public LoginCrypt(uint seed, LoginEncryptionKey loginKey)
{
key = new uint[2];
key[0] = ((~seed ^ 0x00001357) << 16) | ((seed ^ 0xffffaaaa) & 0x0000ffff);
key[1] = ((seed ^ 0x43210000) >> 16) | ((~seed ^ 0xabcdffff) & 0xffff0000);
key1 = loginKey.Key1;
key2 = loginKey.Key2;
key3 = loginKey.Key3;
}
public LoginEncryptionDetectionResult Detect(uint seed, IPullStream inputStream, Version defaultVersion)
{
var reader = new StreamPacketReader(new PullStreamToStreamAdapter(inputStream), rawBuffer);
var length = 0;
while (inputStream.DataAvailable && length < 62)
{
rawBuffer[length++] = reader.ReadByte();
}
rawBuffer.CopyTo(decryptedBuffer, 0);
var versionsToTest = GetVersionsToTest(defaultVersion).GetEnumerator();
LoginEncryptionKey?currentKey = null;
LoginCrypt loginCrypt = null;
while (!IsGameServerPacket(decryptedBuffer))
{
if (!versionsToTest.MoveNext())
{
break;
}
var version = versionsToTest.Current;
currentKey = LoginEncryptionKey.FromVersion(version);
loginCrypt = new LoginCrypt(seed, currentKey.Value);
loginCrypt.Decrypt(rawBuffer, decryptedBuffer, 62);
}
if (currentKey.HasValue)
{
return(new LoginEncryptionDetectionResult(decryptedBuffer, loginCrypt, currentKey.Value));
}
else
{
return(new LoginEncryptionDetectionResult(decryptedBuffer));
}
}
