///<summary>All incoming data filters through here.</summary>
public void HandleData(MemBlock data, ISender return_path, object state)
{
if (!_active)
{
if (_closed == 0)
{
UpdateSH(null, null);
}
return;
}
SecurityDataMessage sdm = new SecurityDataMessage(data);
if (sdm.SPI != _spi)
{
throw new Exception("Invalid SPI!");
}
try {
// try to decrypt the data
lock (_sync) {
_current_sh.DecryptAndVerify(sdm);
}
} catch {
// Maybe this is just a late arriving packet, if it is, we'll just ignore it
if (sdm.Epoch == _last_epoch)
{
return;
// bad packet, let's throw it away!
}
else
{
throw;
}
}
// Hand it to our subscriber
if (_sub != null)
{
_sub.Handle(sdm.Data, this);
}
_incoming = true;
_running = true;
}
public void TDES()
{
SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
SymmetricAlgorithm sa = new TripleDESCryptoServiceProvider();
SecurityHandler sh = new SecurityHandler(sa, sa, sha1, sha1, 0);
byte[] data = new byte[1024];
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
rng.GetBytes(data);
SecurityDataMessage sdm = new SecurityDataMessage();
sdm.SPI = 5;
sdm.Data = MemBlock.Reference(data);
sh.SignAndEncrypt(sdm);
SecurityDataMessage sdm_d = new SecurityDataMessage(sdm.Packet);
sh.DecryptAndVerify(sdm_d);
Assert.AreEqual(sdm.Data, sdm.Data, "SecurityHandler");
}