public function isSupported(FOFUtilsPhpfunc $phpfunc = null) { if (!is_object($phpfunc) || !$phpfunc instanceof $phpfunc) { $phpfunc = new FOFUtilsPhpfunc(); } if (!$phpfunc->function_exists('openssl_get_cipher_methods')) { return false; } if (!$phpfunc->function_exists('openssl_random_pseudo_bytes')) { return false; } if (!$phpfunc->function_exists('openssl_cipher_iv_length')) { return false; } if (!$phpfunc->function_exists('openssl_encrypt')) { return false; } if (!$phpfunc->function_exists('openssl_decrypt')) { return false; } if (!$phpfunc->function_exists('hash')) { return false; } if (!$phpfunc->function_exists('hash_algos')) { return false; } $algorightms = $phpfunc->openssl_get_cipher_methods(); if (!in_array('aes-128-cbc', $algorightms)) { return false; } $algorightms = $phpfunc->hash_algos(); if (!in_array('sha256', $algorightms)) { return false; } return true; }