INT 32 Encrypt

#region Encryption for INT by Eddy^CZ 2018
  public static int DecryptLdcI4(int input, int Key)
  {
   var HashProvider = SHA512.Create();
   byte[] KEY = HashProvider.ComputeHash(BitConverter.GetBytes(Key));
   int IV0 = 0;
   int IV1 = 0;
   int IV2 = 0;
   int IV3 = 0;
   int[] IVS = new int[KEY.Length];
   for (int a = 0; a < IVS.Length; a++)
   {
    IVS[a] = KEY[a] % (a + 1) ^ (int)input ^ (a + 1) ^ (int)input;
   }
   for (int i = 0; i < IVS.Length; i++)
   {
    int X = (int)Math.Log10(IVS[i]);
    IV0 ^= IVS[i] ^ (((IVS[i] ^ (int)X)) * i >> (int)((float)i * (float)0.25F));
    IV1 += IVS[i] >> (((IVS[i] ^ (int)X)) * i << (int)((short)i + (float)0.58F));
    IV2 -= IVS[i] << (((IVS[i] ^ (int)X)) * i >> (int)((float)i * (float)0.41F));
    IV3 ^= IVS[i] + (((IVS[i] ^ (int)X)) * i << (int)((float)i - (float)0.99F));
   }
   return (IV0 ^ input) ^ (IV1 ^ input) ^ (IV2 ^ input) ^ IV3;
  }
  #endregion