internal static void process_authreq(RdpPacket data)
{
byte[] destinationArray = new byte[10];
byte[] outData = new byte[10];
byte[] buffer3 = new byte[20];
byte[] buffer4 = new byte[30];
byte[] signature = new byte[0x10];
RC4 rc = new RC4();
byte[] buffer6 = null;
if (!parse_authreq(data))
{
throw new RDFatalException("Authentication request is incorrect!");
}
Array.Copy(RDPClient.m_In_Token, 0, destinationArray, 0, 10);
buffer6 = new byte[RDPClient.m_LicenceKey.Length];
Array.Copy(RDPClient.m_LicenceKey, 0, buffer6, 0, RDPClient.m_LicenceKey.Length);
rc.engineInitDecrypt(buffer6);
rc.crypt(RDPClient.m_In_Token, 0, 10, outData, 0);
byte[] sourceArray = generate_hwid();
Array.Copy(outData, 0, buffer4, 0, 10);
Array.Copy(sourceArray, 0, buffer4, 10, 20);
signature = Secure.sign(RDPClient.m_Licence_Sign_Key, 0x10, 0x10, buffer4, buffer4.Length);
Array.Copy(RDPClient.m_LicenceKey, 0, buffer6, 0, RDPClient.m_LicenceKey.Length);
rc.engineInitEncrypt(buffer6);
rc.crypt(sourceArray, 0, 20, buffer3, 0);
send_authresp(destinationArray, buffer3, signature);
}
internal static void send_to_channel(RdpPacket sec_data, int flags, int channel)
{
sec_data.Position = 0L;
byte[] buffer = new byte[sec_data.Length];
sec_data.Read(buffer, 0, buffer.Length);
if ((RDPClient.enc_count == 0x1000) && Secure.RDPEncrypted())
{
Secure.m_Encrypt_Key = Secure.update(Secure.m_Encrypt_Key, RDPClient._r);
byte[] destinationArray = new byte[Secure.m_KeyLength];
Array.Copy(Secure.m_Encrypt_Key, 0, destinationArray, 0, Secure.m_KeyLength);
RDPClient.m_RC4_Enc.engineInitEncrypt(destinationArray);
RDPClient.enc_count = 0;
}
if (Secure.RDPEncrypted())
{
byte[] buffer3 = Secure.sign(RDPClient.m_Sec_Sign_Key, 8, Secure.m_KeyLength, buffer, buffer.Length);
byte[] buffer4 = RDPClient.m_RC4_Enc.crypt(buffer);
sec_data = new RdpPacket();
sec_data.WriteLittleEndian32(flags);
sec_data.Write(buffer3, 0, buffer3.Length);
sec_data.Write(buffer4, 0, buffer4.Length);
}
else
{
flags &= -9;
sec_data = new RdpPacket();
if (flags != 0)
{
sec_data.WriteLittleEndian32(flags);
}
sec_data.Write(buffer, 0, buffer.Length);
}
SendMCS(sec_data, channel);
RDPClient.enc_count++;
}