PHP简单实现DES加密解密的方法

function des_decrypt($str, $key) { $str = mcrypt_decrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_ECB); $len = strlen($str); $block = mcrypt_get_block_size('des', 'ecb'); $pad = ord($str[$len - 1]); return substr($str, 0, $len - $pad); }