mcrypt_module_open Opens the module of the algorithm and the mode to be used &reftitle.description; resourcemcrypt_module_open stringalgorithm stringalgorithm_directory stringmode stringmode_directory This function opens the module of the algorithm and the mode to be used. The name of the algorithm is specified in algorithm, e.g. "twofish" or is one of the MCRYPT_ciphername constants. The module is closed by calling mcrypt_module_close. &reftitle.parameters; algorithm The algorithm to be used. algorithm_directory The algorithm_directory and mode_directory are used to locate the encryption modules. When you supply a directory name, it is used. When you set one of these to the empty string (""), the value set by the mcrypt.algorithms_dir or mcrypt.modes_dir ini-directive is used. When these are not set, the default directories that are used are the ones that were compiled in into libmcrypt (usually /usr/local/lib/libmcrypt). mode The mode to be used. mode_directory &reftitle.returnvalues; Normally it returns an encryption descriptor, or &false; on error. &reftitle.examples; ]]> The first line in the example above will try to open the DES cipher from the default directory and the EBC mode from the directory /usr/lib/mcrypt-modes. The second example uses strings as name for the cipher and mode, this only works when the extension is linked against libmcrypt 2.4.x or 2.5.x. ]]> &reftitle.seealso; mcrypt_module_close mcrypt_generic mdecrypt_generic mcrypt_generic_init mcrypt_generic_deinit