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<div class="section" id="smartcardsam-module">
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<h1>SmartcardSAM Module<a class="headerlink" href="#smartcardsam-module" title="Permalink to this headline">¶</a></h1>
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<div class="graphviz"><img src="../../_images/inheritance-f008352fda418a6e639df3493492ecf2a1976c1b.png" alt="Inheritance diagram of virtualsmartcard.SmartcardSAM" usemap="#inheritance8b3e5dd7ee" class="inheritance graphviz" /></div>
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<map id="inheritance8b3e5dd7ee" name="inheritance8b3e5dd7ee">
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<area shape="rect" id="node1" href="#virtualsmartcard.SmartcardSAM.SAM" target="_top" title="This class is used to store the data needed by the SAM." alt="" coords="5,5,271,31"/>
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</map><span class="target" id="module-virtualsmartcard.SmartcardSAM"></span><dl class="py class">
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<dt id="virtualsmartcard.SmartcardSAM.SAM">
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<em class="property"><span class="pre">class</span> </em><code class="sig-prename descclassname"><span class="pre">virtualsmartcard.SmartcardSAM.</span></code><code class="sig-name descname"><span class="pre">SAM</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="pre">PIN</span></em>, <em class="sig-param"><span class="pre">cardNumber</span></em>, <em class="sig-param"><span class="pre">mf=None</span></em>, <em class="sig-param"><span class="pre">cardSecret=None</span></em>, <em class="sig-param"><span class="pre">default_se=<class</span> <span class="pre">'virtualsmartcard.SEutils.Security_Environment'></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM" title="Permalink to this definition">¶</a></dt>
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<dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></p>
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<p>This class is used to store the data needed by the SAM.
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It includes the PIN, the master key of the SAM and a hashmap containing all
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the keys used by the file encryption system. The keys in the hashmap are
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indexed via the path to the corresponding container.</p>
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<dl class="py method">
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<dt id="virtualsmartcard.SmartcardSAM.SAM.FSdecrypt">
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<code class="sig-name descname"><span class="pre">FSdecrypt</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.FSdecrypt" title="Permalink to this definition">¶</a></dt>
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<dd><p>Decrypt the given data, using the parameters stored in the SAM.
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Right now we do not encrypt the data. In memory encryption might or
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might not be added in a future version.</p>
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</dd></dl>
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<dl class="py method">
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<dt id="virtualsmartcard.SmartcardSAM.SAM.FSencrypt">
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<code class="sig-name descname"><span class="pre">FSencrypt</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.FSencrypt" title="Permalink to this definition">¶</a></dt>
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<dd><p>Encrypt the given data, using the parameters stored in the SAM.
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Right now we do not encrypt the data. In memory encryption might or
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might not be added in a future version.</p>
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</dd></dl>
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<dl class="py method">
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<dt id="virtualsmartcard.SmartcardSAM.SAM._get_referenced_key">
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<code class="sig-name descname"><span class="pre">_get_referenced_key</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM._get_referenced_key" title="Permalink to this definition">¶</a></dt>
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<dd><p>This method returns the key specified by the p2 parameter. The key may
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be stored on the cards filesystem.</p>
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<dl class="field-list simple">
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<dt class="field-odd">Parameters</dt>
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<dd class="field-odd"><ul class="simple">
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<li><p><strong>p1</strong> – Specifies the algorithm to use.</p></li>
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<li><p><strong>p2</strong> – <p>Specifies a reference to the key to be used for encryption.</p>
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<table class="docutils align-default">
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<colgroup>
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<col style="width: 3%" />
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<col style="width: 3%" />
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<col style="width: 3%" />
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<col style="width: 3%" />
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<col style="width: 3%" />
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<col style="width: 3%" />
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<col style="width: 3%" />
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<col style="width: 3%" />
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<col style="width: 73%" />
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</colgroup>
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<thead>
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<tr class="row-odd"><th class="head"><p>b8</p></th>
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<th class="head"><p>b7</p></th>
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<th class="head"><p>b6</p></th>
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<th class="head"><p>b5</p></th>
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<th class="head"><p>b4</p></th>
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<th class="head"><p>b3</p></th>
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<th class="head"><p>b2</p></th>
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<th class="head"><p>b1</p></th>
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<th class="head"><p>Meaning</p></th>
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</tr>
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</thead>
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<tbody>
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<tr class="row-even"><td><p>0</p></td>
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<td><p>0</p></td>
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<td><p>0</p></td>
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<td><p>0</p></td>
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<td><p>0</p></td>
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<td><p>0</p></td>
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<td><p>0</p></td>
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<td><p>0</p></td>
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<td><p>No information is given</p></td>
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</tr>
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<tr class="row-odd"><td><p>0</p></td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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<td><ul>
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<li></li>
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||
</ul>
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</td>
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<td><ul>
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<li></li>
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</ul>
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||
</td>
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<td><ul>
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||
<li></li>
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||
</ul>
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</td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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<td><p>Global reference data(e.g. MF specific key)</p></td>
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</tr>
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<tr class="row-even"><td><p>1</p></td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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||
<td><ul>
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||
<li></li>
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||
</ul>
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||
</td>
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<td><ul>
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<li></li>
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||
</ul>
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</td>
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<td><ul>
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<li></li>
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||
</ul>
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</td>
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<td><ul>
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||
<li></li>
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</ul>
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</td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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<td><p>Specific reference data(e.g. DF specific
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key)</p></td>
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</tr>
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<tr class="row-odd"><td><ul>
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<li></li>
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</ul>
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</td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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<td><ul>
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<li></li>
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</ul>
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</td>
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<td><p>x</p></td>
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<td><p>x</p></td>
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<td><p>x</p></td>
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<td><p>x</p></td>
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<td><p>x</p></td>
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<td><p>Number of the secret</p></td>
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</tr>
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</tbody>
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</table>
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<p>Any other value RFU</p>
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</p></li>
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</ul>
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</dd>
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</dl>
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</dd></dl>
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<dl class="py method">
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<dt id="virtualsmartcard.SmartcardSAM.SAM.change_reference_data">
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<code class="sig-name descname"><span class="pre">change_reference_data</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.change_reference_data" title="Permalink to this definition">¶</a></dt>
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<dd><p>Change the specified referenced data (e.g. CHV) of the card</p>
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</dd></dl>
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<dl class="py method">
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<dt id="virtualsmartcard.SmartcardSAM.SAM.erase_SE">
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<code class="sig-name descname"><span class="pre">erase_SE</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">SEID</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.erase_SE" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Erases a Security Environment stored under SEID from the SAM</p>
|
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</dd></dl>
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||
|
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<dl class="py method">
|
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<dt id="virtualsmartcard.SmartcardSAM.SAM.external_authenticate">
|
||
<code class="sig-name descname"><span class="pre">external_authenticate</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.external_authenticate" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Authenticate the terminal to the card. Check whether Terminal correctly
|
||
encrypted the given challenge or not</p>
|
||
</dd></dl>
|
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|
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<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.generate_public_key_pair">
|
||
<code class="sig-name descname"><span class="pre">generate_public_key_pair</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.generate_public_key_pair" title="Permalink to this definition">¶</a></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.get_card_number">
|
||
<code class="sig-name descname"><span class="pre">get_card_number</span></code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.get_card_number" title="Permalink to this definition">¶</a></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.get_challenge">
|
||
<code class="sig-name descname"><span class="pre">get_challenge</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.get_challenge" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Generate a random number of maximum 8 Byte and return it.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.internal_authenticate">
|
||
<code class="sig-name descname"><span class="pre">internal_authenticate</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.internal_authenticate" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Authenticate card to terminal. Encrypt the challenge of the terminal
|
||
to prove key posession</p>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.manage_security_environment">
|
||
<code class="sig-name descname"><span class="pre">manage_security_environment</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.manage_security_environment" title="Permalink to this definition">¶</a></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.mutual_authenticate">
|
||
<code class="sig-name descname"><span class="pre">mutual_authenticate</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">mutual_challenge</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.mutual_authenticate" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Takes an encrypted challenge in the form
|
||
‘Terminal Challenge | Card Challenge | Card number’
|
||
and checks it for validity. If the challenge is successful
|
||
the card encrypts ‘Card Challenge | Terminal challenge’ and
|
||
returns this value</p>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.parse_SM_CAPDU">
|
||
<code class="sig-name descname"><span class="pre">parse_SM_CAPDU</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">CAPDU</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">header_authentication</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.parse_SM_CAPDU" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Parse a command APDU protected by Secure Messaging and return the
|
||
unprotected command APDU</p>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.perform_security_operation">
|
||
<code class="sig-name descname"><span class="pre">perform_security_operation</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.perform_security_operation" title="Permalink to this definition">¶</a></dt>
|
||
<dd></dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.protect_result">
|
||
<code class="sig-name descname"><span class="pre">protect_result</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">sw</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">unprotected_result</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.protect_result" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Protect a plain response APDU by Secure Messaging</p>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.restore_SE">
|
||
<code class="sig-name descname"><span class="pre">restore_SE</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">SEID</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.restore_SE" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Restores a Security Environment from the SAM and replaces the current
|
||
SE with it.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.set_MF">
|
||
<code class="sig-name descname"><span class="pre">set_MF</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">mf</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.set_MF" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Setter function for the internal reference to the Filesystem. The SAM
|
||
needs a reference to the filesystem in order to store/retrieve keys.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.set_asym_algorithm">
|
||
<code class="sig-name descname"><span class="pre">set_asym_algorithm</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">cipher</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">keytype</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.set_asym_algorithm" title="Permalink to this definition">¶</a></dt>
|
||
<dd><dl class="field-list simple">
|
||
<dt class="field-odd">Parameters</dt>
|
||
<dd class="field-odd"><ul class="simple">
|
||
<li><p><strong>cipher</strong> – Public/private key object from used for encryption</p></li>
|
||
<li><p><strong>keytype</strong> – Type of the public key (e.g. RSA, DSA)</p></li>
|
||
</ul>
|
||
</dd>
|
||
</dl>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.store_SE">
|
||
<code class="sig-name descname"><span class="pre">store_SE</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">SEID</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.store_SE" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Stores the current Security environment in the secure access module.
|
||
The SEID is used as a reference to identify the SE.</p>
|
||
</dd></dl>
|
||
|
||
<dl class="py method">
|
||
<dt id="virtualsmartcard.SmartcardSAM.SAM.verify">
|
||
<code class="sig-name descname"><span class="pre">verify</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">p2</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">PIN</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.SAM.verify" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>Authenticate the card user. Check if he entered a valid PIN.
|
||
If the PIN is invalid decrement retry counter. If retry counter
|
||
equals zero, block the card until reset with correct PUK</p>
|
||
</dd></dl>
|
||
|
||
</dd></dl>
|
||
|
||
<dl class="py function">
|
||
<dt id="virtualsmartcard.SmartcardSAM.get_referenced_cipher">
|
||
<code class="sig-prename descclassname"><span class="pre">virtualsmartcard.SmartcardSAM.</span></code><code class="sig-name descname"><span class="pre">get_referenced_cipher</span></code><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">p1</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#virtualsmartcard.SmartcardSAM.get_referenced_cipher" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>P1 defines the algorithm and mode to use. We dispatch it and return a
|
||
string that is understood by CryptoUtils.py functions</p>
|
||
</dd></dl>
|
||
|
||
</div>
|
||
|
||
|
||
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|
||
|
||
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|
||
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||
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||
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