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06-crypto.html
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06-crypto.html
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<!DOCTYPE html><html lang="en-US"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width,height=device-height,initial-scale=1.0"><meta name="apple-mobile-web-app-capable" content="yes"><meta http-equiv="X-UA-Compatible" content="ie=edge"><meta property="og:type" content="website"><meta name="twitter:card" content="summary"><style>@media screen{body[data-bespoke-view=""] .bespoke-marp-parent>.bespoke-marp-osc>button,body[data-bespoke-view=next] .bespoke-marp-parent>.bespoke-marp-osc>button,body[data-bespoke-view=presenter] .bespoke-marp-presenter-container .bespoke-marp-presenter-info-container button,body[data-bespoke-view=presenter] .bespoke-marp-presenter-container .bespoke-marp-presenter-note-container button{-webkit-tap-highlight-color:transparent;-webkit-appearance:none;appearance:none;background-color:transparent;border:0;color:inherit;cursor:pointer;font-size:inherit;opacity:.8;outline:none;padding:0;transition:opacity .2s linear}body[data-bespoke-view=""] 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/*!
* Marp default theme.
*
* @theme default
* @author Yuki Hattori
*
* @auto-scaling true
* @size 16:9 1280px 720px
* @size 4:3 960px 720px
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slide">Next slide</button><button data-bespoke-marp-osc="fullscreen" tabindex="-1" title="Toggle fullscreen (f)">Toggle fullscreen</button><button data-bespoke-marp-osc="presenter" tabindex="-1" title="Open presenter view (p)">Open presenter view</button></div><div id="p"><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="1">
<h1>Криптография: шифры, подписи, хэши</h1>
<video autoplay="on" loop="on" src="media/mycrypto.mp4"/>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-marpit-advanced-background="background" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("media/tarabar.jpg");background-size:contain;"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="2" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;">
<h2>Древние</h2>
<ul>
<li>Аристотель - криптоаналитик</li>
<li>цезарь</li>
<li>тарабарщина</li>
</ul>
<pre is="marp-pre" data-auto-scaling="downscale-only"><code>б в г д ж з к л м н
щ ш ч ц х ф т с р п
</code></pre>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section data-marpit-advanced-background="pseudo" data-marpit-advanced-background-split="right" style=""></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-marpit-advanced-background="background" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("media/chiffre.png");background-size:contain;"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="3" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;">
<h2>Grand Chiffre</h2>
<ul>
<li>Rossignol</li>
<li>слоговый шифр</li>
<li>131/711 это "e"</li>
</ul>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section data-marpit-advanced-background="pseudo" data-marpit-advanced-background-split="right" style=""></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-marpit-advanced-background="background" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("media/samsonov.jpg");background-size:contain;"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="4" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;">
<h2>WWI Танненберг</h2>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section data-marpit-advanced-background="pseudo" data-marpit-advanced-background-split="right" style=""></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-marpit-advanced-background="background" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("media/enigma.jpg");background-size:contain;"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="5" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;">
<h2>Роторные и enigma</h2>
<ul>
<li>ввод/вывод</li>
<li><a href="https://www.quora.com/How-exactly-did-the-Enigma-machine-work-How-did-the-plugboard-and-the-rotors-change-the-letters/answer/Werner-Hermann-3">роторы</a></li>
<li>рефлектор</li>
<li>штекеры</li>
</ul>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section data-marpit-advanced-background="pseudo" data-marpit-advanced-background-split="right" style=""></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-marpit-advanced-background="background" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("media/enigma2.jpeg");background-size:contain;"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="6" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;">
<h2>Роторные и enigma (2)</h2>
<ul>
<li>уязвимость - штекеры</li>
<li>уязвимость - рефлектор</li>
<li>уязвимость - роторы</li>
</ul>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section data-marpit-advanced-background="pseudo" data-marpit-advanced-background-split="right" style=""></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-marpit-advanced-background="background" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("media/cryptoag.webp");background-size:contain;"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="7" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;">
<h2>Crypto AG</h2>
<ul>
<li>Хагелин и Фридман, 1955</li>
<li>1970 CIA&BND</li>
<li>“too bright to remain unwitting”</li>
<li>Палево</li>
</ul>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section data-marpit-advanced-background="pseudo" data-marpit-advanced-background-split="right" style=""></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="8">
<h2>Примитив: хэш-функция</h2>
<ol>
<li>быстро считается</li>
<li>невозможно подобрать данные под хэш</li>
<li><mjx-container class="MathJax" jax="SVG"><svg style="vertical-align: -0.566ex;" xmlns="http://www.w3.org/2000/svg" width="22.716ex" height="2.262ex" role="img" focusable="false" viewBox="0 -750 10040.7 1000"><g stroke="currentColor" fill="currentColor" stroke-width="0" transform="scale(1,-1)"><g data-mml-node="math"><g data-mml-node="mi"><path data-c="210E" d="M137 683Q138 683 209 688T282 694Q294 694 294 685Q294 674 258 534Q220 386 220 383Q220 381 227 388Q288 442 357 442Q411 442 444 415T478 336Q478 285 440 178T402 50Q403 36 407 31T422 26Q450 26 474 56T513 138Q516 149 519 151T535 153Q555 153 555 145Q555 144 551 130Q535 71 500 33Q466 -10 419 -10H414Q367 -10 346 17T325 74Q325 90 361 192T398 345Q398 404 354 404H349Q266 404 205 306L198 293L164 158Q132 28 127 16Q114 -11 83 -11Q69 -11 59 -2T48 16Q48 30 121 320L195 616Q195 629 188 632T149 637H128Q122 643 122 645T124 664Q129 683 137 683Z"></path></g><g data-mml-node="mo" transform="translate(576,0)"><path data-c="28" d="M94 250Q94 319 104 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transform="translate(9611.7,0)"><path data-c="1D44F" d="M73 647Q73 657 77 670T89 683Q90 683 161 688T234 694Q246 694 246 685T212 542Q204 508 195 472T180 418L176 399Q176 396 182 402Q231 442 283 442Q345 442 383 396T422 280Q422 169 343 79T173 -11Q123 -11 82 27T40 150V159Q40 180 48 217T97 414Q147 611 147 623T109 637Q104 637 101 637H96Q86 637 83 637T76 640T73 647ZM336 325V331Q336 405 275 405Q258 405 240 397T207 376T181 352T163 330L157 322L136 236Q114 150 114 114Q114 66 138 42Q154 26 178 26Q211 26 245 58Q270 81 285 114T318 219Q336 291 336 325Z"></path></g></g></g></svg></mjx-container></li>
<li>эффект лавины</li>
</ol>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-marpit-advanced-background="background" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("media/feistel.png");"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="9" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;">
<h2>Блочные симметричные</h2>
<ul>
<li>SP-сеть</li>
<li>Фейстель</li>
<li>режим работы блочного шифра</li>
<li>ГОСТ <a href="https://habr.com/ru/post/530816/?ysclid=l9l190ann207151473">Кузнечик, Магма</a></li>
</ul>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section data-marpit-advanced-background="pseudo" data-marpit-advanced-background-split="right" style=""></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="10">
<h2>Поточные симметричные шифры</h2>
<ul>
<li>гамма</li>
<li>теорема Шеннона+333</li>
<li>Бернштейн: Salsa, ChaCha</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="11">
<h2>Асимметричные</h2>
<ul>
<li>RSA</li>
<li>заплатки</li>
<li>Elliptic Curve</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-marpit-advanced-background="background" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("media/dh.svg");background-size:contain;"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="12" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right" style="--marpit-advanced-background-split:50%;">
<h2>Обмен ключами</h2>
<ul>
<li>Классика</li>
<li>Diffie-Hellman</li>
<li>Привет от Сноудена</li>
<li><a href="https://weakdh.org/">LogJam</a></li>
<li>PKI</li>
</ul>
</section>
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<h2>Конструкции Меркла</h2>
<ul>
<li>Эффект лавины-лавины</li>
</ul>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section data-marpit-advanced-background="pseudo" data-marpit-advanced-background-split="right" style=""></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="14">
<h2>Выводы</h2>
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<li>NOBUS</li>
<li>Подстава - норма жизни</li>
<li>Проверка практикой (ZKP)</li>
<li>Граничные условия</li>
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<h2>Практика: разбор libsodium</h2>
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<h2>Практика: разбор OpenSSL</h2>
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<ol start="10">
<li>общая ситуация (NSA, Бернштейн, МО РФ)</li>
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<li>Симметричные шифры</li>
<li>
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<li>Блочные</li>
</ul>
</li>
<li>
<ul>
<li>
<ul>
<li>Режимы шифрования (ECB, CBC и т.д.)</li>
</ul>
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</ul>
</li>
<li>
<ul>
<li>
<ul>
<li>Сеть Фейстеля (DES)</li>
</ul>
</li>
</ul>
</li>
<li>
<ul>
<li>
<ul>
<li>SPN (AES)</li>
</ul>
</li>
</ul>
</li>
<li>
<ul>
<li>Потоковые</li>
</ul>
</li>
<li>
<ul>
<li>
<ul>
<li>Генераторы псевдослучайных последовательностей (LFSR)</li>
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</ul>
</li>
<li>
<ul>
<li>
<ul>
<li>Гаммирование (RC4)</li>
</ul>
</li>
</ul>
</li>
<li>Асиметричные (Rabin, RSA)</li>
<li>Обмен ключами (Diffie–Hellman)</li>
<li>Конструкции Мёркла</li>
</ul>
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