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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>Crypto++: gfpcrypt.h Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.2 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>File Members</span></a></li> </ul></div><h1>gfpcrypt.h</h1><a href="gfpcrypt_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef CRYPTOPP_GFPCRYPT_H</span><a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_GFPCRYPT_H</span><a name="l00003"></a>00003 <span class="preprocessor"></span><span class="comment"></span><a name="l00004"></a>00004 <span class="comment">/** \file</span><a name="l00005"></a>00005 <span class="comment"> Implementation of schemes based on DL over GF(p)</span><a name="l00006"></a>00006 <span class="comment">*/</span><a name="l00007"></a>00007 <a name="l00008"></a>00008 <span class="preprocessor">#include "<a class="code" href="pubkey_8h.html" title="This file contains helper classes/functions for implementing public key algorithms...">pubkey.h</a>"</span><a name="l00009"></a>00009 <span class="preprocessor">#include "modexppc.h"</span><a name="l00010"></a>00010 <span class="preprocessor">#include "sha.h"</span><a name="l00011"></a>00011 <span class="preprocessor">#include "algparam.h"</span><a name="l00012"></a>00012 <span class="preprocessor">#include "asn.h"</span><a name="l00013"></a>00013 <span class="preprocessor">#include "smartptr.h"</span><a name="l00014"></a>00014 <span class="preprocessor">#include "hmac.h"</span><a name="l00015"></a>00015 <a name="l00016"></a>00016 <span class="preprocessor">#include <limits.h></span><a name="l00017"></a>00017 <a name="l00018"></a>00018 NAMESPACE_BEGIN(CryptoPP)<a name="l00019"></a>00019 <a name="l00020"></a>00020 CRYPTOPP_DLL_TEMPLATE_CLASS <a class="code" href="class_d_l___group_parameters.html" title="interface for DL group parameters">DL_GroupParameters</a><<a class="code" href="class_integer.html" title="multiple precision integer and basic arithmetics">Integer</a>>;<a name="l00021"></a>00021 <span class="comment"></span><a name="l00022"></a>00022 <span class="comment">//! _</span><a name="l00023"></a><a class="code" href="class_d_l___group_parameters___integer_based.html">00023</a> <span class="comment"></span>class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE <a class="code" href="class_d_l___group_parameters___integer_based.html" title="_">DL_GroupParameters_IntegerBased</a> : public <a class="code" href="class_a_s_n1_crypto_material.html" title="_">ASN1CryptoMaterial</a><<a class="code" href="class_d_l___group_parameters.html" title="interface for DL group parameters">DL_GroupParameters</a><Integer> ><a name="l00024"></a>00024 {<a name="l00025"></a>00025 <span class="keyword">typedef</span> <a class="code" href="class_d_l___group_parameters___integer_based.html" title="_">DL_GroupParameters_IntegerBased</a> <a class="code" href="class_d_l___group_parameters___integer_based.html" title="_">ThisClass</a>;<a name="l00026"></a>00026 <a name="l00027"></a>00027 <span class="keyword">public</span>:<a name="l00028"></a><a class="code" href="class_d_l___group_parameters___integer_based.html#c0a0277c8d9d397cc30722aac33ad1b6">00028</a> <span class="keywordtype">void</span> Initialize(<span class="keyword">const</span> <a class="code" href="class_d_l___group_parameters___integer_based.html" title="_">DL_GroupParameters_IntegerBased</a> &params)<a name="l00029"></a>00029 {Initialize(params.<a class="code" href="class_d_l___group_parameters___integer_based.html#44b4560d7be0fc9c9ff9b19f65343136">GetModulus</a>(), params.<a class="code" href="class_d_l___group_parameters___integer_based.html#e6eb7fd2937f5eee9740d0db173f0475">GetSubgroupOrder</a>(), params.<a class="code" href="class_d_l___group_parameters.html#8537f155cb10263bf7014ad676d1c70b">GetSubgroupGenerator</a>());}<a name="l00030"></a><a class="code" href="class_d_l___group_parameters___integer_based.html#2ea22939c10623a4b76167a538ca7c76">00030</a> <span class="keywordtype">void</span> Initialize(<a class="code" href="class_random_number_generator.html" title="interface for random number generators">RandomNumberGenerator</a> &rng, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pbits)<a name="l00031"></a>00031 {GenerateRandom(rng, MakeParameters(<span class="stringliteral">"ModulusSize"</span>, (<span class="keywordtype">int</span>)pbits));}<a name="l00032"></a><a class="code" href="class_d_l___group_parameters___integer_based.html#25973fc93a80e0f199818633d63d205a">00032</a> <span class="keywordtype">void</span> Initialize(<span class="keyword">const</span> Integer &p, <span class="keyword">const</span> Integer &g)<a name="l00033"></a>00033 {SetModulusAndSubgroupGenerator(p, g); SetSubgroupOrder(ComputeGroupOrder(p)/2);}<a name="l00034"></a><a class="code" href="class_d_l___group_parameters___integer_based.html#c55789bf312e004b6d7d67ec3124ec7e">00034</a> <span class="keywordtype">void</span> Initialize(<span class="keyword">const</span> Integer &p, <span class="keyword">const</span> Integer &q, <span class="keyword">const</span> Integer &g)<a name="l00035"></a>00035 {SetModulusAndSubgroupGenerator(p, g); SetSubgroupOrder(q);}<a name="l00036"></a>00036 <a name="l00037"></a>00037 <span class="comment">// ASN1Object interface</span><a name="l00038"></a>00038 <span class="keywordtype">void</span> BERDecode(<a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a> &bt);<a name="l00039"></a>00039 <span class="keywordtype">void</span> DEREncode(<a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a> &bt) <span class="keyword">const</span>;<a name="l00040"></a>00040 <a name="l00041"></a>00041 <span class="comment">// GeneratibleCryptoMaterial interface</span><span class="comment"></span><a name="l00042"></a>00042 <span class="comment"> /*! parameters: (ModulusSize, SubgroupOrderSize (optional)) */</span><a name="l00043"></a>00043 <span class="keywordtype">void</span> GenerateRandom(<a class="code" href="class_random_number_generator.html" title="interface for random number generators">RandomNumberGenerator</a> &rng, <span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &alg);<a name="l00044"></a>00044 <span class="keywordtype">bool</span> GetVoidValue(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> std::type_info &valueType, <span class="keywordtype">void</span> *pValue) <span class="keyword">const</span>;<a name="l00045"></a>00045 <span class="keywordtype">void</span> AssignFrom(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &source);<a name="l00046"></a>00046 <a name="l00047"></a>00047 <span class="comment">// DL_GroupParameters</span><a name="l00048"></a><a class="code" href="class_d_l___group_parameters___integer_based.html#e6eb7fd2937f5eee9740d0db173f0475">00048</a> <span class="keyword">const</span> Integer & GetSubgroupOrder()<span class="keyword"> const </span>{<span class="keywordflow">return</span> m_q;}<a name="l00049"></a><a class="code" href="class_d_l___group_parameters___integer_based.html#2aa2e513e93ac6110fafa7c26fd6dcd3">00049</a> Integer GetGroupOrder()<span class="keyword"> const </span>{<span class="keywordflow">return</span> GetFieldType() == 1 ? GetModulus()-<a class="code" href="class_integer.html#8c070592581bf6c2f928c72bfa1c1638" title="avoid calling constructors for these frequently used integers">Integer::One</a>() : GetModulus()+<a class="code" href="class_integer.html#8c070592581bf6c2f928c72bfa1c1638" title="avoid calling constructors for these frequently used integers">Integer::One</a>();}<a name="l00050"></a>00050 <span class="keywordtype">bool</span> ValidateGroup(<a class="code" href="class_random_number_generator.html" title="interface for random number generators">RandomNumberGenerator</a> &rng, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> level) <span class="keyword">const</span>;⌨️ 快捷键说明
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