/// <summary>
/// Шифрование текста.
/// </summary>
/// <param name="Text">Данные, требуемые шифровки.</param>
/// <param name="Key">Ключ</param>
/// <returns></returns>
public static String Encrypt(String Text, Int32 Key)
{
String Result = "", Letter = "";
List <Char> Alphabet = Caesar.GetAlphabet(Text.GetAlphabet());
for (int i = 0; i < Text.Length; i++)
{
if (Regex.IsMatch(Text[i].ToString(), "[А-Яа-я]|[A-Za-z]"))
{
for (int j = 0; j < Alphabet.Count; j++)
{
if (Text[i].ToString().ToUpper() == Alphabet[j].ToString())
{
Letter = ((j + Key) >= Alphabet.Count)
? Alphabet[(j + Key) - Alphabet.Count].ToString()
: Alphabet[j + Key].ToString();
}
}
}
else
{
Letter = Text[i].ToString();
}
Result += Letter;
}
return(Result);
}
/// <summary>
///
/// </summary>
private Alphabet GenerationAlphabet()
{
Alphabet Alphabet = (elem_RU.Checked) ? Alphabet.Cyrillic : Alphabet.Latin;
List <Char> Chars = Caesar.GetAlphabet(Alphabet);
elem_alphabet.Text = Chars.Select(i => i.ToString()).Aggregate((result, item) => result + " " + item) + "\n";
for (int i = (Chars.Count - (int)elem_key.Value); i < Chars.Count; i++)
{
elem_alphabet.Text += Chars[i].ToString() + " ";
}
for (int i = 0; i < (Chars.Count - (int)elem_key.Value); i++)
{
elem_alphabet.Text += Chars[i].ToString() + " ";
}
elem_alphabet.Text = elem_alphabet.Text.Remove(elem_alphabet.Text.Length - 1, 1);
return(Alphabet);
}
/// <summary>
/// Шифровка даннных
/// </summary>
private void elem_encrypt_Click(Object sender, EventArgs e)
{
GenerationAlphabet();
elem_cipherText.Text = Caesar.Encrypt(elem_sourceText.Text, (int)elem_key.Value);
}
/// <summary>
/// Дешифрование текста.
/// </summary>
/// <param name="Text">Данные, требуемые дешифровки.</param>
/// <param name="Key">Ключ</param>
/// <returns></returns>
public static String Decrypt(String Text, Int32 Key)
{
return(Caesar.Encrypt(Text, -Key));
}
