elgamal_8h-source.html

Crypto++是一个非常强大的密码学库,主要是功能全

00070                 m.<a class="code" href="class_integer.html#_integerz39_1">Encode</a>(plainText, plainTextLength);
00071                 <span class="keywordflow">return</span> <a class="code" href="struct_decoding_result.html">DecodingResult</a>(plainTextLength);
00072         }
00073 
00074         <span class="keyword">virtual</span> <span class="keyword">const</span> <a class="code" href="class_d_l___group_parameters___g_f_p.html">DL_GroupParameters_GFP</a> &amp; GetGroupParameters() <span class="keyword">const</span> =0;
00075 };
00076 
00077 <span class="keyword">template</span> &lt;<span class="keyword">class</span> BASE, <span class="keyword">class</span> SCHEME_OPTIONS, <span class="keyword">class</span> KEY&gt;
00078 <span class="keyword">class </span>ElGamalObjectImpl : <span class="keyword">public</span> <a class="code" href="class_d_l___object_impl_base.html">DL_ObjectImplBase</a>&lt;BASE, SCHEME_OPTIONS, KEY&gt;, <span class="keyword">public</span> ElGamalBase
00079 {
00080 <span class="keyword">public</span>:
00081         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> FixedMaxPlaintextLength()<span class="keyword"> const </span>{<span class="keywordflow">return</span> MaxPlaintextLength(FixedCiphertextLength());}
00082         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> FixedCiphertextLength()<span class="keyword"> const </span>{<span class="keywordflow">return</span> CiphertextLength(0);}
00083 
00084         <span class="keyword">const</span> <a class="code" href="class_d_l___group_parameters___g_f_p.html">DL_GroupParameters_GFP</a> &amp; GetGroupParameters()<span class="keyword"> const </span>{<span class="keywordflow">return</span> GetKey().GetGroupParameters();}
00085 
00086         <a class="code" href="struct_decoding_result.html">DecodingResult</a> FixedLengthDecrypt(<span class="keyword">const</span> byte *cipherText, byte *plainText)<span class="keyword"> const</span>
00087 <span class="keyword">                </span>{<span class="keywordflow">return</span> Decrypt(cipherText, FixedCiphertextLength(), plainText);}
00088 
00089 <span class="keyword">protected</span>:
00090         <span class="keyword">const</span> <a class="code" href="class_d_l___key_agreement_algorithm.html">DL_KeyAgreementAlgorithm&lt;Integer&gt;</a> &amp; GetKeyAgreementAlgorithm()<span class="keyword"> const </span>{<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00091         <span class="keyword">const</span> <a class="code" href="class_d_l___key_derivation_algorithm.html">DL_KeyDerivationAlgorithm&lt;Integer&gt;</a> &amp; GetKeyDerivationAlgorithm()<span class="keyword"> const </span>{<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00092         <span class="keyword">const</span> <a class="code" href="class_d_l___symmetric_encryption_algorithm.html">DL_SymmetricEncryptionAlgorithm</a> &amp; GetSymmetricEncryptionAlgorithm()<span class="keyword"> const </span>{<span class="keywordflow">return</span> *<span class="keyword">this</span>;}
00093 };
00094 
00095 <span class="keyword">struct </span>ElGamalKeys
00096 {
00097         <span class="keyword">typedef</span> <a class="code" href="class_d_l___group_parameters___g_f_p___default_safe_prime.html">DL_CryptoKeys_GFP::GroupParameters</a> GroupParameters;
00098         <span class="keyword">typedef</span> <a class="code" href="class_d_l___private_key___g_f_p___old_format.html">DL_PrivateKey_GFP_OldFormat&lt;DL_CryptoKeys_GFP::PrivateKey&gt;</a> <a class="code" href="class_private_key.html">PrivateKey</a>;
00099         <span class="keyword">typedef</span> <a class="code" href="class_d_l___public_key___g_f_p___old_format.html">DL_PublicKey_GFP_OldFormat&lt;DL_CryptoKeys_GFP::PublicKey&gt;</a> <a class="code" href="class_public_key.html">PublicKey</a>;
00100 };
00101 <span class="comment"></span>
00102 <span class="comment">//! ElGamal encryption scheme with non-standard padding</span>
<a name="l00103"></a><a class="code" href="struct_el_gamal.html">00103</a> <span class="comment"></span><span class="keyword">struct </span><a class="code" href="struct_el_gamal.html">ElGamal</a>
00104 {
00105         <span class="keyword">typedef</span> <a class="code" href="struct_d_l___crypto_scheme_options.html">DL_CryptoSchemeOptions&lt;ElGamal, ElGamalKeys, int, int, int&gt;</a> <a class="code" href="struct_d_l___crypto_scheme_options.html">SchemeOptions</a>;
00106 
00107         <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> * StaticAlgorithmName() {<span class="keywordflow">return</span> <span class="stringliteral">"ElgamalEnc/Crypto++Padding"</span>;}
00108 
00109         <span class="keyword">class </span>EncryptorImpl : <span class="keyword">public</span> ElGamalObjectImpl&lt;DL_EncryptorBase&lt;Integer, PK_FixedLengthEncryptor&gt;,  SchemeOptions, SchemeOptions::PublicKey&gt;, <span class="keyword">public</span> <a class="code" href="class_public_key_copier.html">PublicKeyCopier</a>&lt;SchemeOptions&gt;
00110         {
00111         <span class="keyword">public</span>:
00112                 <span class="keywordtype">void</span> CopyKeyInto(SchemeOptions::PublicKey &amp;key)<span class="keyword"> const</span>
00113 <span class="keyword">                        </span>{key = GetKey();}
00114         };
00115 
00116         <span class="keyword">class </span>DecryptorImpl : <span class="keyword">public</span> ElGamalObjectImpl&lt;DL_DecryptorBase&lt;Integer, PK_FixedLengthDecryptor&gt;, SchemeOptions, SchemeOptions::PrivateKey&gt;, <span class="keyword">public</span> <a class="code" href="class_private_key_copier.html">PrivateKeyCopier</a>&lt;SchemeOptions&gt;
00117         {
00118         <span class="keyword">public</span>:
00119                 <span class="keywordtype">void</span> CopyKeyInto(SchemeOptions::PublicKey &amp;key)<span class="keyword"> const</span>
00120 <span class="keyword">                        </span>{GetKey().MakePublicKey(key);}
00121                 <span class="keywordtype">void</span> CopyKeyInto(SchemeOptions::PrivateKey &amp;key)<span class="keyword"> const</span>
00122 <span class="keyword">                        </span>{key = GetKey();}
00123         };
00124 
00125         <span class="keyword">typedef</span> SchemeOptions::GroupParameters GroupParameters;<span class="comment"></span>
00126 <span class="comment">        //! implements PK_Encryptor interface</span>
<a name="l00127"></a><a class="code" href="struct_el_gamal.html#_el_gamalw2">00127</a> <span class="comment"></span>        <span class="keyword">typedef</span> <a class="code" href="class_p_k___final_template.html">PK_FinalTemplate&lt;EncryptorImpl&gt;</a> <a class="code" href="class_p_k___final_template.html">Encryptor</a>;<span class="comment"></span>
00128 <span class="comment">        //! implements PK_Decryptor interface</span>
<a name="l00129"></a><a class="code" href="struct_el_gamal.html#_el_gamalw3">00129</a> <span class="comment"></span>        <span class="keyword">typedef</span> <a class="code" href="class_p_k___final_template.html">PK_FinalTemplate&lt;DecryptorImpl&gt;</a> <a class="code" href="class_p_k___final_template.html">Decryptor</a>;
00130 };
00131 
00132 <span class="keyword">typedef</span> <a class="code" href="class_p_k___final_template.html">ElGamal::Encryptor</a> <a class="code" href="class_p_k___final_template.html">ElGamalEncryptor</a>;
00133 <span class="keyword">typedef</span> <a class="code" href="class_p_k___final_template.html">ElGamal::Decryptor</a> <a class="code" href="class_p_k___final_template.html">ElGamalDecryptor</a>;
00134 
00135 NAMESPACE_END
00136 
00137 <span class="preprocessor">#endif</span>
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