class_d_l___verifier_impl.html

著名的密码库Crypto++的文档 C++语言的杰作。程序员必备。

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">recover a message from its signature  <a href="#05d969651d86a63d5002057113e0cab7"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="665909c10f27db81343a01c814488652"></a><!-- doxytag: member="DL_VerifierImpl::MaxSignatureLength" ref="665909c10f27db81343a01c814488652" args="(size_t recoverablePartLength=0) const" -->
virtual size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___signature_scheme.html#665909c10f27db81343a01c814488652">MaxSignatureLength</a> (size_t recoverablePartLength=0) const</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">maximum signature length produced for a given length of recoverable message part <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="8f62890f0485b9ca58528047871f8894"></a><!-- doxytag: member="DL_VerifierImpl::SignatureUpfront" ref="8f62890f0485b9ca58528047871f8894" args="() const" -->
virtual bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_k___signature_scheme.html#8f62890f0485b9ca58528047871f8894">SignatureUpfront</a> () const</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">if this function returns true, during verification you must input the signature before the message, otherwise you can input it at anytime */ <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="74b77db3086e07caf5506fda9ec204e7"></a><!-- doxytag: member="DL_VerifierImpl::AccessMaterial" ref="74b77db3086e07caf5506fda9ec204e7" args="()" -->
<a class="el" href="class_crypto_material.html">CryptoMaterial</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_public_key_algorithm.html#74b77db3086e07caf5506fda9ec204e7">AccessMaterial</a> ()</td></tr>

<tr><td class="mdescLeft">&nbsp;</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="DL_VerifierImpl::GetMaterial" ref="8c2bb02751348ff151ad9d4756cafd74" args="() const" -->
const <a class="el" href="class_crypto_material.html">CryptoMaterial</a> &amp;&nbsp;</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">&nbsp;</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="49b6c27bffc8cc588e0db37071fde9f5"></a><!-- doxytag: member="DL_VerifierImpl::GetPublicKey" ref="49b6c27bffc8cc588e0db37071fde9f5" args="() const" -->
virtual const <a class="el" href="class_public_key.html">PublicKey</a> &amp;&nbsp;</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="DL_VerifierImpl::BERDecode" ref="522dbfcd5c1a46bf1be301cec26d6534" args="(BufferedTransformation &amp;bt)" -->
void&nbsp;</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> &amp;bt)</td></tr>

<tr><td class="mdescLeft">&nbsp;</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_VerifierImpl::DEREncode" ref="2d704079890783422b0a44653480ab83" args="(BufferedTransformation &amp;bt) const " -->
void&nbsp;</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> &amp;bt) const </td></tr>

<tr><td class="mdescLeft">&nbsp;</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="d0016ba2d505c23aa85aad49e6c19bb7"></a><!-- doxytag: member="DL_VerifierImpl::Clone" ref="d0016ba2d505c23aa85aad49e6c19bb7" args="() const" -->
virtual <a class="el" href="class_clonable.html">Clonable</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_clonable.html#d0016ba2d505c23aa85aad49e6c19bb7">Clone</a> () const</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">this is not implemented by most classes yet <br></td></tr>
<tr><td colspan="2"><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4d608152f1b6ef03772d9b9616d6ab86"></a><!-- doxytag: member="DL_VerifierImpl::StaticAlgorithmName" ref="4d608152f1b6ef03772d9b9616d6ab86" args="()" -->
static std::string __cdecl&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_algorithm_impl.html#4d608152f1b6ef03772d9b9616d6ab86">StaticAlgorithmName</a> ()</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_VerifierImpl::KeyInterface" ref="fd4bfa675133a35fe8e2f5b43d0d58cf" args="" -->
typedef <a class="el" href="class_d_l___public_key.html">DL_PublicKey</a>&lt; SCHEME_OPTIONS::Element &gt;&nbsp;</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="cf9573963d02c1841b984c6ee637ae43"></a><!-- doxytag: member="DL_VerifierImpl::GetSignatureAlgorithm" ref="cf9573963d02c1841b984c6ee637ae43" args="() const" -->
const <a class="el" href="class_d_l___elgamal_like_signature_algorithm.html">DL_ElgamalLikeSignatureAlgorithm</a>&lt;<br>
 <a class="el" href="class_d_l___object_impl.html#79f28a05b245841b7295d4c119700892">Element</a> &gt; &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl.html#cf9573963d02c1841b984c6ee637ae43">GetSignatureAlgorithm</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d71f7483f1514f00962df889df9e8361"></a><!-- doxytag: member="DL_VerifierImpl::GetKeyAgreementAlgorithm" ref="d71f7483f1514f00962df889df9e8361" args="() const" -->
const <a class="el" href="class_d_l___key_agreement_algorithm.html">DL_KeyAgreementAlgorithm</a>&lt;<br>
 <a class="el" href="class_d_l___object_impl.html#79f28a05b245841b7295d4c119700892">Element</a> &gt; &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl.html#d71f7483f1514f00962df889df9e8361">GetKeyAgreementAlgorithm</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a78bba5169afc0258b500c6b15a56b4e"></a><!-- doxytag: member="DL_VerifierImpl::GetKeyDerivationAlgorithm" ref="a78bba5169afc0258b500c6b15a56b4e" args="() const" -->
const <a class="el" href="class_d_l___key_derivation_algorithm.html">DL_KeyDerivationAlgorithm</a>&lt;<br>
 <a class="el" href="class_d_l___object_impl.html#79f28a05b245841b7295d4c119700892">Element</a> &gt; &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl.html#a78bba5169afc0258b500c6b15a56b4e">GetKeyDerivationAlgorithm</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bd8005edc2dc366f87a696c76381004c"></a><!-- doxytag: member="DL_VerifierImpl::GetSymmetricEncryptionAlgorithm" ref="bd8005edc2dc366f87a696c76381004c" args="() const" -->
const <a class="el" href="class_d_l___symmetric_encryption_algorithm.html">DL_SymmetricEncryptionAlgorithm</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl.html#bd8005edc2dc366f87a696c76381004c">GetSymmetricEncryptionAlgorithm</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="dede5a769f5f4d890c372c0445b2448e"></a><!-- doxytag: member="DL_VerifierImpl::GetHashIdentifier" ref="dede5a769f5f4d890c372c0445b2448e" args="() const" -->
<a class="el" href="pubkey_8h.html#ef874ed3f2d212ac4629255c8ef86dd0">HashIdentifier</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl.html#dede5a769f5f4d890c372c0445b2448e">GetHashIdentifier</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="788a3b1b7b26840ad07316fe813c7ddf"></a><!-- doxytag: member="DL_VerifierImpl::GetMessageEncodingInterface" ref="788a3b1b7b26840ad07316fe813c7ddf" args="() const" -->
const <a class="el" href="class_p_k___signature_message_encoding_method.html">PK_SignatureMessageEncodingMethod</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl.html#788a3b1b7b26840ad07316fe813c7ddf">GetMessageEncodingInterface</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f4e61281fd0ea2b6097915d330566c00"></a><!-- doxytag: member="DL_VerifierImpl::AccessKeyInterface" ref="f4e61281fd0ea2b6097915d330566c00" args="()" -->
<a class="el" href="class_d_l___verifier_base.html">DL_VerifierBase</a>&lt; SCHEME_OPTIONS::Element <br>
&gt;::<a class="el" href="class_d_l___public_key.html">KeyInterface</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl_base.html#f4e61281fd0ea2b6097915d330566c00">AccessKeyInterface</a> ()</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="05acd52d93b09663f466dae585e42758"></a><!-- doxytag: member="DL_VerifierImpl::GetKeyInterface" ref="05acd52d93b09663f466dae585e42758" args="() const" -->
const <a class="el" href="class_d_l___verifier_base.html">DL_VerifierBase</a>&lt; SCHEME_OPTIONS::Element <br>
&gt;::<a class="el" href="class_d_l___public_key.html">KeyInterface</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl_base.html#05acd52d93b09663f466dae585e42758">GetKeyInterface</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2b5593ebad51116c9367500cb8b444c3"></a><!-- doxytag: member="DL_VerifierImpl::GetDigestSize" ref="2b5593ebad51116c9367500cb8b444c3" args="() const" -->
size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___object_impl_base.html#2b5593ebad51116c9367500cb8b444c3">GetDigestSize</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="efd5d3406eeb2d8459756e7c7f86e1c3"></a><!-- doxytag: member="DL_VerifierImpl::MessageRepresentativeLength" ref="efd5d3406eeb2d8459756e7c7f86e1c3" args="() const" -->
size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___signature_scheme_base.html#efd5d3406eeb2d8459756e7c7f86e1c3">MessageRepresentativeLength</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="81fe14febc2af07b54b81668f2a93206"></a><!-- doxytag: member="DL_VerifierImpl::MessageRepresentativeBitLength" ref="81fe14febc2af07b54b81668f2a93206" args="() const" -->
size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___signature_scheme_base.html#81fe14febc2af07b54b81668f2a93206">MessageRepresentativeBitLength</a> () const</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e54e9e0c2bad2d2816c2e21c4333e000"></a><!-- doxytag: member="DL_VerifierImpl::GetAbstractGroupParameters" ref="e54e9e0c2bad2d2816c2e21c4333e000" args="() const" -->
const <a class="el" href="class_d_l___group_parameters.html">DL_GroupParameters</a>&lt;<br>
 <a class="el" href="class_d_l___object_impl.html#79f28a05b245841b7295d4c119700892">Element</a> &gt; &amp;&nbsp;</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_VerifierImpl::AccessAbstractGroupParameters" ref="dd23b00903bac148152df88ef051724a" args="()" -->
<a class="el" href="class_d_l___group_parameters.html">DL_GroupParameters</a>&lt; <a class="el" href="class_d_l___object_impl.html#79f28a05b245841b7295d4c119700892">Element</a> &gt; &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_d_l___base.html#dd23b00903bac148152df88ef051724a">AccessAbstractGroupParameters</a> ()</td></tr>

</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="b37d4d41fcc169d71b5b3a9d1e508270"></a><!-- doxytag: member="DL_VerifierImpl::RecoverAndRestart" ref="b37d4d41fcc169d71b5b3a9d1e508270" args="(byte *recoveredMessage, PK_MessageAccumulator &amp;messageAccumulator) const " -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname"><a class="el" href="struct_decoding_result.html">DecodingResult</a> <a class="el" href="class_d_l___verifier_base.html">DL_VerifierBase</a>&lt; SCHEME_OPTIONS::Element  &gt;::RecoverAndRestart           </td>
          <td>(</td>
          <td class="paramtype">byte *&nbsp;</td>
          <td class="paramname"> <em>recoveredMessage</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="class_p_k___message_accumulator.html">PK_MessageAccumulator</a> &amp;&nbsp;</td>
          <td class="paramname"> <em>messageAccumulator</em></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td width="100%"> const<code> [inline, virtual, inherited]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>
recover a message from its signature 
<p>
<dl class="pre" compact><dt><b>Precondition:</b></dt><dd>size of recoveredMessage == MaxRecoverableLengthFromSignatureLength(signatureLength) </dd></dl>

<p>
Implements <a class="el" href="class_p_k___verifier.html#6612ff44a274594890419ae75d260cce">PK_Verifier</a>.
<p>
Definition at line <a class="el" href="pubkey_8h-source.html#l01119">1119</a> of file <a class="el" href="pubkey_8h-source.html">pubkey.h</a>.
<p>
References PK_MessageAccumulatorBase::AccessHash(), <a class="el" href="integer_8cpp-source.html#l03112">Integer::Encode()</a>, DL_GroupParameters&lt; T &gt;::GetEncodedElementSize(), <a class="el" href="pubkey_8h-source.html#l00298">PK_MessageAccumulatorBase::m_empty</a>, <a class="el" href="pubkey_8h-source.html#l00296">PK_MessageAccumulatorBase::m_presignature</a>, <a class="el" href="pubkey_8h-source.html#l00296">PK_MessageAccumulatorBase::m_recoverableMessage</a>, <a class="el" href="pubkey_8h-source.html#l00297">PK_MessageAccumulatorBase::m_s</a>, <a class="el" href="pubkey_8h-source.html#l00296">PK_MessageAccumulatorBase::m_semisignature</a>, <a class="el" href="secblock_8h-source.html#l00392">SecBlock&lt; T, A &gt;::New()</a>, <a class="el" href="pubkey_8h-source.html#l00905">DL_ElgamalLikeSignatureAlgorithm&lt; T &gt;::RecoverPresignature()</a>, and <a class="el" href="secblock_8h-source.html#l00336">SecBlock&lt; T, A &gt;::size()</a>.