private EncryptionStrategy GetEncryptionStrategy(Mode mode = Mode.Encrypt)
{
EncryptionStrategy result = null;
String input = inputText.Text;
switch (algorithmDrowdown.Text)
{
case "Железнодорожная изгородь":
try
{
int key = int.Parse(keyInput.Text);
result = new EncryptionStrategies.RailwayFenceEncryptionStrategy(input, key);
}
catch (FormatException err)
{
throw new ArgumentException("Ключ должен быть числом");
}
break;
case "\"Ключевая фраза\"":
result = new EncryptionStrategies.PassPhraseEncryptionStrategy(input, keyInput.Text); break;
case "Метод поворачивающейся решетки":
GridForm gridForm = new GridForm();
if (gridForm.ShowDialog() == DialogResult.OK)
{
result = new EncryptionStrategies.RotatingGridEncryptionStrategy(input, gridForm.GetGrid());
}
break;
case "Шифр Вижинера":
result = new EncryptionStrategies.VigenereEncryptionStrategy(input, keyInput.Text); break;
case "Криптосистема Рабина":
if (rabinKeyForm == null)
{
rabinKeyForm = new RabinKeyForm(mode);
}
rabinKeyForm.Mode = mode;
if (rabinKeyForm.ShowDialog() == DialogResult.OK)
{
result = new EncryptionStrategies.RabinEncryptionStrategy(input, mode == Mode.Encrypt ? rabinKeyForm.PublicKey : rabinKeyForm.PrivateKey);
}
break;
default:
throw new ArgumentException("Выберите метод шифрования");
}
return(result);
}
private EncryptionStrategy GetEncryptionStrategy(Mode mode = Mode.Encrypt)
{
EncryptionStrategy result = null;
String input = inputText.Text;
switch (algorithmDrowdown.Text)
{
case "Железнодорожная изгородь":
try
{
int key = int.Parse(keyInput.Text);
result = new EncryptionStrategies.RailwayFenceEncryptionStrategy(input, key);
}
catch (FormatException err)
{
throw new ArgumentException("Ключ должен быть числом");
}
break;
case "\"Ключевая фраза\"":
result = new EncryptionStrategies.PassPhraseEncryptionStrategy(input, keyInput.Text); break;
case "Метод поворачивающейся решетки":
GridForm gridForm = new GridForm();
if (gridForm.ShowDialog() == DialogResult.OK)
{
result = new EncryptionStrategies.RotatingGridEncryptionStrategy(input, gridForm.GetGrid());
} break;
case "Шифр Вижинера":
result = new EncryptionStrategies.VigenereEncryptionStrategy(input, keyInput.Text); break;
case "Криптосистема Рабина":
if (rabinKeyForm == null)
{
rabinKeyForm = new RabinKeyForm(mode);
}
rabinKeyForm.Mode = mode;
if (rabinKeyForm.ShowDialog() == DialogResult.OK)
{
result = new EncryptionStrategies.RabinEncryptionStrategy(input, mode == Mode.Encrypt ? rabinKeyForm.PublicKey : rabinKeyForm.PrivateKey);
} break;
default:
throw new ArgumentException("Выберите метод шифрования");
}
return result;
}