public ClientSession(Socket pSocket) : base(pSocket)
{
IP = BitConverter.ToUInt32(IPAddress.Parse(GetIP()).GetAddressBytes(), 0);
InitiateReceive(2, true);
CRYPT_KEY = CryptoGenerators.GenerateKey();
CRYPT_HMAC = CryptoGenerators.GenerateKey();
byte[] TEMP_PREFIX = CryptoGenerators.GeneratePrefix();
using (OutPacket oPacket = new OutPacket(CenterOpcodes.SET_SECURITY_KEY_NOT))
{
oPacket.WriteBytes(TEMP_PREFIX);
oPacket.WriteInt((int)8);
oPacket.WriteBytes(CRYPT_HMAC);
oPacket.WriteInt((int)8);
oPacket.WriteBytes(CRYPT_KEY);
oPacket.WriteHexString("00 00 00 01 00 00 00 00 00 00 00 00");
oPacket.Assemble(CryptoConstants.GC_DES_KEY, CryptoConstants.GC_HMAC_KEY, CRYPT_PREFIX, ++CRYPT_COUNT);
Send(oPacket);
}
CRYPT_PREFIX = TEMP_PREFIX;
using (OutPacket oPacket = new OutPacket(CenterOpcodes.ENU_WAIT_TIME_NOT))
{
oPacket.WriteHexString("00 00 27 10");
oPacket.Assemble(CRYPT_KEY, CRYPT_HMAC, CRYPT_PREFIX, ++CRYPT_COUNT);
Send(oPacket);
}
}
public ClientSession(Socket pSocket) : base(pSocket)
{
IP = BitConverter.ToUInt32(IPAddress.Parse(GetIP()).GetAddressBytes(), 0);
InitiateReceive(2, true);
CurrentChannel = null;
CurrentRoom = null;
CRYPT_KEY = CryptoGenerators.GenerateKey();
CRYPT_HMAC = CryptoGenerators.GenerateKey();
byte[] TEMP_PREFIX = CryptoGenerators.GeneratePrefix(); // Prefix
LogFactory.GetLog("Main").LogHex("IV: ", CRYPT_KEY);
LogFactory.GetLog("Main").LogHex("HMAC: ", CRYPT_HMAC);
using (OutPacket oPacket = new OutPacket(GameOpcodes.EVENT_ACCEPT_CONNECTION_NOT))
{
oPacket.WriteBytes(TEMP_PREFIX);
oPacket.WriteInt((int)8);
oPacket.WriteBytes(CRYPT_HMAC);
oPacket.WriteInt((int)8);
oPacket.WriteBytes(CRYPT_KEY);
oPacket.WriteHexString("00 00 00 01 00 00 00 00 00 00 00 00");
oPacket.Assemble(CryptoConstants.GC_DES_KEY, CryptoConstants.GC_HMAC_KEY, CRYPT_PREFIX, ++CRYPT_COUNT);
Send(oPacket);
}
// Prefix
CRYPT_PREFIX = TEMP_PREFIX;
}
/// <summary>
/// 패킷을 보낼 수 있도록 가공한다. (zlib 압축 데이터 여기서 생성)
/// </summary>
/// <param name="key">Encryption key</param>
/// <param name="hmacKey">HMAC generation key</param>
/// <param name="prefix">The 6 bytes between the packet size and the IV</param>
public void CompressAndAssemble(byte[] key, byte[] hmacKey, byte[] prefix, int count)
{
// 버퍼를 복구할 수 있도록.
_buffer_before_assemble = _buffer;
byte[] data = Compression.Compress(_buffer);
byte[] Op = BitConverter.GetBytes((short)Opcode);
byte[] Len = BitConverter.GetBytes((int)data.Length + 4); // 버퍼 + 압축내용
Array.Reverse(Op);
Array.Reverse(Len);
byte[] TempData;
TempData = BytesUtil.ConcatBytes(Op, Len);
TempData = BytesUtil.ConcatBytes(TempData, BitConverter.GetBytes((bool)true)); // 압축임
TempData = BytesUtil.ConcatBytes(TempData, BitConverter.GetBytes((int)_buffer.Length)); // 실제 크기
_buffer = BytesUtil.ConcatBytes(TempData, data);
byte[] IV = CryptoGenerators.GenerateIV();
byte[] dataToAssemble = BytesUtil.ConcatBytes(
BytesUtil.ConcatBytes(prefix, BitConverter.GetBytes(count)),
BytesUtil.ConcatBytes(IV, CryptoFunctions.EncryptPacket(_buffer, key, IV)));
_buffer = CryptoFunctions.ClearPacket(dataToAssemble, hmacKey);
}