public static string EncryptText(Rottor[] rottors, Rottor reflector, string text)
{
string encryptedText = "";
foreach (char letter in text)
{
rottors = SwitchRottors(rottors);
encryptedText += EncryptLetter(rottors, reflector, letter);
}
return(encryptedText);
}
public static char EncryptLetter(Rottor[] rottors, Rottor reflector, char letter)
{
letter = SumChars(letter, rottors[0].CurrentLetter);
letter = rottors[0].GetCharForward(letter);
letter = SumChars(letter, SubChars(rottors[1].CurrentLetter, rottors[0].CurrentLetter));
letter = rottors[1].GetCharForward(letter);
letter = SumChars(letter, SubChars(rottors[2].CurrentLetter, rottors[1].CurrentLetter));
letter = rottors[2].GetCharForward(letter);
letter = SubChars(letter, rottors[2].CurrentLetter);
letter = reflector.GetCharForward(letter);
letter = SumChars(letter, rottors[2].CurrentLetter);
letter = rottors[2].GetCharBack(letter);
letter = SubChars(letter, SubChars(rottors[2].CurrentLetter, rottors[1].CurrentLetter));
letter = rottors[1].GetCharBack(letter);
letter = SubChars(letter, SubChars(rottors[1].CurrentLetter, rottors[0].CurrentLetter));
letter = rottors[0].GetCharBack(letter);
letter = SubChars(letter, rottors[0].CurrentLetter);
return(letter);
}
public void Process()
{
NetworkStream stream = null;
try
{
stream = client.GetStream();
byte[] data = new byte[64]; // буфер для получаемых данных
while (true)
{
// получаем сообщение
StringBuilder builder = new StringBuilder();
int bytes = 0;
do
{
bytes = stream.Read(data, 0, data.Length);
builder.Append(Encoding.Unicode.GetString(data, 0, bytes));
}while (stream.DataAvailable);
string message = builder.ToString();
if (message.Length > 0)
{
Console.WriteLine(message);
}
char[] alph = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray();
char[] layer1 = "EKMFLGDQVZNTOWYHXUSPAIBRCJ".ToCharArray();
char[] layer2 = "AJDKSIRUXBLHWTMCQGZNPYFVOE".ToCharArray();
char[] layer3 = "BDFHJLCPRTXVZNYEIWGAKMUSQO".ToCharArray();
char[] reflect = "YRUHQSLDPXNGOKMIEBFZCWVJAT".ToCharArray();
Rottor[] rottors =
{
new Rottor(message[0], 'R', alph, layer1),
new Rottor(message[1], 'V', alph, layer2),
new Rottor(message[2], alph, layer3)
};
Rottor reflector = new Rottor('A', alph, reflect);
message = EnigmaAlg.EncryptText(rottors, reflector, message.Substring(3).ToUpper());
data = Encoding.Unicode.GetBytes(message);
stream.Write(data, 0, data.Length);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (stream != null)
{
stream.Close();
}
if (client != null)
{
client.Close();
}
}
}
