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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++: PublicBlumBlumShub 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>PublicBlumBlumShub Class Reference</h1><code>#include <<a class="el" href="blumshub_8h-source.html">blumshub.h</a>></code><p><p>Inheritance diagram for PublicBlumBlumShub:<p><center><img src="class_public_blum_blum_shub.png" usemap="#PublicBlumBlumShub_map" border="0" alt=""></center><map name="PublicBlumBlumShub_map"><area href="class_random_number_generator.html" alt="RandomNumberGenerator" shape="rect" coords="0,112,158,136"><area href="class_stream_transformation.html" alt="StreamTransformation" shape="rect" coords="168,112,326,136"><area href="class_algorithm.html" alt="Algorithm" shape="rect" coords="0,56,158,80"><area href="class_algorithm.html" alt="Algorithm" shape="rect" coords="168,56,326,80"><area href="class_clonable.html" alt="Clonable" shape="rect" coords="0,0,158,24"><area href="class_clonable.html" alt="Clonable" shape="rect" coords="168,0,326,24"><area href="class_blum_blum_shub.html" alt="BlumBlumShub" shape="rect" coords="84,224,242,248"></map><a href="class_public_blum_blum_shub-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2><a class="el" href="class_blum_blum_shub.html">BlumBlumShub</a> without factorization of the modulus. <p><p>Definition at line <a class="el" href="blumshub_8h-source.html#l00012">12</a> of file <a class="el" href="blumshub_8h-source.html">blumshub.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 name="_public_blum_blum_shuba0" doxytag="PublicBlumBlumShub::PublicBlumBlumShub"></a> </td><td class="memItemRight" valign=bottom><b>PublicBlumBlumShub</b> (const <a class="el" href="class_integer.html">Integer</a> &n, const <a class="el" href="class_integer.html">Integer</a> &seed)</td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.html#_public_blum_blum_shuba1">GenerateBit</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">generate new random bit and return it </em> <a href="#_public_blum_blum_shuba1"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_public_blum_blum_shuba2" doxytag="PublicBlumBlumShub::GenerateByte"></a>byte </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.html#_public_blum_blum_shuba2">GenerateByte</a> ()</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">generate new random byte and return it <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.html#_public_blum_blum_shuba3">ProcessData</a> (byte *outString, const byte *inString, unsigned int length)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">encrypt or decrypt an array of bytes of specified length </em> <a href="#_public_blum_blum_shuba3"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_public_blum_blum_shuba4" doxytag="PublicBlumBlumShub::IsSelfInverting"></a>bool </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.html#_public_blum_blum_shuba4">IsSelfInverting</a> () const</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="_public_blum_blum_shuba5" doxytag="PublicBlumBlumShub::IsForwardTransformation"></a>bool </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.html#_public_blum_blum_shuba5">IsForwardTransformation</a> () const</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="_x917_r_n_ga3" doxytag="PublicBlumBlumShub::GenerateWord32"></a>virtual word32 </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.html#_x917_r_n_ga3">GenerateWord32</a> (word32 a=0, word32 b=0xffffffffL)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">generate a random 32 bit word in the range min to max, inclusive <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_public_blum_blum_shub.html#_x917_r_n_ga4">GenerateBlock</a> (byte *output, unsigned int size)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">generate random array of bytes </em> <a href="#_x917_r_n_ga4"></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_public_blum_blum_shub.html#_x917_r_n_ga5">DiscardBytes</a> (unsigned int n)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">generate and discard n bytes </em> <a href="#_x917_r_n_ga5"></a><em><br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_x917_r_n_ga6" doxytag="PublicBlumBlumShub::Shuffle"></a>template<class IT> void </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.html#_x917_r_n_ga6">Shuffle</a> (IT begin, IT end)</td></tr><tr><td class="mdescLeft"> </td><td class="mdescRight">randomly shuffle the specified array, resulting permutation is uniformly distributed <br><br></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_zlib_decompressora17" doxytag="PublicBlumBlumShub::AlgorithmName"></a>virtual std::string </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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="PublicBlumBlumShub::Clone"></a>virtual <a class="el" href="class_clonable.html">Clonable</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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><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_public_blum_blum_shub.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="PublicBlumBlumShub::MandatoryBlockSize"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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_public_blum_blum_shub.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="PublicBlumBlumShub::GetOptimalBlockSizeUsed"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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="PublicBlumBlumShub::OptimalDataAlignment"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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_public_blum_blum_shub.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="PublicBlumBlumShub::MinLastBlockSize"></a>virtual unsigned int </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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="PublicBlumBlumShub::ProcessString"></a>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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="PublicBlumBlumShub::ProcessString"></a>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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="PublicBlumBlumShub::ProcessByte"></a>byte </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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="PublicBlumBlumShub::IsRandomAccess"></a>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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="PublicBlumBlumShub::Seek"></a>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_public_blum_blum_shub.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 colspan=2><br><h2>Protected Attributes</h2></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_public_blum_blum_shubp0" doxytag="PublicBlumBlumShub::modn"></a>const <a class="el" href="class_modular_arithmetic.html">ModularArithmetic</a> </td><td class="memItemRight" valign=bottom><b>modn</b></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_public_blum_blum_shubp1" doxytag="PublicBlumBlumShub::maxBits"></a>const int </td><td class="memItemRight" valign=bottom><b>maxBits</b></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_public_blum_blum_shubp2" doxytag="PublicBlumBlumShub::current"></a><a class="el" href="class_integer.html">Integer</a> </td><td class="memItemRight" valign=bottom><b>current</b></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_public_blum_blum_shubp3" doxytag="PublicBlumBlumShub::bitsLeft"></a>int </td><td class="memItemRight" valign=bottom><b>bitsLeft</b></td></tr><tr><td colspan=2><br><h2>Friends</h2></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_public_blum_blum_shubn0" doxytag="PublicBlumBlumShub::BlumGoldwasserPublicKey"></a>class </td><td class="memItemRight" valign=bottom><b>BlumGoldwasserPublicKey</b></td></tr><tr><td class="memItemLeft" nowrap align=right valign=top><a name="_public_blum_blum_shubn1" doxytag="PublicBlumBlumShub::BlumGoldwasserPrivateKey"></a>class </td><td class="memItemRight" valign=bottom><b>BlumGoldwasserPrivateKey</b></td></tr></table><hr><h2>Member Function Documentation</h2><a name="_public_blum_blum_shuba1" doxytag="PublicBlumBlumShub::GenerateBit"></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"> unsigned int PublicBlumBlumShub::GenerateBit </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> [virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>generate new random bit and return it <p>Default implementation is to call <a class="el" href="class_public_blum_blum_shub.html#_public_blum_blum_shuba2">GenerateByte()</a> and return its parity. <p>Reimplemented from <a class="el" href="class_random_number_generator.html#_x917_r_n_ga2">RandomNumberGenerator</a>.<p>Definition at line <a class="el" href="blumshub_8cpp-source.html#l00016">16</a> of file <a class="el" href="blumshub_8cpp-source.html">blumshub.cpp</a>.<p>References <a class="el" href="integer_8cpp-source.html#l02644">Integer::GetBit()</a>, and <a class="el" href="modarith_8h-source.html#l00078">ModularArithmetic::Square()</a>.<p>Referenced by <a class="el" href="blumshub_8cpp-source.html#l00027">GenerateByte()</a>. </td> </tr></table><a name="_public_blum_blum_shuba3" doxytag="PublicBlumBlumShub::ProcessData"></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"> void PublicBlumBlumShub::ProcessData </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">byte * </td> <td class="mdname" nowrap> <em>outString</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>const byte * </td> <td class="mdname" nowrap> <em>inString</em>, </td> </tr> <tr> <td></td> <td></td> <td class="md" nowrap>unsigned int </td> <td class="mdname" nowrap> <em>length</em></td> </tr> <tr> <td></td> <td class="md">) </td> <td class="md" colspan="2"><code> [inline, virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing=5 cellpadding=0 border=0> <tr> <td> </td> <td><p>encrypt or decrypt an array of bytes of specified length <p>⌨️ 快捷键说明
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