{"id":3231,"date":"2024-12-18T09:18:33","date_gmt":"2024-12-18T12:18:33","guid":{"rendered":"https:\/\/thiagorossi.com.br\/blog\/?p=3231"},"modified":"2025-12-09T11:10:32","modified_gmt":"2025-12-09T14:10:32","slug":"laravel-encryption","status":"publish","type":"post","link":"https:\/\/thiagorossi.com.br\/blog\/laravel-encryption\/","title":{"rendered":"Laravel Encryption"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Tempo de leitura: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutos<\/span><\/span>\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Laravel Encryption<\/strong>: A <strong>Criptografia<\/strong> \u00e9 um pilar da seguran\u00e7a de dados, garantindo a <strong>confidencialidade<\/strong> e a <strong>integridade<\/strong> de informa\u00e7\u00f5es sens\u00edveis. O Laravel fornece uma interface simples e segura atrav\u00e9s da <strong>Facade <code>Crypt<\/code><\/strong>, utilizando o algoritmo <strong>AES-256<\/strong> e a extens\u00e3o <strong>OpenSSL<\/strong> do PHP. Este sistema \u00e9 ideal para criptografar dados que n\u00e3o podem ser armazenados como texto simples, mas que precisam ser revers\u00edveis (ou seja, podem ser descriptografados).<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">1. \ud83d\udd11 Configura\u00e7\u00e3o da Chave de Criptografia<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">O Laravel usa uma chave sim\u00e9trica de 32 caracteres (256 bits) para criptografar e descriptografar dados. Essa chave deve ser mantida <strong>secreta<\/strong> e \u00e9 crucial para a seguran\u00e7a do sistema.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">A. Gera\u00e7\u00e3o da Chave<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Se voc\u00ea ainda n\u00e3o tiver uma chave no seu arquivo <code>.env<\/code>, gere uma usando o Artisan:<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Bash<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>php artisan key:generate\n# Este comando preenche a vari\u00e1vel APP_KEY no seu arquivo .env\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">B. Vari\u00e1vel de Ambiente<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">A chave gerada \u00e9 armazenada na vari\u00e1vel <strong><code>APP_KEY<\/code><\/strong> do <code>.env<\/code>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">.ENV<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>APP_KEY=base64:AbCdEfGhIjKlMnOpQrStUvWxYz0123456789==\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Aten\u00e7\u00e3o:<\/strong> Se esta chave for comprometida, todos os seus dados criptografados podem ser descriptografados. Nunca a armazene em reposit\u00f3rios p\u00fablicos.<\/p>\n<\/blockquote>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">2. \ud83d\udee1\ufe0f Criptografando Valores<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">A Facade <code>Crypt<\/code> oferece m\u00e9todos est\u00e1ticos para opera\u00e7\u00f5es revers\u00edveis.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">A. Criptografando Dados Gen\u00e9ricos (<code>Crypt::encrypt<\/code>)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">O m\u00e9todo <code>encrypt()<\/code> aceita qualquer valor (<em>string<\/em>, <em>array<\/em>, objeto) e retorna uma <em>string<\/em> codificada em base64 que cont\u00e9m o valor cifrado, um <em>Initialization Vector<\/em> (IV) e um <em>Message Authentication Code<\/em> (MAC).<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>use Illuminate\\Support\\Facades\\Crypt;\n\n$private_data = &#91;'credit_card' =&gt; '1234567890123456', 'cvv' =&gt; '123'];\n\n$encrypted_data = Crypt::encrypt($private_data);\n\n\/\/ O resultado \u00e9 uma string longa, segura e revers\u00edvel\n\/\/ Ex: \"eyJpdiI6IkhsN...\"\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">B. Criptografando Apenas Strings (<code>Crypt::encryptString<\/code>)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Este m\u00e9todo \u00e9 um atalho que \u00e9 otimizado para <em>strings<\/em> e \u00e9 \u00fatil para tokens ou pequenos peda\u00e7os de dados.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$user_token = Crypt::encryptString($user-&gt;id . '|' . now()-&gt;timestamp);\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">3. \ud83d\udd13 Descriptografando Valores<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Para reverter o processo e obter o valor original, use o m\u00e9todo correspondente.<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">A. Descriptografando Dados Gen\u00e9ricos (<code>Crypt::decrypt<\/code>)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Se o m\u00e9todo <code>encrypt()<\/code> foi usado, use <code>decrypt()<\/code>:<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>try {\n    \/\/ Retorna o array PHP original\n    $decrypted_data = Crypt::decrypt($encrypted_data); \n    \n    echo $decrypted_data&#91;'credit_card'];\n\n} catch (\\Illuminate\\Contracts\\Encryption\\DecryptException $e) {\n    \/\/ Se o valor ou a chave APP_KEY estiverem incorretos, uma exce\u00e7\u00e3o \u00e9 lan\u00e7ada.\n    throw new \\Exception('Dados de criptografia inv\u00e1lidos.');\n}\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">B. Descriptografando Strings (<code>Crypt::decryptString<\/code>)<\/h3>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Se o m\u00e9todo <code>encryptString()<\/code> foi usado, use <code>decryptString()<\/code>:<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">PHP<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$decrypted_token = Crypt::decryptString($user_token);\n\/\/ Resultado: \"1|1678886400\"\n<\/code><\/pre>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">4. \ud83d\udd17 Criptografia vs. Hashing de Senhas<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">\u00c9 crucial entender que a criptografia revers\u00edvel (<code>Crypt<\/code>) \u00e9 <strong>diferente<\/strong> do <em>Hashing<\/em> unidirecional (<code>Hash::make<\/code> ou <code>bcrypt<\/code>).<\/p>\n\n\n\n<figure class=\"wp-block-table has-medium-font-size\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Caracter\u00edstica<\/strong><\/td><td><strong>Criptografia (Crypt)<\/strong><\/td><td><strong>Hashing (Hash \/ bcrypt)<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong>Reversibilidade<\/strong><\/td><td>Sim (dado original pode ser recuperado)<\/td><td>N\u00e3o (unidirecional)<\/td><\/tr><tr><td><strong>Uso Principal<\/strong><\/td><td>Dados sens\u00edveis (ex: tokens de API, informa\u00e7\u00f5es banc\u00e1rias)<\/td><td><strong>Senhas<\/strong> (nunca devem ser recuperadas)<\/td><\/tr><tr><td><strong>Algoritmo<\/strong><\/td><td>AES-256-CBC<\/td><td>bcrypt, Argon2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Boas Pr\u00e1ticas:<\/strong> <strong>Nunca<\/strong> use <code>Crypt::encrypt()<\/code> ou <code>Crypt::encryptString()<\/code> para armazenar senhas. Use sempre o <em>hashing<\/em> seguro (Laravel usa <code>Hash::make()<\/code> ou o helper <code>bcrypt()<\/code>).<\/p>\n<\/blockquote>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">5. \u26a0\ufe0f Boas Pr\u00e1ticas e Considera\u00e7\u00f5es<\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><strong>Chave de Criptografia:<\/strong> Gire a chave anualmente ou sempre que houver suspeita de vazamento (<code>php artisan key:generate<\/code>).<\/li>\n\n\n\n<li class=\"has-medium-font-size\"><strong>Model Casting:<\/strong> Para criptografar atributos de um modelo Eloquent automaticamente antes de salvar, use o <em>Casting<\/em> <strong><code>encrypted<\/code><\/strong> (dispon\u00edvel no Laravel 9+).PHP<code>\/\/ App\\Models\\User.php protected $casts = [ 'api_key' => 'encrypted', ];<\/code><\/li>\n\n\n\n<li class=\"has-medium-font-size\"><strong>Consultas (Queries):<\/strong> Evite criptografar colunas que precisam ser pesquisadas via SQL (<code>WHERE name = 'X'<\/code>), pois o valor cifrado \u00e9 diferente toda vez e impede a busca direta.<\/li>\n<\/ol>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-large-font-size\">\u2705 Conclus\u00e3o Laravel Encryption<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Laravel Encryption<\/strong>: A Facade <strong><code>Crypt<\/code><\/strong> \u00e9 a ferramenta do Laravel para adicionar uma camada de <strong>confidencialidade<\/strong> aos dados que precisam ser armazenados de forma revers\u00edvel. Ao usar m\u00e9todos como <strong><code>encrypt<\/code><\/strong> e <strong><code>decrypt<\/code><\/strong>, e mantendo a <strong><code>APP_KEY<\/code><\/strong> segura, voc\u00ea protege informa\u00e7\u00f5es sens\u00edveis, garantindo que a seguran\u00e7a dos dados da sua aplica\u00e7\u00e3o esteja em conformidade com os padr\u00f5es modernos.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">Mas antes de dominar o Laravel, se for o seu caso, toda jornada tem um in\u00edcio. Vamos entender quais s\u00e3o os conhecimentos b\u00e1sicos necess\u00e1rios para aproveitar ao m\u00e1ximo este poderoso framework. Para iniciar seus estudos no Laravel, voc\u00ea precisar\u00e1 dominar as seguintes tecnologias:<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/html\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/html.webp\" alt=\"HTML\" class=\"wp-image-600\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/html.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/html-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">HTML<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/css\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/Capa-Artigos-Linux.webp\" alt=\"CSS\" class=\"wp-image-702\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/Capa-Artigos-Linux.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/Capa-Artigos-Linux-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">CSS<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/javascript\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/javascript.webp\" alt=\"Javascript\" class=\"wp-image-804\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/javascript.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/04\/javascript-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">JavaScript<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/sql\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/05\/Capa-Artigos-2.webp\" alt=\"SQL\" class=\"wp-image-942\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/05\/Capa-Artigos-2.webp 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/05\/Capa-Artigos-2-300x169.webp 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">SQL<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"\/category\/php\"><img loading=\"lazy\" decoding=\"async\" width=\"758\" height=\"426\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Capa-PHP.png\" alt=\"Capa Curso PHP\" class=\"wp-image-2835\" srcset=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Capa-PHP.png 758w, https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/11\/Capa-PHP-300x169.png 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><figcaption class=\"wp-element-caption\">PHP<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">E se voc\u00ea gosta do nosso conte\u00fado, n\u00e3o deixe de contribuir adquirindo os servi\u00e7os e produtos dos nossos apoiadores e empresas que somos associados:<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/hostinger.com.br\/?REFERRALCODE=1THIAGO62\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/03\/hostinger.png\" alt=\"Hospedagem Hostinger\" class=\"wp-image-92\"\/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/amzn.to\/3SNDYlc\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/08\/ofertas-amazon.webp\" alt=\"Ofertas Amazon\" class=\"wp-image-1308\"\/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/amzn.to\/3SNKmt0\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"250\" src=\"https:\/\/thiagorossi.com.br\/blog\/wp-content\/uploads\/2024\/08\/amazonprime.webp\" alt=\"Amazon Prime\" class=\"wp-image-1307\"\/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Tempo de leitura: <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutos<\/span><\/span>Laravel Encryption: A Criptografia \u00e9 um pilar da seguran\u00e7a de dados, garantindo a confidencialidade e&#8230;<\/p>\n","protected":false},"author":1,"featured_media":1642,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-3231","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laravel","wpcat-18-id"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Laravel Encryption - BLOG THIAGO ROSSI<\/title>\n<meta name=\"description\" content=\"Laravel Encryption: Neste artigo, vamos explorar como implementar a criptografia em suas aplica\u00e7\u00f5es Laravel, garantindo a confidencialidade..\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thiagorossi.com.br\/blog\/laravel-encryption\/\" \/>\n<meta property=\"og:locale\" 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