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<title>Algorithms_in_C++: ciphers/hill_cipher.cpp File Reference</title>
<title>TheAlgorithms/C++: ciphers/hill_cipher.cpp File Reference</title>
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<div id="projectname">Algorithms_in_C++<span id="projectnumber">&#160;1.0.0</span>
<div id="projectname">TheAlgorithms/C++<span id="projectnumber">&#160;1.0.0</span>
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<div id="projectbrief">Set of algorithms implemented in C++.</div>
<div id="projectbrief">All the algorithms implemented in C++</div>
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@@ -130,7 +147,9 @@ Include dependency graph for hill_cipher.cpp:</div>
<div class="dyncontent">
<div class="center"><div class="zoom"><iframe scrolling="no" frameborder="0" src="../../d3/d1a/hill__cipher_8cpp__incl.svg" width="100%" height="449"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div></div>
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<p><a href="../../d7/db9/hill__cipher_8cpp_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d6/d26/classciphers_1_1_hill_cipher.html">ciphers::HillCipher</a></td></tr>
@@ -146,12 +165,12 @@ Namespaces</h2></td></tr>
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a34bfcd756610834acac501f9eea1e2eb" id="r_a34bfcd756610834acac501f9eea1e2eb"><td class="memTemplParams" colspan="2">template&lt;typename T &gt; </td></tr>
<tr class="memitem:a34bfcd756610834acac501f9eea1e2eb"><td class="memTemplItemLeft" align="right" valign="top">static <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a> &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#a34bfcd756610834acac501f9eea1e2eb">operator&lt;&lt;</a> (<a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a> &amp;out, <a class="el" href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix</a>&lt; T &gt; const &amp;v)</td></tr>
<tr class="memitem:a34bfcd756610834acac501f9eea1e2eb"><td class="memTemplItemLeft" align="right" valign="top">static std::ostream &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="#a34bfcd756610834acac501f9eea1e2eb">operator&lt;&lt;</a> (std::ostream &amp;out, <a class="el" href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix</a>&lt; T &gt; const &amp;v)</td></tr>
<tr class="separator:a34bfcd756610834acac501f9eea1e2eb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3147ad576f8a94a2a6b66948672b452b" id="r_a3147ad576f8a94a2a6b66948672b452b"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a3147ad576f8a94a2a6b66948672b452b">test1</a> (const <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> &amp;text)</td></tr>
<tr class="memitem:a3147ad576f8a94a2a6b66948672b452b" id="r_a3147ad576f8a94a2a6b66948672b452b"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a3147ad576f8a94a2a6b66948672b452b">test1</a> (const std::string &amp;text)</td></tr>
<tr class="memdesc:a3147ad576f8a94a2a6b66948672b452b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Self test 1 - using 3x3 randomly generated key. <br /></td></tr>
<tr class="separator:a3147ad576f8a94a2a6b66948672b452b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a04391124480d2a49f2dec900237b0712" id="r_a04391124480d2a49f2dec900237b0712"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a04391124480d2a49f2dec900237b0712">test2</a> (const <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> &amp;text)</td></tr>
<tr class="memitem:a04391124480d2a49f2dec900237b0712" id="r_a04391124480d2a49f2dec900237b0712"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a04391124480d2a49f2dec900237b0712">test2</a> (const std::string &amp;text)</td></tr>
<tr class="memdesc:a04391124480d2a49f2dec900237b0712"><td class="mdescLeft">&#160;</td><td class="mdescRight">Self test 2 - using 8x8 randomly generated key. <br /></td></tr>
<tr class="separator:a04391124480d2a49f2dec900237b0712"><td class="memSeparator" colspan="2">&#160;</td></tr>
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The matrix generation algorithm is very rudimentary and does not guarantee an invertible modulus matrix. </dd></dl>
<dl class="todo"><dt><b><a class="el" href="../../dd/da0/todo.html#_todo000001">Todo</a></b></dt><dd>Better matrix generation algorithm.</dd></dl>
<dl class="section author"><dt>Author</dt><dd><a href="https://github.com/kvedala" target="_blank">Krishna Vedala</a> </dd></dl>
<p class="definition">Definition in file <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html">hill_cipher.cpp</a>.</p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="ae66f6b31b5ad750f1fe042a706a4e3d4" name="ae66f6b31b5ad750f1fe042a706a4e3d4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae66f6b31b5ad750f1fe042a706a4e3d4">&#9670;&#160;</a></span>main()</h2>
@@ -190,32 +211,24 @@ The matrix generation algorithm is very rudimentary and does not guarantee an in
</table>
</div><div class="memdoc">
<p>Main function </p>
<p class="definition">Definition at line <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html#l00533">533</a> of file <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html">hill_cipher.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 533</span> {</div>
<div class="line"><span class="lineno"> 534</span> <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/numeric/random/srand.html">std::srand</a>(<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/chrono/c/time.html">std::time</a>(<span class="keyword">nullptr</span>));</div>
<div class="line"><span class="lineno"> 535</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Key dictionary: (&quot;</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/byte/strlen.html">std::strlen</a>(<a class="code hl_variable" href="../../d6/d4e/namespaceciphers.html#ab9aec0ccf4b6809f652bb540be87c216">ciphers::STRKEY</a>) &lt;&lt; <span class="stringliteral">&quot;)\n\t&quot;</span></div>
<div class="line"><span class="lineno"> 534</span> std::srand(std::time(<span class="keyword">nullptr</span>));</div>
<div class="line"><span class="lineno"> 535</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Key dictionary: (&quot;</span> &lt;&lt; std::strlen(<a class="code hl_variable" href="../../d6/d4e/namespaceciphers.html#ab9aec0ccf4b6809f652bb540be87c216">ciphers::STRKEY</a>) &lt;&lt; <span class="stringliteral">&quot;)\n\t&quot;</span></div>
<div class="line"><span class="lineno"> 536</span> &lt;&lt; <a class="code hl_variable" href="../../d6/d4e/namespaceciphers.html#ab9aec0ccf4b6809f652bb540be87c216">ciphers::STRKEY</a> &lt;&lt; <span class="stringliteral">&quot;\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 537</span> </div>
<div class="line"><span class="lineno"> 538</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> text = <span class="stringliteral">&quot;This is a simple text with numb3r5 and exclamat!0n.&quot;</span>;</div>
<div class="line"><span class="lineno"> 538</span> std::string text = <span class="stringliteral">&quot;This is a simple text with numb3r5 and exclamat!0n.&quot;</span>;</div>
<div class="line"><span class="lineno"> 539</span> </div>
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<div class="line"><span class="lineno"> 541</span> <a class="code hl_function" href="../../d3/dae/dsu__path__compression_8cpp.html#a45d94ead4cf4e1ff9f87c38bc99f59ae">test2</a>(text);</div>
<div class="line"><span class="lineno"> 542</span> </div>
<div class="line"><span class="lineno"> 543</span> <span class="keywordflow">return</span> 0;</div>
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<div class="ttc" id="abasic_ostream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a></div></div>
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<div class="ttc" id="adsu__path__compression_8cpp_html_ae7880ce913f3058a35ff106d5be9e243"><div class="ttname"><a href="../../d3/dae/dsu__path__compression_8cpp.html#ae7880ce913f3058a35ff106d5be9e243">test1</a></div><div class="ttdeci">static void test1()</div><div class="ttdoc">Self-test implementations, 1st test.</div><div class="ttdef"><b>Definition</b> dsu_path_compression.cpp:170</div></div>
<div class="ttc" id="anamespaceciphers_html_ab9aec0ccf4b6809f652bb540be87c216"><div class="ttname"><a href="../../d6/d4e/namespaceciphers.html#ab9aec0ccf4b6809f652bb540be87c216">ciphers::STRKEY</a></div><div class="ttdeci">static const char * STRKEY</div><div class="ttdef"><b>Definition</b> hill_cipher.cpp:74</div></div>
<div class="ttc" id="asrand_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/numeric/random/srand.html">std::srand</a></div><div class="ttdeci">T srand(T... args)</div></div>
<div class="ttc" id="astrlen_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/byte/strlen.html">std::strlen</a></div><div class="ttdeci">T strlen(T... args)</div></div>
<div class="ttc" id="atime_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/chrono/c/time.html">std::time</a></div><div class="ttdeci">T time(T... args)</div></div>
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<div class="center"><iframe scrolling="no" frameborder="0" src="../../d7/db9/hill__cipher_8cpp_ae66f6b31b5ad750f1fe042a706a4e3d4_cgraph.svg" width="628" height="384"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div>
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<div class="ttc" id="adsu__path__compression_8cpp_html_ae7880ce913f3058a35ff106d5be9e243"><div class="ttname"><a href="../../d3/dae/dsu__path__compression_8cpp.html#ae7880ce913f3058a35ff106d5be9e243">test1</a></div><div class="ttdeci">static void test1()</div><div class="ttdoc">Self-test implementations, 1st test.</div><div class="ttdef"><b>Definition</b> <a href="../../d3/dae/dsu__path__compression_8cpp_source.html#l00170">dsu_path_compression.cpp:170</a></div></div>
<div class="ttc" id="anamespaceciphers_html_ab9aec0ccf4b6809f652bb540be87c216"><div class="ttname"><a href="../../d6/d4e/namespaceciphers.html#ab9aec0ccf4b6809f652bb540be87c216">ciphers::STRKEY</a></div><div class="ttdeci">static const char * STRKEY</div><div class="ttdef"><b>Definition</b> <a href="../../d7/db9/hill__cipher_8cpp_source.html#l00074">hill_cipher.cpp:74</a></div></div>
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@@ -230,9 +243,9 @@ template&lt;typename T &gt; </div>
<td class="mlabels-left">
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<td class="memname">static <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a> &amp; operator&lt;&lt; </td>
<td class="memname">static std::ostream &amp; operator&lt;&lt; </td>
<td>(</td>
<td class="paramtype"><a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::ostream</a> &amp;</td> <td class="paramname"><span class="paramname"><em>out</em></span>, </td>
<td class="paramtype">std::ostream &amp;</td> <td class="paramname"><span class="paramname"><em>out</em></span>, </td>
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@@ -247,30 +260,22 @@ template&lt;typename T &gt; </div>
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<p>operator to print a matrix </p>
<p class="definition">Definition at line <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html#l00055">55</a> of file <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html">hill_cipher.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 55</span> {</div>
<div class="line"><span class="lineno"> 56</span> <span class="keyword">const</span> <span class="keywordtype">int</span> width = 15;</div>
<div class="line"><span class="lineno"> 57</span> <span class="keyword">const</span> <span class="keywordtype">char</span> separator = <span class="charliteral">&#39; &#39;</span>;</div>
<div class="line"><span class="lineno"> 58</span> </div>
<div class="line"><span class="lineno"> 59</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> row = 0; row &lt; v.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector/size.html">size</a>(); row++) {</div>
<div class="line"><span class="lineno"> 60</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> col = 0; col &lt; v[row].<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector/size.html">size</a>(); col++)</div>
<div class="line"><span class="lineno"> 61</span> out &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/left.html">std::left</a> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/setw.html">std::setw</a>(width) &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/setfill.html">std::setfill</a>(separator)</div>
<div class="line"><span class="lineno"> 59</span> <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> row = 0; row &lt; v.size(); row++) {</div>
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<div class="line"><span class="lineno"> 61</span> out &lt;&lt; std::left &lt;&lt; std::setw(width) &lt;&lt; std::setfill(separator)</div>
<div class="line"><span class="lineno"> 62</span> &lt;&lt; v[row][col];</div>
<div class="line"><span class="lineno"> 63</span> out &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 63</span> out &lt;&lt; std::endl;</div>
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<div class="line"><span class="lineno"> 65</span> </div>
<div class="line"><span class="lineno"> 66</span> <span class="keywordflow">return</span> out;</div>
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<div class="ttc" id="aendl_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a></div><div class="ttdeci">T endl(T... args)</div></div>
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<td class="memname">void test1 </td>
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<td class="paramtype">const <a class="elRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> &amp;</td> <td class="paramname"><span class="paramname"><em>text</em></span></td><td>)</td>
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<p class="definition">Definition at line <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html#l00471">471</a> of file <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html">hill_cipher.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 471</span> {</div>
<div class="line"><span class="lineno"> 472</span> <span class="comment">// std::string text = &quot;Hello world!&quot;;</span></div>
<div class="line"><span class="lineno"> 473</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;======Test 1 (3x3 key) ======\nOriginal text:\n\t&quot;</span> &lt;&lt; text</div>
<div class="line"><span class="lineno"> 474</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 473</span> std::cout &lt;&lt; <span class="stringliteral">&quot;======Test 1 (3x3 key) ======\nOriginal text:\n\t&quot;</span> &lt;&lt; text</div>
<div class="line"><span class="lineno"> 474</span> &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 475</span> </div>
<div class="line"><span class="lineno"> 476</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair&lt;matrix&lt;int&gt;</a>, <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">matrix&lt;int&gt;</a>&gt; p =</div>
<div class="line"><span class="lineno"> 476</span> std::pair&lt;matrix&lt;int&gt;, <a class="code hl_typedef" href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix&lt;int&gt;</a>&gt; p =</div>
<div class="line"><span class="lineno"> 477</span> <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#a405b0a28d66a61239d3565d5256f9cb5">ciphers::HillCipher::generate_keys</a>(3, 0, 100);</div>
<div class="line"><span class="lineno"> 478</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">matrix&lt;int&gt;</a> ekey = p.first;</div>
<div class="line"><span class="lineno"> 479</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">matrix&lt;int&gt;</a> dkey = p.second;</div>
<div class="line"><span class="lineno"> 478</span> <a class="code hl_typedef" href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix&lt;int&gt;</a> ekey = p.first;</div>
<div class="line"><span class="lineno"> 479</span> <a class="code hl_typedef" href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix&lt;int&gt;</a> dkey = p.second;</div>
<div class="line"><span class="lineno"> 480</span> </div>
<div class="line"><span class="lineno"> 481</span> <span class="comment">// matrix&lt;int&gt; ekey = {{22, 28, 25}, {5, 26, 15}, {14, 18, 9}};</span></div>
<div class="line"><span class="lineno"> 482</span> <span class="comment">// std::cout &lt;&lt; &quot;Encryption key: \n&quot; &lt;&lt; ekey;</span></div>
<div class="line"><span class="lineno"> 483</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> gibberish = <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#aa8bbb6e4a5749f6008b06602d5103917">ciphers::HillCipher::encrypt_text</a>(text, ekey);</div>
<div class="line"><span class="lineno"> 484</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Encrypted text:\n\t&quot;</span> &lt;&lt; gibberish &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 483</span> std::string gibberish = <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#aa8bbb6e4a5749f6008b06602d5103917">ciphers::HillCipher::encrypt_text</a>(text, ekey);</div>
<div class="line"><span class="lineno"> 484</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Encrypted text:\n\t&quot;</span> &lt;&lt; gibberish &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 485</span> </div>
<div class="line"><span class="lineno"> 486</span> <span class="comment">// matrix&lt;int&gt; dkey = ciphers::HillCipher::generate_decryption_key(ekey);</span></div>
<div class="line"><span class="lineno"> 487</span> <span class="comment">// std::cout &lt;&lt; &quot;Decryption key: \n&quot; &lt;&lt; dkey;</span></div>
<div class="line"><span class="lineno"> 488</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> txt_back = <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#a427acfac1dbff3f48a2b071d449d965b">ciphers::HillCipher::decrypt_text</a>(gibberish, dkey);</div>
<div class="line"><span class="lineno"> 489</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Reconstruct text:\n\t&quot;</span> &lt;&lt; txt_back &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 488</span> std::string txt_back = <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#a427acfac1dbff3f48a2b071d449d965b">ciphers::HillCipher::decrypt_text</a>(gibberish, dkey);</div>
<div class="line"><span class="lineno"> 489</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Reconstruct text:\n\t&quot;</span> &lt;&lt; txt_back &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 490</span> </div>
<div class="line"><span class="lineno"> 491</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ofstream.html">std::ofstream</a> out_file(<span class="stringliteral">&quot;hill_cipher_test1.txt&quot;</span>);</div>
<div class="line"><span class="lineno"> 492</span> out_file &lt;&lt; <span class="stringliteral">&quot;Block size: &quot;</span> &lt;&lt; ekey.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector/size.html">size</a>() &lt;&lt; <span class="stringliteral">&quot;\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 491</span> std::ofstream out_file(<span class="stringliteral">&quot;hill_cipher_test1.txt&quot;</span>);</div>
<div class="line"><span class="lineno"> 492</span> out_file &lt;&lt; <span class="stringliteral">&quot;Block size: &quot;</span> &lt;&lt; ekey.size() &lt;&lt; <span class="stringliteral">&quot;\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 493</span> out_file &lt;&lt; <span class="stringliteral">&quot;Encryption Key:\n&quot;</span> &lt;&lt; ekey;</div>
<div class="line"><span class="lineno"> 494</span> out_file &lt;&lt; <span class="stringliteral">&quot;\nDecryption Key:\n&quot;</span> &lt;&lt; dkey;</div>
<div class="line"><span class="lineno"> 495</span> out_file.close();</div>
<div class="line"><span class="lineno"> 496</span> </div>
<div class="line"><span class="lineno"> 497</span> assert(txt_back == text);</div>
<div class="line"><span class="lineno"> 498</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Passed :)\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 498</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Passed :)\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 499</span>}</div>
<div class="ttc" id="abasic_ofstream_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/io/basic_ofstream.html">std::ofstream</a></div></div>
<div class="ttc" id="aclassciphers_1_1_hill_cipher_html_a405b0a28d66a61239d3565d5256f9cb5"><div class="ttname"><a href="../../d6/d26/classciphers_1_1_hill_cipher.html#a405b0a28d66a61239d3565d5256f9cb5">ciphers::HillCipher::generate_keys</a></div><div class="ttdeci">static std::pair&lt; matrix&lt; int &gt;, matrix&lt; int &gt; &gt; generate_keys(size_t size, int limit1=0, int limit2=10)</div><div class="ttdoc">Generate encryption and decryption key pair.</div><div class="ttdef"><b>Definition</b> hill_cipher.cpp:425</div></div>
<div class="ttc" id="aclassciphers_1_1_hill_cipher_html_a427acfac1dbff3f48a2b071d449d965b"><div class="ttname"><a href="../../d6/d26/classciphers_1_1_hill_cipher.html#a427acfac1dbff3f48a2b071d449d965b">ciphers::HillCipher::decrypt_text</a></div><div class="ttdeci">static const std::string decrypt_text(const std::string &amp;text, const matrix&lt; int &gt; &amp;decrypt_key)</div><div class="ttdoc">Decrypt a given text using a given key.</div><div class="ttdef"><b>Definition</b> hill_cipher.cpp:458</div></div>
<div class="ttc" id="aclassciphers_1_1_hill_cipher_html_aa8bbb6e4a5749f6008b06602d5103917"><div class="ttname"><a href="../../d6/d26/classciphers_1_1_hill_cipher.html#aa8bbb6e4a5749f6008b06602d5103917">ciphers::HillCipher::encrypt_text</a></div><div class="ttdeci">static const std::string encrypt_text(const std::string &amp;text, const matrix&lt; int &gt; &amp;encrypt_key)</div><div class="ttdoc">Encrypt a given text using a given key.</div><div class="ttdef"><b>Definition</b> hill_cipher.cpp:446</div></div>
<div class="ttc" id="apair_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair</a></div></div>
<div class="ttc" id="avector_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/vector.html">std::vector</a></div></div>
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<div class="center"><div class="zoom"><iframe scrolling="no" frameborder="0" src="../../d7/db9/hill__cipher_8cpp_a3147ad576f8a94a2a6b66948672b452b_cgraph.svg" width="100%" height="600"><p><b>This browser is not able to show SVG: try Firefox, Chrome, Safari, or Opera instead.</b></p></iframe></div></div>
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<div class="ttc" id="aclassciphers_1_1_hill_cipher_html_a405b0a28d66a61239d3565d5256f9cb5"><div class="ttname"><a href="../../d6/d26/classciphers_1_1_hill_cipher.html#a405b0a28d66a61239d3565d5256f9cb5">ciphers::HillCipher::generate_keys</a></div><div class="ttdeci">static std::pair&lt; matrix&lt; int &gt;, matrix&lt; int &gt; &gt; generate_keys(size_t size, int limit1=0, int limit2=10)</div><div class="ttdoc">Generate encryption and decryption key pair.</div><div class="ttdef"><b>Definition</b> <a href="../../d7/db9/hill__cipher_8cpp_source.html#l00425">hill_cipher.cpp:425</a></div></div>
<div class="ttc" id="aclassciphers_1_1_hill_cipher_html_a427acfac1dbff3f48a2b071d449d965b"><div class="ttname"><a href="../../d6/d26/classciphers_1_1_hill_cipher.html#a427acfac1dbff3f48a2b071d449d965b">ciphers::HillCipher::decrypt_text</a></div><div class="ttdeci">static const std::string decrypt_text(const std::string &amp;text, const matrix&lt; int &gt; &amp;decrypt_key)</div><div class="ttdoc">Decrypt a given text using a given key.</div><div class="ttdef"><b>Definition</b> <a href="../../d7/db9/hill__cipher_8cpp_source.html#l00458">hill_cipher.cpp:458</a></div></div>
<div class="ttc" id="aclassciphers_1_1_hill_cipher_html_aa8bbb6e4a5749f6008b06602d5103917"><div class="ttname"><a href="../../d6/d26/classciphers_1_1_hill_cipher.html#aa8bbb6e4a5749f6008b06602d5103917">ciphers::HillCipher::encrypt_text</a></div><div class="ttdeci">static const std::string encrypt_text(const std::string &amp;text, const matrix&lt; int &gt; &amp;encrypt_key)</div><div class="ttdoc">Encrypt a given text using a given key.</div><div class="ttdef"><b>Definition</b> <a href="../../d7/db9/hill__cipher_8cpp_source.html#l00446">hill_cipher.cpp:446</a></div></div>
<div class="ttc" id="alu__decomposition_8h_html_ac029b636b353cefbb18b2fcc71e427e4"><div class="ttname"><a href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix</a></div><div class="ttdeci">std::vector&lt; std::valarray&lt; T &gt; &gt; matrix</div><div class="ttdef"><b>Definition</b> <a href="../../d1/dbe/lu__decomposition_8h_source.html#l00019">lu_decomposition.h:19</a></div></div>
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<td class="memname">void test2 </td>
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<td class="paramtype">const std::string &amp;</td> <td class="paramname"><span class="paramname"><em>text</em></span></td><td>)</td>
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<p class="definition">Definition at line <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html#l00506">506</a> of file <a class="el" href="../../d7/db9/hill__cipher_8cpp_source.html">hill_cipher.cpp</a>.</p>
<div class="fragment"><div class="line"><span class="lineno"> 506</span> {</div>
<div class="line"><span class="lineno"> 507</span> <span class="comment">// std::string text = &quot;Hello world!&quot;;</span></div>
<div class="line"><span class="lineno"> 508</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;======Test 2 (8x8 key) ======\nOriginal text:\n\t&quot;</span> &lt;&lt; text</div>
<div class="line"><span class="lineno"> 509</span> &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 508</span> std::cout &lt;&lt; <span class="stringliteral">&quot;======Test 2 (8x8 key) ======\nOriginal text:\n\t&quot;</span> &lt;&lt; text</div>
<div class="line"><span class="lineno"> 509</span> &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 510</span> </div>
<div class="line"><span class="lineno"> 511</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair&lt;matrix&lt;int&gt;</a>, <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">matrix&lt;int&gt;</a>&gt; p =</div>
<div class="line"><span class="lineno"> 511</span> std::pair&lt;matrix&lt;int&gt;, <a class="code hl_typedef" href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix&lt;int&gt;</a>&gt; p =</div>
<div class="line"><span class="lineno"> 512</span> <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#a405b0a28d66a61239d3565d5256f9cb5">ciphers::HillCipher::generate_keys</a>(8, 0, 3);</div>
<div class="line"><span class="lineno"> 513</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">matrix&lt;int&gt;</a> ekey = p.first;</div>
<div class="line"><span class="lineno"> 514</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector.html">matrix&lt;int&gt;</a> dkey = p.second;</div>
<div class="line"><span class="lineno"> 513</span> <a class="code hl_typedef" href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix&lt;int&gt;</a> ekey = p.first;</div>
<div class="line"><span class="lineno"> 514</span> <a class="code hl_typedef" href="../../d1/dbe/lu__decomposition_8h.html#ac029b636b353cefbb18b2fcc71e427e4">matrix&lt;int&gt;</a> dkey = p.second;</div>
<div class="line"><span class="lineno"> 515</span> </div>
<div class="line"><span class="lineno"> 516</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> gibberish = <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#aa8bbb6e4a5749f6008b06602d5103917">ciphers::HillCipher::encrypt_text</a>(text, ekey);</div>
<div class="line"><span class="lineno"> 517</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Encrypted text:\n\t&quot;</span> &lt;&lt; gibberish &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 516</span> std::string gibberish = <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#aa8bbb6e4a5749f6008b06602d5103917">ciphers::HillCipher::encrypt_text</a>(text, ekey);</div>
<div class="line"><span class="lineno"> 517</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Encrypted text:\n\t&quot;</span> &lt;&lt; gibberish &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 518</span> </div>
<div class="line"><span class="lineno"> 519</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> txt_back = <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#a427acfac1dbff3f48a2b071d449d965b">ciphers::HillCipher::decrypt_text</a>(gibberish, dkey);</div>
<div class="line"><span class="lineno"> 520</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Reconstruct text:\n\t&quot;</span> &lt;&lt; txt_back &lt;&lt; <a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/manip/endl.html">std::endl</a>;</div>
<div class="line"><span class="lineno"> 519</span> std::string txt_back = <a class="code hl_function" href="../../d6/d26/classciphers_1_1_hill_cipher.html#a427acfac1dbff3f48a2b071d449d965b">ciphers::HillCipher::decrypt_text</a>(gibberish, dkey);</div>
<div class="line"><span class="lineno"> 520</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Reconstruct text:\n\t&quot;</span> &lt;&lt; txt_back &lt;&lt; std::endl;</div>
<div class="line"><span class="lineno"> 521</span> </div>
<div class="line"><span class="lineno"> 522</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ofstream.html">std::ofstream</a> out_file(<span class="stringliteral">&quot;hill_cipher_test2.txt&quot;</span>);</div>
<div class="line"><span class="lineno"> 523</span> out_file &lt;&lt; <span class="stringliteral">&quot;Block size: &quot;</span> &lt;&lt; ekey.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/container/vector/size.html">size</a>() &lt;&lt; <span class="stringliteral">&quot;\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 522</span> std::ofstream out_file(<span class="stringliteral">&quot;hill_cipher_test2.txt&quot;</span>);</div>
<div class="line"><span class="lineno"> 523</span> out_file &lt;&lt; <span class="stringliteral">&quot;Block size: &quot;</span> &lt;&lt; ekey.size() &lt;&lt; <span class="stringliteral">&quot;\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 524</span> out_file &lt;&lt; <span class="stringliteral">&quot;Encryption Key:\n&quot;</span> &lt;&lt; ekey;</div>
<div class="line"><span class="lineno"> 525</span> out_file &lt;&lt; <span class="stringliteral">&quot;\nDecryption Key:\n&quot;</span> &lt;&lt; dkey;</div>
<div class="line"><span class="lineno"> 526</span> out_file.close();</div>
<div class="line"><span class="lineno"> 527</span> </div>
<div class="line"><span class="lineno"> 528</span> assert(txt_back.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/compare.html">compare</a>(0, text.<a class="code hl_functionRef" target="_blank" href="http://en.cppreference.com/w/cpp/string/basic_string/size.html">size</a>(), text) == 0);</div>
<div class="line"><span class="lineno"> 529</span> <a class="code hl_classRef" target="_blank" href="http://en.cppreference.com/w/cpp/io/basic_ostream.html">std::cout</a> &lt;&lt; <span class="stringliteral">&quot;Passed :)\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 528</span> assert(txt_back.compare(0, text.size(), text) == 0);</div>
<div class="line"><span class="lineno"> 529</span> std::cout &lt;&lt; <span class="stringliteral">&quot;Passed :)\n&quot;</span>;</div>
<div class="line"><span class="lineno"> 530</span>}</div>
<div class="ttc" id="acompare_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string/compare.html">std::string::compare</a></div><div class="ttdeci">T compare(T... args)</div></div>
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