帮忙将php函数转成go方法？

public function encrypt($input,$key){ $size = mcrypt_get_block_size (MCRYPT_3DES, MCRYPT_MODE_ECB ); $input = $this->pkcs7_pad($input, $size); $key = base64_decode($key); $td = @mcrypt_module_open(MCRYPT_3DES, '', MCRYPT_MODE_ECB, ''); @mcrypt_generic_init($td, $key,''); $data = mcrypt_generic($td, $input); mcrypt_generic_deinit($td); mcrypt_module_close($td); return strtoupper(bin2hex($data)); }