padding method
Implementation
List<F> padding(int inputLen) {
final rate = spec.rate();
if (inputLen != rate) {
throw ArgumentException.invalidOperationArguments(
"padding",
reason: "Input length must match domain length",
);
}
final zero = spec.zero();
final k = ((rate + rate - 1) ~/ rate);
final padLen = k * rate - rate;
return List<F>.filled(padLen, zero);
}