Mcrypt
PHP Manual

mcrypt_module_get_algo_key_size

(PHP 4 >= 4.0.2, PHP 5, PHP 7)

mcrypt_module_get_algo_key_sizeReturns the maximum supported keysize of the opened mode

Описание

int mcrypt_module_get_algo_key_size ( string $algorithm [, string $lib_dir ] )

Gets the maximum supported keysize of the opened mode.

Список параметров

algorithm

The algorithm name.

lib_dir

This optional parameter can contain the location where the mode module is on the system.

Возвращаемые значения

This function returns the maximum supported key size of the algorithm specified in bytes.


Mcrypt
PHP Manual