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Crypto++是一个非常强大的密码学库,主要是功能全

00123 <span class="keyword">template</span> &lt;word r&gt;
<a name="l00124"></a><a class="code" href="class_r_w_function.html#_r_w_functiona7">00124</a> <span class="keywordtype">bool</span> <a class="code" href="class_r_w_function.html#_r_w_functiona7">RWFunction&lt;r&gt;::GetVoidValue</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> std::type_info &amp;valueType, <span class="keywordtype">void</span> *pValue)<span class="keyword"> const</span>
00125 <span class="keyword"></span>{
00126         <span class="keywordflow">return</span> GetValueHelper(<span class="keyword">this</span>, name, valueType, pValue).Assignable()
00127                 CRYPTOPP_GET_FUNCTION_ENTRY(<a class="code" href="namespace_name.html#a15">Modulus</a>)
00128                 ;
00129 }
00130 
00131 <span class="keyword">template</span> &lt;word r&gt;
<a name="l00132"></a><a class="code" href="class_r_w_function.html#_r_w_functiona8">00132</a> <span class="keywordtype">void</span> <a class="code" href="class_r_w_function.html#_r_w_functiona8">RWFunction&lt;r&gt;::AssignFrom</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;source)
00133 {
00134         AssignFromHelper(<span class="keyword">this</span>, source)
00135                 CRYPTOPP_SET_FUNCTION_ENTRY(<a class="code" href="namespace_name.html#a15">Modulus</a>)
00136                 ;
00137 }
00138 
00139 <span class="comment">// *****************************************************************************</span>
00140 <span class="comment">// private key operations:</span>
00141 
00142 <span class="comment">// generate a random private key</span>
00143 <span class="keyword">template</span> &lt;word r&gt;
<a name="l00144"></a><a class="code" href="class_invertible_r_w_function.html#_invertible_r_w_functiona8">00144</a> <span class="keywordtype">void</span> <a class="code" href="class_invertible_r_w_function.html#_invertible_r_w_functiona8">InvertibleRWFunction&lt;r&gt;::GenerateRandom</a>(<a class="code" href="class_random_number_generator.html">RandomNumberGenerator</a> &amp;rng, <span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;alg)
00145 {
00146         <span class="keywordtype">int</span> modulusSize = 2048;
00147         alg.<a class="code" href="class_name_value_pairs.html#_x_t_r___d_ha42">GetIntValue</a>(<span class="stringliteral">"ModulusSize"</span>, modulusSize) || alg.<a class="code" href="class_name_value_pairs.html#_x_t_r___d_ha42">GetIntValue</a>(<span class="stringliteral">"KeySize"</span>, modulusSize);
00148 
00149         <span class="keywordflow">if</span> (modulusSize &lt; 16)
00150                 <span class="keywordflow">throw</span> <a class="code" href="class_invalid_argument.html">InvalidArgument</a>(<span class="stringliteral">"InvertibleRWFunction: specified modulus length is too small"</span>);
00151 
00152         <span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;primeParam = MakeParametersForTwoPrimesOfEqualSize(modulusSize);
00153         m_p.<a class="code" href="class_integer.html#_integerz43_14">GenerateRandom</a>(rng, CombinedNameValuePairs(primeParam, MakeParameters(<span class="stringliteral">"EquivalentTo"</span>, 3)(<span class="stringliteral">"Mod"</span>, 8)));
00154         m_q.<a class="code" href="class_integer.html#_integerz43_14">GenerateRandom</a>(rng, CombinedNameValuePairs(primeParam, MakeParameters(<span class="stringliteral">"EquivalentTo"</span>, 7)(<span class="stringliteral">"Mod"</span>, 8)));
00155 
00156         m_n = m_p * m_q;
00157         m_u = m_q.<a class="code" href="class_integer.html#_integerz49_7">InverseMod</a>(m_p);
00158 }
00159 
00160 <span class="keyword">template</span> &lt;word r&gt;
00161 <span class="keywordtype">void</span> <a class="code" href="class_invertible_r_w_function.html">InvertibleRWFunction&lt;r&gt;::BERDecode</a>(<a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> &amp;bt)
00162 {
00163         <a class="code" href="class_b_e_r_sequence_decoder.html">BERSequenceDecoder</a> seq(bt);
00164         m_n.<a class="code" href="class_integer.html#_integerz39_9">BERDecode</a>(seq);
00165         m_p.<a class="code" href="class_integer.html#_integerz39_9">BERDecode</a>(seq);
00166         m_q.<a class="code" href="class_integer.html#_integerz39_9">BERDecode</a>(seq);
00167         m_u.<a class="code" href="class_integer.html#_integerz39_9">BERDecode</a>(seq);
00168         seq.<a class="code" href="class_b_e_r_general_decoder.html#_b_e_r_set_decodera9">MessageEnd</a>();
00169 }
00170 
00171 <span class="keyword">template</span> &lt;word r&gt;
00172 <span class="keywordtype">void</span> <a class="code" href="class_invertible_r_w_function.html">InvertibleRWFunction&lt;r&gt;::DEREncode</a>(<a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> &amp;bt)<span class="keyword"> const</span>
00173 <span class="keyword"></span>{
00174         <a class="code" href="class_d_e_r_sequence_encoder.html">DERSequenceEncoder</a> seq(bt);
00175         m_n.<a class="code" href="class_integer.html#_integerz39_3">DEREncode</a>(seq);
00176         m_p.<a class="code" href="class_integer.html#_integerz39_3">DEREncode</a>(seq);
00177         m_q.<a class="code" href="class_integer.html#_integerz39_3">DEREncode</a>(seq);
00178         m_u.<a class="code" href="class_integer.html#_integerz39_3">DEREncode</a>(seq);
00179         seq.<a class="code" href="class_d_e_r_general_encoder.html#_d_e_r_set_encodera2">MessageEnd</a>();
00180 }
00181 
00182 <span class="keyword">template</span> &lt;word r&gt;
00183 <a class="code" href="class_integer.html">Integer</a> <a class="code" href="class_invertible_r_w_function.html">InvertibleRWFunction&lt;r&gt;::CalculateInverse</a>(<span class="keyword">const</span> <a class="code" href="class_integer.html">Integer</a> &amp;in)<span class="keyword"> const</span>
00184 <span class="keyword"></span>{
00185         DoQuickSanityCheck();
00186 
00187         <a class="code" href="class_integer.html">Integer</a> cp=in%m_p, cq=in%m_q;
00188 
00189         <span class="keywordflow">if</span> (Jacobi(cp, m_p) * Jacobi(cq, m_q) != 1)
00190         {
00191                 cp = cp%2 ? (cp+m_p) &gt;&gt; 1 : cp &gt;&gt; 1;
00192                 cq = cq%2 ? (cq+m_q) &gt;&gt; 1 : cq &gt;&gt; 1;
00193         }
00194 
00195         cp = ModularSquareRoot(cp, m_p);
00196         cq = ModularSquareRoot(cq, m_q);
00197 
00198         <a class="code" href="class_integer.html">Integer</a> out = CRT(cq, m_q, cp, m_p, m_u);
00199 
00200         <span class="keywordflow">return</span> STDMIN(out, m_n-out);
00201 }
00202 
00203 <span class="keyword">template</span> &lt;word r&gt;
<a name="l00204"></a><a class="code" href="class_invertible_r_w_function.html#_invertible_r_w_functiona5">00204</a> <span class="keywordtype">bool</span> <a class="code" href="class_invertible_r_w_function.html#_invertible_r_w_functiona5">InvertibleRWFunction&lt;r&gt;::Validate</a>(<a class="code" href="class_random_number_generator.html">RandomNumberGenerator</a> &amp;rng, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> level)<span class="keyword"> const</span>
00205 <span class="keyword"></span>{
00206         <span class="keywordtype">bool</span> pass = <a class="code" href="class_r_w_function.html#_r_w_functiona6">RWFunction&lt;r&gt;::Validate</a>(rng, level);
00207         pass = pass &amp;&amp; m_p &gt; <a class="code" href="class_integer.html#_integerz37_11">Integer::One</a>() &amp;&amp; m_p%8 == 3 &amp;&amp; m_p &lt; m_n;
00208         pass = pass &amp;&amp; m_q &gt; <a class="code" href="class_integer.html#_integerz37_11">Integer::One</a>() &amp;&amp; m_q%8 == 7 &amp;&amp; m_q &lt; m_n;
00209         pass = pass &amp;&amp; m_u.<a class="code" href="class_integer.html#_integerz41_12">IsPositive</a>() &amp;&amp; m_u &lt; m_p;
00210         <span class="keywordflow">if</span> (level &gt;= 1)
00211         {
00212                 pass = pass &amp;&amp; m_p * m_q == m_n;
00213                 pass = pass &amp;&amp; m_u * m_q % m_p == 1;
00214         }
00215         <span class="keywordflow">if</span> (level &gt;= 2)
00216                 pass = pass &amp;&amp; VerifyPrime(rng, m_p, level-2) &amp;&amp; VerifyPrime(rng, m_q, level-2);
00217         <span class="keywordflow">return</span> pass;
00218 }
00219 
00220 <span class="keyword">template</span> &lt;word r&gt;
<a name="l00221"></a><a class="code" href="class_invertible_r_w_function.html#_invertible_r_w_functiona6">00221</a> <span class="keywordtype">bool</span> <a class="code" href="class_invertible_r_w_function.html#_invertible_r_w_functiona6">InvertibleRWFunction&lt;r&gt;::GetVoidValue</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> std::type_info &amp;valueType, <span class="keywordtype">void</span> *pValue)<span class="keyword"> const</span>
00222 <span class="keyword"></span>{
00223         <span class="keywordflow">return</span> GetValueHelper&lt;RWFunction&lt;r&gt; &gt;(<span class="keyword">this</span>, name, valueType, pValue).Assignable()
00224                 CRYPTOPP_GET_FUNCTION_ENTRY(<a class="code" href="namespace_name.html#a24">Prime1</a>)
00225                 CRYPTOPP_GET_FUNCTION_ENTRY(<a class="code" href="namespace_name.html#a25">Prime2</a>)
00226                 CRYPTOPP_GET_FUNCTION_ENTRY(<a class="code" href="namespace_name.html#a28">MultiplicativeInverseOfPrime2ModPrime1</a>)
00227                 ;
00228 }
00229 
00230 <span class="keyword">template</span> &lt;word r&gt;
<a name="l00231"></a><a class="code" href="class_invertible_r_w_function.html#_invertible_r_w_functiona7">00231</a> <span class="keywordtype">void</span> <a class="code" href="class_invertible_r_w_function.html#_invertible_r_w_functiona7">InvertibleRWFunction&lt;r&gt;::AssignFrom</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &amp;source)
00232 {
00233         AssignFromHelper&lt;RWFunction&lt;r&gt; &gt;(<span class="keyword">this</span>, source)
00234                 CRYPTOPP_SET_FUNCTION_ENTRY(<a class="code" href="namespace_name.html#a24">Prime1</a>)
00235                 CRYPTOPP_SET_FUNCTION_ENTRY(<a class="code" href="namespace_name.html#a25">Prime2</a>)
00236                 CRYPTOPP_SET_FUNCTION_ENTRY(<a class="code" href="namespace_name.html#a28">MultiplicativeInverseOfPrime2ModPrime1</a>)
00237                 ;
00238 }
00239 
00240 <span class="keyword">template</span> <span class="keyword">class </span><a class="code" href="class_r_w_function.html">RWFunction&lt;IFSSA_R&gt;</a>;
00241 <span class="keyword">template</span> <span class="keyword">class </span><a class="code" href="class_invertible_r_w_function.html">InvertibleRWFunction&lt;IFSSA_R&gt;</a>;
00242 
00243 NAMESPACE_END
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