algorithm = $algorithm; $this->mode = $mode; $this->random_source = $random_source; } public function generate_iv() { $this->iv = mcrypt_create_iv(mcrypt_get_iv_size($this->algorithm, $this->mode), $this->random_source); } public function encrypt() { $this->ciphertext = mcrypt_encrypt($this->algorithm, $_SERVER['CRYPT_KEY'], $this->cleartext, $this->mode, $this->iv); } public function decrypt() { $this->cleartext = mcrypt_decrypt($this->algorithm, $_SERVER['CRYPT_KEY'], $this->ciphertext, $this->mode, $this->iv); } } ?>