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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++: PK_Encryptor Class Reference</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 class="current"><a href="classes.html"><span>Classes</span></a></li> <li><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="classes.html"><span>Alphabetical List</span></a></li> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul></div><h1>PK_Encryptor Class Reference</h1><!-- doxytag: class="PK_Encryptor" --><!-- doxytag: inherits="PK_CryptoSystem,PublicKeyAlgorithm" --><code>#include <<a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>></code><p><p>Inheritance diagram for PK_Encryptor:<p><center><img src="class_p_k___encryptor.png" usemap="#PK_Encryptor_map" border="0" alt=""></center><map name="PK_Encryptor_map"><area href="class_p_k___crypto_system.html" alt="PK_CryptoSystem" shape="rect" coords="381,168,1134,192"><area href="class_public_key_algorithm.html" alt="PublicKeyAlgorithm" shape="rect" coords="1144,168,1897,192"><area href="class_asymmetric_algorithm.html" alt="AsymmetricAlgorithm" shape="rect" coords="1144,112,1897,136"><area href="class_algorithm.html" alt="Algorithm" shape="rect" coords="1144,56,1897,80"><area href="class_clonable.html" alt="Clonable" shape="rect" coords="1144,0,1897,24"><area href="class_d_l___crypto_system_base.html" alt="DL_CryptoSystemBase< PK_Encryptor, DL_PublicKey< SCHEME_OPTIONS::Element > >" shape="rect" coords="0,280,753,304"><area href="class_d_l___crypto_system_base.html" alt="DL_CryptoSystemBase< PK_Encryptor, DL_PublicKey< T > >" shape="rect" coords="763,280,1516,304"><area href="class_p_k___fixed_length_crypto_system_impl.html" alt="PK_FixedLengthCryptoSystemImpl< PK_Encryptor >" shape="rect" coords="1526,280,2279,304"><area href="class_d_l___encryptor_base.html" alt="DL_EncryptorBase< SCHEME_OPTIONS::Element >" shape="rect" coords="0,336,753,360"><area href="class_d_l___encryptor_base.html" alt="DL_EncryptorBase< T >" shape="rect" coords="763,336,1516,360"><area href="class_t_f___crypto_system_base.html" alt="TF_CryptoSystemBase< PK_Encryptor, TF_Base< RandomizedTrapdoorFunction, PK_EncryptionMessageEncodingMethod > >" shape="rect" coords="1526,336,2279,360"><area href="class_algorithm_impl.html" alt="AlgorithmImpl< DL_EncryptorBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS::AlgorithmInfo >" shape="rect" coords="0,392,753,416"><area href="class_t_f___encryptor_base.html" alt="TF_EncryptorBase" shape="rect" coords="1526,392,2279,416"><area href="class_d_l___object_impl_base.html" alt="DL_ObjectImplBase< DL_EncryptorBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey >" shape="rect" coords="0,448,753,472"><area href="class_algorithm_impl.html" alt="AlgorithmImpl< TF_EncryptorBase, SCHEME_OPTIONS::AlgorithmInfo >" shape="rect" coords="1526,448,2279,472"><area href="class_d_l___object_impl.html" alt="DL_ObjectImpl< DL_EncryptorBase< SCHEME_OPTIONS::Element >, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey >" shape="rect" coords="0,504,753,528"><area href="class_t_f___object_impl_base.html" alt="TF_ObjectImplBase< TF_EncryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey >" shape="rect" coords="1526,504,2279,528"><area href="class_d_l___encryptor_impl.html" alt="DL_EncryptorImpl< SCHEME_OPTIONS >" shape="rect" coords="0,560,753,584"><area href="class_t_f___object_impl.html" alt="TF_ObjectImpl< TF_EncryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey >" shape="rect" coords="1526,560,2279,584"><area href="class_t_f___encryptor_impl.html" alt="TF_EncryptorImpl< SCHEME_OPTIONS >" shape="rect" coords="1526,616,2279,640"></map><a href="class_p_k___encryptor-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>interface for public-key encryptors <p><p>Definition at line <a class="el" href="cryptlib_8h-source.html#l01177">1177</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.<table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr><tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___encryptor.html#42361bf7692153da9437802df4064258">Encrypt</a> (<a class="el" href="class_random_number_generator.html">RandomNumberGenerator</a> &rng, const byte *plaintext, size_t plaintextLength, byte *ciphertext, const <a class="el" href="class_name_value_pairs.html">NameValuePairs</a> &parameters=<a class="el" href="cryptlib_8h.html#d3205973dd1afa14090a683154c1109c">g_nullNameValuePairs</a>) const=0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">encrypt a byte string <a href="#42361bf7692153da9437802df4064258"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___encryptor.html#558cc0f957c7e1e448a746033549964d">CreateEncryptionFilter</a> (<a class="el" href="class_random_number_generator.html">RandomNumberGenerator</a> &rng, <a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL, const <a class="el" href="class_name_value_pairs.html">NameValuePairs</a> &parameters=<a class="el" href="cryptlib_8h.html#d3205973dd1afa14090a683154c1109c">g_nullNameValuePairs</a>) const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">create a new encryption filter <a href="#558cc0f957c7e1e448a746033549964d"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___crypto_system.html#a4a3552c933a36b3aea26f31d00bee9b">MaxPlaintextLength</a> (size_t ciphertextLength) const =0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">maximum length of plaintext for a given ciphertext length <a href="#a4a3552c933a36b3aea26f31d00bee9b"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___crypto_system.html#bf04a4e08fb69a1a118bad3e998ef6a6">CiphertextLength</a> (size_t plaintextLength) const =0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">calculate length of ciphertext given length of plaintext <a href="#bf04a4e08fb69a1a118bad3e998ef6a6"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___crypto_system.html#294c4664af51a72112db1f04e6ef9049">ParameterSupported</a> (const char *name) const =0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">this object supports the use of the parameter with the given name <a href="#294c4664af51a72112db1f04e6ef9049"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___crypto_system.html#f415eacc974d297a03c4e7de710e5b4e">FixedCiphertextLength</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">return fixed ciphertext length, if one exists, otherwise return 0 <a href="#f415eacc974d297a03c4e7de710e5b4e"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="785f1a7390552faf18f9f91c6bc00429"></a><!-- doxytag: member="PK_Encryptor::FixedMaxPlaintextLength" ref="785f1a7390552faf18f9f91c6bc00429" args="() const" -->virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___crypto_system.html#785f1a7390552faf18f9f91c6bc00429">FixedMaxPlaintextLength</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">return maximum plaintext length given the fixed ciphertext length, if one exists, otherwise return 0 <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="74b77db3086e07caf5506fda9ec204e7"></a><!-- doxytag: member="PK_Encryptor::AccessMaterial" ref="74b77db3086e07caf5506fda9ec204e7" args="()" --><a class="el" href="class_crypto_material.html">CryptoMaterial</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_public_key_algorithm.html#74b77db3086e07caf5506fda9ec204e7">AccessMaterial</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns a reference to the crypto material used by this object <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="8c2bb02751348ff151ad9d4756cafd74"></a><!-- doxytag: member="PK_Encryptor::GetMaterial" ref="8c2bb02751348ff151ad9d4756cafd74" args="() const" -->const <a class="el" href="class_crypto_material.html">CryptoMaterial</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_public_key_algorithm.html#8c2bb02751348ff151ad9d4756cafd74">GetMaterial</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns a const reference to the crypto material used by this object <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="47cd0fed475280962ab6337c6c57c882"></a><!-- doxytag: member="PK_Encryptor::AccessPublicKey" ref="47cd0fed475280962ab6337c6c57c882" args="()=0" -->virtual <a class="el" href="class_public_key.html">PublicKey</a> & </td><td class="memItemRight" valign="bottom"><b>AccessPublicKey</b> ()=0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="49b6c27bffc8cc588e0db37071fde9f5"></a><!-- doxytag: member="PK_Encryptor::GetPublicKey" ref="49b6c27bffc8cc588e0db37071fde9f5" args="() const" -->virtual const <a class="el" href="class_public_key.html">PublicKey</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_public_key_algorithm.html#49b6c27bffc8cc588e0db37071fde9f5">GetPublicKey</a> () const</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="522dbfcd5c1a46bf1be301cec26d6534"></a><!-- doxytag: member="PK_Encryptor::BERDecode" ref="522dbfcd5c1a46bf1be301cec26d6534" args="(BufferedTransformation &bt)" -->void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_asymmetric_algorithm.html#522dbfcd5c1a46bf1be301cec26d6534">BERDecode</a> (<a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> &bt)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">for backwards compatibility, calls <a class="el" href="class_asymmetric_algorithm.html#d99d55413166b69a0a12e10d111926c8" title="returns a reference to the crypto material used by this object">AccessMaterial()</a>.Load(bt) <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2d704079890783422b0a44653480ab83"></a><!-- doxytag: member="PK_Encryptor::DEREncode" ref="2d704079890783422b0a44653480ab83" args="(BufferedTransformation &bt) const " -->void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_asymmetric_algorithm.html#2d704079890783422b0a44653480ab83">DEREncode</a> (<a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> &bt) const </td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">for backwards compatibility, calls <a class="el" href="class_asymmetric_algorithm.html#eafe2b12d8353b6c639be41b57ef25de" title="returns a const reference to the crypto material used by this object">GetMaterial()</a>.Save(bt) <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4f31510a192d1121856efe8ad0a9b844"></a><!-- doxytag: member="PK_Encryptor::AlgorithmName" ref="4f31510a192d1121856efe8ad0a9b844" args="() const" -->virtual std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="class_algorithm.html#4f31510a192d1121856efe8ad0a9b844">AlgorithmName</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns name of this algorithm, not universally implemented yet <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d0016ba2d505c23aa85aad49e6c19bb7"></a><!-- doxytag: member="PK_Encryptor::Clone" ref="d0016ba2d505c23aa85aad49e6c19bb7" args="() const" -->virtual <a class="el" href="class_clonable.html">Clonable</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_clonable.html#d0016ba2d505c23aa85aad49e6c19bb7">Clone</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">this is not implemented by most classes yet <br></td></tr><tr><td colspan="2"><br><h2>Classes</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">class </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___encryptor_1_1_invalid_plaintext_length.html">InvalidPlaintextLength</a></td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">exception thrown when trying to encrypt plaintext of invalid length <a href="class_p_k___encryptor_1_1_invalid_plaintext_length.html#_details">More...</a><br></td></tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="42361bf7692153da9437802df4064258"></a><!-- doxytag: member="PK_Encryptor::Encrypt" ref="42361bf7692153da9437802df4064258" args="(RandomNumberGenerator &rng, const byte *plaintext, size_t plaintextLength, byte *ciphertext, const NameValuePairs &parameters=g_nullNameValuePairs) const=0" --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname">virtual void PK_Encryptor::Encrypt </td> <td>(</td> <td class="paramtype"><a class="el" href="class_random_number_generator.html">RandomNumberGenerator</a> & </td> <td class="paramname"> <em>rng</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const byte * </td> <td class="paramname"> <em>plaintext</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">size_t </td> <td class="paramname"> <em>plaintextLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">byte * </td> <td class="paramname"> <em>ciphertext</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="class_name_value_pairs.html">NameValuePairs</a> & </td> <td class="paramname"> <em>parameters</em> = <code><a class="el" href="cryptlib_8h.html#d3205973dd1afa14090a683154c1109c">g_nullNameValuePairs</a></code></td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td width="100%"> const<code> [pure virtual]</code></td> </tr> </table></div><div class="memdoc"><p>encrypt a byte string ⌨️ 快捷键说明
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