class_symmetric_cipher.html

Crypto++是一个非常强大的密码学库,主要是功能全

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virtual void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="class_symmetric_cipher.html#_x_m_a_c_ca33">Resynchronize</a> (const byte *IV)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">resynchronize with an IV <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="class_symmetric_cipher.html#_x_m_a_c_ca34">GetNextIV</a> (byte *IV)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">get a secure IV for the next message </em> <a href="#_x_m_a_c_ca34"></a><em><br><br></td></tr>
<tr><td colspan=2><br><h2>Protected Member Functions</h2></td></tr>
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void&nbsp;</td><td class="memItemRight" valign=bottom><b>ThrowIfInvalidKeyLength</b> (const <a class="el" href="class_algorithm.html">Algorithm</a> &amp;algorithm, unsigned int length)</td></tr>

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void&nbsp;</td><td class="memItemRight" valign=bottom><b>AssertValidKeyLength</b> (unsigned int length) const</td></tr>

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<hr><h2>Member Function Documentation</h2>
<a name="_symmetric_ciphera0" doxytag="SymmetricCipher::Ref"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="class_stream_transformation.html">StreamTransformation</a>&amp; StreamTransformation::Ref </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap><code> [inline, inherited]</code></td>
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return a reference to this object, 
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This function is useful for passing a temporary <a class="el" href="class_stream_transformation.html">StreamTransformation</a> object to a function that takes a non-const reference. 
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Definition at line <a class="el" href="cryptlib_8h-source.html#l00458">458</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.    </td>
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<a name="_symmetric_ciphera2" doxytag="SymmetricCipher::OptimalBlockSize"></a><p>
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          <td class="md" nowrap valign="top"> virtual unsigned int StreamTransformation::OptimalBlockSize </td>
          <td class="md" valign="top">(&nbsp;</td>
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returns the input block size that is most efficient for this cipher 
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<dl compact><dt><b>Note:</b></dt><dd>optimal input length is n * <a class="el" href="class_stream_transformation.html#_symmetric_ciphera2">OptimalBlockSize()</a> - <a class="el" href="class_stream_transformation.html#_symmetric_ciphera3">GetOptimalBlockSizeUsed()</a> for any n &gt; 0 </dd></dl>

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Definition at line <a class="el" href="cryptlib_8h-source.html#l00465">465</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>.    </td>
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<a name="_symmetric_ciphera5" doxytag="SymmetricCipher::ProcessData"></a><p>
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          <td class="md" nowrap valign="top"> virtual void StreamTransformation::ProcessData </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">byte *&nbsp;</td>
          <td class="mdname" nowrap> <em>outString</em>, </td>
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          <td class="md" nowrap>const byte *&nbsp;</td>
          <td class="mdname" nowrap> <em>inString</em>, </td>
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          <td class="md" nowrap>unsigned int&nbsp;</td>
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          <td class="md" colspan="2"><code> [pure virtual, inherited]</code></td>
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encrypt or decrypt an array of bytes of specified length 
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<dl compact><dt><b>Note:</b></dt><dd>either inString == outString, or they don't overlap </dd></dl>

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Implemented in <a class="el" href="class_a_r_c4___base.html#_m_a_r_c4___basea2">ARC4_Base</a>, and <a class="el" href="class_public_blum_blum_shub.html#_public_blum_blum_shuba3">PublicBlumBlumShub</a>.
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Referenced by <a class="el" href="cryptlib_8cpp-source.html#l00076">StreamTransformation::ProcessLastBlock()</a>.    </td>
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<a name="_symmetric_ciphera6" doxytag="SymmetricCipher::ProcessLastBlock"></a><p>
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          <td class="md" nowrap valign="top"> void StreamTransformation::ProcessLastBlock </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">byte *&nbsp;</td>
          <td class="mdname" nowrap> <em>outString</em>, </td>
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          <td class="md" nowrap>const byte *&nbsp;</td>
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          <td class="md" nowrap>unsigned int&nbsp;</td>
          <td class="mdname" nowrap> <em>length</em></td>
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