/// <summary>
/// Decrypts the specified message.
/// </summary>
/// <param name="Message">The message.</param>
public byte[] Decrypt(Packet Message)
{
byte[] EncryptedData = Message.Payload.ToArray();
byte[] DecryptedData = null;
if (Message.Identifier == 24112)
{
Message.Identifier = 0;
}
if (this.ReceiveEncrypter1 == null)
{
if (this.PepperState == 0)
{
if (Message.Identifier == 10100)
{
DecryptedData = PepperCrypto.PepperAuthentification(EncryptedData);
}
}
else
{
switch (this.PepperState)
{
case 1:
{
DecryptedData = PepperCrypto.PepperAuthentificationResponseOpen(EncryptedData);
if (Message.Identifier == 20100)
{
int KeyL = DecryptedData[0] << 24 | DecryptedData[1] << 16 | DecryptedData[2] << 8 | DecryptedData[3];
if (KeyL != 24)
{
Logging.Error(this.GetType(), "Decrypt() - Session key length is not valid. (" + KeyL + ")");
}
Array.Copy(DecryptedData, 4, this.SessionKey = new byte[KeyL], 0, KeyL);
}
break;
}
case 2:
{
if (Message.Identifier == 10101)
{
DecryptedData = PepperCrypto.PepperLoginOpen(PepperFactory.ServerPublicKey, PepperFactory.ServerSecretKey, this.SessionKey, ref this.ClientPublicKey, ref this.ClientNonce, EncryptedData);
}
else
{
goto default;
}
break;
}
case 3:
{
if (Message.Destination == Destination.FROM_SERVER)
{
DecryptedData = PepperCrypto.PepperLoginResponseOpen(this.ClientNonce, this.ProxyPublicKey, PepperFactory.SupercellServerPublicKey, this.ProxySecretKey, ref this.ServerNonce, ref this.SecretKey, EncryptedData);
this.ReceiveEncrypter1 = new PepperEncrypter(this.ClientNonce, this.SecretKey);
this.ReceiveEncrypter2 = new PepperEncrypter(this.ServerNonce, this.SecretKey);
}
else
{
goto default;
}
break;
}
default:
{
DecryptedData = EncryptedData;
break;
}
}
}
}
else
{
if (Message.Destination == Destination.FROM_CLIENT)
{
DecryptedData = this.ReceiveEncrypter1.Decrypt(EncryptedData);
}
else
{
DecryptedData = this.ReceiveEncrypter2.Decrypt(EncryptedData);
}
}
return(DecryptedData);
}
/// <summary>
/// Encrypts the specified message.
/// </summary>
/// <param name="Message">The message.</param>
public byte[] Encrypt(Packet Message)
{
byte[] DecryptedData = Message.Decrypted_Data.ToArray();
byte[] EncryptedData = Message.Decrypted_Data.ToArray();
if (this.SendEncrypter1 == null)
{
if (this.PepperState == 0)
{
if (Message.Identifier == 10100)
{
++this.PepperState;
EncryptedData = PepperCrypto.PepperAuthentification(EncryptedData);
}
}
else
{
switch (this.PepperState)
{
case 1:
{
this.PepperState = 2;
EncryptedData = PepperCrypto.PepperAuthentificationResponse(EncryptedData);
break;
}
case 2:
{
if (Message.Identifier == 10101)
{
this.PepperState = 3;
EncryptedData = PepperCrypto.PepperLogin(PepperFactory.SupercellServerPublicKey, this.ProxySecretKey, this.ProxyPublicKey, this.SessionKey, this.ClientNonce, DecryptedData);
}
else
{
goto default;
}
break;
}
case 3:
{
if (Message.Destination == Destination.FROM_SERVER)
{
this.PepperState = -1;
EncryptedData = PepperCrypto.PepperLoginResponse(this.ClientNonce, PepperFactory.ServerPublicKey, this.ClientPublicKey, PepperFactory.ServerSecretKey, this.ServerNonce, this.SecretKey, DecryptedData);
this.SendEncrypter1 = new PepperEncrypter(this.ClientNonce, this.SecretKey);
this.SendEncrypter2 = new PepperEncrypter(this.ServerNonce, this.SecretKey);
}
else
{
goto default;
}
break;
}
default:
{
EncryptedData = DecryptedData;
break;
}
}
}
}
else
{
if (Message.Destination == Destination.FROM_CLIENT)
{
EncryptedData = this.SendEncrypter1.Encrypt(DecryptedData);
}
else
{
EncryptedData = this.SendEncrypter2.Encrypt(DecryptedData);
}
}
return(EncryptedData);
}