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baf0dab17e
newly documented functions git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@82020 c90b9560-bf6c-de11-be94-00142212c4b1
71 lines
2.5 KiB
XML
71 lines
2.5 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.3 $ -->
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<!-- splitted from ./en/functions/mcrypt.xml, last change in rev 1.7 -->
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<refentry id="function.mcrypt-decrypt">
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<refnamediv>
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<refname>mcrypt_decrypt</refname>
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<refpurpose>Decrypts crypttext with given parameters</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>string</type><methodname>mcrypt_decrypt</methodname>
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<methodparam><type>string</type><parameter>cipher</parameter></methodparam>
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<methodparam><type>string</type><parameter>key</parameter></methodparam>
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<methodparam><type>string</type><parameter>data</parameter></methodparam>
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<methodparam><type>string</type><parameter>mode</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter>iv</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>mcrypt_decrypt</function> decrypts the data
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and returns the unencrypted data.
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</para>
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<para>
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<parameter>Cipher</parameter> is one of the MCRYPT_ciphername
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constants of the name of the algorithm as string.
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</para>
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<para>
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<parameter>Key</parameter> is the key with which the data
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is encrypted. If it's smaller that the required keysize, it
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is padded with '<literal>\0</literal>'.
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</para>
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<para>
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<parameter>Data</parameter> is the data that will be decrypted
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with the given cipher and mode. If the size of the data is not
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n * blocksize, the data will be padded with '<literal>\0</literal>'.
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</para>
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<para>
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<parameter>Mode</parameter> is one of the MCRYPT_MODE_modename
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constants of one of "ecb", "cbc", "cfb", "ofb", "nofb" or
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"stream".
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</para>
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<para>
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The <parameter>IV</parameter> parameter is used for the
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initialisation in CBC, CFB, OFB modes, and in some algorithms
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in STREAM mode. If you do not supply an IV, while it is needed
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for an algorithm, the function issues a warning and uses an
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IV with all bytes set to '<literal>\0</literal>'.
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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