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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++: TF_DecryptorBase 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>TF_DecryptorBase Class Reference</h1><!-- doxytag: class="TF_DecryptorBase" --><!-- doxytag: inherits="TF_CryptoSystemBase< PK_Decryptor, TF_Base< TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod > >" --><code>#include <<a class="el" href="pubkey_8h-source.html">pubkey.h</a>></code><p><p>Inheritance diagram for TF_DecryptorBase:<p><center><img src="class_t_f___decryptor_base.png" usemap="#TF_DecryptorBase_map" border="0" alt=""></center><map name="TF_DecryptorBase_map"><area href="class_t_f___crypto_system_base.html" alt="TF_CryptoSystemBase< PK_Decryptor, TF_Base< TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod > >" shape="rect" coords="719,336,1428,360"><area href="class_p_k___fixed_length_crypto_system_impl.html" alt="PK_FixedLengthCryptoSystemImpl< PK_Decryptor >" shape="rect" coords="359,280,1068,304"><area href="class_t_f___base.html" alt="TF_Base< TrapdoorFunctionInverse, PK_EncryptionMessageEncodingMethod >" shape="rect" coords="1078,280,1787,304"><area href="class_p_k___decryptor.html" alt="PK_Decryptor" shape="rect" coords="359,224,1068,248"><area href="class_p_k___crypto_system.html" alt="PK_CryptoSystem" shape="rect" coords="0,168,709,192"><area href="class_private_key_algorithm.html" alt="PrivateKeyAlgorithm" shape="rect" coords="719,168,1428,192"><area href="class_asymmetric_algorithm.html" alt="AsymmetricAlgorithm" shape="rect" coords="719,112,1428,136"><area href="class_algorithm.html" alt="Algorithm" shape="rect" coords="719,56,1428,80"><area href="class_clonable.html" alt="Clonable" shape="rect" coords="719,0,1428,24"><area href="class_algorithm_impl.html" alt="AlgorithmImpl< TF_DecryptorBase, SCHEME_OPTIONS::AlgorithmInfo >" shape="rect" coords="719,448,1428,472"><area href="class_t_f___object_impl_base.html" alt="TF_ObjectImplBase< TF_DecryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey >" shape="rect" coords="719,504,1428,528"><area href="class_t_f___object_impl.html" alt="TF_ObjectImpl< TF_DecryptorBase, SCHEME_OPTIONS, SCHEME_OPTIONS::PrivateKey >" shape="rect" coords="719,560,1428,584"><area href="class_t_f___decryptor_impl.html" alt="TF_DecryptorImpl< SCHEME_OPTIONS >" shape="rect" coords="719,616,1428,640"></map><a href="class_t_f___decryptor_base-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>_ <p><p>Definition at line <a class="el" href="pubkey_8h-source.html#l00166">166</a> of file <a class="el" href="pubkey_8h-source.html">pubkey.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"><a class="el" href="struct_decoding_result.html">DecodingResult</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_t_f___decryptor_base.html#f46c7592f103bcb827445e5cbce8b7f9">Decrypt</a> (<a class="el" href="class_random_number_generator.html">RandomNumberGenerator</a> &rng, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, 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">decrypt a byte string, and return the length of plaintext <a href="#f46c7592f103bcb827445e5cbce8b7f9"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_t_f___crypto_system_base.html#7e3d9b64229a0eeb41208425898c3be4">ParameterSupported</a> (const char *name) const </td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">this object supports the use of the parameter with the given name <a href="#7e3d9b64229a0eeb41208425898c3be4"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="28e8c81f06982065c479b0eb561f3e86"></a><!-- doxytag: member="TF_DecryptorBase::FixedMaxPlaintextLength" ref="28e8c81f06982065c479b0eb561f3e86" args="() const" -->size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_t_f___crypto_system_base.html#28e8c81f06982065c479b0eb561f3e86">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">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_t_f___crypto_system_base.html#91638e029e369d985f7858ad7daf2019">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="#91638e029e369d985f7858ad7daf2019"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___fixed_length_crypto_system_impl.html#a458766069b12b977e7483ab8dfbcba9">MaxPlaintextLength</a> (size_t ciphertextLength) const </td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">maximum length of plaintext for a given ciphertext length <a href="#a458766069b12b977e7483ab8dfbcba9"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___fixed_length_crypto_system_impl.html#4bdffbbeb046825f357331cbeb42956e">CiphertextLength</a> (size_t plaintextLength) const </td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">calculate length of ciphertext given length of plaintext <a href="#4bdffbbeb046825f357331cbeb42956e"></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___decryptor.html#c98bd1dac38f73bdc7d0930053ce9f56">CreateDecryptionFilter</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 decryption filter <a href="#c98bd1dac38f73bdc7d0930053ce9f56"></a><br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6cdadc344ea0cc9804fded094f7b514a"></a><!-- doxytag: member="TF_DecryptorBase::FixedLengthDecrypt" ref="6cdadc344ea0cc9804fded094f7b514a" args="(RandomNumberGenerator &rng, const byte *ciphertext, byte *plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const" --><a class="el" href="struct_decoding_result.html">DecodingResult</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___decryptor.html#6cdadc344ea0cc9804fded094f7b514a">FixedLengthDecrypt</a> (<a class="el" href="class_random_number_generator.html">RandomNumberGenerator</a> &rng, const byte *ciphertext, byte *plaintext, 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">decrypt a fixed size ciphertext <br></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="48cf4528f16263f2200d5b908a0b8ffb"></a><!-- doxytag: member="TF_DecryptorBase::AccessMaterial" ref="48cf4528f16263f2200d5b908a0b8ffb" args="()" --><a class="el" href="class_crypto_material.html">CryptoMaterial</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_private_key_algorithm.html#48cf4528f16263f2200d5b908a0b8ffb">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="59f3867165685cc6ac6be3f53d5f371b"></a><!-- doxytag: member="TF_DecryptorBase::GetMaterial" ref="59f3867165685cc6ac6be3f53d5f371b" args="() const" -->const <a class="el" href="class_crypto_material.html">CryptoMaterial</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_private_key_algorithm.html#59f3867165685cc6ac6be3f53d5f371b">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="e2085815947c2ae7b3f9f614612e0c17"></a><!-- doxytag: member="TF_DecryptorBase::AccessPrivateKey" ref="e2085815947c2ae7b3f9f614612e0c17" args="()=0" -->virtual <a class="el" href="class_private_key.html">PrivateKey</a> & </td><td class="memItemRight" valign="bottom"><b>AccessPrivateKey</b> ()=0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b36fe7af04ef624d38c0c06da5b89bb4"></a><!-- doxytag: member="TF_DecryptorBase::GetPrivateKey" ref="b36fe7af04ef624d38c0c06da5b89bb4" args="() const" -->virtual const <a class="el" href="class_private_key.html">PrivateKey</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_private_key_algorithm.html#b36fe7af04ef624d38c0c06da5b89bb4">GetPrivateKey</a> () const</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="522dbfcd5c1a46bf1be301cec26d6534"></a><!-- doxytag: member="TF_DecryptorBase::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="TF_DecryptorBase::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="TF_DecryptorBase::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="TF_DecryptorBase::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>Protected Types</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="33e2d6c0fbb715a5255edd5e84a849fb"></a><!-- doxytag: member="TF_DecryptorBase::TrapdoorFunctionInterface" ref="33e2d6c0fbb715a5255edd5e84a849fb" args="" -->typedef <a class="el" href="class_trapdoor_function_inverse.html">TrapdoorFunctionInverse</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_t_f___base.html#33e2d6c0fbb715a5255edd5e84a849fb">TrapdoorFunctionInterface</a></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="06b4d20aa32c616a1d0d2b8bee909436"></a><!-- doxytag: member="TF_DecryptorBase::MessageEncodingInterface" ref="06b4d20aa32c616a1d0d2b8bee909436" args="" -->typedef <a class="el" href="class_p_k___encryption_message_encoding_method.html">PK_EncryptionMessageEncodingMethod</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_t_f___base.html#06b4d20aa32c616a1d0d2b8bee909436">MessageEncodingInterface</a></td></tr><tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5ad757b5d844b247b0f40969ab5d5957"></a><!-- doxytag: member="TF_DecryptorBase::PaddedBlockByteLength" ref="5ad757b5d844b247b0f40969ab5d5957" args="() const" -->size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_t_f___crypto_system_base.html#5ad757b5d844b247b0f40969ab5d5957">PaddedBlockByteLength</a> () const</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bb04a40679e4c4ec5a0eb00b85615d56"></a><!-- doxytag: member="TF_DecryptorBase::PaddedBlockBitLength" ref="bb04a40679e4c4ec5a0eb00b85615d56" args="() const" -->size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="class_t_f___crypto_system_base.html#bb04a40679e4c4ec5a0eb00b85615d56">PaddedBlockBitLength</a> () const</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b7cdeb63521fb42737756cf16e1183e9"></a><!-- doxytag: member="TF_DecryptorBase::GetTrapdoorFunctionBounds" ref="b7cdeb63521fb42737756cf16e1183e9" args="() const=0" -->virtual const <a class="el" href="class_trapdoor_function_bounds.html">TrapdoorFunctionBounds</a> & </td><td class="memItemRight" valign="bottom"><b>GetTrapdoorFunctionBounds</b> () const=0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="52e9ac3bbe69013a79e90470b0eacd08"></a><!-- doxytag: member="TF_DecryptorBase::GetTrapdoorFunctionInterface" ref="52e9ac3bbe69013a79e90470b0eacd08" args="() const=0" -->virtual const <a class="el" href="class_trapdoor_function_inverse.html">TrapdoorFunctionInterface</a> & </td><td class="memItemRight" valign="bottom"><b>GetTrapdoorFunctionInterface</b> () const=0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ddd4e8a4dfb171105048c6eaf67ce337"></a><!-- doxytag: member="TF_DecryptorBase::GetMessageEncodingInterface" ref="ddd4e8a4dfb171105048c6eaf67ce337" args="() const=0" -->virtual const <a class="el" href="class_p_k___encryption_message_encoding_method.html">MessageEncodingInterface</a> & </td><td class="memItemRight" valign="bottom"><b>GetMessageEncodingInterface</b> () const=0</td></tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="f46c7592f103bcb827445e5cbce8b7f9"></a><!-- doxytag: member="TF_DecryptorBase::Decrypt" ref="f46c7592f103bcb827445e5cbce8b7f9" args="(RandomNumberGenerator &rng, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const " --><div class="memitem"><div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="struct_decoding_result.html">DecodingResult</a> TF_DecryptorBase::Decrypt </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>ciphertext</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">size_t </td> <td class="paramname"> <em>ciphertextLength</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">byte * </td> <td class="paramname"> <em>plaintext</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>⌨️ 快捷键说明
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