public byte[] AESTest(byte[] Block, byte[] Password) //Тестирование для контрольных значений
{
In = Block;
key = Password;
State = new GF[4, Nb];
for (int r = 0; r < 4; r++)
{
for (int c = 0; c < Nb; c++)
{
State[r, c] = new GF();
State[r, c] = In[r + (4 * c)];
}
}
KeyExpansion();
return(Cipher(Block));
}
public byte[] Cipher(byte[] Block)
{
In = Block;
State = new GF[4, Nb];
for (int r = 0; r < 4; r++)
{
for (int c = 0; c < Nb; c++)
{
State[r, c] = new GF();
State[r, c] = In[r + (4 * c)];
}
}
//
//Print(State);
AddRoundKey(0);
//Print(State);
for (int round = 1; round < Nr; round++)
{
SubBytes();
//Print(State);
ShiftRows();
//Print(State);
MixColumns();
//Print(State);
AddRoundKey(round);
//Print(State);
}
//Print(State);
SubBytes();
//Print(State);
ShiftRows();
//Print(State);
AddRoundKey(Nr);
//Print(State);
Out = new byte[In.Length];
for (int r = 0; r < 4; r++)
{
for (int c = 0; c < Nb; c++)
{
Out[r + (4 * c)] = State[r, c].Value;
}
}
return(Out);
}
private void KeyExpansion()
{
Rcon = new GF(0x01);
w = new byte[Nb * (Nr + 1), 4];
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
w[i, j] = key[4 * i + j];
}
}
byte[] temp = new byte[4];
for (int i = Nk; i < Nb * (Nr + 1); i++)
{
for (int k = 0; k < temp.Length; k++)
{
temp[k] = w[i - 1, k];
}
if (i % Nk == 0)
{
temp = SubWord(RotWord(temp));
temp[0] = (byte)(temp[0] ^ Rcon.Value);
Rcon = Rcon * 0x02;
}
else if (Nk > 6 && i % Nk == 4)
{
temp = SubWord(temp);
}
for (int j = 0; j < 4; j++)
{
w[i, j] = (byte)(w[i - Nk, j] ^ temp[j]);
}
//Print(w);
//Console.WriteLine("______");
//Print(Rcon.Value);
}
}
