openssl-pkey-new.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.openssl-pkey-new" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>openssl_pkey_new</refname>
  <refpurpose>生成一个新的私钥</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type class="union"><type>OpenSSLAsymmetricKey</type><type>false</type></type><methodname>openssl_pkey_new</methodname>
   <methodparam choice="opt"><type class="union"><type>array</type><type>null</type></type><parameter>options</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <para>
   <function>openssl_pkey_new</function> 生成一个新的私钥和公钥对。如何获取该密钥的公共组件参见以下示例。
  </para>
  &note.openssl.cnf;
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>options</parameter></term>
     <listitem>
      <para>
       你可以使用 <parameter>options</parameter> 参数微调密钥的生成（比如指定位数）。查看
       <function>openssl_csr_new</function> 获取更多关于
       <parameter>options</parameter> 的信息。
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   成功时返回 <classname>OpenSSLAsymmetricKey</classname> 实例，错误则返回 &false; 。
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     <row>
      <entry>8.0.0</entry>
      <entry>
       成功时此函数会返回 <classname>OpenSSLAsymmetricKey</classname> 的实例；在之前版本中，则会返回类似为
       <literal>OpenSSL key</literal> 的 &resource;。
      </entry>
     </row>
     <row>
      <entry>7.1.0</entry>
      <entry>添加了 <parameter>curve_name</parameter> 配置参数使得可以创建 EC 密钥。</entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example xml:id="function.openssl-pkey-new.example.public-key">
   <title>Obtain the public key from a private key</title>
   <programlisting role="php">
<![CDATA[
<?php
$private_key = openssl_pkey_new();
$public_key_pem = openssl_pkey_get_details($private_key)['key'];
echo $public_key_pem;
$public_key = openssl_pkey_get_public($public_key_pem);
var_dump($public_key);
?>
]]>
   </programlisting>
   &example.outputs.similar;
   <screen>
<![CDATA[
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArZFsmN2P6rx1Xt7YV95o
gcdlal0k3ryiIhFNzjwtRNNTXfEfBr6lUuaIJYQ8/XqEBX0hpcfuuF6tTRlonA3t
WLME0QFD93YVsAaXcy76YqjjqcRRodIBphAbYyyMI/lXkQAdn7kbAmr7neSOsMYJ
El9Wo4Hl4oG6e52ZnYHyqW9dxh4hX93eupR2TmcCdVf+r9xoHewP0KJYSHt7vDUX
AQlWYcQiWHIadFsmL0orr6mutlXFReoHbesgKY9/3YLOu0JfxflSjIZ2JeL1NTl1
MsmODsUwgAUrwnWKKx+eQUP5g3GnSB3dPkRh9zRVRiLNWbCugyjrf3e6DgQWrW7j
pwIDAQAB
-----END PUBLIC KEY-----
resource(5) of type (OpenSSL key)
]]>
   </screen>
  </example>
 </refsect1>

</refentry>
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