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+---
+title: Window.crypto
+slug: Web/API/crypto_property
+translation_of: Web/API/Window/crypto
+original_slug: Web/API/Window/crypto
+---
+<div>{{APIRef}}</div>
+
+<p>Window.crypto只读属性返回与全局对象关联的 {{domxref("Crypto")}}对象。 此对象允许网页访问某些加密相关服务。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">var <em>cryptoObj</em> = window.crypto || window.msCrypto; // for IE 11
+</pre>
+
+<h2 id="Example" name="Example">范例</h2>
+
+<h4 id="使用_domxref(Window.crypto)_来访问getRandomValues()_方法.">使用 {{domxref("Window.crypto")}} 来访问<a href="/en-US/docs/Web/API/RandomSource/getRandomValues">getRandomValues()</a> 方法.</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;随机数字: &lt;/p&gt;
+&lt;button type="button" onClick='genRandomNumbers()'&gt;生成10个随机数字&lt;/button&gt;</pre>
+
+<h3 id="结果">结果</h3>
+
+<p>{{ EmbedLiveSample('Example') }}</p>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">规范</th>
+   <th scope="col">状态</th>
+   <th scope="col">批注</th>
+  </tr>
+  <tr>
+   <td>{{SpecName("Web Crypto API", "#dfn-GlobalCrypto", "Window.crypto")}}</td>
+   <td>{{Spec2("Web Crypto API")}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器支持">浏览器支持</h2>
+
+<p>{{CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Edge</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>44 {{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>Feature</th>
+   <th>Chrome for Android</th>
+   <th>Firefox Mobile</th>
+   <th>Firefox OS</th>
+   <th>IE Phone</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</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="另见">另见</h2>
+
+<ul>
+ <li>The {{domxref("Window")}} global object</li>
+</ul>