public static void ApplySerpentSBox(ref Word x0, ref Word x1, ref Word x2, ref Word x3, int round) { for (int i = 0; i < x0.Size; i++) { Word input = new Word(4); input.SetBit(x0.GetBit(i), 0); input.SetBit(x1.GetBit(i), 1); input.SetBit(x2.GetBit(i), 2); input.SetBit(x3.GetBit(i), 3); Word output = SerpentSBox(round, input); x0.SetBit(output.GetBit(0), i); x1.SetBit(output.GetBit(1), i); x2.SetBit(output.GetBit(2), i); x3.SetBit(output.GetBit(3), i); } /* ESKİ * for (int i = 0; i < max; i++) * { * x0.SetNibble(SerpentSBox(round, x0.GetNibble(i)), i); * x1.SetNibble(SerpentSBox(round, x1.GetNibble(i)), i); * x2.SetNibble(SerpentSBox(round, x2.GetNibble(i)), i); * x3.SetNibble(SerpentSBox(round, x3.GetNibble(i)), i); * } */ }
public static void ApplySerpentSBox(ref Word x0, ref Word x1, ref Word x2, ref Word x3, int round) { for (int i = 0; i < x0.Size; i++) { Word input = new Word(4); input.SetBit(x0.GetBit(i), 0); input.SetBit(x1.GetBit(i), 1); input.SetBit(x2.GetBit(i), 2); input.SetBit(x3.GetBit(i), 3); Word output = SerpentSBox(round, input); x0.SetBit(output.GetBit(0), i); x1.SetBit(output.GetBit(1), i); x2.SetBit(output.GetBit(2), i); x3.SetBit(output.GetBit(3), i); } /* ESKİ for (int i = 0; i < max; i++) { x0.SetNibble(SerpentSBox(round, x0.GetNibble(i)), i); x1.SetNibble(SerpentSBox(round, x1.GetNibble(i)), i); x2.SetNibble(SerpentSBox(round, x2.GetNibble(i)), i); x3.SetNibble(SerpentSBox(round, x3.GetNibble(i)), i); } */ }
public static void ApplySerpentInvSBox(ref Word x0, ref Word x1, ref Word x2, ref Word x3, int round) { for (int i = 0; i < x0.Size; i++) { Word output = new Word(4); output.SetBit(x0.GetBit(i), 0); output.SetBit(x1.GetBit(i), 1); output.SetBit(x2.GetBit(i), 2); output.SetBit(x3.GetBit(i), 3); Word input = SerpentInvSBox(round, output); x0.SetBit(input.GetBit(0), i); x1.SetBit(input.GetBit(1), i); x2.SetBit(input.GetBit(2), i); x3.SetBit(input.GetBit(3), i); } }
public static void SetBitSlice(ref Word[] w, Word slice, int column) { if (w.Length != 4 || slice.Size != 4) { throw new Exception("Word Array Size should be 4 and Slice length should be 4"); } for (int i = 0; i < 4; i++) { w[i].SetBit(slice.GetBit(i), column); } }
public void SetNibble(Word nb, int block) { if (nb.Size != 4) { throw new Exception("Nibble size should be 4!"); } for (int i = 0; i < 4; i++) { _bits[i + (block * 4)] = nb.GetBit(i); } }
public static void ApplySerpentInvSBox(ref Word x0, ref Word x1, ref Word x2, ref Word x3, int round) { for (int i = 0; i < x0.Size; i++) { Word output = new Word(4); output.SetBit(x0.GetBit(i), 0); output.SetBit(x1.GetBit(i), 1); output.SetBit(x2.GetBit(i), 2); output.SetBit(x3.GetBit(i), 3); Word input = SerpentInvSBox(round, output); x0.SetBit(input.GetBit(0), i); x1.SetBit(input.GetBit(1), i); x2.SetBit(input.GetBit(2), i); x3.SetBit(input.GetBit(3), i); } }
public bool IsEqualTo(string s) { Word w = Word.Parse(s.Replace(" ", "")); if (_size != w.Size) { return(false); } for (int i = 0; i < _size; i++) { if (w.GetBit(i) != _bits[i]) { return(false); } } return(true); }
public static void SetBitSlice(ref Word[] w, Word slice, int column) { if (w.Length != 4 || slice.Size != 4) throw new Exception("Word Array Size should be 4 and Slice length should be 4"); for (int i = 0; i < 4; i++) w[i].SetBit(slice.GetBit(i), column); }
public void SetNibble(Word nb, int block) { if (nb.Size != 4) throw new Exception("Nibble size should be 4!"); for (int i = 0; i < 4; i++) _bits[i + (block * 4)] = nb.GetBit(i); }
public static void OutputToInputProbability(Word output, Word input, int sbox, out int probNumerator, out int probDenominator) { if (input.Size != 4 || output.Size != 4) { throw new Exception("Input and output word sizes should be 4!"); } Word tmpIn = Word.Parse(input.ToString()); Word tmpOut = Word.Parse(output.ToString()); int[] inQ = tmpIn.QuestionMarkPositions(); int[] outQ = tmpOut.QuestionMarkPositions(); int[] inputValues = new int[0]; int[] outputValues = new int[0]; for (int i = 0; i < (1 << inQ.Length); i++) { Word w1 = i.ToWord(inQ.Length); for (int j = 0; j < inQ.Length; j++) { tmpIn.SetBit(w1.GetBit(j), inQ[j]); } int t = tmpIn.ToInt32(); Array.Resize(ref inputValues, inputValues.Length + 1); inputValues[inputValues.Length - 1] = t; } for (int i = 0; i < (1 << outQ.Length); i++) { Word w1 = i.ToWord(outQ.Length); for (int j = 0; j < outQ.Length; j++) { tmpOut.SetBit(w1.GetBit(j), outQ[j]); } int t = tmpOut.ToInt32(); Array.Resize(ref outputValues, outputValues.Length + 1); outputValues[outputValues.Length - 1] = t; } uint[,] ddt = XORTable(SBox[sbox], 4, 4); probNumerator = 0; probDenominator = 0; // Pay: Olası her bir output value için sadece olası input değerlerinin toplamı for (int i = 0; i < outputValues.Length; i++) { for (int j = 0; j < inputValues.Length; j++) { probNumerator += (int)ddt[inputValues[j], outputValues[i]]; } } // Payda: Olası her bir outputValue için tüm input değerlerinin toplamı for (int i = 0; i < outputValues.Length; i++) { for (int j = 0; j < 16; j++) { probDenominator += (int)ddt[j, outputValues[i]]; } } return; }