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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Crypto++: StreamTransformation class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.3.2 --><div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Compound List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="namespacemembers.html">Namespace Members</a> | <a class="qindex" href="functions.html">Compound Members</a> | <a class="qindex" href="globals.html">File Members</a></div><h1>StreamTransformation Class Reference</h1><code>#include <<a class="el" href="cryptlib_8h-source.html">cryptlib.h</a>></code><p><p>Inheritance diagram for StreamTransformation:<p><center><img src="class_stream_transformation.png" usemap="#StreamTransformation_map" border="0" alt=""></center><map name="StreamTransformation_map"><area href="class_algorithm.html" alt="Algorithm" shape="rect" coords="565,56,932,80"><area href="class_clonable.html" alt="Clonable" shape="rect" coords="565,0,932,24"><area href="class_public_blum_blum_shub.html" alt="PublicBlumBlumShub" shape="rect" coords="0,168,367,192"><area href="class_sapphire_decryption.html" alt="SapphireDecryption" shape="rect" coords="377,168,744,192"><area href="class_sapphire_encryption.html" alt="SapphireEncryption" shape="rect" coords="754,168,1121,192"><area href="class_symmetric_cipher.html" alt="SymmetricCipher" shape="rect" coords="1790,168,2157,192"><area href="class_blum_blum_shub.html" alt="BlumBlumShub" shape="rect" coords="0,224,367,248"><area href="class_sapphire_hash.html" alt="SapphireHash" shape="rect" coords="565,224,932,248"><area href="class_sapphire_r_n_g.html" alt="SapphireRNG" shape="rect" coords="942,224,1309,248"><area href="class_a_r_c4___base.html" alt="ARC4_Base" shape="rect" coords="1319,224,1686,248"><area href="class_m_a_r_c4___base.html" alt="MARC4_Base" shape="rect" coords="1319,280,1686,304"></map><a href="class_stream_transformation-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>interface for the data processing part of stream ciphers <p><p>Definition at line <a class="el" href="cryptlib_8h-source.html#l00452">452</a> of file <a class="el" href="cryptlib_8h-source.html">cryptlib.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="class_stream_transformation.html">StreamTransformation</a> & </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera0">Ref</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">return a reference to this object, </em> <a href="#_symmetric_ciphera0"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera1" doxytag="StreamTransformation::MandatoryBlockSize"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera1">MandatoryBlockSize</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns block size, if input must be processed in blocks, otherwise 1 <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera2">OptimalBlockSize</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns the input block size that is most efficient for this cipher </em> <a href="#_symmetric_ciphera2"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera3" doxytag="StreamTransformation::GetOptimalBlockSizeUsed"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera3">GetOptimalBlockSizeUsed</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns how much of the current block is used up <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera4" doxytag="StreamTransformation::OptimalDataAlignment"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera4">OptimalDataAlignment</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns how input should be aligned for optimal performance <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera5">ProcessData</a> (byte *outString, const byte *inString, unsigned int length)=0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">encrypt or decrypt an array of bytes of specified length </em> <a href="#_symmetric_ciphera5"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera6">ProcessLastBlock</a> (byte *outString, const byte *inString, unsigned int length)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">for ciphers where the last block of data is special, encrypt or decrypt the last block of data </em> <a href="#_symmetric_ciphera6"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera7" doxytag="StreamTransformation::MinLastBlockSize"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera7">MinLastBlockSize</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns the minimum size of the last block, 0 indicating the last block is not special <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera8" doxytag="StreamTransformation::ProcessString"></a>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera8">ProcessString</a> (byte *inoutString, unsigned int length)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">same as ProcessData(inoutString, inoutString, length) <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera9" doxytag="StreamTransformation::ProcessString"></a>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera9">ProcessString</a> (byte *outString, const byte *inString, unsigned int length)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">same as ProcessData(outString, inString, length) <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera10" doxytag="StreamTransformation::ProcessByte"></a>byte </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera10">ProcessByte</a> (byte input)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">implemented as {ProcessData(&input, &input, 1); return input;} <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera11" doxytag="StreamTransformation::IsRandomAccess"></a>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera11">IsRandomAccess</a> () const=0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns whether this cipher supports random access <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera12" doxytag="StreamTransformation::Seek"></a>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera12">Seek</a> (dword n)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">for random access ciphers, seek to an absolute position <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera13" doxytag="StreamTransformation::IsSelfInverting"></a>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera13">IsSelfInverting</a> () const=0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns whether this transformation is self-inverting (e.g. xor with a keystream) <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_symmetric_ciphera14" doxytag="StreamTransformation::IsForwardTransformation"></a>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_symmetric_ciphera14">IsForwardTransformation</a> () const=0</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns whether this is an encryption object <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_zlib_decompressora17" doxytag="StreamTransformation::AlgorithmName"></a>virtual std::string </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_zlib_decompressora17">AlgorithmName</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">returns name of this algorithm, not universally implemented yet <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_zlib_decompressora18" doxytag="StreamTransformation::Clone"></a>virtual <a class="el" href="class_clonable.html">Clonable</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="class_stream_transformation.html#_zlib_decompressora18">Clone</a> () const</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">this is not implemented by most classes yet <br><br></td></tr></table><hr><h2>Member Function Documentation</h2><a name="_symmetric_ciphera0" doxytag="StreamTransformation::Ref"></a><p><table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> <a class="el" href="class_stream_transformation.html">StreamTransformation</a>& StreamTransformation::Ref </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap><code> [inline]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>return a reference to this object, <p>This function is useful for passing a temporary StreamTransformation object to a function that takes a non-const reference. <p>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> </tr></table><a name="_symmetric_ciphera2" doxytag="StreamTransformation::OptimalBlockSize"></a><p><table class="mdTable" width="100%" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top"> virtual unsigned int StreamTransformation::OptimalBlockSize </td>⌨️ 快捷键说明
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