deriveKey method
Derive key from given input and put it in out
at offset outOff
.
Implementation
@override
int deriveKey(Uint8List? inp, int inpOff, Uint8List out, int outOff) {
// append input to the 'info' part for key derivation
if (inp != null) {
// TODO: find better way to concatenate Uint8Lists with null elements
_info = combineLists(_info!, inp);
}
return _generate(out, outOff, keySize);
}