Пример #1
0
 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;
 }
Пример #2
0
 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;
 }