update method
Update hash content with the given data.
Implementation
void update(Uint8List? data) {
assert(data != null);
for (var i = 0; i < data!.length; i++) {
if (_pointer == _blockSize) {
_counter += _pointer;
_compress(false);
_pointer = 0;
}
// Copy input array to input block.
_block[_pointer++] = data[i];
}
}