php-doc-en/reference/openssl/functions/openssl-private-encrypt.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<!-- splitted from ./en/functions/openssl.xml, last change in rev 1.19 -->
  <refentry id="function.openssl-private-encrypt">
   <refnamediv>
    <refname>openssl_private_encrypt</refname>
    <refpurpose>Encrypts data with private key </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>bool</type><methodname>openssl_private_encrypt</methodname>
      <methodparam><type>string</type><parameter>data</parameter></methodparam>
      <methodparam><type>string</type><parameter>&amp;crypted</parameter></methodparam>
      <methodparam><type>mixed</type><parameter>key</parameter></methodparam>
      <methodparam choice="opt"><type>int</type><parameter>padding</parameter></methodparam>
     </methodsynopsis>
     &warn.experimental.func;
    <para>
     <function>openssl_private_encrypt</function> encrypts <parameter>data</parameter>
     with private <parameter>key</parameter> and stores the result into
     <parameter>crypted</parameter>. Encrypted data can be decrypted via
     <function>openssl_public_decrypt</function>. <parameter>padding</parameter>
     defaults to <constant>OPENSSL_PKCS1_PADDING</constant>, but can also be
     <constant>OPENSSL_NO_PADDING</constant>.
    </para>
    <para>
     &return.success;
    </para>
    <para>
     This function can be used e.g. to sign data (or its hash) to prove that it
     is not written by someone else.
    </para>
    <para>
     See also <function>openssl_public_decrypt</function> and
     <function>openssl_public_encrypt</function>.
    </para>
   </refsect1>
  </refentry>

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