<h1 id="kevinslin"><a aria-hidden="true" class="anchor-heading icon-link" href="#kevinslin"></a>Kevinslin</h1>
<h3 id="notes-by-kevin"><a aria-hidden="true" class="anchor-heading icon-link" href="#notes-by-kevin"></a>Notes by <a href="https://github.com/kevinslin">kevin</a></h3>
<ul>
<li>
<p>disclaimer: don't try this at home</p>
</li>
<li>
<p>symmetric keys: everyone has key</p>
</li>
<li>
<p>asymmetric key (public key cryptography): only share public key</p>
</li>
<li>
<p>one way functions: hard to reverse operation</p>
</li>
<li>
<p>pseudorandom number generators: sources of entrophy</p>
</li>
<li>
<p>rsa</p>
<ul>
<li>great when it came out, not recommended anymore</li>
</ul>
</li>
<li>
<p>modular arithmetic</p>
<ul>
<li>% operator in javascript</li>
</ul>
</li>
<li>
<p>elliptic curve cryptography (ecc)</p>
</li>
<li>
<p>why ecc</p>
<ul>
<li>rsa needed to increase bit length to make stronger</li>
<li>ecc scales better</li>
</ul>
</li>
<li>
<p>diffie hellman key exchange</p>
<ul>
<li>agree over symmetric key in insecure channel</li>
<li>eg. ssh </li>
</ul>
</li>
<li>
<p>web crypto api</p>
<ul>
<li>built into browser</li>
</ul>
</li>
<li>
<p>nsa backdoor</p>
<ul>
<li>pseudo random number generator that is broken by design</li>
<li>believed that nsa has backdoor</li>
</ul>
</li>
<li>
<p>sigstore</p>
<ul>
<li>new standard for signing, verifying, and protecting software</li>
<li>lets encrypt for signing</li>
</ul>
</li>
</ul>

Kevinslin

cascadia-js-2022


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Kevinslin

Notes by kevin