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著名的密码库Crypto++的文档 C++语言的杰作。程序员必备。

<a name="l00092"></a>00092         fail = memcmp(output2, buf, 20) != 0;
<a name="l00093"></a>00093         pass = pass &amp;&amp; !fail;
<a name="l00094"></a>00094 
<a name="l00095"></a>00095         cout &lt;&lt; (fail ? <span class="stringliteral">"FAILED    "</span> : <span class="stringliteral">"passed    "</span>);
<a name="l00096"></a>00096         <span class="keywordflow">for</span> (j=0;j&lt;20;j++)
<a name="l00097"></a>00097                 cout &lt;&lt; setw(2) &lt;&lt; setfill(<span class="charliteral">'0'</span>) &lt;&lt; hex &lt;&lt; (<span class="keywordtype">int</span>)buf[j];
<a name="l00098"></a>00098         cout &lt;&lt; endl;
<a name="l00099"></a>00099 
<a name="l00100"></a>00100         <span class="keywordflow">return</span> pass;
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102 
<a name="l00103"></a>00103 <span class="keywordtype">bool</span> SignatureValidate(<a class="code" href="class_p_k___signer.html" title="interface for public-key signers">PK_Signer</a> &amp;priv, <a class="code" href="class_p_k___verifier.html" title="interface for public-key signature verifiers">PK_Verifier</a> &amp;pub, <span class="keywordtype">bool</span> thorough = <span class="keyword">false</span>)
<a name="l00104"></a>00104 {
<a name="l00105"></a>00105         <span class="keywordtype">bool</span> pass = <span class="keyword">true</span>, fail;
<a name="l00106"></a>00106 
<a name="l00107"></a>00107         fail = !pub.<a class="code" href="class_public_key_algorithm.html#8c2bb02751348ff151ad9d4756cafd74" title="returns a const reference to the crypto material used by this object">GetMaterial</a>().<a class="code" href="class_crypto_material.html#439743c6b4e89ca8228a12fa1ea43ab1" title="check this object for errors">Validate</a>(GlobalRNG(), thorough ? 3 : 2) || !priv.<a class="code" href="class_private_key_algorithm.html#59f3867165685cc6ac6be3f53d5f371b" title="returns a const reference to the crypto material used by this object">GetMaterial</a>().<a class="code" href="class_crypto_material.html#439743c6b4e89ca8228a12fa1ea43ab1" title="check this object for errors">Validate</a>(GlobalRNG(), thorough ? 3 : 2);
<a name="l00108"></a>00108         pass = pass &amp;&amp; !fail;
<a name="l00109"></a>00109 
<a name="l00110"></a>00110         cout &lt;&lt; (fail ? <span class="stringliteral">"FAILED    "</span> : <span class="stringliteral">"passed    "</span>);
<a name="l00111"></a>00111         cout &lt;&lt; <span class="stringliteral">"signature key validation\n"</span>;
<a name="l00112"></a>00112 
<a name="l00113"></a>00113         <span class="keyword">const</span> byte *message = (byte *)<span class="stringliteral">"test message"</span>;
<a name="l00114"></a>00114         <span class="keyword">const</span> <span class="keywordtype">int</span> messageLen = 12;
<a name="l00115"></a>00115 
<a name="l00116"></a>00116         <a class="code" href="class_sec_block.html" title="a block of memory allocated using A">SecByteBlock</a> signature(priv.<a class="code" href="class_p_k___signature_scheme.html#665909c10f27db81343a01c814488652" title="maximum signature length produced for a given length of recoverable message part">MaxSignatureLength</a>());
<a name="l00117"></a>00117         <span class="keywordtype">size_t</span> signatureLength = priv.<a class="code" href="class_p_k___signer.html#6781cdd4a4a750a9720e268c90a24387" title="sign a message">SignMessage</a>(GlobalRNG(), message, messageLen, signature);
<a name="l00118"></a>00118         fail = !pub.<a class="code" href="class_p_k___verifier.html#4640a967fd291f8be86c1b721dc73b2d" title="check whether input signature is a valid signature for input message">VerifyMessage</a>(message, messageLen, signature, signatureLength);
<a name="l00119"></a>00119         pass = pass &amp;&amp; !fail;
<a name="l00120"></a>00120 
<a name="l00121"></a>00121         cout &lt;&lt; (fail ? <span class="stringliteral">"FAILED    "</span> : <span class="stringliteral">"passed    "</span>);
<a name="l00122"></a>00122         cout &lt;&lt; <span class="stringliteral">"signature and verification\n"</span>;
<a name="l00123"></a>00123 
<a name="l00124"></a>00124         ++signature[0];
<a name="l00125"></a>00125         fail = pub.<a class="code" href="class_p_k___verifier.html#4640a967fd291f8be86c1b721dc73b2d" title="check whether input signature is a valid signature for input message">VerifyMessage</a>(message, messageLen, signature, signatureLength);
<a name="l00126"></a>00126         pass = pass &amp;&amp; !fail;
<a name="l00127"></a>00127 
<a name="l00128"></a>00128         cout &lt;&lt; (fail ? <span class="stringliteral">"FAILED    "</span> : <span class="stringliteral">"passed    "</span>);
<a name="l00129"></a>00129         cout &lt;&lt; <span class="stringliteral">"checking invalid signature"</span> &lt;&lt; endl;
<a name="l00130"></a>00130 
<a name="l00131"></a>00131         <span class="keywordflow">if</span> (priv.<a class="code" href="class_p_k___signature_scheme.html#f8f3fd3692c258b72be3dad6da3423ec" title="length of longest message that can be recovered, or 0 if this signature scheme does...">MaxRecoverableLength</a>() &gt; 0)
<a name="l00132"></a>00132         {
<a name="l00133"></a>00133                 signatureLength = priv.<a class="code" href="class_p_k___signer.html#76eb862d0cb8d80e0bee7ad52a0da707" title="sign a recoverable message">SignMessageWithRecovery</a>(GlobalRNG(), message, messageLen, NULL, 0, signature);
<a name="l00134"></a>00134                 <a class="code" href="class_sec_block.html" title="a block of memory allocated using A">SecByteBlock</a> recovered(priv.<a class="code" href="class_p_k___signature_scheme.html#2f2a599ba385e63766d4a7f7ccf2a884" title="length of longest message that can be recovered from a signature of given length...">MaxRecoverableLengthFromSignatureLength</a>(signatureLength));
<a name="l00135"></a>00135                 <a class="code" href="struct_decoding_result.html" title="used to return decoding results">DecodingResult</a> result = pub.<a class="code" href="class_p_k___verifier.html#05d969651d86a63d5002057113e0cab7" title="recover a message from its signature">RecoverMessage</a>(recovered, NULL, 0, signature, signatureLength);
<a name="l00136"></a>00136                 fail = !(result.isValidCoding &amp;&amp; result.messageLength == messageLen &amp;&amp; memcmp(recovered, message, messageLen) == 0);
<a name="l00137"></a>00137                 pass = pass &amp;&amp; !fail;
<a name="l00138"></a>00138 
<a name="l00139"></a>00139                 cout &lt;&lt; (fail ? <span class="stringliteral">"FAILED    "</span> : <span class="stringliteral">"passed    "</span>);
<a name="l00140"></a>00140                 cout &lt;&lt; <span class="stringliteral">"signature and verification with recovery"</span> &lt;&lt; endl;
<a name="l00141"></a>00141 
<a name="l00142"></a>00142                 ++signature[0];
<a name="l00143"></a>00143                 result = pub.<a class="code" href="class_p_k___verifier.html#05d969651d86a63d5002057113e0cab7" title="recover a message from its signature">RecoverMessage</a>(recovered, NULL, 0, signature, signatureLength);
<a name="l00144"></a>00144                 fail = result.<a class="code" href="struct_decoding_result.html#b88062318cd0e68b3061db351d3ba34d">isValidCoding</a>;
<a name="l00145"></a>00145                 pass = pass &amp;&amp; !fail;
<a name="l00146"></a>00146 
<a name="l00147"></a>00147                 cout &lt;&lt; (fail ? <span class="stringliteral">"FAILED    "</span> : <span class="stringliteral">"passed    "</span>);
<a name="l00148"></a>00148                 cout &lt;&lt; <span class="stringliteral">"recovery with invalid signature"</span> &lt;&lt; endl;
<a name="l00149"></a>00149         }
<a name="l00150"></a>00150 
<a name="l00151"></a>00151         <span class="keywordflow">return</span> pass;
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153 
<a name="l00154"></a>00154 <span class="keywordtype">bool</span> CryptoSystemValidate(<a class="code" href="class_p_k___decryptor.html" title="interface for public-key decryptors">PK_Decryptor</a> &amp;priv, <a class="code" href="class_p_k___encryptor.html" title="interface for public-key encryptors">PK_Encryptor</a> &amp;pub, <span class="keywordtype">bool</span> thorough = <span class="keyword">false</span>)
<a name="l00155"></a>00155 {
<a name="l00156"></a>00156         <span class="keywordtype">bool</span> pass = <span class="keyword">true</span>, fail;
<a name="l00157"></a>00157 
<a name="l00158"></a>00158         fail = !pub.<a class="code" href="class_public_key_algorithm.html#8c2bb02751348ff151ad9d4756cafd74" title="returns a const reference to the crypto material used by this object">GetMaterial</a>().<a class="code" href="class_crypto_material.html#439743c6b4e89ca8228a12fa1ea43ab1" title="check this object for errors">Validate</a>(GlobalRNG(), thorough ? 3 : 2) || !priv.<a class="code" href="class_private_key_algorithm.html#59f3867165685cc6ac6be3f53d5f371b" title="returns a const reference to the crypto material used by this object">GetMaterial</a>().<a class="code" href="class_crypto_material.html#439743c6b4e89ca8228a12fa1ea43ab1" title="check this object for errors">Validate</a>(GlobalRNG(), thorough ? 3 : 2);
<a name="l00159"></a>00159         pass = pass &amp;&amp; !fail;
<a name="l00160"></a>00160 
<a name="l00161"></a>00161         cout &lt;&lt; (fail ? <span class="stringliteral">"FAILED    "</span> : <span class="stringliteral">"passed    "</span>);
<a name="l00162"></a>00162         cout &lt;&lt; <span class="stringliteral">"cryptosystem key validation\n"</span>;
<a name="l00163"></a>00163 
<a name="l00164"></a>00164         <span class="keyword">const</span> byte *message = (byte *)<span class="stringliteral">"test message"</span>;
<a name="l00165"></a>00165         <span class="keyword">const</span> <span class="keywordtype">int</span> messageLen = 12;
<a name="l00166"></a>00166         <a class="code" href="class_sec_block.html" title="a block of memory allocated using A">SecByteBlock</a> ciphertext(priv.<a class="code" href="class_p_k___crypto_system.html#bf04a4e08fb69a1a118bad3e998ef6a6" title="calculate length of ciphertext given length of plaintext">CiphertextLength</a>(messageLen));
<a name="l00167"></a>00167         <a class="code" href="class_sec_block.html" title="a block of memory allocated using A">SecByteBlock</a> plaintext(priv.<a class="code" href="class_p_k___crypto_system.html#a4a3552c933a36b3aea26f31d00bee9b" title="maximum length of plaintext for a given ciphertext length">MaxPlaintextLength</a>(ciphertext.size()));
<a name="l00168"></a>00168 
<a name="l00169"></a>00169         pub.<a class="code" href="class_p_k___encryptor.html#42361bf7692153da9437802df4064258" title="encrypt a byte string">Encrypt</a>(GlobalRNG(), message, messageLen, ciphertext);
<a name="l00170"></a>00170         fail = priv.<a class="code" href="class_p_k___decryptor.html#b7466675ed050c440c16508f8a88cac1" title="decrypt a byte string, and return the length of plaintext">Decrypt</a>(GlobalRNG(), ciphertext, priv.<a class="code" href="class_p_k___crypto_system.html#bf04a4e08fb69a1a118bad3e998ef6a6" title="calculate length of ciphertext given length of plaintext">CiphertextLength</a>(messageLen), plaintext) != <a class="code" href="struct_decoding_result.html" title="used to return decoding results">DecodingResult</a>(messageLen);
<a name="l00171"></a>00171         fail = fail || memcmp(message, plaintext, messageLen);
<a name="l00172"></a>00172         pass = pass &amp;&amp; !fail;
<a name="l00173"></a>00173 
<a name="l00174"></a>00174         cout &lt;&lt; (fail ? <span class="stringliteral">"FAILED    "</span> : <span class="stringliteral">"passed    "</span>);
<a name="l00175"></a>00175         cout &lt;&lt; <span class="stringliteral">"encryption and decryption\n"</span>;
<a name="l00176"></a>00176 
<a name="l00177"></a>00177         <span class="keywordflow">return</span> pass;
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179 
<a name="l00180"></a>00180 <span class="keywordtype">bool</span> SimpleKeyAgreementValidate(<a class="code" href="class_simple_key_agreement_domain.html" title="interface for domains of simple key agreement protocols">SimpleKeyAgreementDomain</a> &amp;d)
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182         <span class="keywordflow">if</span> (d.<a class="code" href="class_key_agreement_algorithm.html#5b0e622b88d0b8d319c23e4aefef414d">GetCryptoParameters</a>().<a class="code" href="class_crypto_material.html#439743c6b4e89ca8228a12fa1ea43ab1" title="check this object for errors">Validate</a>(GlobalRNG(), 3))
<a name="l00183"></a>00183                 cout &lt;&lt; <span class="stringliteral">"passed    simple key agreement domain parameters validation"</span> &lt;&lt; endl;
<a name="l00184"></a>00184         <span class="keywordflow">else</span>
<a name="l00185"></a>00185         {
<a name="l00186"></a>00186                 cout &lt;&lt; <span class="stringliteral">"FAILED    simple key agreement domain parameters invalid"</span> &lt;&lt; endl;
<a name="l00187"></a>00187                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00188"></a>00188         }
<a name="l00189"></a>00189 
<a name="l00190"></a>00190         <a class="code" href="class_sec_block.html" title="a block of memory allocated using A">SecByteBlock</a> priv1(d.<a class="code" href="class_simple_key_agreement_domain.html#131fa4e8260ec044fc12a540e8470325" title="return length of private keys in this domain">PrivateKeyLength</a>()), priv2(d.<a class="code" href="class_simple_key_agreement_domain.html#131fa4e8260ec044fc12a540e8470325" title="return length of private keys in this domain">PrivateKeyLength</a>());
<a name="l00191"></a>00191         <a class="code" href="class_sec_block.html" title="a block of memory allocated using A">SecByteBlock</a> pub1(d.<a class="code" href="class_simple_key_agreement_domain.html#0a96f98bb61ae0777604e035e7984bd1" title="return length of public keys in this domain">PublicKeyLength</a>()), pub2(d.<a class="code" href="class_simple_key_agreement_domain.html#0a96f98bb61ae0777604e035e7984bd1" title="return length of public keys in this domain">PublicKeyLength</a>());
<a name="l00192"></a>00192         <a class="code" href="class_sec_block.html" title="a block of memory allocated using A">SecByteBlock</a> val1(d.<a class="code" href="class_simple_key_agreement_domain.html#fbf257cf0f75e66070e2636939e9c2ca" title="return length of agreed value produced">AgreedValueLength</a>()), val2(d.<a class="code" href="class_simple_key_agreement_domain.html#fbf257cf0f75e66070e2636939e9c2ca" title="return length of agreed value produced">AgreedValueLength</a>());
<a name="l00193"></a>00193 
<a name="l00194"></a>00194         d.<a class="code" href="class_simple_key_agreement_domain.html#75629cd8157dca667c6aff0562ca59af" title="generate private/public key pair">GenerateKeyPair</a>(GlobalRNG(), priv1, pub1);
<a name="l00195"></a>00195         d.<a class="code" href="class_simple_key_agreement_domain.html#75629cd8157dca667c6aff0562ca59af" title="generate private/public key pair">GenerateKeyPair</a>(GlobalRNG(), priv2, pub2);
<a name="l00196"></a>00196 
<a name="l00197"></a>00197         memset(val1.begin(), 0x10, val1.size());
<a name="l00198"></a>00198         memset(val2.begin(), 0x11, val2.size());
<a name="l00199"></a>00199 
<a name="l00200"></a>00200         <span class="keywordflow">if</span> (!(d.<a class="code" href="class_simple_key_agreement_domain.html#732339ca730408cca7b1191fc32eb39e" title="derive agreed value from your private key and couterparty's public key, return false...">Agree</a>(val1, priv1, pub2) &amp;&amp; d.<a class="code" href="class_simple_key_agreement_domain.html#732339ca730408cca7b1191fc32eb39e" title="derive agreed value from your private key and couterparty's public key, return false...">Agree</a>(val2, priv2, pub1)))
<a name="l00201"></a>00201         {
<a name="l00202"></a>00202                 cout &lt;&lt; <span class="stringliteral">"FAILED    simple key agreement failed"</span> &lt;&lt; endl;
<a name="l00203"></a>00203                 <span class="keywordflow">return</span> <span class="keyword">false</span>;