public void Decrypt()
{
try
{
if (m_vType == 10101)
{
byte[] cipherText = m_vData;
Client.CPublicKey = cipherText.Take(32).ToArray();
Hasher b = Blake2B.Create(new Blake2BConfig
{
OutputSizeInBytes = 24
});
b.Init();
b.Update(Client.CPublicKey);
b.Update(Key.Crypto.PublicKey);
Client.CRNonce = b.Finish();
cipherText = CustomNaCl.OpenPublicBox(cipherText.Skip(32).ToArray(), Client.CRNonce, Key.Crypto.PrivateKey, Client.CPublicKey);
Client.CSharedKey = Client.CPublicKey;
Client.CSessionKey = cipherText.Take(24).ToArray();
Client.CSNonce = cipherText.Skip(24).Take(24).ToArray();
Client.CState = 1;
SetData(cipherText.Skip(48).ToArray());
}
else if (m_vType != 10100)
{
Client.CSNonce.Increment();
SetData(CustomNaCl.OpenSecretBox(new byte[16].Concat(m_vData).ToArray(), Client.CSNonce, Client.CSharedKey));
}
}
catch (Exception ex)
{
Client.CState = 0;
}
}
public void Decrypt()
{
try
{
if (m_vType == 10101)
{
var cipherText = m_vData;
Client.CPublicKey = cipherText.Take(32).ToArray();
Blake.Init();
Blake.Update(Client.CPublicKey);
Blake.Update(Key.Crypto.PublicKey);
var tmpNonce = Blake.Finish();
Client.CRNonce = Client.GenerateSessionKey();
var PlainText = CustomNaCl.OpenPublicBox(cipherText.Skip(32).ToArray(), tmpNonce, Key.Crypto.PrivateKey, Client.CPublicKey);
Client.CSharedKey = Client.CPublicKey;
Client.CSessionKey = PlainText.Take(24).ToArray();
Client.CSNonce = PlainText.Skip(24).Take(24).ToArray();
SetData(PlainText.Skip(48).ToArray());
}
else if (m_vType != 10100)
{
Client.CSNonce.Increment();
SetData(CustomNaCl.OpenSecretBox(new byte[16].Concat(m_vData).ToArray(), Client.CSNonce, Client.CSharedKey));
}
}
catch (Exception ex)
{
Client.CState = 0;
}
}
public void Decrypt()
{
try
{
if (Constants.IsRc4)
{
Client.Decrypt(m_vData);
if (m_vType == 10101)
{
Client.State = ClientState.Login;
}
// No need since the decryption occurs on same buffer.
//SetData(m_vData);
}
else
{
if (m_vType == 10101)
{
var cipherText = m_vData;
Client.CPublicKey = cipherText.Take(32).ToArray();
var blake = Blake2B.Create(new Blake2BConfig
{
OutputSizeInBytes = 24
});
blake.Init();
blake.Update(Client.CPublicKey);
blake.Update(Key.Crypto.PublicKey);
Client.CRNonce = blake.Finish();
cipherText = CustomNaCl.OpenPublicBox(cipherText.Skip(32).ToArray(), Client.CRNonce, Key.Crypto.PrivateKey, Client.CPublicKey);
Client.CSharedKey = Client.CPublicKey;
Client.CSessionKey = cipherText.Take(24).ToArray();
Client.CSNonce = cipherText.Skip(24).Take(24).ToArray();
Client.State = ClientState.Login;
SetData(cipherText.Skip(48).ToArray());
}
else
{
if (m_vType != 10100)
{
if (Client.State == ClientState.LoginSuccess)
{
Client.CSNonce.Increment();
SetData(CustomNaCl.OpenSecretBox(new byte[16].Concat(m_vData).ToArray(), Client.CSNonce, Client.CSharedKey));
}
}
}
}
}
catch
{
Client.State = ClientState.Exception;
throw;
}
}