public string DoCycles(string L0, string R0, Keys keys, bool IsReverse)
{
string Ln = "", Rn = "", Ln_1 = L0, Rn_1 = R0;
int i = 0;
if (IsReverse == true)
{
i = 15;
}
while (IsEnough(i, IsReverse))
{
Ln = Rn_1;
Rn = XOR(Ln_1, F(Rn_1, keys.Kn[i]));
Ln_1 = Ln;
Rn_1 = Rn;
if (IsReverse == false)
{
i += 1;
}
else
{
i -= 1;
}
}
string R16L16 = Rn + Ln;
string EncryptedBinaryText = DoPermutation(R16L16, DESData.FinalPermutation);
return EncryptedBinaryText;
}
public Keys SetAllKeys(string C0, string D0)
{
Keys keys = new Keys();
keys.Cn[0] = C0;
keys.Dn[0] = D0;
for (int i = 1; i < keys.Cn.Length; i++)
{
keys.Cn[i] = LeftShift(keys.Cn[i - 1], DESData.Shifts[i]);
keys.Dn[i] = LeftShift(keys.Dn[i - 1], DESData.Shifts[i]);
keys.Kn[i - 1] = DoPermutation(keys.Cn[i] + keys.Dn[i], DESData.PermutationKeyCompression);
}
return keys;
}
