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199 lines
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HTML
199 lines
6.0 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>获得ECC的可用曲线名称列表</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-curve-names" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">openssl_get_curve_names</h1>
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<p class="verinfo">(PHP 7 >= 7.1.0)</p><p class="refpurpose"><span class="refname">openssl_get_curve_names</span> — <span class="dc-title">获得ECC的可用曲线名称列表</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.openssl-get-curve-names-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_curve_names</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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获取用于公钥/私钥操作的椭圆曲线密码（ECC）中可用曲线名称的列表。两个最广泛的标准化/支持的曲线是<em class="emphasis">prime256v1</em>
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(NIST P-256) 和 <em class="emphasis">secp384r1</em> (NIST P-384).
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<table class="doctable table">
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<caption><strong>AES, RSA, DSA 和 ECC 密钥长度近似等值</strong></caption>
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<thead>
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<tr>
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<th>AES Symmetric Keysize (Bits)</th>
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<th>RSA and DSA Keysize (Bits)</th>
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<th>ECC Keysize (Bits)</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>80</td>
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<td>1024</td>
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<td>160</td>
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</tr>
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<tr>
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<td>112</td>
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<td>2048</td>
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<td>224</td>
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</tr>
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<tr>
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<td>128</td>
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<td>3072</td>
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<td>256</td>
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</tr>
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<tr>
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<td>192</td>
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<td>7680</td>
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<td>384</td>
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</tr>
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<tr>
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<td>256</td>
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<td>15360</td>
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<td>512</td>
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</tr>
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</tbody>
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</table>
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<a href="http://dx.doi.org/10.6028/NIST.SP.800-57pt1r4" class="link external">» NIST
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推荐使用的 ECC 曲线最少为 256 位</a>.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.openssl-get-curve-names-parameters">
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<h3 class="title">参数</h3>
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<p class="para">此函数没有参数。</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.openssl-get-curve-names-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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一个包含可用曲线名称的<span class="type"><span class="type 数组">数组</span></span>。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.openssl-get-curve-names-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="openssl-cipher-iv-length.example.basic">
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<p><strong>Example #1 <span class="function"><strong>openssl_get_curve_names()</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 />$curve_names </span><span style="color: #007700">= </span><span style="color: #0000BB">openssl_get_curve_names</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$curve_names</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] => secp112r1
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[1] => secp112r2
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[2] => secp128r1
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[3] => secp128r2
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[4] => secp160k1
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[5] => secp160r1
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[6] => secp160r2
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[7] => secp192k1
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[8] => secp224k1
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[9] => secp224r1
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[10] => secp256k1
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[11] => secp384r1
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[12] => secp521r1
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[13] => prime192v1
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[14] => prime192v2
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[15] => prime192v3
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[16] => prime239v1
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[17] => prime239v2
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[18] => prime239v3
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[19] => prime256v1
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[20] => sect113r1
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[21] => sect113r2
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[22] => sect131r1
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[23] => sect131r2
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[24] => sect163k1
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[25] => sect163r1
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[26] => sect163r2
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[27] => sect193r1
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[28] => sect193r2
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[29] => sect233k1
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[30] => sect233r1
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[31] => sect239k1
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[32] => sect283k1
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[33] => sect283r1
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[34] => sect409k1
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[35] => sect409r1
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[36] => sect571k1
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[37] => sect571r1
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[38] => c2pnb163v1
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[39] => c2pnb163v2
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[40] => c2pnb163v3
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[41] => c2pnb176v1
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[42] => c2tnb191v1
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[43] => c2tnb191v2
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[44] => c2tnb191v3
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[45] => c2pnb208w1
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[46] => c2tnb239v1
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[47] => c2tnb239v2
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[48] => c2tnb239v3
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[49] => c2pnb272w1
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[50] => c2pnb304w1
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[51] => c2tnb359v1
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[52] => c2pnb368w1
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[53] => c2tnb431r1
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[54] => wap-wsg-idm-ecid-wtls1
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[55] => wap-wsg-idm-ecid-wtls3
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[56] => wap-wsg-idm-ecid-wtls4
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[57] => wap-wsg-idm-ecid-wtls5
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[58] => wap-wsg-idm-ecid-wtls6
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[59] => wap-wsg-idm-ecid-wtls7
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[60] => wap-wsg-idm-ecid-wtls8
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[61] => wap-wsg-idm-ecid-wtls9
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[62] => wap-wsg-idm-ecid-wtls10
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[63] => wap-wsg-idm-ecid-wtls11
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[64] => wap-wsg-idm-ecid-wtls12
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[65] => Oakley-EC2N-3
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[66] => Oakley-EC2N-4
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[67] => brainpoolP160r1
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[68] => brainpoolP160t1
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[69] => brainpoolP192r1
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[70] => brainpoolP192t1
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[71] => brainpoolP224r1
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[72] => brainpoolP224t1
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[73] => brainpoolP256r1
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[74] => brainpoolP256t1
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[75] => brainpoolP320r1
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[76] => brainpoolP320t1
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[77] => brainpoolP384r1
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[78] => brainpoolP384t1
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[79] => brainpoolP512r1
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[80] => brainpoolP512t1
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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></div></div></body></html> |