writeDigest method
Writes the state words to out big-endian.
Implementation
@override
void writeDigest(Uint8List out) {
for (var i = 0; i < 8; i++) {
final word = _state[i];
out[i * 4] = word >>> 24;
out[i * 4 + 1] = (word >>> 16) & 0xFF;
out[i * 4 + 2] = (word >>> 8) & 0xFF;
out[i * 4 + 3] = word & 0xFF;
}
}