public static string NGrammarSubstitutionCipher(string text, out string showText, ref NGrammarSubstitutionCipher grammarSubstitutionCipher, CryptType cryptType)
{
string result = string.Empty;
if (grammarSubstitutionCipher == null) grammarSubstitutionCipher = new NGrammarSubstitutionCipher();
var dictionary = grammarSubstitutionCipher.GetGrammarDictionary();
showText = string.Empty;
int index = 0;
foreach (var kvp in dictionary)
{
showText += kvp.Key + "=" + kvp.Value + "; ";
index++;
if (index == 26)
{
showText += "\n";
index = 0;
}
}
switch (cryptType)
{
case CryptType.Encrypt:
result = grammarSubstitutionCipher.Encrypt(text);
break;
case CryptType.Decrypt:
result = grammarSubstitutionCipher.Decrypt(text);
break;
}
return result;
}
public static void NGrammarSubstitutionCipherTest()
{
Console.WriteLine("8. N-граммные подстановки");
Console.WriteLine("Пример работы программы");
cryptogram = "Dima Bezotosnyi is the best";
Console.WriteLine("Текст: " + cryptogram);
grammarSubstitutionCipher = new NGrammarSubstitutionCipher();
Console.WriteLine(grammarSubstitutionCipher.ShowGrammarDictionary());
encryptText = grammarSubstitutionCipher.Encrypt(cryptogram);
Console.WriteLine("Зашифрованый текст: " + encryptText);
decryptText = grammarSubstitutionCipher.Decrypt(encryptText);
Console.WriteLine("Расшифрованый текст: " + decryptText);
Console.WriteLine("\n");
}
private void EncryptButton_Click(object sender, System.EventArgs e)
{
switch ((CipherType)this.CipherTypeComboBox.SelectedIndex)
{
case CipherType.SubstitutionCipher:
this.OutputTextRichTextBox.Text = LogicCipher.SubstitutionCipher(
this.InputTextRichTextBox.Text,
int.Parse(this.CountSubstitutionNumericUpDown.Value.ToString(CultureInfo.InvariantCulture)),
CryptType.Encrypt);
break;
case CipherType.TranspositionCipher:
this.OutputTextRichTextBox.Text = LogicCipher.TranspositionCipher(
this.InputTextRichTextBox.Text,
this.KeyTextBox.Text,
CryptType.Encrypt);
break;
case CipherType.VigenereCipher:
var vigenereCipherType = VigenereCipherType.None;
if (this.StraightCheckBox.Checked)
{
vigenereCipherType = VigenereCipherType.Straight;
}
if (this.ReverseCheckBox.Checked)
{
vigenereCipherType = VigenereCipherType.Reverse;
}
this.OutputTextRichTextBox.Text = LogicCipher.VigenereCipher(
this.InputTextRichTextBox.Text,
this.KeyTextBox.Text,
vigenereCipherType,
CryptType.Encrypt);
break;
case CipherType.VermanCipher:
this.vermanCipher = new VermanCipher(int.Parse(this.CountSubstitutionNumericUpDown.Value.ToString(CultureInfo.InvariantCulture)));
this.OutputTextRichTextBox.Text = LogicCipher.VermanCipher(
this.InputTextRichTextBox.Text,
int.Parse(this.CountSubstitutionNumericUpDown.Value.ToString(CultureInfo.InvariantCulture)),
out this.showText,
ref this.vermanCipher,
CryptType.Encrypt);
this.ShowDialogButton.Enabled = true;
break;
case CipherType.RunningKeyCipher:
this.OutputTextRichTextBox.Text = LogicCipher.RunningKeyCipher(
this.InputTextRichTextBox.Text,
this.KeyTextBox.Text,
CryptType.Encrypt);
break;
case CipherType.CaesarCipher:
this.OutputTextRichTextBox.Text = LogicCipher.CaesarCipher(
this.InputTextRichTextBox.Text,
int.Parse(this.CountSubstitutionNumericUpDown.Value.ToString(CultureInfo.InvariantCulture)),
CryptType.Encrypt);
break;
case CipherType.NGrammarSubstitutionCipher:
this.grammarSubstitutionCipher = new NGrammarSubstitutionCipher();
this.OutputTextRichTextBox.Text = LogicCipher.NGrammarSubstitutionCipher(
this.InputTextRichTextBox.Text,
out this.showText,
ref this.grammarSubstitutionCipher,
CryptType.Encrypt);
this.ShowDialogButton.Enabled = true;
break;
case CipherType.PlayFairCipher:
this.OutputTextRichTextBox.Text = LogicCipher.PlayFairCipher(
this.InputTextRichTextBox.Text,
CryptType.Encrypt);
break;
case CipherType.AutoKeyCipher:
var keyCipherType = AutoKeyCipherType.UseText;
if (this.StraightCheckBox.Checked)
{
keyCipherType = AutoKeyCipherType.UseText;
}
if (this.ReverseCheckBox.Checked)
{
keyCipherType = AutoKeyCipherType.UseCryptogram;
}
this.autoKeyCipher = new AutoKeyCipher(this.KeyTextBox.Text, keyCipherType);
this.OutputTextRichTextBox.Text = LogicCipher.AutoKeyCipher(
this.InputTextRichTextBox.Text,
this.KeyTextBox.Text,
ref this.showText,
ref this.autoKeyCipher,
keyCipherType,
CryptType.Encrypt);
this.ShowDialogButton.Enabled = true;
break;
case CipherType.FractionalCipher:
this.OutputTextRichTextBox.Text = LogicCipher.FractionalCipher(
this.InputTextRichTextBox.Text,
CryptType.Encrypt);
break;
}
}
