public List <StateMatrix> Encrypt()
{
if (Text.Length % 16 != 0)
{
int padding = -(Text.Length % 16 - 16);
Text = Text.PadRight(Text.Length + padding, (char)0);
}
List <StateMatrix> matrixBlocks = new List <StateMatrix>();
for (int i = 0, j = 0; i < Text.Length / 16; i++, j += 16)
{
matrixBlocks.Add(new StateMatrix(Text.Substring(j, 16)));
}
List <StateMatrix> result = new List <StateMatrix>();
foreach (StateMatrix matrix in matrixBlocks)
{
List <Round> rounds = new List <Round>();
Round round = new Round();
round.Matrixes.Add(matrix.RoundsToString("Original"));
StateMatrix state = AddRoundKey(matrix, 0);
round.Matrixes.Add(state.RoundsToString("AddRoundKey"));
rounds.Add(round);
TextRounds.Add(rounds);
for (int i = 1; i <= 9; i++)
{
rounds = new List <Round>();
round = new Round();
state = SubBytes(state);
round.Matrixes.Add(state.RoundsToString("SubBytes"));
state = ShiftRows(state);
round.Matrixes.Add(state.RoundsToString("ShiftRows"));
state = MixColumns(state);
round.Matrixes.Add(state.RoundsToString("MixColumns"));
state = AddRoundKey(state, i);
round.Matrixes.Add(state.RoundsToString("AddRoundKey"));
rounds.Add(round);
TextRounds.Add(rounds);
}
rounds = new List <Round>();
round = new Round();
state = SubBytes(state);
round.Matrixes.Add(state.RoundsToString("SubBytes"));
state = ShiftRows(state);
round.Matrixes.Add(state.RoundsToString("ShiftRows"));
state = AddRoundKey(state, 10);
round.Matrixes.Add(state.RoundsToString("AddRoundKey"));
rounds.Add(round);
TextRounds.Add(rounds);
result.Add(state);
}
return(result);
}
public string Decrypt(List <StateMatrix> stateMatrix)
{
string result = "";
foreach (StateMatrix matrix in stateMatrix)
{
List <Round> rounds = new List <Round>();
Round round = new Round();
round.Matrixes.Add(matrix.RoundsToString("Original"));
StateMatrix state = AddRoundKey(matrix, 10);
round.Matrixes.Add(state.RoundsToString("AddRoundKey"));
rounds.Add(round);
InvRounds.Add(rounds);
for (int i = 1; i <= 9; i++)
{
rounds = new List <Round>();
round = new Round();
state = InvShiftRows(state);
round.Matrixes.Add(state.RoundsToString("ShiftRows"));
state = InvSubBytes(state);
round.Matrixes.Add(state.RoundsToString("SubBytes"));
state = AddRoundKey(state, 10 - i);
round.Matrixes.Add(state.RoundsToString("AddRoundKey"));
state = InvMixColumns(state);
round.Matrixes.Add(state.RoundsToString("MixColumns"));
rounds.Add(round);
InvRounds.Add(rounds);
}
rounds = new List <Round>();
round = new Round();
state = InvShiftRows(state);
round.Matrixes.Add(state.RoundsToString("ShiftRows"));
state = InvSubBytes(state);
round.Matrixes.Add(state.RoundsToString("SubBytes"));
state = AddRoundKey(state, 0);
round.Matrixes.Add(state.RoundsToString("AddRoundKey"));
rounds.Add(round);
InvRounds.Add(rounds);
result += state.ToString();
}
return(result);
}