generateIv method
Generates a random initialization vector (internal)
Implementation
@visibleForTesting
Uint8List generateIv() {
final iv = Uint8List(16);
final words = iv.buffer.asUint32List();
for (var i = 0; i < words.length; i++) {
words[i] = _ivRandom.nextInt(0x100000000);
}
return iv;
}