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Form1.cs
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Form1.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace CaesarEncryptor
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
comboBox1.Text = "English";
InitTables();
textBoxGaslo.Visible = false;
numericUpDownKey2.Visible = false;
numericUpDownKey3.Visible = false;
numericUpDownKey4.Visible = false;
}
int length;
public bool RichTextBoxChanged = false;
public bool IsSaved = false;
public string FileName = String.Empty;
public DataTable frequenceTableOriginal = new DataTable();
public DataTable frequenceTableDecrypted = new DataTable();
public DataTable frequenceTableUkr = new DataTable();
public DataTable frequenceTableEng = new DataTable();
public DataTable attackTable = new DataTable();
private void ClearRichTextBox()
{
OriginalText.Text = "";
DecryptedText.Text = "";
}
private void InitTables()
{
frequenceTableOriginal.Columns.Add("Character");
frequenceTableOriginal.Columns.Add("Count");
frequenceTableDecrypted.Columns.Add("Character");
frequenceTableDecrypted.Columns.Add("Count");
frequenceTableUkr.Columns.Add("Character");
frequenceTableUkr.Columns.Add("Count");
frequenceTableEng.Columns.Add("Character");
frequenceTableEng.Columns.Add("Count");
attackTable.Columns.Add("Key");
attackTable.Columns.Add("Value");
}
private void Open(string OpenFileName)
{
if (OpenFileName == "")
{
return;
}
else
{
StreamReader readFile = new StreamReader(OpenFileName);
while (!readFile.EndOfStream)
{
OriginalText.Text = readFile.ReadToEnd();
}
readFile.Close();
FileName = OpenFileName;
}
}
private void Save(string SaveFileName)
{
if (SaveFileName == "")
{
return;
}
else
{
File.WriteAllText(SaveFileName, String.Empty);
StreamWriter sw = new StreamWriter(SaveFileName);
sw.WriteLine("Original text ->\n");
for (int i = 0; i < OriginalText.Lines.Length; i++)
{
sw.WriteLine(OriginalText.Lines[i]);
}
sw.WriteLine("\n Decrypted text ->\n");
for (int i = 0; i < DecryptedText.Lines.Length; i++)
{
sw.WriteLine(DecryptedText.Lines[i]);
}
sw.Flush();
sw.Close();
FileName = SaveFileName;
}
}
//private string Encryption(string inputText, int key, string typeAlphabet)
//{
// char[] alphabet = new char[0];
// string encryptText;
// char[] inputTextArray = inputText.ToCharArray();
// if (typeAlphabet == "English")
// {
// alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz,.!".ToCharArray();
// }
// else if (typeAlphabet == "Ukrainian")
// {
// alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯабвгґдеєжзиіїйклмнопрстуфхцчшщьюя,.!".ToCharArray();
// }
// for (int j = 0; j < inputTextArray.Length; j++)
// {
// for (int i = 0; i < alphabet.Length; i++)
// {
// if (inputTextArray[j] == alphabet[i])
// {
// if (char.IsLower(inputTextArray[j]))
// {
// inputTextArray[j] = char.ToLower(alphabet[(i + key) % alphabet.Length]);
// }
// else
// {
// inputTextArray[j] = char.ToUpper(alphabet[(i + key) % alphabet.Length]);
// }
// break;
// }
// }
// }
// encryptText = new string(inputTextArray);
// return encryptText;
//}
//private string Decryption(string inputText, int key, string typeAlphabet)
//{
// string decryptText = "";
// if (typeAlphabet == "English")
// {
// decryptText = Encryption(inputText, 55 - key, typeAlphabet);
// }
// else if (typeAlphabet == "Ukrainian")
// {
// decryptText = Encryption(inputText, 69 - key, typeAlphabet);
// }
// return decryptText;
//}
private string EncryptionTwoDimensionalKey(string inputText, int keyOne, int keyTwo, string typeAlphabet)
{
char[] alphabet = new char[0];
string encryptText;
char[] inputTextArray = inputText.ToCharArray();
if (typeAlphabet == "English")
{
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".ToCharArray();
}
else if (typeAlphabet == "Ukrainian")
{
alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯабвгґдеєжзиіїйклмнопрстуфхцчшщьюя".ToCharArray();
}
for (int j = 0; j < inputTextArray.Length; j++)
{
for (int i = 0; i < alphabet.Length; i++)
{
if (inputTextArray[j] == alphabet[i])
{
if (char.IsLower(inputTextArray[j]))
{
inputTextArray[j] = char.ToLower(alphabet[(i + keyOne * j + keyTwo) % alphabet.Length]);
}
else
{
inputTextArray[j] = char.ToUpper(alphabet[(i + keyOne * j + keyTwo) % alphabet.Length]);
}
break;
}
}
}
encryptText = new string(inputTextArray);
return encryptText;
}
private string EncryptionThreeDimensionalKey(string inputText, int keyOne, int keyTwo, int keyThree, string typeAlphabet)
{
char[] alphabet = new char[0];
string encryptText;
char[] inputTextArray = inputText.ToCharArray();
if (typeAlphabet == "English")
{
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".ToCharArray();
}
else if (typeAlphabet == "Ukrainian")
{
alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯабвгґдеєжзиіїйклмнопрстуфхцчшщьюя".ToCharArray();
}
for (int j = 0; j < inputTextArray.Length; j++)
{
for (int i = 0; i < alphabet.Length; i++)
{
if (inputTextArray[j] == alphabet[i])
{
if (char.IsLower(inputTextArray[j]))
{
inputTextArray[j] = char.ToLower(alphabet[(i + (keyOne * j * j) + (keyTwo * j) + keyThree) % alphabet.Length]);
}
else
{
inputTextArray[j] = char.ToUpper(alphabet[(i + (keyOne * j * j) + (keyTwo * j) + keyThree) % alphabet.Length]);
}
break;
}
}
}
encryptText = new string(inputTextArray);
return encryptText;
}
private string EncryptionGaslo(string inputText, string gaslo, string typeAlphabet)
{
char[] alphabet = new char[0];
string encryptText;
char[] inputTextArray = inputText.ToCharArray();
int key;
int keyCounter = 0;
if (typeAlphabet == "English")
{
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".ToCharArray();
}
else if (typeAlphabet == "Ukrainian")
{
alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯабвгґдеєжзиіїйклмнопрстуфхцчшщьюя".ToCharArray();
}
for (int j = 0; j < inputTextArray.Length; j++)
{
key = Array.IndexOf(alphabet, gaslo[(keyCounter + gaslo.Length) % gaslo.Length]);
for (int i = 0; i < alphabet.Length; i++)
{
if (inputTextArray[j] == alphabet[i])
{
if (char.IsLower(inputTextArray[j]))
{
inputTextArray[j] = char.ToLower(alphabet[(i + key + 1) % alphabet.Length]);
}
else
{
inputTextArray[j] = char.ToUpper(alphabet[(i + key + 1) % alphabet.Length]);
}
keyCounter += 1;
break;
}
}
}
encryptText = new string(inputTextArray);
return encryptText;
}
private string DecryptionTwoDimensionalKey(string inputText, int keyOne, int keyTwo, string typeAlphabet)
{
char[] alphabet = new char[0];
string decryptText;
char[] inputTextArray = inputText.ToCharArray();
if (typeAlphabet == "English")
{
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".ToCharArray();
}
else if (typeAlphabet == "Ukrainian")
{
alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯабвгґдеєжзиіїйклмнопрстуфхцчшщьюя".ToCharArray();
}
for (int j = 0; j < inputTextArray.Length; j++)
{
for (int i = 0; i < alphabet.Length; i++)
{
if (inputTextArray[j] == alphabet[i])
{
if (char.IsLower(inputTextArray[j]))
{
inputTextArray[j] = char.ToLower(alphabet[(i + alphabet.Length - (keyOne * j + keyTwo) % alphabet.Length) % alphabet.Length]);
}
else
{
inputTextArray[j] = char.ToUpper(alphabet[(i + alphabet.Length - (keyOne * j + keyTwo) % alphabet.Length) % alphabet.Length]);
}
break;
}
}
}
decryptText = new string(inputTextArray);
return decryptText;
}
private string DecryptionThreeDimensionalKey(string inputText, int keyOne, int keyTwo, int keyThree, string typeAlphabet)
{
char[] alphabet = new char[0];
string decryptText;
char[] inputTextArray = inputText.ToCharArray();
if (typeAlphabet == "English")
{
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".ToCharArray();
}
else if (typeAlphabet == "Ukrainian")
{
alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯабвгґдеєжзиіїйклмнопрстуфхцчшщьюя".ToCharArray();
}
for (int j = 0; j < inputTextArray.Length; j++)
{
for (int i = 0; i < alphabet.Length; i++)
{
if (inputTextArray[j] == alphabet[i])
{
if (char.IsLower(inputTextArray[j]))
{
inputTextArray[j] = char.ToLower(alphabet[(i + alphabet.Length - (keyOne * j * j + keyTwo * j + keyThree) % alphabet.Length) % alphabet.Length]);
}
else
{
inputTextArray[j] = char.ToUpper(alphabet[(i + alphabet.Length - (keyOne * j * j + keyTwo * j + keyThree) % alphabet.Length) % alphabet.Length]);
}
break;
}
}
}
decryptText = new string(inputTextArray);
return decryptText;
}
private string DecryptionGaslo(string inputText, string gaslo, string typeAlphabet)
{
char[] alphabet = new char[0];
string decryptText;
char[] inputTextArray = inputText.ToCharArray();
int key;
int keyCounter = 0;
if (typeAlphabet == "English")
{
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".ToCharArray();
}
else if (typeAlphabet == "Ukrainian")
{
alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯабвгґдеєжзиіїйклмнопрстуфхцчшщьюя".ToCharArray();
}
for (int j = 0; j < inputTextArray.Length; j++)
{
key = Array.IndexOf(alphabet, gaslo[(keyCounter + gaslo.Length) % gaslo.Length]);
for (int i = 0; i < alphabet.Length; i++)
{
if (inputTextArray[j] == alphabet[i])
{
if (typeAlphabet == "English")
{
if (char.IsLower(inputTextArray[j]))
{
inputTextArray[j] = char.ToLower(alphabet[(i + (52 - (key + 1))) % alphabet.Length]);
}
else
{
inputTextArray[j] = char.ToUpper(alphabet[(i + (52 - (key + 1))) % alphabet.Length]);
}
keyCounter += 1;
break;
}
else if (typeAlphabet == "Ukrainian")
{
if (char.IsLower(inputTextArray[j]))
{
inputTextArray[j] = char.ToLower(alphabet[(i + (66 - (key + 1))) % alphabet.Length]);
}
else
{
inputTextArray[j] = char.ToUpper(alphabet[(i + (66 - (key + 1))) % alphabet.Length]);
}
keyCounter += 1;
break;
}
}
}
}
decryptText = new string(inputTextArray);
return decryptText;
}
private bool isValidText(string inputText, string typeAlphabet)
{
bool isValid;
if (typeAlphabet == "English")
{
isValid = Regex.IsMatch(inputText, "^[a-zA-Z ,.!\n]+$");
if (isValid)
{
return true;
}
}
else if (typeAlphabet == "Ukrainian")
{
isValid = Regex.IsMatch(inputText, "^[А-ЩЬЮЯҐЄІЇа-щьюяґєії ,.!\n]+$");
if (isValid)
{
return true;
}
}
return false;
}
//private bool isValidKey(int key, string typeAlphabet)
//{
// if (typeAlphabet == "English")
// {
// if (key < 29 && key >= 0)
// {
// return true;
// }
// }
// else if (typeAlphabet == "Ukrainian")
// {
// if (key < 36 && key >= 0)
// {
// return true;
// }
// }
// else if (typeAlphabet == "pic")
// {
// if (key < 256 && key >= 0)
// {
// return true;
// }
// }
// return false;
//}
private void toolStripMenuItem2_Click(object sender, EventArgs e)
{
About form = new About();
form.Show();
}
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
//saveToolStripMenuItem.Enabled = false;
if (RichTextBoxChanged == true)
{
DialogResult dialogResult = MessageBox.Show("Save current content?", "Question", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
saveToolStripMenuItem.PerformClick();
//ClearRichTextBox();
this.Text = "Caesar";
}
else if (dialogResult == DialogResult.No)
{
ClearRichTextBox();
this.Text = "Caesar";
}
}
else
{
ClearRichTextBox();
this.Text = "Caesar";
}
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
if (RichTextBoxChanged == true)
{
if (DecryptedText.Text != String.Empty)
{
DialogResult dialogResult = MessageBox.Show("Save current content?", "", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
saveToolStripMenuItem.PerformClick();
}
else if (dialogResult == DialogResult.No)
{
DialogResult res;
res = openFileDialog1.ShowDialog();
if (res == DialogResult.OK)
{
Open(openFileDialog1.FileName);
RichTextBoxChanged = false;
}
FileName = openFileDialog1.FileName;
this.Text = Path.GetFileNameWithoutExtension(FileName);
}
}
else
{
DialogResult res;
res = openFileDialog1.ShowDialog();
if (res == DialogResult.OK)
{
Open(openFileDialog1.FileName);
RichTextBoxChanged = false;
}
FileName = openFileDialog1.FileName;
this.Text = Path.GetFileNameWithoutExtension(FileName);
}
}
else
{
DialogResult res;
res = openFileDialog1.ShowDialog();
if (res == DialogResult.OK)
{
Open(openFileDialog1.FileName);
}
FileName = openFileDialog1.FileName;
this.Text = Path.GetFileNameWithoutExtension(FileName);
}
saveToolStripMenuItem.Enabled = true;
IsSaved = true;
RichTextBoxChanged = false;
}
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(FileName))
{
saveAsToolStripMenuItem.PerformClick();
}
else
{
Save(FileName);
RichTextBoxChanged = false;
IsSaved = true;
saveToolStripMenuItem.Enabled = true;
}
}
private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
DialogResult res;
saveFileDialog1.Filter = "Text files (*.txt)|*.txt|Word Doucment (*.doc)|*.doc;*.docx|All files (*.*)|*.*";
res = saveFileDialog1.ShowDialog();
if (res == DialogResult.OK)
{
Save(saveFileDialog1.FileName);
RichTextBoxChanged = false;
IsSaved = true;
}
FileName = saveFileDialog1.FileName;
saveToolStripMenuItem.Enabled = true;
this.Text = Path.GetFileNameWithoutExtension(FileName);
}
private void encryptButton_Click(object sender, EventArgs e)
{
string text = OriginalText.Text;
int keyOne = Convert.ToInt32(numericUpDownKey2.Value);
int keyTwo = Convert.ToInt32(numericUpDownKey3.Value);
int keyThree = Convert.ToInt32(numericUpDownKey4.Value);
string gaslo = textBoxGaslo.Text;
string alphabet = comboBox1.SelectedItem.ToString();
if (!isValidText(text, alphabet))
{
MessageBox.Show("Text is not valid!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (radioButton1.Checked)
{
if (isValidText(text, alphabet))
{
DecryptedText.Text = EncryptionTwoDimensionalKey(text, keyOne, keyTwo, alphabet);
}
}
else if (radioButton2.Checked)
{
if (isValidText(text, alphabet))
{
DecryptedText.Text = EncryptionThreeDimensionalKey(text, keyOne, keyTwo, keyThree, alphabet);
}
}
else if (radioButton3.Checked)
{
if (!isValidText(gaslo, alphabet) || gaslo.Length > text.Length)
{
MessageBox.Show("Key is not valid!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (isValidText(text, alphabet) && gaslo.Length <= text.Length)
{
DecryptedText.Text = EncryptionGaslo(text, gaslo, alphabet);
}
}
RichTextBoxChanged = true;
//string text = OriginalText.Text;
//int key = Convert.ToInt32(numericUpDown1.Value);
//string alphabet = comboBox1.SelectedItem.ToString();
//if (!isValidText(text, alphabet))
//{
// MessageBox.Show("Text contains forbitten symbols", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
//}
//if (!isValidKey(key, alphabet))
//{
// MessageBox.Show("Shift key is not valid", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
// numericUpDown1.Value = 1;
// key = 1;
//}
//if (isValidText(text, alphabet))
//{
// DecryptedText.Text = Encryption(text, key, alphabet);
//}
//RichTextBoxChanged = true;
}
private void decryptButton_Click(object sender, EventArgs e)
{
string text = OriginalText.Text;
int keyOne = Convert.ToInt32(numericUpDownKey2.Value);
int keyTwo = Convert.ToInt32(numericUpDownKey3.Value);
int keyThree = Convert.ToInt32(numericUpDownKey4.Value);
string gaslo = textBoxGaslo.Text;
string alphabet = comboBox1.SelectedItem.ToString();
if (!isValidText(text, alphabet))
{
MessageBox.Show("Text is not valid!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (radioButton1.Checked)
{
if (isValidText(text, alphabet))
{
DecryptedText.Text = DecryptionTwoDimensionalKey(text, keyOne, keyTwo, alphabet);
}
}
else if (radioButton2.Checked)
{
if (isValidText(text, alphabet))
{
DecryptedText.Text = DecryptionThreeDimensionalKey(text, keyOne, keyTwo, keyThree, alphabet);
}
}
else if (radioButton3.Checked)
{
if (!isValidText(gaslo, alphabet) || gaslo.Length > text.Length)
{
MessageBox.Show("Key is not valid!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (isValidText(text, alphabet) && gaslo.Length <= text.Length)
{
DecryptedText.Text = DecryptionGaslo(text, gaslo, alphabet);
}
}
RichTextBoxChanged = true;
//string text = OriginalText.Text;
//int key = Convert.ToInt32(numericUpDown1.Value);
//string alphabet = comboBox1.SelectedItem.ToString();
//if (!isValidText(text, alphabet))
//{
// MessageBox.Show("Text contains forbitten symbols", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
//}
//if (!isValidKey(key, alphabet))
//{
// MessageBox.Show("Shift key is not valid", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
// numericUpDown1.Value = 1;
// key = 1;
//}
//if (isValidText(text, alphabet))
//{
// DecryptedText.Text = Decryption(text, key, alphabet);
//}
//RichTextBoxChanged = true;
}
private void outputFreuency_Click(object sender, EventArgs e)
{
frequenceTableDecrypted.Clear();
if (!string.IsNullOrEmpty(DecryptedText.Text))
{
Dictionary<char, int> dictChar = new Dictionary<char, int>();
foreach (char ch in DecryptedText.Text)
{
if (dictChar.ContainsKey(ch))
{
dictChar[ch] += 1;
}
else
{
dictChar[ch] = 1;
}
}
foreach (var item in dictChar)
{
if (!Char.IsWhiteSpace(item.Key))
{
DataRow row = frequenceTableDecrypted.NewRow();
row[0] = item.Key;
row[1] = item.Value;
frequenceTableDecrypted.Rows.Add(row);
}
}
}
else
{
MessageBox.Show("Text is empty!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
FrequenceDecrypted form = new FrequenceDecrypted();
form.Show(this);
}
private void inputFrequency_Click(object sender, EventArgs e)
{
frequenceTableOriginal.Clear();
if (!string.IsNullOrEmpty(OriginalText.Text))
{
Dictionary<char, int> dictChar = new Dictionary<char, int>();
foreach (char ch in OriginalText.Text)
{
if (dictChar.ContainsKey(ch))
{
dictChar[ch] += 1;
}
else
{
dictChar[ch] = 1;
}
}
foreach (var item in dictChar)
{
if (!Char.IsWhiteSpace(item.Key))
{
DataRow row = frequenceTableOriginal.NewRow();
row[0] = item.Key;
row[1] = item.Value;
frequenceTableOriginal.Rows.Add(row);
}
}
}
else
{
MessageBox.Show("Text is empty!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
FrequenceOriginal form = new FrequenceOriginal();
form.Show(this);
}
private void ukrainianToolStripMenuItem_Click(object sender, EventArgs e)
{
frequenceTableUkr.Clear();
Dictionary<char, double> dictChar = new Dictionary<char, double>();
string alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯ";
List<double> frequency = new List<double>() { 8.34, 1.53, 5.50, 1.59, 0.01, 3.06, 4.59, 0.39, 0.71, 2.10, 6.00, 1.24, 6.23, 0.84, 4.00, 3.93, 3.02, 7.10, 9.28, 2.84, 5.48, 4.57, 4.77, 3.38, 0.35, 1.17, 1.02, 1.15, 0.71, 0.32, 1.83, 0.70, 2.16 };
int counter = 0;
foreach (char ch in alphabet)
{
dictChar[ch] = frequency[counter];
counter++;
}
foreach (var item in dictChar)
{
if (!Char.IsWhiteSpace(item.Key))
{
DataRow row = frequenceTableUkr.NewRow();
row[0] = item.Key;
row[1] = item.Value;
frequenceTableUkr.Rows.Add(row);
}
}
FrequenceUkr form = new FrequenceUkr();
form.Show(this);
}
private void englishToolStripMenuItem_Click(object sender, EventArgs e)
{
frequenceTableEng.Clear();
Dictionary<char, double> dictChar = new Dictionary<char, double>();
string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
List<double> frequency = new List<double>() { 8.34, 1.54, 2.73, 4.14, 12.60, 2.03, 1.92, 6.11, 6.71, 0.23, 0.87, 4.24, 2.53, 6.80, 7.70, 1.66, 0.09, 5.68, 6.11, 9.37, 2.85, 1.06, 2.34, 0.20, 2.04, 0.06 };
int counter = 0;
foreach (char ch in alphabet)
{
dictChar[ch] = frequency[counter];
counter++;
}
foreach (var item in dictChar)
{
if (!Char.IsWhiteSpace(item.Key))
{
DataRow row = frequenceTableEng.NewRow();
row[0] = item.Key;
row[1] = item.Value;
frequenceTableEng.Rows.Add(row);
}
}
FrequenceEng form = new FrequenceEng();
form.Show(this);
}
private void printToolStripMenuItem_Click(object sender, EventArgs e)
{
printDialog1.Document = printDocument1;
if (printDialog1.ShowDialog() == DialogResult.OK)
{
printDocument1.Print();
}
else
{
MessageBox.Show("Print Cancelled");
}
}
private void printDocument1_PrintPage_1(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
Font myFont = new Font("Arial", 14, FontStyle.Regular, GraphicsUnit.Pixel);
float leftMargin = e.MarginBounds.Left;
if (!string.IsNullOrEmpty(DecryptedText.Text))
{
e.Graphics.DrawString("Original text:\n" + OriginalText.Text + "\n\nDecrytped text:\n" + DecryptedText.Text, myFont, Brushes.Black, leftMargin, 150, new StringFormat());
}
else if (!string.IsNullOrEmpty(OriginalText.Text))
{
e.Graphics.DrawString("Original text:\n" + OriginalText.Text, myFont, Brushes.Black, leftMargin, 150, new StringFormat());
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void bruteForceButton_Click(object sender, EventArgs e)
{
string inputText = OriginalText.Text;
string encryptText = DecryptedText.Text;
string typeAlphabet = comboBox1.SelectedItem.ToString();
string attackResult = "";
if (!string.IsNullOrEmpty(inputText) || !string.IsNullOrEmpty(encryptText))
{
if (radioButton1.Checked)
{
string[] attackResults = (from keyOne in Enumerable.Range(1, 10)
from keyTwo in Enumerable.Range(1, 10)
let keys = "Key one: " + keyOne.ToString() + "\n" + "Key two: " + keyTwo.ToString()
let encrypt = EncryptionTwoDimensionalKey(inputText, keyOne, keyTwo, typeAlphabet)
where string.Equals(encrypt, encryptText)
select keys).ToArray();
attackResult = string.Join("\n", attackResults);
}
else if (radioButton2.Checked)
{
string[] attackResults = (from keyOne in Enumerable.Range(1, 10)
from keyTwo in Enumerable.Range(1, 10)
from keyThree in Enumerable.Range(1, 10)
let keys = "Key one: " + keyOne.ToString() + "\n" + "Key two: " + keyTwo.ToString() + "\n" + "Key three: " + keyThree.ToString()
let encrypt = EncryptionThreeDimensionalKey(inputText, keyOne, keyTwo, keyThree, typeAlphabet)
where string.Equals(encrypt, encryptText)
select keys).ToArray();
attackResult = string.Join("\n", attackResults);
}
else if (radioButton3.Checked)
{
attackResult = "Key: ";
string alphabet = "";
if (typeAlphabet == "English")
{
alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
}
else if (typeAlphabet == "Ukrainian")
{
alphabet = "АБВГҐДЕЄЖЗИІЇЙКЛМНОПРСТУФХЦЧШЩЬЮЯ";
}
if (inputText.Length == encryptText.Length)
{
for (int i = 0; i < encryptText.Length; i++)
{
if (char.IsLetter(encryptText[i]))
{
foreach (char ch in alphabet)
{
if (encryptText[i].ToString() == EncryptionGaslo(inputText[i].ToString(), ch.ToString(), typeAlphabet))
{
attackResult += ch;
break;
}
}
}
}
}
else
{
MessageBox.Show("Length of the texts is different!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
attackResult = new string(attackResult.Take(length + 5).ToArray());
}
MessageBox.Show(attackResult, "Attack");
}
else
{
MessageBox.Show("Text is empty!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//string text = OriginalText.Text;
//string alphabet = comboBox1.SelectedItem.ToString();
//if (string.IsNullOrEmpty(OriginalText.Text))
//{
// MessageBox.Show("Text is empty!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
// return;
//}
//else
//{
// if (!isValidText(text, alphabet))
// {
// MessageBox.Show("Text contains forbitten symbols", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
// return;
// }
// else
// {
// if (!isValidKey(Convert.ToInt32(numericUpDownKey2.Value), alphabet))
// {
// MessageBox.Show("Shift key is not valid", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
// numericUpDownKey2.Value = 1;
// }
// else
// {
// if (!string.IsNullOrEmpty(text))
// {
// Dictionary<int, string> dictAttack = new Dictionary<int, string>();
// if (alphabet == "English")
// {
// int key = Convert.ToInt32(numericUpDownKey2.Value);
// for (int iter = 0; iter < 29; ++iter)
// {
// DecryptedText.Text = Decryption(OriginalText.Text, key, "English");
// DialogResult dialogResult = MessageBox.Show("Is it correct?", "Question", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
// if(dialogResult == DialogResult.Yes)
// {
// break;
// }
// if(key == 29)
// {
// key = 0;
// }
// key++;
// }
// }
// else if (alphabet == "Ukrainian")
// {
// int key = Convert.ToInt32(numericUpDownKey2.Value);
// for (int iter = 0; iter < 36; ++iter)
// {
// DecryptedText.Text = Decryption(OriginalText.Text, key, "Ukrainian"); DialogResult dialogResult = MessageBox.Show("Is it correct?", "Question", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
// if (dialogResult == DialogResult.Yes)
// {
// break;
// }
// if (key == 36)
// {
// key = 0;
// }
// key++;
// }
// }
// }
// }
// }
//}
}
private void button1_Click(object sender, EventArgs e)
{
//int key = Convert.ToInt32(numericUpDown1.Value);
//if (isValidKey(key, "pic"))
//{
// DialogResult res;
// res = openFileDialog1.ShowDialog();
// FileName = openFileDialog1.FileName;
// Bitmap img = new Bitmap(FileName);
// string[] subs = FileName.Split('.');
// if (key > 0)
// {
// for (int i = 0; i < img.Width; i++)
// {
// for (int j = 0; j < img.Height; j++)
// {