mcrypt_module_get_supported_key_sizes

Returns an array with the supported keysizes of the opened algorithm

&warn.deprecated.function-7-1-0.removed-7-2-0;
&reftitle.description; `array` `mcrypt_module_get_supported_key_sizes` `string` `algorithm` `string` `lib_dir`

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.

&reftitle.parameters;

`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.

&reftitle.returnvalues;

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.

&reftitle.seealso;

- `mcrypt_enc_get_supported_key_sizes`