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185 lines
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HTML
185 lines
7.9 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>打开密封的数据</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-open" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">openssl_open</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_open</span> — <span class="dc-title">打开密封的数据</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.openssl-open-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_open</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$sealed_data</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$open_data</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$env_key</code></span>
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, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$priv_key_id</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">bool</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>openssl_open()</strong></span> 使用与密钥标识符<code class="parameter">priv_key_id</code>和信封密钥<code class="parameter">env_key</code>相关联的私钥打开 (解密)
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<code class="parameter">sealed_data</code> 数据, 使用解密后的数据填充<code class="parameter">open_data</code>。
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当数据被密封时，就生成了信封密钥且只能由一个特定的私钥使用。更多信息参见
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<span class="function"><a href="openssl_seal.html" class="function">openssl_seal()</a></span> 。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.openssl-open-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">sealed_data</code></dt>
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<dd>
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<p class="para">
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</p>
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</dd>
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<dt>
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<code class="parameter">open_data</code></dt>
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<dd>
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<p class="para">
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如果调用成功，则在这个参数中返回打开的数据。
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</p>
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</dd>
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<dt>
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<code class="parameter">env_key</code></dt>
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<dd>
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<p class="para">
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</p>
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</dd>
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<dt>
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<code class="parameter">priv_key_id</code></dt>
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<dd>
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<p class="para">
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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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加解密算法。
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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-open-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时返回 <strong><code>TRUE</code></strong>， 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 changelog" id="refsect1-function.openssl-open-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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添加了 <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>5.3.0</td>
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<td>
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添加了 <code class="parameter">method</code> 参数
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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-open-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-937">
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<p><strong>Example #1 <span class="function"><strong>openssl_open()</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">// $sealed and $env_key are assumed to contain the sealed data<br />// and our envelope key, both given to us by the sealer.<br /><br />// fetch private key from file and ready it<br /></span><span style="color: #0000BB">$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/key.pem"</span><span style="color: #007700">, </span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$priv_key </span><span style="color: #007700">= </span><span style="color: #0000BB">fread</span><span style="color: #007700">(</span><span style="color: #0000BB">$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">$fp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$pkeyid </span><span style="color: #007700">= </span><span style="color: #0000BB">openssl_get_privatekey</span><span style="color: #007700">(</span><span style="color: #0000BB">$priv_key</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// decrypt the data and store it in $open<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">openssl_open</span><span style="color: #007700">(</span><span style="color: #0000BB">$sealed</span><span style="color: #007700">, </span><span style="color: #0000BB">$open</span><span style="color: #007700">, </span><span style="color: #0000BB">$env_key</span><span style="color: #007700">, </span><span style="color: #0000BB">$pkeyid</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"here is the opened data: "</span><span style="color: #007700">, </span><span style="color: #0000BB">$open</span><span style="color: #007700">;<br />} else {<br /> echo </span><span style="color: #DD0000">"failed to open data"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">// free the private key from memory<br /></span><span style="color: #0000BB">openssl_free_key</span><span style="color: #007700">(</span><span style="color: #0000BB">$pkeyid</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-open-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_seal.html" class="function" rel="rdfs-seeAlso">openssl_seal()</a> - 密封 (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> |