# mcrypt_module_get_supported_key_sizes

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

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

Advertencia

Esta función ha sido declarada OBSOLETA a partir de PHP 7.1.0 y será ELIMINADA a partir de PHP 7.2.0. Su uso está totalmente desaconsejado.

### Descripción

mcrypt_module_get_supported_key_sizes(string `$algorithm`, string `$lib_dir` = ?): array

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

### Parámetros

`algorithm`

  The algorithm to be used.

`lib_dir`

  The optional `lib_dir` parameter can contain the location where the algorithm module is on the system.

### Valores devueltos

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

### Ver también

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