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<h1>Source code for M2Crypto.RC4</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">absolute_import</span>
<span class="sd">"""M2Crypto wrapper for OpenSSL RC4 API.</span>
<span class="sd">Copyright (c) 1999-2003 Ng Pheng Siong. All rights reserved."""</span>
<span class="kn">from</span> <span class="nn">M2Crypto.m2</span> <span class="k">import</span> <span class="n">rc4_free</span><span class="p">,</span> <span class="n">rc4_new</span><span class="p">,</span> <span class="n">rc4_set_key</span><span class="p">,</span> <span class="n">rc4_update</span>
<div class="viewcode-block" id="RC4"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.RC4.RC4">[docs]</a><span class="k">class</span> <span class="nc">RC4</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="sd">"""Object interface to the stream cipher RC4."""</span>
<span class="n">rc4_free</span> <span class="o">=</span> <span class="n">rc4_free</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">cipher</span> <span class="o">=</span> <span class="n">rc4_new</span><span class="p">()</span>
<span class="k">if</span> <span class="n">key</span><span class="p">:</span>
<span class="n">rc4_set_key</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cipher</span><span class="p">,</span> <span class="n">key</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__del__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> None</span>
<span class="k">if</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'cipher'</span><span class="p">,</span> <span class="kc">None</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">rc4_free</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cipher</span><span class="p">)</span>
<div class="viewcode-block" id="RC4.set_key"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.RC4.RC4.set_key">[docs]</a> <span class="k">def</span> <span class="nf">set_key</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> None</span>
<span class="n">rc4_set_key</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cipher</span><span class="p">,</span> <span class="n">key</span><span class="p">)</span></div>
<div class="viewcode-block" id="RC4.update"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.RC4.RC4.update">[docs]</a> <span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">data</span><span class="p">):</span>
<span class="c1"># type: (bytes) -> bytes</span>
<span class="k">return</span> <span class="n">rc4_update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cipher</span><span class="p">,</span> <span class="n">data</span><span class="p">)</span></div>
<div class="viewcode-block" id="RC4.final"><a class="viewcode-back" href="../../M2Crypto.html#M2Crypto.RC4.RC4.final">[docs]</a> <span class="k">def</span> <span class="nf">final</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="c1"># type: () -> str</span>
<span class="k">return</span> <span class="s1">''</span></div></div>
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