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165 lines
11 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>获取可用的加密算法</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-get-cipher-methods" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">openssl_get_cipher_methods</h1>
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<p class="verinfo">(PHP 5 >= 5.3.0, PHP 7)</p><p class="refpurpose"><span class="refname">openssl_get_cipher_methods</span> — <span class="dc-title">获取可用的加密算法</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.openssl-get-cipher-methods-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_get_cipher_methods</strong></span>
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([ <span class="methodparam"><span class="type">bool</span> <code class="parameter">$aliases</code><span class="initializer"> = false</span></span>
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] ) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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获取可用的加密算法的列表。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.openssl-get-cipher-methods-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">aliases</code></dt>
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<dd>
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<p class="para">
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如果密码别名应该包含在返回的<span class="type"><a href="language.types.array.html" class="type array">array</a></span>中，则设置为 <strong><code>TRUE</code></strong>.
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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-get-cipher-methods-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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一个包含可用加密算法的<span class="type"><a href="language.types.array.html" class="type array">array</a></span>。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.openssl-get-cipher-methods-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-934">
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<p><strong>Example #1 <span class="function"><strong>openssl_get_cipher_methods()</strong></span> example</strong></p>
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<div class="example-contents"><p>
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展示了哪些加密算法能被找到，哪些别名可用。
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</p></div>
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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 />$ciphers </span><span style="color: #007700">= </span><span style="color: #0000BB">openssl_get_cipher_methods</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$ciphers_and_aliases </span><span style="color: #007700">= </span><span style="color: #0000BB">openssl_get_cipher_methods</span><span style="color: #007700">(</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$cipher_aliases </span><span style="color: #007700">= </span><span style="color: #0000BB">array_diff</span><span style="color: #007700">(</span><span style="color: #0000BB">$ciphers_and_aliases</span><span style="color: #007700">, </span><span style="color: #0000BB">$ciphers</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//ECB mode should be avoided<br /></span><span style="color: #0000BB">$ciphers </span><span style="color: #007700">= </span><span style="color: #0000BB">array_filter</span><span style="color: #007700">( </span><span style="color: #0000BB">$ciphers</span><span style="color: #007700">, function(</span><span style="color: #0000BB">$n</span><span style="color: #007700">) { return </span><span style="color: #0000BB">stripos</span><span style="color: #007700">(</span><span style="color: #0000BB">$n</span><span style="color: #007700">,</span><span style="color: #DD0000">"ecb"</span><span style="color: #007700">)===</span><span style="color: #0000BB">FALSE</span><span style="color: #007700">; } );<br /><br /></span><span style="color: #FF8000">//At least as early as Aug 2016, Openssl declared the following weak: RC2, RC4, DES, 3DES, MD5 based<br /></span><span style="color: #0000BB">$ciphers </span><span style="color: #007700">= </span><span style="color: #0000BB">array_filter</span><span style="color: #007700">( </span><span style="color: #0000BB">$ciphers</span><span style="color: #007700">, function(</span><span style="color: #0000BB">$c</span><span style="color: #007700">) { return </span><span style="color: #0000BB">stripos</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</span><span style="color: #007700">,</span><span style="color: #DD0000">"des"</span><span style="color: #007700">)===</span><span style="color: #0000BB">FALSE</span><span style="color: #007700">; } );<br /></span><span style="color: #0000BB">$ciphers </span><span style="color: #007700">= </span><span style="color: #0000BB">array_filter</span><span style="color: #007700">( </span><span style="color: #0000BB">$ciphers</span><span style="color: #007700">, function(</span><span style="color: #0000BB">$c</span><span style="color: #007700">) { return </span><span style="color: #0000BB">stripos</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</span><span style="color: #007700">,</span><span style="color: #DD0000">"rc2"</span><span style="color: #007700">)===</span><span style="color: #0000BB">FALSE</span><span style="color: #007700">; } );<br /></span><span style="color: #0000BB">$ciphers </span><span style="color: #007700">= </span><span style="color: #0000BB">array_filter</span><span style="color: #007700">( </span><span style="color: #0000BB">$ciphers</span><span style="color: #007700">, function(</span><span style="color: #0000BB">$c</span><span style="color: #007700">) { return </span><span style="color: #0000BB">stripos</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</span><span style="color: #007700">,</span><span style="color: #DD0000">"rc4"</span><span style="color: #007700">)===</span><span style="color: #0000BB">FALSE</span><span style="color: #007700">; } );<br /></span><span style="color: #0000BB">$ciphers </span><span style="color: #007700">= </span><span style="color: #0000BB">array_filter</span><span style="color: #007700">( </span><span style="color: #0000BB">$ciphers</span><span style="color: #007700">, function(</span><span style="color: #0000BB">$c</span><span style="color: #007700">) { return </span><span style="color: #0000BB">stripos</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</span><span style="color: #007700">,</span><span style="color: #DD0000">"md5"</span><span style="color: #007700">)===</span><span style="color: #0000BB">FALSE</span><span style="color: #007700">; } );<br /></span><span style="color: #0000BB">$cipher_aliases </span><span style="color: #007700">= </span><span style="color: #0000BB">array_filter</span><span style="color: #007700">(</span><span style="color: #0000BB">$cipher_aliases</span><span style="color: #007700">,function(</span><span style="color: #0000BB">$c</span><span style="color: #007700">) { return </span><span style="color: #0000BB">stripos</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</span><span style="color: #007700">,</span><span style="color: #DD0000">"des"</span><span style="color: #007700">)===</span><span style="color: #0000BB">FALSE</span><span style="color: #007700">; } );<br /></span><span style="color: #0000BB">$cipher_aliases </span><span style="color: #007700">= </span><span style="color: #0000BB">array_filter</span><span style="color: #007700">(</span><span style="color: #0000BB">$cipher_aliases</span><span style="color: #007700">,function(</span><span style="color: #0000BB">$c</span><span style="color: #007700">) { return </span><span style="color: #0000BB">stripos</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</span><span style="color: #007700">,</span><span style="color: #DD0000">"rc2"</span><span style="color: #007700">)===</span><span style="color: #0000BB">FALSE</span><span style="color: #007700">; } );<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$ciphers</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$cipher_aliases</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 class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Array
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(
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[0] => AES-128-CBC
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[1] => AES-128-CFB
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[2] => AES-128-CFB1
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[3] => AES-128-CFB8
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[5] => AES-128-OFB
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[6] => AES-192-CBC
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[7] => AES-192-CFB
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[8] => AES-192-CFB1
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[9] => AES-192-CFB8
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[11] => AES-192-OFB
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[12] => AES-256-CBC
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[13] => AES-256-CFB
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[14] => AES-256-CFB1
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[15] => AES-256-CFB8
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[17] => AES-256-OFB
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[18] => BF-CBC
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[19] => BF-CFB
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[21] => BF-OFB
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[22] => CAST5-CBC
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[23] => CAST5-CFB
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[25] => CAST5-OFB
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[41] => IDEA-CBC
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[42] => IDEA-CFB
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[44] => IDEA-OFB
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[53] => aes-128-cbc
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[54] => aes-128-cfb
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[55] => aes-128-cfb1
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[56] => aes-128-cfb8
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[58] => aes-128-ofb
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[59] => aes-192-cbc
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[60] => aes-192-cfb
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[61] => aes-192-cfb1
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[62] => aes-192-cfb8
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[64] => aes-192-ofb
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[65] => aes-256-cbc
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[66] => aes-256-cfb
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[67] => aes-256-cfb1
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[68] => aes-256-cfb8
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[70] => aes-256-ofb
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[71] => bf-cbc
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[72] => bf-cfb
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[74] => bf-ofb
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[75] => cast5-cbc
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[76] => cast5-cfb
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[78] => cast5-ofb
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[94] => idea-cbc
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[95] => idea-cfb
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[97] => idea-ofb
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)
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Array
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(
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[18] => AES128
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[19] => AES192
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[20] => AES256
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[21] => BF
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[26] => CAST
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[27] => CAST-cbc
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[50] => IDEA
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[82] => aes128
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[83] => aes192
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[84] => aes256
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[85] => bf
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[90] => blowfish
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[91] => cast
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[92] => cast-cbc
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[115] => idea
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)
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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-get-cipher-methods-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_get_md_methods.html" class="function" rel="rdfs-seeAlso">openssl_get_md_methods()</a> - 获取可用的摘要算法</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> |