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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Crypto++: PK_FixedLengthEncryptor class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.3.2 --><div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Compound List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="namespacemembers.html">Namespace Members</a> | <a class="qindex" href="functions.html">Compound Members</a> | <a class="qindex" href="globals.html">File Members</a></div><h1>PK_FixedLengthEncryptor Class Reference</h1><code>#include <<a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>></code><p><p>Inheritance diagram for PK_FixedLengthEncryptor:<p><center><img src="class_p_k___fixed_length_encryptor.png" usemap="#PK_FixedLengthEncryptor_map" border="0" alt=""></center><map name="PK_FixedLengthEncryptor_map"><area href="class_p_k___encryptor.html" alt="PK_Encryptor" shape="rect" coords="370,224,1100,248"><area href="class_p_k___fixed_length_crypto_system.html" alt="PK_FixedLengthCryptoSystem" shape="rect" coords="1480,224,2210,248"><area href="class_p_k___crypto_system.html" alt="PK_CryptoSystem" shape="rect" coords="0,168,730,192"><area href="class_public_key_algorithm.html" alt="PublicKeyAlgorithm" shape="rect" coords="740,168,1470,192"><area href="class_p_k___crypto_system.html" alt="PK_CryptoSystem" shape="rect" coords="1480,168,2210,192"><area href="class_asymmetric_algorithm.html" alt="AsymmetricAlgorithm" shape="rect" coords="740,112,1470,136"><area href="class_algorithm.html" alt="Algorithm" shape="rect" coords="740,56,1470,80"><area href="class_clonable.html" alt="Clonable" shape="rect" coords="740,0,1470,24"><area href="class_d_l___crypto_system_base.html" alt="DL_CryptoSystemBase< PK_FixedLengthEncryptor, DL_PublicKey< Integer > >" shape="rect" coords="555,336,1285,360"><area href="class_t_f___crypto_system_base.html" alt="TF_CryptoSystemBase< PK_FixedLengthEncryptor, TF_Base< RandomizedTrapdoorFunction > >" shape="rect" coords="1295,336,2025,360"><area href="class_d_l___encryptor_base.html" alt="DL_EncryptorBase< Integer, PK_FixedLengthEncryptor >" shape="rect" coords="555,392,1285,416"><area href="class_t_f___encryptor_base.html" alt="TF_EncryptorBase" shape="rect" coords="1295,392,2025,416"><area href="class_d_l___object_impl_base.html" alt="DL_ObjectImplBase< DL_EncryptorBase< Integer, PK_FixedLengthEncryptor >, SchemeOptions, SchemeOptions::PublicKey >" shape="rect" coords="555,504,1285,528"><area href="class_t_f___object_impl_base.html" alt="TF_ObjectImplBase< TF_EncryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey >" shape="rect" coords="1295,504,2025,528"><area href="class_t_f___object_impl.html" alt="TF_ObjectImpl< TF_EncryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PublicKey >" shape="rect" coords="1295,560,2025,584"><area href="class_t_f___public_object_impl.html" alt="TF_PublicObjectImpl< TF_EncryptorBase, SCHEME_OPTIONS >" shape="rect" coords="1295,616,2025,640"><area href="class_t_f___encryptor_impl.html" alt="TF_EncryptorImpl< SCHEME_OPTIONS >" shape="rect" coords="1295,672,2025,696"></map><a href="class_p_k___fixed_length_encryptor-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>interface for encryptors with fixed length ciphertext <p><p>Definition at line <a class="el" href="cryptlib_8h-source.html#l01188">1188</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___fixed_length_encryptor.html#_t_f___crypto_system_base_3_01_p_k___fixed_length_encryptor_00_01_t_f___base_3_01_randomized_trapdoor_function_01_4_01_4a2">Encrypt</a> (<a class="el" href="class_random_number_generator.html">RandomNumberGenerator</a> &rng, const byte *plainText, unsigned int plainTextLength, byte *cipherText) const=0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">encrypt a byte string </em> <a href="#_t_f___crypto_system_base_3_01_p_k___fixed_length_encryptor_00_01_t_f___base_3_01_randomized_trapdoor_function_01_4_01_4a2"></a><em><br><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___fixed_length_encryptor.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a12">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</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">create a new encryption filter </em> <a href="#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a12"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a13">MaxPlaintextLength</a> (unsigned int cipherTextLength) const=0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">maximum length of plaintext for a given ciphertext length </em> <a href="#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a13"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a15">CiphertextLength</a> (unsigned int plainTextLength) const=0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">calculate length of ciphertext given length of plaintext </em> <a href="#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a15"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_verifier_with_recovery_templatea19" doxytag="PK_FixedLengthEncryptor::AccessMaterial"></a><a class="el" href="class_crypto_material.html">CryptoMaterial</a> & </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_verifier_with_recovery_templatea19">AccessMaterial</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns a reference to the crypto material used by this object <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_verifier_with_recovery_templatea20" doxytag="PK_FixedLengthEncryptor::GetMaterial"></a>const <a class="el" href="class_crypto_material.html">CryptoMaterial</a> & </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_verifier_with_recovery_templatea20">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><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_t_f___encryptor_basea10" doxytag="PK_FixedLengthEncryptor::AccessPublicKey"></a>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 name="_verifier_with_recovery_templatea21" doxytag="PK_FixedLengthEncryptor::GetPublicKey"></a>virtual const <a class="el" href="class_public_key.html">PublicKey</a> & </td><td class="memItemRight" valign=bottom><b>GetPublicKey</b> () const</td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_x_t_r___d_ha24" doxytag="PK_FixedLengthEncryptor::BERDecode"></a>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_x_t_r___d_ha24">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#_asymmetric_algorithma0">AccessMaterial()</a>.Load(bt) <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_verifier_with_recovery_templatea23" doxytag="PK_FixedLengthEncryptor::DEREncode"></a>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_verifier_with_recovery_templatea23">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#_asymmetric_algorithma1">GetMaterial()</a>.Save(bt) <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_zlib_decompressora17" doxytag="PK_FixedLengthEncryptor::AlgorithmName"></a>virtual std::string </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_zlib_decompressora17">AlgorithmName</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns name of this algorithm, not universally implemented yet <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_zlib_decompressora18" doxytag="PK_FixedLengthEncryptor::Clone"></a>virtual <a class="el" href="class_clonable.html">Clonable</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_zlib_decompressora18">Clone</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">this is not implemented by most classes yet <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_p_k___fixed_length_encryptora12" doxytag="PK_FixedLengthEncryptor::FixedMaxPlaintextLength"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><b>FixedMaxPlaintextLength</b> () const=0</td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_p_k___fixed_length_encryptora13" doxytag="PK_FixedLengthEncryptor::FixedCiphertextLength"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><b>FixedCiphertextLength</b> () const=0</td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a14">MaxPlaintextLength</a> (unsigned int cipherTextLength) const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">maximum length of plaintext for a given ciphertext length </em> <a href="#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a14"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_p_k___fixed_length_encryptor.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a16">CiphertextLength</a> (unsigned int plainTextLength) const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">calculate length of ciphertext given length of plaintext </em> <a href="#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a16"></a><em><br><br></td></tr></table><hr><h2>Member Function Documentation</h2><a name="_t_f___crypto_system_base_3_01_p_k___fixed_length_encryptor_00_01_t_f___base_3_01_randomized_trapdoor_function_01_4_01_4a2" doxytag="PK_FixedLengthEncryptor::Encrypt"></a><p><table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> virtual void PK_Encryptor::Encrypt </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top"><a class="el" href="class_random_number_generator.html">RandomNumberGenerator</a> & </td> <td class="mdname" nowrap> <em>rng</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>const byte * </td> <td class="mdname" nowrap> <em>plainText</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>unsigned int </td> <td class="mdname" nowrap> <em>plainTextLength</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>byte * </td> <td class="mdname" nowrap> <em>cipherText</em></td> </tr> <tr> <td></td> <td class="md">) </td> <td class="md" colspan="2"> const<code> [pure virtual, inherited]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>encrypt a byte string <p><dl compact><dt><b>Precondition:</b></dt><dd>CipherTextLength(plainTextLength) != 0 (i.e., plainText isn't too long) <p>size of cipherText == CipherTextLength(plainTextLength)</dd></dl><p>Implemented in <a class="el" href="class_t_f___encryptor_base.html#_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a9">TF_EncryptorBase</a>. </td> </tr></table><a name="_t_f___public_object_impl_3_01_t_f___encryptor_base_00_01_s_c_h_e_m_e___o_p_t_i_o_n_s_01_4a12" doxytag="PK_FixedLengthEncryptor::CreateEncryptionFilter"></a><p><table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> <a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> * PK_Encryptor::CreateEncryptionFilter </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top"><a class="el" href="class_random_number_generator.html">RandomNumberGenerator</a> & </td> <td class="mdname" nowrap> <em>rng</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap><a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> * </td> <td class="mdname" nowrap> <em>attachment</em> = NULL</td> </tr> <tr> <td></td> <td class="md">) </td> <td class="md" colspan="2"> const<code> [virtual, inherited]</code></td>⌨️ 快捷键说明
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