public int Read(byte[] buffer, int offset, int count)
{
if (_inputBuffer.Count < count)
{
var readBuffer = _readBuffer;
int read;
try
{
read = _dataProvider.Read(readBuffer, 0, readBuffer.Length);
}
catch (IOException)
{
IOFailed = true;
throw;
}
if (read != 0)
{
if (_decryptor != null)
{
_decryptor.ProcessBytes(readBuffer, 0, read, readBuffer, 0);
}
if (_decompressor != null)
{
read = HandleDecompression(readBuffer, read);
readBuffer = _compressionBuffer;
}
WriteToInputBuffer(readBuffer, read);
}
}
var dataLength = ReadFromInputBuffer(buffer, offset, count);
return(dataLength);
}
public void Flush()
{
var buffer = _outputBuffer.ToArray();
_outputBuffer.Clear();
var count = buffer.Length;
if (_compressor != null)
{
count = HandleCompression(buffer, count);
buffer = _compressionBuffer;
}
if (_encryptor != null)
{
_encryptor.ProcessBytes(buffer, 0, count, buffer, 0);
}
try
{
_dataProvider.Write(buffer, 0, count);
_dataProvider.Flush();
}
catch (IOException)
{
IOFailed = true;
throw;
}
}
public void DecodeCryptogram(string key)
{
byte[] result = new byte[cryptogramByte.Count];
byte[] pass = Encoding.ASCII.GetBytes(key);
try
{
RC4Engine rc4 = new RC4Engine();
KeyParameter keyParam = new KeyParameter(pass);
rc4.Init(true, keyParam);
rc4.ProcessBytes(cryptogramByte.ToArray(), 0, cryptogramByte.Count, result, 0);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
if (CheckDecryptedText(result))
{
Console.Write("klucz: " + key + ": ");
foreach (var c in result)
{
if (c != 0)
{
Console.Write((char)c);
}
}
Console.WriteLine();
}
}
public void ThreadRun()
{
int i = 0;
byte[] clearText = new byte[kryptogram.Length];
string czescKlucza1 = "";
while (i <= szukaj.max)
{
i = szukaj.wykonane();
if (i <= szukaj.max)
{
czescKlucza1 = i.ToString("X");
while (czescKlucza1.Length < 8)
{
czescKlucza1 = "0" + czescKlucza1;
}
String klucz = czescKlucza1.ToLower() + czescKlucza2;
try
{
RC4Engine rc4 = new RC4Engine();
KeyParameter keyParam = new KeyParameter(System.Text.Encoding.ASCII.GetBytes(klucz));
rc4.Init(false, keyParam);
rc4.ProcessBytes(kryptogram, 0, kryptogram.Length, clearText, 0);
}
catch (Exception e)
{
}
bool zgodne = true;
for (int j = 0; j < clearText.Length; j++)
{
if (!alfabet.lista_znakow.Contains((char)clearText[j]))
{
zgodne = false;
}
}
//jeśli znalazl dobry klucz
if (zgodne)
{
Console.Write("Wiadomosc : ");
foreach (byte x in clearText)
{
Console.Write("{0} ", (char)x);
}
Console.WriteLine("");
Console.WriteLine(" klucz: {0}",klucz);
szukaj.ileZrobiono = szukaj.max;
}
}
}
}