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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++: DL_DecryptorBase< T > Class Template 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>DL_DecryptorBase< T > Class Template Reference</h1><!-- doxytag: class="DL_DecryptorBase" --><!-- doxytag: inherits="DL_CryptoSystemBase< PK_Decryptor, DL_PrivateKey< T > >" --><code>#include <<a class="el" href="pubkey_8h-source.html">pubkey.h</a>></code><p><p>Inheritance diagram for DL_DecryptorBase< T >:<p><center><img src="class_d_l___decryptor_base.png" usemap="#DL_DecryptorBase< T >_map" border="0" alt=""></center><map name="DL_DecryptorBase< T >_map"><area href="class_d_l___crypto_system_base.html" alt="DL_CryptoSystemBase< PK_Decryptor, DL_PrivateKey< T > >" shape="rect" coords="380,280,750,304"><area href="class_p_k___decryptor.html" alt="PK_Decryptor" shape="rect" coords="190,224,560,248"><area href="class_d_l___base.html" alt="DL_Base< DL_PrivateKey< T > >" shape="rect" coords="570,224,940,248"><area href="class_p_k___crypto_system.html" alt="PK_CryptoSystem" shape="rect" coords="0,168,370,192"><area href="class_private_key_algorithm.html" alt="PrivateKeyAlgorithm" shape="rect" coords="380,168,750,192"><area href="class_asymmetric_algorithm.html" alt="AsymmetricAlgorithm" shape="rect" coords="380,112,750,136"><area href="class_algorithm.html" alt="Algorithm" shape="rect" coords="380,56,750,80"><area href="class_clonable.html" alt="Clonable" shape="rect" coords="380,0,750,24"></map><a href="class_d_l___decryptor_base-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2><h3>template<class T><br> class DL_DecryptorBase< T ></h3>_ <p><p>Definition at line <a class="el" href="pubkey_8h-source.html#l01179">1179</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 Types</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="8ff27bdbc35dc6c0cb3c42b8512749e0"></a><!-- doxytag: member="DL_DecryptorBase::Element" ref="8ff27bdbc35dc6c0cb3c42b8512749e0" args="" -->typedef T </td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___decryptor_base.html#8ff27bdbc35dc6c0cb3c42b8512749e0">Element</a></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_d_l___decryptor_base.html#5a23bde8893b76023182413d24f75b74">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="#5a23bde8893b76023182413d24f75b74"></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_d_l___crypto_system_base.html#3deffe3347f225eb0483c7bf3bedc495">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="#3deffe3347f225eb0483c7bf3bedc495"></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_d_l___crypto_system_base.html#c738aee0b0262899ad33379da8798c6a">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="#c738aee0b0262899ad33379da8798c6a"></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_d_l___crypto_system_base.html#c510f55af473e85547237fdb39e441e1">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="#c510f55af473e85547237fdb39e441e1"></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="DL_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">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="DL_DecryptorBase::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="48cf4528f16263f2200d5b908a0b8ffb"></a><!-- doxytag: member="DL_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="DL_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="DL_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="DL_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="DL_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="DL_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="DL_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="DL_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="fd4bfa675133a35fe8e2f5b43d0d58cf"></a><!-- doxytag: member="DL_DecryptorBase::KeyInterface" ref="fd4bfa675133a35fe8e2f5b43d0d58cf" args="" -->typedef <a class="el" href="class_d_l___private_key.html">DL_PrivateKey</a>< T > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___base.html#fd4bfa675133a35fe8e2f5b43d0d58cf">KeyInterface</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="67b74a76f8ab1f1ae6c30f5b059cff33"></a><!-- doxytag: member="DL_DecryptorBase::GetKeyAgreementAlgorithm" ref="67b74a76f8ab1f1ae6c30f5b059cff33" args="() const=0" -->virtual const <a class="el" href="class_d_l___key_agreement_algorithm.html">DL_KeyAgreementAlgorithm</a><<br> <a class="el" href="class_d_l___decryptor_base.html#8ff27bdbc35dc6c0cb3c42b8512749e0">Element</a> > & </td><td class="memItemRight" valign="bottom"><b>GetKeyAgreementAlgorithm</b> () const=0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e2940e5d6e438d6efb319705bcc23b9c"></a><!-- doxytag: member="DL_DecryptorBase::GetKeyDerivationAlgorithm" ref="e2940e5d6e438d6efb319705bcc23b9c" args="() const=0" -->virtual const <a class="el" href="class_d_l___key_derivation_algorithm.html">DL_KeyDerivationAlgorithm</a><<br> <a class="el" href="class_d_l___decryptor_base.html#8ff27bdbc35dc6c0cb3c42b8512749e0">Element</a> > & </td><td class="memItemRight" valign="bottom"><b>GetKeyDerivationAlgorithm</b> () const=0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="da97e6669ec9bf3f06eadf963575663f"></a><!-- doxytag: member="DL_DecryptorBase::GetSymmetricEncryptionAlgorithm" ref="da97e6669ec9bf3f06eadf963575663f" args="() const=0" -->virtual const <a class="el" href="class_d_l___symmetric_encryption_algorithm.html">DL_SymmetricEncryptionAlgorithm</a> & </td><td class="memItemRight" valign="bottom"><b>GetSymmetricEncryptionAlgorithm</b> () const=0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e54e9e0c2bad2d2816c2e21c4333e000"></a><!-- doxytag: member="DL_DecryptorBase::GetAbstractGroupParameters" ref="e54e9e0c2bad2d2816c2e21c4333e000" args="() const" -->const <a class="el" href="class_d_l___group_parameters.html">DL_GroupParameters</a><<br> <a class="el" href="class_d_l___decryptor_base.html#8ff27bdbc35dc6c0cb3c42b8512749e0">Element</a> > & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___base.html#e54e9e0c2bad2d2816c2e21c4333e000">GetAbstractGroupParameters</a> () const</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="dd23b00903bac148152df88ef051724a"></a><!-- doxytag: member="DL_DecryptorBase::AccessAbstractGroupParameters" ref="dd23b00903bac148152df88ef051724a" args="()" --><a class="el" href="class_d_l___group_parameters.html">DL_GroupParameters</a>< <a class="el" href="class_d_l___decryptor_base.html#8ff27bdbc35dc6c0cb3c42b8512749e0">Element</a> > & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___base.html#dd23b00903bac148152df88ef051724a">AccessAbstractGroupParameters</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="58c8d9ca0c480441d4b3548c9e0ddb94"></a><!-- doxytag: member="DL_DecryptorBase::AccessKeyInterface" ref="58c8d9ca0c480441d4b3548c9e0ddb94" args="()=0" -->virtual <a class="el" href="class_d_l___private_key.html">KeyInterface</a> & </td><td class="memItemRight" valign="bottom"><b>AccessKeyInterface</b> ()=0</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="595195b30c9916adbc0d64c352cf70d3"></a><!-- doxytag: member="DL_DecryptorBase::GetKeyInterface" ref="595195b30c9916adbc0d64c352cf70d3" args="() const=0" -->virtual const <a class="el" href="class_d_l___private_key.html">KeyInterface</a> & </td><td class="memItemRight" valign="bottom"><b>GetKeyInterface</b> () const=0</td></tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="5a23bde8893b76023182413d24f75b74"></a><!-- doxytag: member="DL_DecryptorBase::Decrypt" ref="5a23bde8893b76023182413d24f75b74" args="(RandomNumberGenerator &rng, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs &parameters=g_nullNameValuePairs) const " --><div class="memitem"><div class="memproto"><div class="memtemplate">template<class T> </div> <table class="memname"> <tr> <td class="memname"><a class="el" href="struct_decoding_result.html">DecodingResult</a> <a class="el" href="class_d_l___decryptor_base.html">DL_DecryptorBase</a>< T >::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>⌨️ 快捷键说明
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