Returns an array with the supported keysizes of the opened algorithm (original) (raw)

mcrypt_enc_get_supported_key_sizes

(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)

mcrypt_enc_get_supported_key_sizes — Returns an array with the supported keysizes of the opened algorithm

Warning

This function has been_DEPRECATED_ as of PHP 7.1.0 and_REMOVED_ as of PHP 7.2.0. Relying on this function is highly discouraged.

Description

mcrypt_enc_get_supported_key_sizes ( resource $td ) : array

Parameters

td

The encryption descriptor.

Return Values

Returns an array with the key sizes supported by the algorithm specified by the encryption descriptor. If it returns an empty array then all key sizes between 1 andmcrypt_enc_get_key_size() are supported by the algorithm.

Examples

Example #1 mcrypt_enc_get_supported_key_sizes() example

<?php $td = mcrypt_module_open('rijndael-256', '', 'ecb', ''); var_dump(mcrypt_enc_get_supported_key_sizes($td)); ?>

The above example will output:

array(3) { [0]=> int(16) [1]=> int(24) [2]=> int(32) }