multiHash function

BigInt multiHash(List<BigInt> arr)

Chunks inputs in five elements and hash with Poseidon all them togheter @param {Array} arr - inputs hash @returns {BigInt} - final hash

Implementation

BigInt multiHash(List<BigInt> arr) {
  BigInt r = BigInt.zero;
  for (int i = 0; i < arr.length; i += 5) {
    const fiveElems = [];
    for (int j = 0; j < 5; j++) {
      if (i + j < arr.length) {
        fiveElems.add(arr[i + j]);
      } else {
        fiveElems.add(BigInt.zero);
      }
    }
    Pointer<Uint8> ptr =
        Uint8ArrayUtils.toPointer(Uint8List.fromList(fiveElems as List<int>));
    //final ph = eddsaBabyJub.hashPoseidon(ptr);
    //r = F.add(r, ph);
  }
  // TODO: fix this
  return BigInt.zero;
  //return F.normalize(r);
}