mcrypt_module_get_supported_key_sizes
(PHP 4 >= 4.0.2, PHP 5)
mcrypt_module_get_supported_key_sizes — Returns an array with the supported keysizes of the opened algorithm
说明
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.
参数
- 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.
返回值
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.
参见
- mcrypt_enc_get_supported_key_sizes() - Returns an array with the supported keysizes of the opened algorithm
