protected override Message ReceiveAuthenticatedMessage(AuthenticatedMessage message)
{
if (message is Bytes)
{
var bytesMessage = message as Bytes;
var bitsAsBytesPayload = bytesMessage.Payload as BitsAsBytes;
if (bytesMessage.Demand == Demand.Estimation)
{
var bobBits = new BitArray(bitsAsBytesPayload.GetBytes().ToList().Skip(8).ToArray());
var aliceBits = new BitArray(DestilationBuffer.GetBytes(bitsAsBytesPayload.Index, bitsAsBytesPayload.Length));
var estimatedQBER = Cascade.EstimateQBER(aliceBits, bobBits);
DestilationBuffer.SetEstimatedQBER(estimatedQBER);
}
if (bytesMessage.Demand == Demand.Confirmation)
{
}
}
if (message is AddingKeyAck)
{
var addingKeyAckMessage = message as AddingKeyAck;
if (DoesAckCorrespondsToLastSentKeyIndex(addingKeyAckMessage.Payload as BlockIdAndKeyAllocation))
{
_lastReceivedKeyIndexAck = _lastSendKeyIndex;
var key = LocalKeyStore.GetKey();
CommonKeyStore.AddNewKey(key, (addingKeyAckMessage.Payload as BlockIdAndKeyAllocation).KeyAllocation);
if (!LocalKeyStore.IsEmpty())
{
_lastSendKeyIndex += 1;
return(PrepareMessageForNewKeyChunk(_lastSendKeyIndex));
}
else
{
return(new NOP());
}
}
else
{
throw new UnexpectedMessageException();
}
}
return(new NOP());
}
static void Main(string[] args)
{
//INICJALIZACJA SYSTEMU
var alreadyAgreedKeys = GetKeyStream(32768, 2);
var initiator = GetInitiator(alreadyAgreedKeys);
var service = GetService(CopyKeys(alreadyAgreedKeys));
var bus = new ClientServerMessageBus()
{
Initiator = initiator, Service = service
};
var keyLength = 32768;
var aliceBits = GetBits(keyLength);
var bobBits = Distortion(aliceBits, 0.05);
var aliceBytes = new byte[aliceBits.Length / 4];
var bobBytes = new byte[aliceBits.Length / 4];
new BitArray(aliceBits).CopyTo(aliceBytes, 0);
new BitArray(bobBits).CopyTo(bobBytes, 0);
bus.Send(initiator, new MoreUndestiledBitsArrived(aliceBytes));
bus.Send(service, new MoreUndestiledBitsArrived(bobBytes));
//INICJACJA PROCEDURY DESTYLACJI
bus.Send(initiator, new InitiateDestilation());
//FAZA ESTYMACJI BŁĘDÓW
bus.Send(initiator, new EstimateQBER(0, 4048 / 2 / 2 / 2));
//FAZA KOREKCJI BŁĘDÓW (3 iteracje)
for (int i = 0; i < 3; i++)
{
bus.Send(initiator, new InitiateCascade()
{
Service = service, Bus = bus
});
initiator.DestilationBuffer.Permute(initiator.CommonKeyStore.ServiceKeyBuffer.GetKey().GetBytes());
service.DestilationBuffer.Permute(service.CommonKeyStore.ServiceKeyBuffer.GetKey().GetBytes());
initiator.DestilationBuffer.SetEstimatedQBER(initiator.DestilationBuffer.GetEstimatedQBER() / 2);
}
//FAZA POTWIERDZENIA
bus.Send(initiator, new EstimateQBER(0, 256));
if (Cascade.EstimateQBER(initiator.DestilationBuffer._bits, service.DestilationBuffer._bits) != 0)
{
throw new ErrorCorrectionFailException();
}
//FAZA AMPLIFIKACJA PRYWATNOŚCI
var privacyLevel = 0.1;
bus.Send(initiator, new AmplifiePrivacy()
{
PrivacyLevel = privacyLevel
});
bus.Send(service, new AmplifiePrivacy()
{
PrivacyLevel = privacyLevel
});
//DODANIE KLUCZA DO SYSTEMU
var klucz = initiator.DestilationBuffer.FlushBuffer();
bus.Send(initiator, new MoreBitsArrived(new List <Key>()
{
new Key(klucz)
}));
bus.Send(service, new MoreBitsArrived(new List <Key>()
{
new Key(service.DestilationBuffer.FlushBuffer())
}));
}