{"id":187709,"date":"2024-08-12T15:41:09","date_gmt":"2024-08-12T14:41:09","guid":{"rendered":"https:\/\/datascientest.com\/en\/?p=187709"},"modified":"2024-08-12T15:41:11","modified_gmt":"2024-08-12T14:41:11","slug":"all-about-cryptography","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/all-about-cryptography","title":{"rendered":"Cryptography: What is it? How does it work?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"187709\" class=\"elementor elementor-187709\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0582233 e-flex e-con-boxed e-con\" data-id=\"0582233\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-43c6121 elementor-widget elementor-widget-heading\" data-id=\"43c6121\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><p class=\"elementor-heading-title elementor-size-default\">We all have the right to privacy... Whether on a personal or professional level, it is nonetheless reassuring to know that not just anyone can access certain documents we have created or shared. And the science that ensures this protection is cryptography.<\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e5b54b7 e-flex e-con-boxed e-con\" data-id=\"e5b54b7\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c0d7f01 elementor-widget elementor-widget-heading\" data-id=\"c0d7f01\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">The origins of cryptography<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a742905 elementor-widget elementor-widget-text-editor\" data-id=\"a742905\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><span style=\"font-weight: 400;\">Cryptography involves mathematically encoding a text to transform it from a readable form to an unintelligible form \u2013 known as an <\/span><b>\u201cencrypted\u201d<\/b><span style=\"font-weight: 400;\"> text.<\/span><\/p><p><span style=\"font-weight: 400;\">Cryptography techniques are far from new. They have their origins in the <\/span><b>exchange of sensitive information<\/b><span style=\"font-weight: 400;\"> among military and political figures or in commerce. As early as the 1st century B.C., Julius Caesar attempted to make his messages indecipherable by shifting each letter three positions in the alphabet.<\/span><\/p><p><span style=\"font-weight: 400;\">While each era has seen cryptography methods become more refined, a major milestone was reached in 1943 when, under the impetus of mathematician <\/span><b>Alan Turing<\/b><span style=\"font-weight: 400;\">, a computer developed at <\/span><b>Bletchley Park<\/b><span style=\"font-weight: 400;\"> under the direction of the British government was dedicated to this task. Thanks to their computing power, computers are capable of creating extraordinarily complex <\/span><b>obfuscation<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Initially reserved for the military domain, cryptographic tools have become a <\/span><i><span style=\"font-weight: 400;\">sine qua non<\/span><\/i><span style=\"font-weight: 400;\"> condition for e-commerce and many other internet-related activities. They are used in the <strong>HTTPS protocol<\/strong> that secures websites, financial transactions involving currencies like bitcoin, voice communications, etc.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0beeead elementor-widget elementor-widget-image\" data-id=\"0beeead\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"900\" height=\"514\" src=\"https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography2.jpg\" class=\"attachment-full size-full wp-image-187715\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography2.jpg 900w, https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography2-300x171.jpg 300w, https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography2-768x439.jpg 768w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b69d8a elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"3b69d8a\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Discover our courses<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-193640e e-flex e-con-boxed e-con\" data-id=\"193640e\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4cf67de elementor-widget elementor-widget-heading\" data-id=\"4cf67de\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">The principles of encryption<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28abbc6 elementor-widget elementor-widget-text-editor\" data-id=\"28abbc6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">An <b>encryption<\/b> <a href=\"https:\/\/datascientest.com\/en\/algorithm-what-is-it\"><b>algorithm<\/b><\/a> converts a plain message into an <\/span><b>encrypted (scrambled) text<\/b><span style=\"font-weight: 400;\">. It relies on advanced mathematics and the use of one or more keys (the equivalent of secret digital signatures, very long sequences of prime numbers).<\/span><\/p><p><span style=\"font-weight: 400;\">When encrypting a particular content, the key is used to transform the data according to a specific algorithm to hide certain content from prying eyes. The higher the <\/span><b>number of bits in the encryption key<\/b><span style=\"font-weight: 400;\">, the more difficult the message will be to decipher.<\/span><\/p><p><span style=\"font-weight: 400;\">Once the message is received, it is decrypted by the recipient and reconverted into a readable form. In both cases \u2013 sending and receiving \u2013 <\/span><b>encryption<\/b><span style=\"font-weight: 400;\"> and <\/span><b>decryption<\/b><span style=\"font-weight: 400;\"> are performed using secret &#8220;keys&#8221;.<\/span><\/p><p><span style=\"font-weight: 400;\">However, several types of approaches are employed, mainly the symmetric and asymmetric modes.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-926e9bf e-flex e-con-boxed e-con\" data-id=\"926e9bf\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eea9788 elementor-widget elementor-widget-heading\" data-id=\"eea9788\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Symmetric encryption<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1875814 elementor-widget elementor-widget-text-editor\" data-id=\"1875814\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><b>Symmetric encryption<\/b><span style=\"font-weight: 400;\"> involves encrypting and decrypting content with a single <\/span><b>secret key<\/b><span style=\"font-weight: 400;\"> known only to the parties involved. One of the most popular encryptions in this field, especially in the industrial world, is the <\/span><b>AES standard<\/b><span style=\"font-weight: 400;\">, which supports <\/span><b>128, 192, or 256-bit keys<\/b><span style=\"font-weight: 400;\">. It is often combined with the <\/span><b>Galois\/Counter Mode (GCM)<\/b><span style=\"font-weight: 400;\"> and thus known as AES-GCM. Although its security is verified, the only issue is that this type of encryption requires all parties involved in a particular message or document to have access to the same shared key.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c98ddae e-flex e-con-boxed e-con\" data-id=\"c98ddae\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-396bdc0 elementor-widget elementor-widget-heading\" data-id=\"396bdc0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Asymmetric encryption, private and public keys<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f02e0da elementor-widget elementor-widget-text-editor\" data-id=\"f02e0da\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><b>Asymmetric encryption<\/b><span style=\"font-weight: 400;\"> is more sophisticated. In this context, it is necessary first for each recipient to have a <\/span><b>private key<\/b><span style=\"font-weight: 400;\"> unique to them, which is an ultra-complex string of numbers that must remain secret at all costs. This encryption scheme uses a second key \u2013 the <\/span><b>public key<\/b><span style=\"font-weight: 400;\"> \u2013 to encrypt the data, this key being mathematically derived from the <\/span><b>private key<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">The public key is used to <\/span><b>encrypt the message<\/b><span style=\"font-weight: 400;\"> but also to identify its author. The <\/span><b>signature<\/b><span style=\"font-weight: 400;\"> thus generated is attached to the document and sent to the recipient, who is also identified by another public key. However, the recipient will need to use their private key to <\/span><b>decrypt the message<\/b><span style=\"font-weight: 400;\">. Anyone attempting to decrypt the message would not be able to do so because they do not have access to this private key. Asymmetric encryption thus avoids both people involved from having to share the same secret key.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b585a4 elementor-widget elementor-widget-image\" data-id=\"0b585a4\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"900\" height=\"514\" src=\"https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography1.jpg\" class=\"attachment-full size-full wp-image-187719\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography1.jpg 900w, https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography1-300x171.jpg 300w, https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography1-768x439.jpg 768w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46574c1 elementor-widget elementor-widget-text-editor\" data-id=\"46574c1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"text-decoration: underline;\"><b>To summarize<\/b><\/span><\/p><p><span style=\"font-weight: 400;\">With asymmetric encryption, each user has two keys:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A private key, which must be kept secret.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A public key derived from the private key and which can be visible to all.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The public key is mathematically derived from the private key. However, the reverse process is virtually impossible. In other words, finding the private key from the public key would require tests of an immeasurable duration.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cbab054 elementor-widget elementor-widget-text-editor\" data-id=\"cbab054\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A commonly used algorithm is the <\/span><b>Rivest-Shamir-Adleman (RSA) function<\/b><span style=\"font-weight: 400;\"> with the probabilistic signature scheme (RSA-PSS) and the <\/span><b>Digital Signature Algorithm (DSA)<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-baebf37 e-flex e-con-boxed e-con\" data-id=\"baebf37\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-384a934 elementor-widget elementor-widget-heading\" data-id=\"384a934\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Post-quantum cryptography<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ed9eaa elementor-widget elementor-widget-text-editor\" data-id=\"6ed9eaa\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">As long as a person&#8217;s private key is not disclosed, <\/span><b>data<\/b><span style=\"font-weight: 400;\"> and message <\/span><b>encryption<\/b><span style=\"font-weight: 400;\"> is inviolable. And so far, this mechanism has more than proven itself.<\/span><\/p><p><span style=\"font-weight: 400;\">One question remains: <a href=\"https:\/\/datascientest.com\/en\/all-about-quantum-computers\">quantum computers<\/a> seem poised to <\/span><b>solve mathematical problems unsolvable by classical computers<\/b><span style=\"font-weight: 400;\"> and could, in the future, decrypt documents encrypted with asymmetric algorithms such as RSA. This means that sooner or later, we will need to develop <\/span><b>new encryption algorithms<\/b><span style=\"font-weight: 400;\"> far more advanced than those we use today&#8230;<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-639cc1a elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"639cc1a\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Find a course for you<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d7440db e-flex e-con-boxed e-con\" data-id=\"d7440db\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cd9650a elementor-widget elementor-widget-html\" data-id=\"cd9650a\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"The origins of cryptography\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"As early as the 1st century B.C., Julius Caesar attempted to make his messages indecipherable by shifting each letter three positions in the alphabet. Each era saw cryptography methods refined, with a major milestone reached in 1943 when, under the impetus of mathematician Alan Turing, a computer developed at Bletchley Park by the British government was dedicated to this task.\"\r\n    }\r\n  },{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"The principles of encryption\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"It relies on advanced mathematics and the use of one or more keys (equivalent to secret digital signatures, which are very long sequences of prime numbers).\"\r\n    }\r\n  },{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Symmetric encryption\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Symmetric encryption involves encrypting and decrypting content with a single secret key, known only to the interested parties.\"\r\n    }\r\n  },{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Asymmetric encryption\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"This encryption scheme uses a second key \u2013 the public key \u2013 to encrypt data, which is mathematically derived from the private key.\"\r\n    }\r\n  },{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Post-quantum cryptography\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Quantum computers seem poised to solve mathematical problems unsolvable by classical computers, and they could eventually decrypt documents encoded with asymmetric algorithms.\"\r\n    }\r\n  }]\r\n}\r\n<\/script>\r\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>We all have the right to privacy&#8230; Whether on a personal or professional level, it is nonetheless reassuring to know that not just anyone can access certain documents we have created or shared. And the science that ensures this protection is cryptography. The origins of cryptography Cryptography involves mathematically encoding a text to transform it [&hellip;]<\/p>\n","protected":false},"author":45,"featured_media":187711,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2426],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cryptography: What is it? How does it work?<\/title>\n<meta name=\"description\" content=\"Discover the fundamental principles of cryptography, an essential science for the security of digital data. This article explores its history, modern encryption techniques, and practical applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/datascientest.com\/en\/all-about-cryptography\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cryptography: What is it? How does it work?\" \/>\n<meta property=\"og:description\" content=\"We all have the right to privacy... Whether on a personal or professional level, it is nonetheless reassuring to know that not just anyone can access\" \/>\n<meta property=\"og:url\" content=\"https:\/\/datascientest.com\/en\/all-about-cryptography\" \/>\n<meta property=\"og:site_name\" content=\"Data Science Courses | DataScientest\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataScientestEN\" \/>\n<meta property=\"article:published_time\" content=\"2024-08-12T14:41:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-08-12T14:41:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"686\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Daniel\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataScientest__\" \/>\n<meta name=\"twitter:site\" content=\"@DataScientest__\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Daniel\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/datascientest.com\/en\/all-about-cryptography#article\",\"isPartOf\":{\"@id\":\"https:\/\/datascientest.com\/en\/all-about-cryptography\"},\"author\":{\"name\":\"Daniel\",\"@id\":\"https:\/\/datascientest.com\/en\/#\/schema\/person\/5a86e30c5090234fb43dd8baa83c44b0\"},\"headline\":\"Cryptography: What is it? How does it work?\",\"datePublished\":\"2024-08-12T14:41:09+00:00\",\"dateModified\":\"2024-08-12T14:41:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/datascientest.com\/en\/all-about-cryptography\"},\"wordCount\":771,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/datascientest.com\/en\/#organization\"},\"articleSection\":[\"Cybersecurity\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/datascientest.com\/en\/all-about-cryptography#respond\"]}],\"copyrightYear\":\"2024\",\"copyrightHolder\":{\"@id\":\"https:\/\/datascientest.com\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/datascientest.com\/en\/all-about-cryptography\",\"url\":\"https:\/\/datascientest.com\/en\/all-about-cryptography\",\"name\":\"Cryptography: What is it? How does it work?\",\"isPartOf\":{\"@id\":\"https:\/\/datascientest.com\/en\/#website\"},\"datePublished\":\"2024-08-12T14:41:09+00:00\",\"dateModified\":\"2024-08-12T14:41:11+00:00\",\"description\":\"Discover the fundamental principles of cryptography, an essential science for the security of digital data. This article explores its history, modern encryption techniques, and practical applications.\",\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/datascientest.com\/en\/all-about-cryptography\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/datascientest.com\/en\/#website\",\"url\":\"https:\/\/datascientest.com\/en\/\",\"name\":\"Data Science Courses | DataScientest\",\"description\":\"Leader in Data Science Courses\",\"publisher\":{\"@id\":\"https:\/\/datascientest.com\/en\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/datascientest.com\/en\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/datascientest.com\/en\/#organization\",\"name\":\"DataScientest\",\"url\":\"https:\/\/datascientest.com\/en\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/datascientest.com\/en\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/datascientest.com\/en\/wp-content\/blogs.dir\/9\/files\/2024\/02\/DataScientest_icon_blue-2.png\",\"contentUrl\":\"https:\/\/datascientest.com\/en\/wp-content\/blogs.dir\/9\/files\/2024\/02\/DataScientest_icon_blue-2.png\",\"width\":301,\"height\":301,\"caption\":\"DataScientest\"},\"image\":{\"@id\":\"https:\/\/datascientest.com\/en\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/DataScientestEN\",\"https:\/\/twitter.com\/DataScientest__\",\"https:\/\/www.linkedin.com\/school\/datascientest\/mycompany\/\",\"https:\/\/www.tiktok.com\/@datascientest\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/datascientest.com\/en\/#\/schema\/person\/5a86e30c5090234fb43dd8baa83c44b0\",\"name\":\"Daniel\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/datascientest.com\/en\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/837acad4f2dc47e85d81cce837261670?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/837acad4f2dc47e85d81cce837261670?s=96&d=mm&r=g\",\"caption\":\"Daniel\"},\"sameAs\":[\"https:\/\/www.linkedin.com\/school\/datascientest\/\",\"user\"],\"jobTitle\":\"ing\u00e9nieur logiciel\",\"worksFor\":\"DataScientest\",\"url\":\"https:\/\/datascientest.com\/en\/author\/team-redac\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Cryptography: What is it? How does it work?","description":"Discover the fundamental principles of cryptography, an essential science for the security of digital data. This article explores its history, modern encryption techniques, and practical applications.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/datascientest.com\/en\/all-about-cryptography","og_locale":"en_GB","og_type":"article","og_title":"Cryptography: What is it? How does it work?","og_description":"We all have the right to privacy... Whether on a personal or professional level, it is nonetheless reassuring to know that not just anyone can access","og_url":"https:\/\/datascientest.com\/en\/all-about-cryptography","og_site_name":"Data Science Courses | DataScientest","article_publisher":"https:\/\/www.facebook.com\/DataScientestEN","article_published_time":"2024-08-12T14:41:09+00:00","article_modified_time":"2024-08-12T14:41:11+00:00","og_image":[{"width":1200,"height":686,"url":"https:\/\/datascientest.com\/en\/files\/2024\/07\/datascientest-cryptography.jpg","type":"image\/jpeg"}],"author":"Daniel","twitter_card":"summary_large_image","twitter_creator":"@DataScientest__","twitter_site":"@DataScientest__","twitter_misc":{"Written by":"Daniel","Estimated reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/datascientest.com\/en\/all-about-cryptography#article","isPartOf":{"@id":"https:\/\/datascientest.com\/en\/all-about-cryptography"},"author":{"name":"Daniel","@id":"https:\/\/datascientest.com\/en\/#\/schema\/person\/5a86e30c5090234fb43dd8baa83c44b0"},"headline":"Cryptography: What is it? How does it work?","datePublished":"2024-08-12T14:41:09+00:00","dateModified":"2024-08-12T14:41:11+00:00","mainEntityOfPage":{"@id":"https:\/\/datascientest.com\/en\/all-about-cryptography"},"wordCount":771,"commentCount":0,"publisher":{"@id":"https:\/\/datascientest.com\/en\/#organization"},"articleSection":["Cybersecurity"],"inLanguage":"en-GB","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/datascientest.com\/en\/all-about-cryptography#respond"]}],"copyrightYear":"2024","copyrightHolder":{"@id":"https:\/\/datascientest.com\/#organization"}},{"@type":"WebPage","@id":"https:\/\/datascientest.com\/en\/all-about-cryptography","url":"https:\/\/datascientest.com\/en\/all-about-cryptography","name":"Cryptography: What is it? How does it work?","isPartOf":{"@id":"https:\/\/datascientest.com\/en\/#website"},"datePublished":"2024-08-12T14:41:09+00:00","dateModified":"2024-08-12T14:41:11+00:00","description":"Discover the fundamental principles of cryptography, an essential science for the security of digital data. This article explores its history, modern encryption techniques, and practical applications.","inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/datascientest.com\/en\/all-about-cryptography"]}]},{"@type":"WebSite","@id":"https:\/\/datascientest.com\/en\/#website","url":"https:\/\/datascientest.com\/en\/","name":"Data Science Courses | DataScientest","description":"Leader in Data Science Courses","publisher":{"@id":"https:\/\/datascientest.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/datascientest.com\/en\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/datascientest.com\/en\/#organization","name":"DataScientest","url":"https:\/\/datascientest.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/datascientest.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/datascientest.com\/en\/wp-content\/blogs.dir\/9\/files\/2024\/02\/DataScientest_icon_blue-2.png","contentUrl":"https:\/\/datascientest.com\/en\/wp-content\/blogs.dir\/9\/files\/2024\/02\/DataScientest_icon_blue-2.png","width":301,"height":301,"caption":"DataScientest"},"image":{"@id":"https:\/\/datascientest.com\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/DataScientestEN","https:\/\/twitter.com\/DataScientest__","https:\/\/www.linkedin.com\/school\/datascientest\/mycompany\/","https:\/\/www.tiktok.com\/@datascientest"]},{"@type":"Person","@id":"https:\/\/datascientest.com\/en\/#\/schema\/person\/5a86e30c5090234fb43dd8baa83c44b0","name":"Daniel","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/datascientest.com\/en\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/837acad4f2dc47e85d81cce837261670?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/837acad4f2dc47e85d81cce837261670?s=96&d=mm&r=g","caption":"Daniel"},"sameAs":["https:\/\/www.linkedin.com\/school\/datascientest\/","user"],"jobTitle":"ing\u00e9nieur logiciel","worksFor":"DataScientest","url":"https:\/\/datascientest.com\/en\/author\/team-redac"}]}},"_links":{"self":[{"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/posts\/187709"}],"collection":[{"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/users\/45"}],"replies":[{"embeddable":true,"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/comments?post=187709"}],"version-history":[{"count":0,"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/posts\/187709\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/media\/187711"}],"wp:attachment":[{"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/media?parent=187709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/categories?post=187709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/datascientest.com\/en\/wp-json\/wp\/v2\/tags?post=187709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}