public void EncryptRoutine(Dictionary <string, uint> Routine)
{
byte[] entropy = new byte[32];
byte[] randomOrder = new byte[32];
for (int i = 0; i < 32; i++)
{
entropy[i] = (byte)this._random.Next(0, 255);
randomOrder[i] = (byte)this._random.Next(0, 4);
}
Registers randomRegister = Registers.EAX; // TODO: fix this
RoutineInfo routineInfo = new RoutineInfo()
{
Entropy = entropy,
RandomOrder = randomOrder,
Register = randomRegister
};
for (uint i = Routine["start"]; i < Routine["end"]; i++)
{
routineInfo.Byte = this._data[i];
byte encryptedByte = this.EncryptionStub(routineInfo);
Console.WriteLine("oldByte: {0:X2} newByte:; {1:X2}\n", routineInfo.Byte, encryptedByte);
}
foreach (var _byte in this._decryptionStub)
{
Console.Write("{0:X2} ", _byte);
}
}
// deterministic function za svaki bajt idu iste instrukcije!
private byte EncryptionStub(RoutineInfo RoutineInfo)
{
byte newByte = RoutineInfo.Byte;
Instruction instruction = null;
List <byte> decryptionStub = new List <byte>();
for (int i = 0; i < this._rounds; i++)
{
switch (RoutineInfo.RandomOrder[i])
{
case 0: // ADD
newByte = (byte)(newByte + RoutineInfo.Entropy[i]);
instruction = new Instruction(
Mnemonics.SUB,
RoutineInfo.Register,
RoutineInfo.Entropy[i],
this._is64bit
);
Console.WriteLine("SUB {0:X2}", RoutineInfo.Entropy[i]);
break;
case 1: // SUB
newByte = (byte)(newByte - RoutineInfo.Entropy[i]);
instruction = new Instruction(
Mnemonics.ADD,
RoutineInfo.Register,
RoutineInfo.Entropy[i],
this._is64bit
);
Console.WriteLine("ADD {0:X2}", RoutineInfo.Entropy[i]);
break;
case 2: // XOR
newByte = (byte)(newByte ^ RoutineInfo.Entropy[i]);
instruction = new Instruction(
Mnemonics.XOR,
RoutineInfo.Register,
RoutineInfo.Entropy[i],
this._is64bit
);
Console.WriteLine("e/d: XOR {0:X2}", RoutineInfo.Entropy[i]);
break;
case 3: // NOT
//newByte = (byte)(~RoutineInfo.Entropy[i]);
newByte = unchecked ((byte)(~newByte));
instruction = new Instruction(
Mnemonics.NOT,
RoutineInfo.Register,
null,
this._is64bit
);
Console.WriteLine("e/d: NOT {0:X2}", RoutineInfo.Entropy[i]);
break;
}
//decryptionStub.AddRange(instruction.ByteCode);
decryptionStub.InsertRange(0, instruction.ByteCode);
}
this._decryptionStub = decryptionStub;
Console.WriteLine("\n");
return(newByte);
}
