---
title: Window.crypto
slug: Web/API/crypto_property
tags:
  - API
  - HTML DOM
  - Janela
  - NeedsCompatTable
  - Propriedade
  - Referencia
  - Window
translation_of: Web/API/Window/crypto
original_slug: Web/API/Window/crypto
---
<div>{{APIRef}}</div>

<p>{{domxref("Window.crypto")}} propriedade somente de leitura, devolve um objeto do tipo {{domxref("Crypto")}} associado ao objeto global. Este objeto permite que páginas da web utilizem recursos de criptografia.</p>

<h2 id="Sintaxe">Sintaxe</h2>

<pre class="syntaxbox">var <em>cryptoObj</em> = window.crypto || window.msCrypto; // for IE 11
</pre>

<h2 id="Example" name="Example">Exemplo</h2>

<h4 id="Usando_a_propriedade_domxref(Window.crypto)_para_acessar_o_método_getRandomValues().">Usando a propriedade {{domxref("Window.crypto")}}  para acessar o método getRandomValues().</h4>

<h3 id="JavaScript">JavaScript</h3>

<pre class="brush: js">genRandomNumbers = function getRandomNumbers() {
  var array = new Uint32Array(10);
  window.crypto.getRandomValues(array);

  var randText = document.getElementById("myRandText");
  randText.innerHTML = "The random numbers are: "
  for (var i = 0; i &lt; array.length; i++) {
    randText.innerHTML += array[i] + " ";
  }
}</pre>

<h3 id="HTML">HTML</h3>

<pre class="brush: html">&lt;p id="myRandText"&gt;The random numbers are: &lt;/p&gt;
&lt;button type="button" onClick='genRandomNumbers()'&gt;Generate 10 random numbers&lt;/button&gt;</pre>

<h3 id="Resultado">Resultado</h3>

<p>{{ EmbedLiveSample('Example') }}</p>

<h2 id="Especificações">Especificações</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Especificação</th>
   <th scope="col">Status</th>
   <th scope="col">Comentário</th>
  </tr>
  <tr>
   <td>{{SpecName("Web Crypto API", "#dfn-GlobalCrypto", "Window.crypto")}}</td>
   <td>{{Spec2("Web Crypto API")}}</td>
   <td>Definição inicial.</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Compatibilidade com navegadores</h2>

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Característica</th>
   <th>Chrome</th>
   <th>Edge</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Edge</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Suporte básico</td>
   <td>44 {{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>11 {{property_prefix("ms")}}</td>
   <td>20</td>
   <td>19</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Característica</th>
   <th>Chrome for Android</th>
   <th>Edge</th>
   <th>Firefox Mobile</th>
   <th>Firefox OS</th>
   <th>IE Phone</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Suporte básico</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="Veja_também">Veja também</h2>

<ul>
 <li>O objeto global {{domxref("Window")}} </li>
</ul>