<?xml version="1.0"?>
<oembed><version>1.0</version><provider_name>Edexcel iGCSE Computer Science</provider_name><provider_url>https://learnlearn.uk/edexcel-igcse-computer-science</provider_url><author_name>learnlearnadmin</author_name><author_url>https://learnlearn.uk/edexcel-igcse-computer-science/author/learnlearnadmin/</author_url><title>Caesar Cipher - Edexcel iGCSE Computer Science</title><type>rich</type><width>600</width><height>338</height><html>&lt;blockquote class="wp-embedded-content" data-secret="jTwDQFJYbO"&gt;&lt;a href="https://learnlearn.uk/edexcel-igcse-computer-science/caesar-cipher/"&gt;Caesar Cipher&lt;/a&gt;&lt;/blockquote&gt;&lt;iframe sandbox="allow-scripts" security="restricted" src="https://learnlearn.uk/edexcel-igcse-computer-science/caesar-cipher/embed/#?secret=jTwDQFJYbO" width="600" height="338" title="&#x201C;Caesar Cipher&#x201D; &#x2014; Edexcel iGCSE Computer Science" data-secret="jTwDQFJYbO" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"&gt;&lt;/iframe&gt;&lt;script&gt;
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&amp;&amp;d.addEventListener&amp;&amp;"undefined"!=typeof URL&amp;&amp;(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&amp;&amp;!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i&lt;o.length;i++)o[i].style.display="none";for(i=0;i&lt;a.length;i++)s=a[i],e.source===s.contentWindow&amp;&amp;(s.removeAttribute("style"),"height"===t.message?(1e3&lt;(r=parseInt(t.value,10))?r=1e3:~~r&lt;200&amp;&amp;(r=200),s.height=r):"link"===t.message&amp;&amp;(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&amp;&amp;n.host===r.host&amp;&amp;l.activeElement===s&amp;&amp;(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r&lt;s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document);
//# sourceURL=https://learnlearn.uk/edexcel-igcse-computer-science/wp-includes/js/wp-embed.min.js
&lt;/script&gt;
</html><description>Encryption Algorithms What is encryption? Encryption is the scrambling of data so that only the intended recipient of data can decode and read it. In the starter you successfully decrypted anagrams to read the hidden word. This is a form (albeit very weak!!!) of encryption! What is it used for? Encryption is used for a&hellip;&nbsp;Read More &raquo;</description><thumbnail_url>http://learnlearn.uk/algorithms/wp-content/uploads/sites/12/2017/01/caesar-shift-3-shift.png</thumbnail_url></oembed>
