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143 lines
8.3 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>加密一个 S/MIME 消息</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-pkcs7-encrypt" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">openssl_pkcs7_encrypt</h1>
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<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">openssl_pkcs7_encrypt</span> — <span class="dc-title">加密一个 S/MIME 消息</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.openssl-pkcs7-encrypt-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_pkcs7_encrypt</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$infile</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$outfile</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">$recipcerts</code></span>
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, <span class="methodparam"><span class="type">array</span> <code class="parameter">$headers</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$flags</code><span class="initializer"> = 0</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$cipherid</code><span class="initializer"> = OPENSSL_CIPHER_RC2_40</span></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_pkcs7_encrypt()</strong></span> 获取文件名为<code class="parameter">infile</code>的文件内容并使用 RC2 40位的密码将之加密，以至于他们只能被预期的名为<code class="parameter">recipcerts</code>的接收者阅读。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.openssl-pkcs7-encrypt-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">infile</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">outfile</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">recipcerts</code></dt>
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<dd>
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<p class="para">
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一个单独的X.509证书，或者一个X.509证书的数组。
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</p>
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</dd>
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<dt>
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<code class="parameter">headers</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">headers</code> 是包含头信息的数组，在被加密后将对数据进行预处理。
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</p>
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<p class="para">
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<code class="parameter">headers</code> 可以是以头名为键值的关联数组，也可以是一个索引数组，其中每个元素都包含一个单独的标题行
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</p>
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</dd>
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<dt>
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<code class="parameter">flags</code></dt>
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<dd>
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<p class="para">
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<code class="parameter">flags</code>用来指定影响编码过程的选项 - 参见 <a href="openssl.pkcs7.flags.html" class="link">PKCS7
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常量</a>.
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</p>
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</dd>
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<dt>
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<code class="parameter">cipherid</code></dt>
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<dd>
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<p class="para">
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<a href="openssl.ciphers.html" class="link">密码常量</a>之一。
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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-pkcs7-encrypt-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 examples" id="refsect1-function.openssl-pkcs7-encrypt-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-941">
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<p><strong>Example #1 <span class="function"><strong>openssl_pkcs7_encrypt()</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">// the message you want to encrypt and send to your secret agent<br />// in the field, known as nighthawk. You have his certificate<br />// in the file nighthawk.pem<br /></span><span style="color: #0000BB">$data </span><span style="color: #007700">= <<<EOD<br /></span><span style="color: #DD0000">Nighthawk,<br /><br />Top secret, for your eyes only!<br /><br />The enemy is closing in! Meet me at the cafe at 8.30am<br />to collect your forged passport!<br /><br />HQ<br /></span><span style="color: #007700">EOD;<br /><br /></span><span style="color: #FF8000">// load key<br /></span><span style="color: #0000BB">$key </span><span style="color: #007700">= </span><span style="color: #0000BB">file_get_contents</span><span style="color: #007700">(</span><span style="color: #DD0000">"nighthawk.pem"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// save message to file<br /></span><span style="color: #0000BB">$fp </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"msg.txt"</span><span style="color: #007700">, </span><span style="color: #DD0000">"w"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">, </span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// encrypt it<br /></span><span style="color: #007700">if (</span><span style="color: #0000BB">openssl_pkcs7_encrypt</span><span style="color: #007700">(</span><span style="color: #DD0000">"msg.txt"</span><span style="color: #007700">, </span><span style="color: #DD0000">"enc.txt"</span><span style="color: #007700">, </span><span style="color: #0000BB">$key</span><span style="color: #007700">,<br /> array(</span><span style="color: #DD0000">"To" </span><span style="color: #007700">=> </span><span style="color: #DD0000">"nighthawk@example.com"</span><span style="color: #007700">, </span><span style="color: #FF8000">// keyed syntax<br /> </span><span style="color: #DD0000">"From: HQ <hq@example.com>"</span><span style="color: #007700">, </span><span style="color: #FF8000">// indexed syntax<br /> </span><span style="color: #DD0000">"Subject" </span><span style="color: #007700">=> </span><span style="color: #DD0000">"Eyes only"</span><span style="color: #007700">))) {<br /> </span><span style="color: #FF8000">// message encrypted - send it!<br /> </span><span style="color: #0000BB">exec</span><span style="color: #007700">(</span><span style="color: #0000BB">ini_get</span><span style="color: #007700">(</span><span style="color: #DD0000">"sendmail_path"</span><span style="color: #007700">) . </span><span style="color: #DD0000">" < enc.txt"</span><span style="color: #007700">);<br />}<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></div></div></body></html> |