public static void HandlePacketEncryptionResponse(Client client, EncryptionKeyResponse packet)
{
client.SharedKey = PacketCryptography.Decrypt(packet.SharedSecret);
RijndaelManaged recv = PacketCryptography.GenerateAES(client.SharedKey);
RijndaelManaged send = PacketCryptography.GenerateAES(client.SharedKey);
client.Decrypter = recv.CreateDecryptor();
byte[] packetToken = PacketCryptography.Decrypt(packet.VerifyToken);
if (!packetToken.SequenceEqual(PacketCryptography.VerifyToken))
{
client.Kick("Wrong token");
return;
}
client.Send_Sync_Packet(new EncryptionKeyResponse());
client.Encrypter = send.CreateEncryptor();
}
public static bool IsAuthenticated(Client client)
{
if (client.Server.UseOfficalAuthentication)
{
try
{
var uri = new Uri(
String.Format(
"http://session.minecraft.net/game/checkserver.jsp?user={0}&serverId={1}",
client.Username,
// As per http://mc.kev009.com/Protocol_Encryption
PacketCryptography.JavaHexDigest(Encoding.UTF8.GetBytes(client.ConnectionId)
.Concat(client.SharedKey)
.Concat(PacketCryptography.PublicKeyToAsn1(client.Server.ServerKey))
.ToArray())
));
string authenticated = Http.GetHttpResponse(uri);
if (authenticated != "YES")
{
client.Kick("Authentication failed");
return(false);
}
}
catch (Exception exc)
{
client.Kick("Error while authenticating...");
client.Logger.Log(exc);
return(false);
}
return(true);
}
return(true);
}