mcrypt_module_get_algo_key_size
(PHP 4 >= 4.0.2)
mcrypt_module_get_algo_key_size -- Returns the maximum supported keysize of the opened modeDescription
int mcrypt_module_get_algo_key_size ( string algorithm [, string lib_dir])This function returns the maximum supported key size of the algorithm specified in bytes. The optional lib_dir parameter can contain the location where the mode module is on the system.