class_hash_transformation.html

Crypto++是一个非常强大的密码学库,主要是功能全

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">this is not implemented by most classes yet <br><br></td></tr>
<tr><td colspan=2><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="_x_m_a_c_c___baseb7" doxytag="HashTransformation::ThrowIfInvalidTruncatedSize"></a>
void&nbsp;</td><td class="memItemRight" valign=bottom><b>ThrowIfInvalidTruncatedSize</b> (unsigned int size) const</td></tr>

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<hr><h2>Member Function Documentation</h2>
<a name="_x_m_a_c_c___basea13" doxytag="HashTransformation::Final"></a><p>
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          <td class="md" nowrap valign="top"> virtual void HashTransformation::Final </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">byte *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>digest</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [inline, virtual]</code></td>
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compute hash for current message, then restart for a new message 
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<dl compact><dt><b>Precondition:</b></dt><dd>size of digest == <a class="el" href="class_hash_transformation.html#_x_m_a_c_ca9">DigestSize()</a>. </dd></dl>

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Reimplemented in <a class="el" href="class_p_k_c_s___decorated_hash_module.html#_p_k_c_s___decorated_hash_modulea2">PKCS_DecoratedHashModule&lt; H &gt;</a>, <a class="el" href="class_signature_encoding_method_with_recovery.html#_signature_encoding_method_with_recoverya0">SignatureEncodingMethodWithRecovery</a>, and <a class="el" href="class_e_m_s_a2_decorated_hash_module.html#_e_m_s_a2_decorated_hash_modulea3">EMSA2DecoratedHashModule&lt; H &gt;</a>.
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Definition at line <a class="el" href="cryptlib_8h-source.html#l00526">526</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.
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Referenced by <a class="el" href="filters_8cpp-source.html#l00635">HashFilter::Put2()</a>, <a class="el" href="pubkey_8h-source.html#l00439">PK_SignerBase&lt; H &gt;::SignAndRestart()</a>, and <a class="el" href="pubkey_8h-source.html#l00449">PK_VerifierBase&lt; H &gt;::VerifyAndRestart()</a>.    </td>
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<a name="_x_m_a_c_c___basea15" doxytag="HashTransformation::Verify"></a><p>
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          <td class="md" nowrap valign="top"> virtual bool HashTransformation::Verify </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const byte *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>digest</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [inline, virtual]</code></td>
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<p>
verify that digest is a valid digest for the current message, then reinitialize the object 
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Default implementation is to call <a class="el" href="class_hash_transformation.html#_x_m_a_c_c___basea13">Final()</a> and do a bitwise comparison between its output and digest. 
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Reimplemented in <a class="el" href="class_signature_encoding_method_with_recovery.html#_signature_encoding_method_with_recoverya2">SignatureEncodingMethodWithRecovery</a>.
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Definition at line <a class="el" href="cryptlib_8h-source.html#l00549">549</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.
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Referenced by <a class="el" href="pubkey_8h-source.html#l00587">VerifierWithRecoveryTemplate&lt; TF, H &gt;::VerifyAndRestart()</a>.    </td>
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<hr>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="cryptlib_8h-source.html">cryptlib.h</a><li><a class="el" href="cryptlib_8cpp-source.html">cryptlib.cpp</a></ul>
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