public void Serialize(ref redBuffer Buffer, SteamClient Client)
{
Byte[] IV = new Byte[24];
Byte[] Key = new Byte[24];
Byte[] EncryptedData;
// The boring stuff.
Buffer.WriteUInt64(_TransactionID);
Buffer.WriteUInt64(_XUID);
Buffer.WriteUInt64(_Username);
Buffer.WriteUInt32(_Type);
Buffer.WriteUInt32(_Seed);
Buffer.WriteUInt32(_IP);
// Generate the IV and key.
IV = SteamCrypto.CalculateIV(_Seed);
Key = SteamCrypto.CalculateIV(Client.SessionID);
// Resize the buffers to keep 3DES happy.
Array.Resize <Byte>(ref IV, 8);
Array.Resize <Byte>(ref _Data, _Data.Length + (8 - _Data.Length % 8));
// Create a new buffer and encrypt the data.
EncryptedData = new Byte[_Data.Length];
EncryptedData = SteamCrypto.Encrypt(_Data, Key, IV);
// Write the encrypted data to the packet.
Buffer.WriteBlob(EncryptedData);
}
public void CreatePacket(UInt64 TransactionID, UInt32 Result, redBuffer Data, SteamClient Client)
{
_TransactionID = TransactionID;
_XUID = Client.XUID;
_Username = SteamCrypto.fnv1_hash(Client.Username);
_Type = Result;
_Seed = (UInt32)(new Random((Int32)DateTime.Now.Ticks).Next());
_IP = (UInt32)Client.GetIP().Address; // We will only use ipv4 so we ignore that it's deprecated.
_Data = new Byte[Data.Length()];
Array.Copy(Data.GetBuffer(), _Data, Data.Length());
}
public static UInt32 FindClient(Byte[] Username)
{
try
{
var Query = (from Client in Clients
where (SteamCrypto.fnv1_hash(Client.Value.Username) == SteamCrypto.fnv1_hash(Username))
select Client.Key).ToList();
if (Query.Count >= 1)
{
return(Query[0]);
}
}
catch (Exception e)
{
}
return(0xFFFFFFFF);
}
public void Deserialize(redBuffer Buffer, SteamClient Client)
{
Byte[] IV = new Byte[24];
Byte[] Key = new Byte[24];
Byte[] EncryptedData = new Byte[1];
// Read the packet.
Buffer.ReadUInt64(ref _TransactionID);
Buffer.ReadUInt64(ref _XUID);
Buffer.ReadUInt64(ref _Username);
Buffer.ReadUInt32(ref _Type);
Buffer.ReadUInt32(ref _Seed);
Buffer.ReadUInt32(ref _IP);
Buffer.ReadBlob(ref EncryptedData);
// Generate the IV and key.
IV = SteamCrypto.CalculateIV(_Seed);
Key = SteamCrypto.CalculateIV(Client.SessionID);
Array.Resize <Byte>(ref IV, 8);
// Create a new buffer and encrypt the data.
_Data = new Byte[EncryptedData.Length];
_Data = SteamCrypto.Decrypt(EncryptedData, Key, IV);
}
