public string Encrypt(string inputStr, bool isText)
{
if (_form != null)
{
_progress = new Utils.Progress(0, inputStr.Length, 1, "Шифрование");
_progress.Show();
}
List <byte> bytes = new List <byte>();
if (isText)
{
bytes = Encoding.Default.GetBytes(inputStr).ToList();
}
else
{
string[] bytesInStrings = inputStr.Split(' ');
foreach (var ch in bytesInStrings)
{
if (ch == "" || ch == " ")
{
continue;
}
bytes.Add(Byte.Parse(ch));
}
}
BigInteger k = KeyGen();
BigInteger s = BigInteger.ModPow(_h, k, _q);
_p = BigInteger.ModPow(_g, k, _q);
List <BigInteger> encryptedMessage = new List <BigInteger>();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < bytes.Count; ++i)
{
encryptedMessage.Add(s * bytes[i]);
sb.Append(encryptedMessage[i].ToString() + '\n');
if (_form != null)
{
_progress.PerformStep();
}
}
if (_form != null)
{
_progress.CloseFormSafe();
}
return(sb.ToString());
}
public string Decrypt(string encryptedText)
{
string[] textNumb = encryptedText.Split('\n');
List <BigInteger> message = new List <BigInteger>();
for (int i = 0; i < textNumb.Length; ++i)
{
if (textNumb[i] != "" && textNumb[i] != "\r")
{
message.Add(BigInteger.Parse(textNumb[i]));
}
}
if (_form != null)
{
_progress = new Utils.Progress(0, message.Count, 1, "Дешифрование");
_progress.Show();
}
BigInteger h = BigInteger.ModPow(_p, _key, _q);
byte[] decryptedMessage = new byte[message.Count];
for (int i = 0; i < message.Count; ++i)
{
decryptedMessage[i] = (byte)(message[i] / h);
if (_form != null)
{
_progress.PerformStep();
}
}
if (_form != null)
{
_progress.CloseFormSafe();
string curExt = WordPad.Helpers.ReadHelper.GetExtention(_form.Text);
if (WordPad.Form1.TxtExts.Any(str => str == curExt))
{
return(Encoding.Default.GetString(decryptedMessage));
}
else
{
StringBuilder sb = new StringBuilder();
foreach (var b in decryptedMessage)
{
sb.Append($"{b} ");
}
return(sb.ToString());
}
}
return(Encoding.Default.GetString(decryptedMessage));
}
public void GenerateSequence(object sender, EventArgs e)
{
string result = Interaction.InputBox("Введите длину генерируемой последовательности (10000)");
int seqLength = 10000;
try {
int tLen = Int32.Parse(result);
seqLength = tLen;
}
catch (FormatException e2) {
MessageBox.Show("Неверное число");
}
catch (OverflowException e3) {
MessageBox.Show("Переполнение");
}
Utils.Progress progressForm = new Utils.Progress(0, seqLength, 1, "Gen progress");
progressForm.Show();
Thread genThread = new Thread(() => {
GenerateSequenceAbstract(seqLength, ref progressForm);
});
genThread.Start();
}
