public string Decrpyt1(string cipher, string key)
{
var keyModel = new CryptionKey();
var blockModel = new Block();
keyModel.Set64Bitkey(key);
keyModel.SetKey(key, false);
var bin = cipher;
var permutedbinBlocks = blockModel.SplitBlockIntoStrings(bin);
var splittedKey = blockModel.SplitBlockIntoStrings(blockModel.ConvertStringToBinaryString(key));
var leftSide = new string[17];
leftSide[16] = permutedbinBlocks[0];
var rightSide = new string[17];
rightSide[16] = permutedbinBlocks[1];
for (int i = 16; i >= 1; i--)
{
//rightSide[i - 1] = blockModel.XORTwoBinaryStrings(rightSide[i], blockModel.XORTwoBinaryStrings(i % 2 == 0 ? splittedKey[0] : splittedKey[1], leftSide[i]));
//rightSide[i - 1] = blockModel.XORTwoBinaryStrings(rightSide[i], blockModel.XORTwoBinaryStrings(keyModel.Get32BitKey(i), leftSide[i]));
rightSide[i - 1] = blockModel.XORTwoBinaryStrings(leftSide[i], FunctionF(rightSide[i], keyModel.GetKey(i)));
leftSide[i - 1] = rightSide[i];
}
var cipherText = blockModel.InverseInitialPermutation(rightSide[0] + leftSide[0]);
return(rightSide[0] + leftSide[0]);
}
public string Encrpyt1(string plainText, string key)
{
var keyModel = new CryptionKey();
var blockModel = new Block();
keyModel.Set64Bitkey(key);
keyModel.SetKey(key, false);
var bin = blockModel.ConvertStringToBinaryString(plainText);
//var permutedBin = blockModel.InitialPermutation(bin);
var permutedbinBlocks = blockModel.SplitBlockIntoStrings(bin);
var splittedKey = blockModel.SplitBlockIntoStrings(blockModel.ConvertStringToBinaryString(key));
var leftSide = new string[17];
leftSide[0] = permutedbinBlocks[0];
var rightSide = new string[17];
rightSide[0] = permutedbinBlocks[1];
for (int i = 1; i <= 16; i++)
{
//rightSide[i] = blockModel.XORTwoBinaryStrings(rightSide[i - 1], blockModel.XORTwoBinaryStrings(i % 2 == 0 ? splittedKey[0] : splittedKey[1], leftSide[i - 1]));
//rightSide[i] = blockModel.XORTwoBinaryStrings(rightSide[i - 1], blockModel.XORTwoBinaryStrings(keyModel.Get32BitKey(i), leftSide[i - 1]));
rightSide[i] = blockModel.XORTwoBinaryStrings(leftSide[i - 1], FunctionF(rightSide[i - 1], keyModel.GetKey(i)));
leftSide[i] = rightSide[i - 1];
}
return(rightSide[16] + leftSide[16]);
}