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+ <meta name="author" content="Robin Dietrich & Marius Schwarz">
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+ <title>Implementation Attacks</title>
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+ </style>
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+</head>
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+<body>
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+ <div class="reveal">
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+ <div class="slides">
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+
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+<section id="title-slide">
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+ <h1 class="title">Implementation Attacks</h1>
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+ <p class="author">Robin Dietrich & Marius Schwarz</p>
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+</section>
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+
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+<section id="agenda" class="slide level1">
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+<h1>Agenda</h1>
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+<ul>
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+<li>Einleitung</li>
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+<li>Seitenkanalangriffe</li>
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+<li>Speck</li>
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+<li>CPA Angriffe</li>
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+<li>CPA auf Speck</li>
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+<li>Gegenmaßnahmen</li>
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+<li>Hiding</li>
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+</ul>
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+</section>
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+<section id="bedeutung-von-seitenkanalangriffen" class="slide level1">
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+<h1>Bedeutung von Seitenkanalangriffen</h1>
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+</section>
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+<section id="voraussetzungen-für-erfolgreichen-angriff" class="slide level1">
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+<h1>Voraussetzungen für erfolgreichen Angriff</h1>
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+</section>
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+<section id="speck" class="slide level1">
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+<h1>Speck</h1>
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+<ul>
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+<li>Symmentrische ARX Schiffre</li>
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+<li>Entworfen von der NSA (Zusammen mit Simon)</li>
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+<li>Performant in Hard-/Software</li>
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+<li>Speck bietet mehrere mögliche Modis
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+<ul>
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+<li>Runden, Schlüssellänge, …</li>
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+</ul></li>
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+</ul>
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+</section>
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+<section id="speck---setups" class="slide level1">
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+<h1>Speck - Setups</h1>
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+<table>
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+<thead>
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+<tr class="header">
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+<th>Speck</th>
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+<th>Blocklänge</th>
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+<th>Schlüssellänge</th>
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+<th>Runden</th>
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+</tr>
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+</thead>
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+<tbody>
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+<tr class="odd">
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+<td><span style="color:#d08a1d"><strong>Speck3264</strong></span></td>
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+<td><span style="color:#d08a1d"><strong>32 Bit</strong></span></td>
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+<td><span style="color:#d08a1d"><strong>64 Bit</strong></span></td>
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+<td><span style="color:#d08a1d"><strong>22</strong></span></td>
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+</tr>
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+<tr class="even">
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+<td>Speck4872</td>
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+<td>48 Bit</td>
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+<td>72 Bit</td>
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+<td>22</td>
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+</tr>
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+<tr class="odd">
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+<td>Speck4896</td>
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+<td>48 Bit</td>
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+<td>96 Bit</td>
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+<td>23</td>
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+</tr>
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+<tr class="even">
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+<td>Speck6496</td>
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+<td>64 Bit</td>
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+<td>96 Bit</td>
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+<td>26</td>
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+</tr>
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+<tr class="odd">
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+<td>Speck64128</td>
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+<td>64 Bit</td>
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+<td>128 Bit</td>
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+<td>27</td>
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+</tr>
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+<tr class="even">
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+<td>Speck9696</td>
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+<td>96 Bit</td>
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+<td>96 Bit</td>
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+<td>28</td>
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+</tr>
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+<tr class="odd">
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+<td>Speck96144</td>
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+<td>96 Bit</td>
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+<td>144 Bit</td>
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+<td>29</td>
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+</tr>
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+<tr class="even">
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+<td>Speck128128</td>
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+<td>128 Bit</td>
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+<td>128 Bit</td>
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+<td>32</td>
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+</tr>
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+<tr class="odd">
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+<td>Speck128192</td>
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+<td>128 Bit</td>
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+<td>192 Bit</td>
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+<td>33</td>
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+</tr>
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+<tr class="even">
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+<td>Speck1281256</td>
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+<td>128 Bit</td>
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+<td>256 Bit</td>
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+<td>34</td>
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+</tr>
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+</tbody>
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+</table>
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+</section>
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+<section id="speck---rundenfunktion" class="slide level1">
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+<h1>Speck - Rundenfunktion</h1>
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+<p><img data-src="img/rundenfunktion.png" width="400" /></p>
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+<ul>
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+<li>Wird während der Key Schedule aufgerufen</li>
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+<li>Wird beim der Verschlüsselung aufgerufen</li>
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+</ul>
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+</section>
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+<section id="speck---pseudocode" class="slide level1">
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+<h1>Speck - Pseudocode</h1>
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+<div class="sourceCode" id="cb1"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>pt <span class="op">=</span> Plaintext Bytes Pt <span class="op">=</span> Plaintext as <span class="dv">16</span> Bit Words</span>
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+<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a>ct <span class="op">=</span> Ciphertext Bytes Ct <span class="op">=</span> Ciphertext as <span class="dv">16</span> Bit Words</span>
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+<span id="cb1-3"><a href="#cb1-3" aria-hidden="true" tabindex="-1"></a>k <span class="op">=</span> Key as Bytes K <span class="op">=</span> Key as <span class="dv">16</span> Bit Words</span>
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+<span id="cb1-4"><a href="#cb1-4" aria-hidden="true" tabindex="-1"></a></span>
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+<span id="cb1-5"><a href="#cb1-5" aria-hidden="true" tabindex="-1"></a><span class="co">// Key Schedule</span></span>
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+<span id="cb1-6"><a href="#cb1-6" aria-hidden="true" tabindex="-1"></a>D<span class="op">=</span>K<span class="op">[</span><span class="dv">3</span><span class="op">],</span> C<span class="op">=</span>K<span class="op">[</span><span class="dv">2</span><span class="op">],</span> B<span class="op">=</span>K<span class="op">[</span><span class="dv">1</span><span class="op">],</span> A<span class="op">=</span>K<span class="op">[</span><span class="dv">0</span><span class="op">]</span></span>
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+<span id="cb1-7"><a href="#cb1-7" aria-hidden="true" tabindex="-1"></a></span>
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+<span id="cb1-8"><a href="#cb1-8" aria-hidden="true" tabindex="-1"></a><span class="cf">for</span> i in <span class="fl">0.</span><span class="er">.</span><span class="op"><</span><span class="dv">22</span></span>
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+<span id="cb1-9"><a href="#cb1-9" aria-hidden="true" tabindex="-1"></a> rk<span class="op">[</span>i<span class="op">]=</span>A</span>
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+<span id="cb1-10"><a href="#cb1-10" aria-hidden="true" tabindex="-1"></a> ER16<span class="op">(</span>B<span class="op">,</span> A<span class="op">,</span> i<span class="op">++)</span></span>
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+<span id="cb1-11"><a href="#cb1-11" aria-hidden="true" tabindex="-1"></a> rk<span class="op">[</span>i<span class="op">]=</span>A</span>
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+<span id="cb1-12"><a href="#cb1-12" aria-hidden="true" tabindex="-1"></a> ER16<span class="op">(</span>C<span class="op">,</span> A<span class="op">,</span> i<span class="op">++)</span></span>
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+<span id="cb1-13"><a href="#cb1-13" aria-hidden="true" tabindex="-1"></a> rk<span class="op">[</span>i<span class="op">]=</span>A</span>
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+<span id="cb1-14"><a href="#cb1-14" aria-hidden="true" tabindex="-1"></a> ER16<span class="op">(</span>D<span class="op">,</span> A<span class="op">,</span> i<span class="op">++)</span></span>
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+<span id="cb1-15"><a href="#cb1-15" aria-hidden="true" tabindex="-1"></a></span>
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+<span id="cb1-16"><a href="#cb1-16" aria-hidden="true" tabindex="-1"></a><span class="co">// Encryption</span></span>
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+<span id="cb1-17"><a href="#cb1-17" aria-hidden="true" tabindex="-1"></a>Ct<span class="op">[</span><span class="dv">0</span><span class="op">]=</span>Pt<span class="op">[</span><span class="dv">0</span><span class="op">];</span> Ct<span class="op">[</span><span class="dv">1</span><span class="op">]=</span>Pt<span class="op">[</span><span class="dv">1</span><span class="op">];</span></span>
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+<span id="cb1-18"><a href="#cb1-18" aria-hidden="true" tabindex="-1"></a></span>
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+<span id="cb1-19"><a href="#cb1-19" aria-hidden="true" tabindex="-1"></a><span class="cf">for</span> i in <span class="fl">0.</span><span class="er">.</span><span class="op"><</span><span class="dv">22</span></span>
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+<span id="cb1-20"><a href="#cb1-20" aria-hidden="true" tabindex="-1"></a> ER16<span class="op">(</span>Ct<span class="op">[</span><span class="dv">1</span><span class="op">],</span> Ct<span class="op">[</span><span class="dv">0</span><span class="op">],</span> rk<span class="op">[</span>i<span class="op">++])</span></span></code></pre></div>
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+</section>
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+<section id="speck---möglicher-angriff" class="slide level1">
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+<h1>Speck - Möglicher Angriff</h1>
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+<ul>
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+<li>Angriff der Rundenfunktion</li>
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+<li>ADD/XOR/ROT Operationen</li>
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+</ul>
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+<div class="sourceCode" id="cb2"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="dt">void</span> FuncER16<span class="op">(</span>u16 <span class="op">*</span>x<span class="op">,</span> u16 <span class="op">*</span>y<span class="op">,</span> u16 k<span class="op">)</span></span>
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+<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a><span class="op">{</span></span>
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+<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a> u16 tmp_x <span class="op">=</span> <span class="op">*</span>x<span class="op">;</span></span>
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+<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a> u16 tmp_y <span class="op">=</span> <span class="op">*</span>y<span class="op">;</span></span>
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+<span id="cb2-5"><a href="#cb2-5" aria-hidden="true" tabindex="-1"></a></span>
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+<span id="cb2-6"><a href="#cb2-6" aria-hidden="true" tabindex="-1"></a> <span class="op">*</span>x <span class="op">=</span> <span class="op">(((</span>tmp_x<span class="op">)>>(</span><span class="dv">7</span><span class="op">))</span> <span class="op">|</span> <span class="op">((</span>tmp_x<span class="op">)<<(</span><span class="dv">16</span><span class="op">-(</span><span class="dv">7</span><span class="op">))));</span> <span class="co">// ROR(7)</span></span>
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+<span id="cb2-7"><a href="#cb2-7" aria-hidden="true" tabindex="-1"></a> <span class="op">*</span>x <span class="op">+=</span> <span class="op">*</span>y<span class="op">;</span></span>
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+<span id="cb2-8"><a href="#cb2-8" aria-hidden="true" tabindex="-1"></a></span>
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+<span id="cb2-9"><a href="#cb2-9" aria-hidden="true" tabindex="-1"></a> <span class="op">*</span>x <span class="op">=</span> <span class="op">*</span>x <span class="op">^</span> k<span class="op">;</span></span>
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+<span id="cb2-10"><a href="#cb2-10" aria-hidden="true" tabindex="-1"></a></span>
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+<span id="cb2-11"><a href="#cb2-11" aria-hidden="true" tabindex="-1"></a> <span class="op">*</span>y <span class="op">=</span> <span class="op">(((</span>tmp_y<span class="op">)<<(</span><span class="dv">2</span><span class="op">))</span> <span class="op">|</span> <span class="op">(</span>tmp_y<span class="op">>>(</span><span class="dv">16</span><span class="op">-(</span><span class="dv">2</span><span class="op">))));</span> <span class="co">// ROL(2)</span></span>
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+<span id="cb2-12"><a href="#cb2-12" aria-hidden="true" tabindex="-1"></a> <span class="op">*</span>y <span class="op">=</span> <span class="op">*</span>y <span class="op">^</span> <span class="op">*</span>x<span class="op">;</span></span>
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+<span id="cb2-13"><a href="#cb2-13" aria-hidden="true" tabindex="-1"></a><span class="op">}</span></span></code></pre></div>
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+</section>
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+<section id="speck---möglicher-angriff-1" class="slide level1">
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+<h1>Speck - Möglicher Angriff</h1>
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+<ul>
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+<li>Der Roundkey steckt in der XOR Operation</li>
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|
|
+</ul>
|
|
|
+<p><img data-src="img/er16_annot.png" /></p>
|
|
|
+</section>
|
|
|
+<section id="correlation-power-analysis" class="slide level1">
|
|
|
+<h1>Correlation Power Analysis</h1>
|
|
|
+<ul>
|
|
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+<li>Variante von Differential Power Analysis (DPA)</li>
|
|
|
+<li>Nutzt Pearson Correlation Coefficient (PCC)</li>
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|
|
+<li><strong>Bei Speck:</strong> Korrelation zwischen Power-Trace und Key</li>
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|
|
+</ul>
|
|
|
+</section>
|
|
|
+<section id="theoretischer-angriff" class="slide level1">
|
|
|
+<h1>Theoretischer Angriff</h1>
|
|
|
+</section>
|
|
|
+<section id="speck---modell" class="slide level1">
|
|
|
+<h1>Speck - Modell</h1>
|
|
|
+</section>
|
|
|
+<section id="hamming-weight" class="slide level1">
|
|
|
+<h1>Hamming Weight</h1>
|
|
|
+</section>
|
|
|
+<section id="t-test" class="slide level1">
|
|
|
+<h1>T-Test</h1>
|
|
|
+</section>
|
|
|
+<section id="angriff" class="slide level1">
|
|
|
+<h1>Angriff</h1>
|
|
|
+</section>
|
|
|
+<section id="gegenmaßnahmen" class="slide level1">
|
|
|
+<h1>Gegenmaßnahmen</h1>
|
|
|
+</section>
|
|
|
+<section id="hiding" class="slide level1">
|
|
|
+<h1>Hiding</h1>
|
|
|
+</section>
|
|
|
+<section id="hiding---code" class="slide level1">
|
|
|
+<h1>Hiding - Code</h1>
|
|
|
+</section>
|
|
|
+<section id="hiding---t-test" class="slide level1">
|
|
|
+<h1>Hiding - T-Test</h1>
|
|
|
+</section>
|
|
|
+<section id="korrelationen" class="slide level1">
|
|
|
+<h1>Korrelationen</h1>
|
|
|
+</section>
|
|
|
+<section id="referenzen" class="slide level1">
|
|
|
+<h1>Referenzen</h1>
|
|
|
+</section>
|
|
|
+ </div>
|
|
|
+ </div>
|
|
|
+
|
|
|
+ <script src="./reveal.js/dist/reveal.js"></script>
|
|
|
+
|
|
|
+
|
|
|
+ <script src="./reveal.js/plugin/notes/notes.js"></script>
|
|
|
+ <script src="./reveal.js/plugin/search/search.js"></script>
|
|
|
+ <script src="./reveal.js/plugin/zoom/zoom.js"></script>
|
|
|
+
|
|
|
+ <script>
|
|
|
+
|
|
|
+ // Full list of configuration options available at:
|
|
|
+ // https://revealjs.com/config/
|
|
|
+ Reveal.initialize({
|
|
|
+ // Display controls in the bottom right corner
|
|
|
+ controls: true,
|
|
|
+
|
|
|
+ // Help the user learn the controls by providing hints, for example by
|
|
|
+ // bouncing the down arrow when they first encounter a vertical slide
|
|
|
+ controlsTutorial: true,
|
|
|
+
|
|
|
+ // Determines where controls appear, "edges" or "bottom-right"
|
|
|
+ controlsLayout: 'bottom-right',
|
|
|
+
|
|
|
+ // Visibility rule for backwards navigation arrows; "faded", "hidden"
|
|
|
+ // or "visible"
|
|
|
+ controlsBackArrows: 'faded',
|
|
|
+
|
|
|
+ // Display a presentation progress bar
|
|
|
+ progress: true,
|
|
|
+
|
|
|
+ // Display the page number of the current slide
|
|
|
+ slideNumber: true,
|
|
|
+
|
|
|
+ // 'all', 'print', or 'speaker'
|
|
|
+ showSlideNumber: 'all',
|
|
|
+
|
|
|
+ // Add the current slide number to the URL hash so that reloading the
|
|
|
+ // page/copying the URL will return you to the same slide
|
|
|
+ hash: false,
|
|
|
+
|
|
|
+ // Start with 1 for the hash rather than 0
|
|
|
+ hashOneBasedIndex: false,
|
|
|
+
|
|
|
+ // Flags if we should monitor the hash and change slides accordingly
|
|
|
+ respondToHashChanges: true,
|
|
|
+
|
|
|
+ // Push each slide change to the browser history
|
|
|
+ history: false,
|
|
|
+
|
|
|
+ // Enable keyboard shortcuts for navigation
|
|
|
+ keyboard: true,
|
|
|
+
|
|
|
+ // Enable the slide overview mode
|
|
|
+ overview: true,
|
|
|
+
|
|
|
+ // Disables the default reveal.js slide layout (scaling and centering)
|
|
|
+ // so that you can use custom CSS layout
|
|
|
+ disableLayout: false,
|
|
|
+
|
|
|
+ // Vertical centering of slides
|
|
|
+ center: true,
|
|
|
+
|
|
|
+ // Enables touch navigation on devices with touch input
|
|
|
+ touch: true,
|
|
|
+
|
|
|
+ // Loop the presentation
|
|
|
+ loop: false,
|
|
|
+
|
|
|
+ // Change the presentation direction to be RTL
|
|
|
+ rtl: false,
|
|
|
+
|
|
|
+ // see https://revealjs.com/vertical-slides/#navigation-mode
|
|
|
+ navigationMode: 'default',
|
|
|
+
|
|
|
+ // Randomizes the order of slides each time the presentation loads
|
|
|
+ shuffle: false,
|
|
|
+
|
|
|
+ // Turns fragments on and off globally
|
|
|
+ fragments: true,
|
|
|
+
|
|
|
+ // Flags whether to include the current fragment in the URL,
|
|
|
+ // so that reloading brings you to the same fragment position
|
|
|
+ fragmentInURL: true,
|
|
|
+
|
|
|
+ // Flags if the presentation is running in an embedded mode,
|
|
|
+ // i.e. contained within a limited portion of the screen
|
|
|
+ embedded: false,
|
|
|
+
|
|
|
+ // Flags if we should show a help overlay when the questionmark
|
|
|
+ // key is pressed
|
|
|
+ help: true,
|
|
|
+
|
|
|
+ // Flags if it should be possible to pause the presentation (blackout)
|
|
|
+ pause: true,
|
|
|
+
|
|
|
+ // Flags if speaker notes should be visible to all viewers
|
|
|
+ showNotes: false,
|
|
|
+
|
|
|
+ // Global override for autoplaying embedded media (null/true/false)
|
|
|
+ autoPlayMedia: null,
|
|
|
+
|
|
|
+ // Global override for preloading lazy-loaded iframes (null/true/false)
|
|
|
+ preloadIframes: null,
|
|
|
+
|
|
|
+ // Number of milliseconds between automatically proceeding to the
|
|
|
+ // next slide, disabled when set to 0, this value can be overwritten
|
|
|
+ // by using a data-autoslide attribute on your slides
|
|
|
+ autoSlide: 0,
|
|
|
+
|
|
|
+ // Stop auto-sliding after user input
|
|
|
+ autoSlideStoppable: true,
|
|
|
+
|
|
|
+ // Use this method for navigation when auto-sliding
|
|
|
+ autoSlideMethod: null,
|
|
|
+
|
|
|
+ // Specify the average time in seconds that you think you will spend
|
|
|
+ // presenting each slide. This is used to show a pacing timer in the
|
|
|
+ // speaker view
|
|
|
+ defaultTiming: null,
|
|
|
+
|
|
|
+ // Enable slide navigation via mouse wheel
|
|
|
+ mouseWheel: false,
|
|
|
+
|
|
|
+ // The display mode that will be used to show slides
|
|
|
+ display: 'block',
|
|
|
+
|
|
|
+ // Hide cursor if inactive
|
|
|
+ hideInactiveCursor: true,
|
|
|
+
|
|
|
+ // Time before the cursor is hidden (in ms)
|
|
|
+ hideCursorTime: 5000,
|
|
|
+
|
|
|
+ // Opens links in an iframe preview overlay
|
|
|
+ previewLinks: false,
|
|
|
+
|
|
|
+ // Transition style (none/fade/slide/convex/concave/zoom)
|
|
|
+ transition: 'slide',
|
|
|
+
|
|
|
+ // Transition speed (default/fast/slow)
|
|
|
+ transitionSpeed: 'default',
|
|
|
+
|
|
|
+ // Transition style for full page slide backgrounds
|
|
|
+ // (none/fade/slide/convex/concave/zoom)
|
|
|
+ backgroundTransition: 'fade',
|
|
|
+
|
|
|
+ // Number of slides away from the current that are visible
|
|
|
+ viewDistance: 3,
|
|
|
+
|
|
|
+ // Number of slides away from the current that are visible on mobile
|
|
|
+ // devices. It is advisable to set this to a lower number than
|
|
|
+ // viewDistance in order to save resources.
|
|
|
+ mobileViewDistance: 2,
|
|
|
+
|
|
|
+ // reveal.js plugins
|
|
|
+ plugins: [
|
|
|
+ RevealNotes,
|
|
|
+ RevealSearch,
|
|
|
+ RevealZoom
|
|
|
+ ]
|
|
|
+ });
|
|
|
+ </script>
|
|
|
+ </body>
|
|
|
+</html>
|
Hans Martin
