$finalize method

@override Uint8List $finalize()

Finalizes the message digest with the remaining message block, and returns the output as byte array.

Implementation

@override
Uint8List $finalize() {
  int i, t;
  int hash;

  if (messageLength < 32) {
    hash = seed + prime64_5;
  } else {
    // accumulate
    hash = _rotl(_acc1, 1);
    hash += _rotl(_acc2, 7);
    hash += _rotl(_acc3, 12);
    hash += _rotl(_acc4, 18);

    // merge round
    hash = _merge(hash, _acc1);
    hash = _merge(hash, _acc2);
    hash = _merge(hash, _acc3);
    hash = _merge(hash, _acc4);
  }

  hash += messageLength;

  // process the remaining data
  for (i = t = 0; t + 8 <= pos; ++i, t += 8) {
    hash ^= _accumulate(0, qbuffer[i]);
    hash = _rotl(hash, 27);
    hash *= prime64_1;
    hash += prime64_4;
  }
  for (i <<= 1; t + 4 <= pos; ++i, t += 4) {
    hash ^= sbuffer[i] * prime64_1;
    hash = _rotl(hash, 23);
    hash *= prime64_2;
    hash += prime64_3;
  }
  for (; t < pos; t++) {
    hash ^= buffer[t] * prime64_5;
    hash = _rotl(hash, 11);
    hash *= prime64_1;
  }

  // avalanche
  hash ^= hash >>> 33;
  hash *= prime64_2;
  hash ^= hash >>> 29;
  hash *= prime64_3;
  hash ^= hash >>> 32;

  return Uint8List.fromList([
    hash >>> 56,
    hash >>> 48,
    hash >>> 40,
    hash >>> 32,
    hash >>> 24,
    hash >>> 16,
    hash >>> 8,
    hash,
  ]);
}