a name="l00019"></a><a class="code" href="class_i_d_e_a.html">00019</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="class_i_d_e_a.html">IDEA</a> : <span class="keyword">public</span> <a class="code" href="struct_i_d_e_a___info.html">IDEA_Info</a>, <span class="keyword">public</span> <a class="code" href="struct_block_cipher_documentation.html">BlockCipherDocumentation</a> 00020 { 00021 <span class="keyword">class </span>CRYPTOPP_NO_VTABLE Base : <span class="keyword">public</span> BlockCipherImpl<IDEA_Info> 00022 { 00023 <span class="keyword">public</span>: 00024 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> GetAlignment()<span class="keyword"> const </span>{<span class="keywordflow">return</span> 2;} 00025 <span class="keywordtype">void</span> ProcessAndXorBlock(<span class="keyword">const</span> byte *inBlock, <span class="keyword">const</span> byte *xorBlock, byte *outBlock) <span class="keyword">const</span>; 00026 00027 <span class="keywordtype">void</span> UncheckedSetKey(<a class="code" href="cryptlib_8h.html#a11">CipherDir</a> direction, <span class="keyword">const</span> byte *userKey, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> length); 00028 00029 <span class="keyword">private</span>: 00030 <span class="keywordtype">void</span> EnKey(<span class="keyword">const</span> byte *); 00031 <span class="keywordtype">void</span> DeKey(); 00032 FixedSizeSecBlock<word, 6*ROUNDS+4> m_key; 00033 00034 <span class="preprocessor"> #ifdef IDEA_LARGECACHE</span> 00035 <span class="preprocessor"></span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> LookupMUL(word &a, word b); 00036 <span class="keywordtype">void</span> LookupKeyLogs(); 00037 <span class="keyword">static</span> <span class="keywordtype">void</span> BuildLogTables(); 00038 <span class="keyword">static</span> <span class="keywordtype">bool</span> tablesBuilt; 00039 <span class="keyword">static</span> word16 log[0x10000], antilog[0x10000]; 00040 <span class="preprocessor"> #endif</span> 00041 <span class="preprocessor"></span> }; 00042 00043 <span class="keyword">public</span>: <a name="l00044"></a><a class="code" href="class_i_d_e_a.html#_i_d_e_aw0">00044</a> <span class="keyword">typedef</span> <a class="code" href="class_block_cipher_final.html">BlockCipherFinal<ENCRYPTION, Base></a> <a class="code" href="class_block_cipher_final.html">Encryption</a>; <a name="l00045"></a><a class="code" href="class_i_d_e_a.html#_i_d_e_aw1">00045</a> <span class="keyword">typedef</span> <a class="code" href="class_block_cipher_final.html">BlockCipherFinal<DECRYPTION, Base></a> <a class="code" href="class_block_cipher_final.html">Decryption</a>; 00046 }; 00047 00048 <span class="keyword">typedef</span> <a class="code" href="class_block_cipher_final.html">IDEA::Encryption</a> <a class="code" href="class_block_cipher_final.html">IDEAEncryption</a>; 00049 <span class="keyword">typedef</span> <a class="code" href="class_block_cipher_final.html">IDEA::Decryption</a> <a class="code" href="class_block_cipher_final.html">IDEADecryption</a>; 00050 00051 NAMESPACE_END 00052 00053 <span class="preprocessor">#endif</span> </div></pre><hr size="1"><address style="align: right;"><small>Generated on Sun Nov 7 08:23:57 2004 for Crypto++ by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.7 </small></address> </body> </html>