rijndael

MCRYPT_ENC_GET_SUPPORTED_KEY_SIZES(3)					 1				     MCRYPT_ENC_GET_SUPPORTED_KEY_SIZES(3)

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

SYNOPSIS

       array mcrypt_enc_get_supported_key_sizes (resource  $td)

DESCRIPTION

	Gets the supported key sizes of the opened algorithm.

PARAMETERS

	      o $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 and mcrypt_enc_get_key_size(3) are supported by the algorithm.

EXAMPLES

       Example #1

	      mcrypt_enc_get_supported_key_sizes(3) 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)
	      }

PHP Documentation Group 										     MCRYPT_ENC_GET_SUPPORTED_KEY_SIZES(3)