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187 lines
9.1 KiB
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<!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>密封 (加密) 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-seal" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">openssl_seal</h1>
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<p class="verinfo">(PHP 4 >= 4.0.4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">openssl_seal</span> — <span class="dc-title">密封 (加密) 数据</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.openssl-seal-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_seal</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$sealed_data</code></span>
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, <span class="methodparam"><span class="type">array</span> <code class="parameter reference">&$env_keys</code></span>
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, <span class="methodparam"><span class="type">array</span> <code class="parameter">$pub_key_ids</code></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$method</code><span class="initializer"> = "RC4"</span></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$iv</code></span>
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]] ) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>openssl_seal()</strong></span> 使用随机生成的密钥和给定的 <code class="parameter">method</code> 方法密封 (加密)
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<code class="parameter">data</code> 数据。 密钥用与<code class="parameter">pub_key_ids</code>中的标识符相关联的每个公共密钥加密，并且每个加密密钥在<code class="parameter">env_keys</code>中返回。 这意味着一个人可以将密封的数据发送给多个接收者(如果一个人已经获得了他们的公钥)。每个接收方都必须同时接收加密的数据和用接收方的公钥加密的信封密钥。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.openssl-seal-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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要密封的数据。
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</p>
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</dd>
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<dt>
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<code class="parameter">sealed_data</code></dt>
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<dd>
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<p class="para">
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被密封后的数据。
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</p>
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</dd>
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<dt>
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<code class="parameter">env_keys</code></dt>
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<dd>
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<p class="para">
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已被加密的密钥数组。
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</p>
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</dd>
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<dt>
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<code class="parameter">pub_key_ids</code></dt>
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<dd>
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<p class="para">
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公钥资源标识符组成的数组。
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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。
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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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初始化向量。
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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-seal-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功，返回密封后数据的长度，错误，返回 <strong><code>FALSE</code></strong> .
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如果密封后的数据成功地通过<code class="parameter">sealed_data</code>变量返回，那么信封密钥也将会通过 <code class="parameter">env_keys</code> 变量返回。
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.openssl-seal-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>7.0.0</td>
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<td>
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添加 <code class="parameter">iv</code> 变量。
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</td>
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</tr>
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<tr>
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<td>5.3.0</td>
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<td>
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添加 <code class="parameter">method</code> 变量。
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</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 examples" id="refsect1-function.openssl-seal-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-944">
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<p><strong>Example #1 <span class="function"><strong>openssl_seal()</strong></span> 范例：</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// $data is assumed to contain the data to be sealed<br /><br />// fetch public keys for our recipients, and ready them<br /></span><span style="color: #0000BB">$fp </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"/src/openssl-0.9.6/demos/maurice/cert.pem"</span><span style="color: #007700">, </span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$cert </span><span style="color: #007700">= </span><span style="color: #0000BB">fread</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">, </span><span style="color: #0000BB">8192</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$pk1 </span><span style="color: #007700">= </span><span style="color: #0000BB">openssl_get_publickey</span><span style="color: #007700">(</span><span style="color: #0000BB">$cert</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">// Repeat for second recipient<br /></span><span style="color: #0000BB">$fp </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"/src/openssl-0.9.6/demos/sign/cert.pem"</span><span style="color: #007700">, </span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$cert </span><span style="color: #007700">= </span><span style="color: #0000BB">fread</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">, </span><span style="color: #0000BB">8192</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$pk2 </span><span style="color: #007700">= </span><span style="color: #0000BB">openssl_get_publickey</span><span style="color: #007700">(</span><span style="color: #0000BB">$cert</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// seal message, only owners of $pk1 and $pk2 can decrypt $sealed with keys<br />// $ekeys[0] and $ekeys[1] respectively.<br /></span><span style="color: #0000BB">openssl_seal</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$sealed</span><span style="color: #007700">, </span><span style="color: #0000BB">$ekeys</span><span style="color: #007700">, array(</span><span style="color: #0000BB">$pk1</span><span style="color: #007700">, </span><span style="color: #0000BB">$pk2</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">// free the keys from memory<br /></span><span style="color: #0000BB">openssl_free_key</span><span style="color: #007700">(</span><span style="color: #0000BB">$pk1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">openssl_free_key</span><span style="color: #007700">(</span><span style="color: #0000BB">$pk2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.openssl-seal-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_open.html" class="function" rel="rdfs-seeAlso">openssl_open()</a> - 打开密封的数据</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> |