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---
title: Crypto.subtle
slug: Web/API/Crypto/subtle
translation_of: Web/API/Crypto/subtle
---
<p>{{APIRef("Web Crypto API")}}</p>

{{APIRef("Web Crypto API")}}{{SecureContext_header}}

<p><strong><code>Crypto.subtle</code></strong> 是一个只读属性,返回一个 {{domxref("SubtleCrypto")}} 对象允许做一个些加密操作。</p>

<h2 id="语法">语法</h2>

<pre>var <em>crypto</em> = crypto.subtle;</pre>

<h3 id="value"></h3>

<p>一个可用于与Web Crypto API的低级加密功能交互的 {{domxref("SubtleCrypto")}} 对象。</p>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{ SpecName('Web Crypto API', '#dfn-Crypto', 'Crypto.subtle') }}</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>

{{Compat("api.Crypto.subtle")}}

<h2 id="另见">另见</h2>

<ul>
 <li>{{domxref("Crypto")}}.</li>
 <li>{{domxref("SubtleCrypto")}}.</li>
</ul>