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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++: xtrcrypt.cpp 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>xtrcrypt.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// xtrcrypt.cpp - written and placed in the public domain by Wei Dai</span><a name="l00002"></a>00002 <a name="l00003"></a>00003 <span class="preprocessor">#include "pch.h"</span><a name="l00004"></a>00004 <span class="preprocessor">#include "<a class="code" href="xtrcrypt_8h.html" title=""The XTR public key system" by Arjen K.">xtrcrypt.h</a>"</span><a name="l00005"></a>00005 <span class="preprocessor">#include "nbtheory.h"</span><a name="l00006"></a>00006 <span class="preprocessor">#include "asn.h"</span><a name="l00007"></a>00007 <span class="preprocessor">#include "argnames.h"</span><a name="l00008"></a>00008 <a name="l00009"></a>00009 NAMESPACE_BEGIN(CryptoPP)<a name="l00010"></a>00010 <a name="l00011"></a><a class="code" href="class_x_t_r___d_h.html#c569da5583dcd3fc1f10795cfda8c123">00011</a> <a class="code" href="class_x_t_r___d_h.html" title="XTR-DH with key validation.">XTR_DH</a>::<a class="code" href="class_x_t_r___d_h.html" title="XTR-DH with key validation.">XTR_DH</a>(const <a class="code" href="class_integer.html" title="multiple precision integer and basic arithmetics">Integer</a> &p, const <a class="code" href="class_integer.html" title="multiple precision integer and basic arithmetics">Integer</a> &q, const <a class="code" href="class_g_f_p2_element.html" title="an element of GF(p^2)">GFP2Element</a> &g)<a name="l00012"></a>00012 : m_p(p), m_q(q), m_g(g)<a name="l00013"></a>00013 {<a name="l00014"></a>00014 }<a name="l00015"></a>00015 <a name="l00016"></a><a class="code" href="class_x_t_r___d_h.html#867f652dfc05dde7b6a1866a777e990b">00016</a> <a class="code" href="class_x_t_r___d_h.html#c569da5583dcd3fc1f10795cfda8c123">XTR_DH::XTR_DH</a>(<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, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> qbits)<a name="l00017"></a>00017 {<a name="l00018"></a>00018 XTR_FindPrimesAndGenerator(rng, m_p, m_q, m_g, pbits, qbits);<a name="l00019"></a>00019 }<a name="l00020"></a>00020 <a name="l00021"></a><a class="code" href="class_x_t_r___d_h.html#b55db82b3af6c9b3e1263a757ba01a30">00021</a> <a class="code" href="class_x_t_r___d_h.html#c569da5583dcd3fc1f10795cfda8c123">XTR_DH::XTR_DH</a>(<a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a> &bt)<a name="l00022"></a>00022 {<a name="l00023"></a>00023 <a class="code" href="class_b_e_r_sequence_decoder.html" title="BER Sequence Decoder.">BERSequenceDecoder</a> seq(bt);<a name="l00024"></a>00024 m_p.<a class="code" href="class_integer.html#810fc0382f8928893fe192ab79b1972c">BERDecode</a>(seq);<a name="l00025"></a>00025 m_q.<a class="code" href="class_integer.html#810fc0382f8928893fe192ab79b1972c">BERDecode</a>(seq);<a name="l00026"></a>00026 m_g.<a class="code" href="class_g_f_p2_element.html#65778354421ad2da42fce4221e6da05c">c1</a>.<a class="code" href="class_integer.html#810fc0382f8928893fe192ab79b1972c">BERDecode</a>(seq);<a name="l00027"></a>00027 m_g.<a class="code" href="class_g_f_p2_element.html#1688b28610e1b080a9304daad7c73bbb">c2</a>.<a class="code" href="class_integer.html#810fc0382f8928893fe192ab79b1972c">BERDecode</a>(seq);<a name="l00028"></a>00028 seq.<a class="code" href="class_b_e_r_general_decoder.html#40b14625c98ac7febb8ca218d02358ad">MessageEnd</a>();<a name="l00029"></a>00029 }<a name="l00030"></a>00030 <a name="l00031"></a><a class="code" href="class_x_t_r___d_h.html#9690ce0b86739e06adeb8de130fede01">00031</a> <span class="keywordtype">void</span> <a class="code" href="class_x_t_r___d_h.html#9690ce0b86739e06adeb8de130fede01" title="for backwards compatibility, calls GetMaterial().Save(bt)">XTR_DH::DEREncode</a>(<a class="code" href="class_buffered_transformation.html" title="interface for buffered transformations">BufferedTransformation</a> &bt)<span class="keyword"> const</span><a name="l00032"></a>00032 <span class="keyword"></span>{<a name="l00033"></a>00033 <a class="code" href="class_d_e_r_sequence_encoder.html" title="DER Sequence Encoder.">DERSequenceEncoder</a> seq(bt);<a name="l00034"></a>00034 m_p.<a class="code" href="class_integer.html#6ab51a05bee88cfa690179611e8a084e" title="encode using Distinguished Encoding Rules, put result into a BufferedTransformation...">DEREncode</a>(seq);<a name="l00035"></a>00035 m_q.<a class="code" href="class_integer.html#6ab51a05bee88cfa690179611e8a084e" title="encode using Distinguished Encoding Rules, put result into a BufferedTransformation...">DEREncode</a>(seq);<a name="l00036"></a>00036 m_g.<a class="code" href="class_g_f_p2_element.html#65778354421ad2da42fce4221e6da05c">c1</a>.<a class="code" href="class_integer.html#6ab51a05bee88cfa690179611e8a084e" title="encode using Distinguished Encoding Rules, put result into a BufferedTransformation...">DEREncode</a>(seq);<a name="l00037"></a>00037 m_g.<a class="code" href="class_g_f_p2_element.html#1688b28610e1b080a9304daad7c73bbb">c2</a>.<a class="code" href="class_integer.html#6ab51a05bee88cfa690179611e8a084e" title="encode using Distinguished Encoding Rules, put result into a BufferedTransformation...">DEREncode</a>(seq);<a name="l00038"></a>00038 seq.<a class="code" href="class_d_e_r_general_encoder.html#cb5f1a94ba97027c603b019bd5228510">MessageEnd</a>();<a name="l00039"></a>00039 }<a name="l00040"></a>00040 <a name="l00041"></a><a class="code" href="class_x_t_r___d_h.html#27c92e572df6e8c1cf73a88d72e8dba5">00041</a> <span class="keywordtype">bool</span> <a class="code" href="class_x_t_r___d_h.html#27c92e572df6e8c1cf73a88d72e8dba5" title="check this object for errors">XTR_DH::Validate</a>(<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><a name="l00042"></a>00042 <span class="keyword"></span>{<a name="l00043"></a>00043 <span class="keywordtype">bool</span> pass = <span class="keyword">true</span>;<a name="l00044"></a>00044 pass = pass && m_p > <a class="code" href="class_integer.html#8c070592581bf6c2f928c72bfa1c1638" title="avoid calling constructors for these frequently used integers">Integer::One</a>() && m_p.<a class="code" href="class_integer.html#ed4bb7208a18b986ef3e1a7d92e06d1d">IsOdd</a>();<a name="l00045"></a>00045 pass = pass && m_q > <a class="code" href="class_integer.html#8c070592581bf6c2f928c72bfa1c1638" title="avoid calling constructors for these frequently used integers">Integer::One</a>() && m_q.<a class="code" href="class_integer.html#ed4bb7208a18b986ef3e1a7d92e06d1d">IsOdd</a>();<a name="l00046"></a>00046 <a class="code" href="class_g_f_p2_element.html" title="an element of GF(p^2)">GFP2Element</a> three = <a class="code" href="class_g_f_p2___o_n_b.html" title="GF(p^2), optimal normal basis.">GFP2_ONB<ModularArithmetic></a>(m_p).ConvertIn(3);<a name="l00047"></a>00047 pass = pass && !(m_g.<a class="code" href="class_g_f_p2_element.html#65778354421ad2da42fce4221e6da05c">c1</a>.<a class="code" href="class_integer.html#d767ae81c89be3804da8785e132d2d1f">IsNegative</a>() || m_g.<a class="code" href="class_g_f_p2_element.html#1688b28610e1b080a9304daad7c73bbb">c2</a>.<a class="code" href="class_integer.html#d767ae81c89be3804da8785e132d2d1f">IsNegative</a>() || m_g.<a class="code" href="class_g_f_p2_element.html#65778354421ad2da42fce4221e6da05c">c1</a> >= m_p || m_g.<a class="code" href="class_g_f_p2_element.html#1688b28610e1b080a9304daad7c73bbb">c2</a> >= m_p || m_g == three);⌨️ 快捷键说明
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