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200 lines
5.6 KiB
HTML
200 lines
5.6 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>解密数据</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.openssl-decrypt" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">openssl_decrypt</h1>
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<p class="verinfo">(PHP 5 >= 5.3.0, PHP 7)</p><p class="refpurpose"><span class="refname">openssl_decrypt</span> — <span class="dc-title">解密数据</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.openssl-decrypt-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>openssl_decrypt</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$method</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$key</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$options</code><span class="initializer"> = 0</span></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$iv</code><span class="initializer"> = ""</span></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$tag</code><span class="initializer"> = ""</span></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$aad</code><span class="initializer"> = ""</span></span>
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]]]] ) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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采用原始或base64编码的字符串，并使用给定的方法和密钥对其进行解密。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.openssl-decrypt-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">data</code></dt>
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<dd>
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<p class="para">
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将被解密的密文。
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</p>
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</dd>
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<dt>
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<code class="parameter">method</code></dt>
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<dd>
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<p class="para">
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加密算法，使用<span class="function"><a href="openssl_get_cipher_methods.html" class="function">openssl_get_cipher_methods()</a></span>函数获取可用的加密算法列表。
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</p>
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</dd>
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<dt>
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<code class="parameter">key</code></dt>
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<dd>
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<p class="para">
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密钥。
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</p>
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</dd>
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<dt>
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<code class="parameter">options</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">options</code> can be one of
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<strong><code>OPENSSL_RAW_DATA</code></strong>,
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<strong><code>OPENSSL_ZERO_PADDING</code></strong>.
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</p>
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</dd>
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<dt>
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<code class="parameter">iv</code></dt>
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<dd>
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<p class="para">
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非空的初始化向量。
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</p>
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</dd>
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<dt>
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<code class="parameter">tag</code></dt>
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<dd>
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<p class="para">
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AEAD密码模式中的身份验证标签。 如果是错误的，验证失败，函数返回<strong><code>FALSE</code></strong>.
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</p>
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</dd>
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<dt>
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<code class="parameter">aad</code></dt>
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<dd>
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<p class="para">
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额外的认证数据。
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.openssl-decrypt-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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The decrypted string on success 或者在失败时返回 <strong><code>FALSE</code></strong>.
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</p>
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</div>
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<div class="refsect1 errors" id="refsect1-function.openssl-decrypt-errors">
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<h3 class="title">错误／异常</h3>
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<p class="para">
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如果通过<code class="parameter">method</code>参数传递的是一个未知的加密算法，将会抛出一个 <strong><code>E_WARNING</code></strong> 等级的错误。
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</p>
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<p class="para">
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如果通过<code class="parameter">iv</code>参数传递的是一个空值，将会抛出一个 <strong><code>E_WARNING</code></strong> 等级的错误。
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.openssl-decrypt-changelog">
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<h3 class="title">更新日志</h3>
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>5.3.3</td>
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<td>
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添加 <code class="parameter">iv</code> 参数。
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</td>
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</tr>
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<tr>
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<td>5.4.0</td>
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<td>
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将 <code class="parameter">raw_output</code> 更改至 <code class="parameter">options</code>。
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</td>
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</tr>
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<tr>
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<td>7.1.0</td>
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<td>添加了 <code class="parameter">tag</code> 和 <code class="parameter">aad</code> 参数。</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.openssl-decrypt-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="openssl_encrypt.html" class="function" rel="rdfs-seeAlso">openssl_encrypt()</a> - 加密数据</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |