public ISaslStep Transition(SaslConversation conversation, byte[] bytesReceivedFromServer)
{
try
{
// NOTE: We simply check whether we can successfully decrypt the message,
// but don't do anything with the decrypted plaintext
_ = _context.DecryptMessage(0, bytesReceivedFromServer);
}
catch (GssapiException ex)
{
throw new MongoAuthenticationException(conversation.ConnectionId, "Unable to decrypt message.", ex);
}
int length = 4;
if (_authorizationId != null)
{
length += _authorizationId.Length;
}
bytesReceivedFromServer = new byte[length];
bytesReceivedFromServer[0] = 0x1; // NO_PROTECTION
bytesReceivedFromServer[1] = 0x0; // NO_PROTECTION
bytesReceivedFromServer[2] = 0x0; // NO_PROTECTION
bytesReceivedFromServer[3] = 0x0; // NO_PROTECTION
if (_authorizationId != null)
{
var authorizationIdBytes = Encoding.UTF8.GetBytes(_authorizationId);
authorizationIdBytes.CopyTo(bytesReceivedFromServer, 4);
}
byte[] bytesToSendToServer;
try
{
bytesToSendToServer = _context.EncryptMessage(bytesReceivedFromServer);
}
catch (GssapiException ex)
{
throw new MongoAuthenticationException(conversation.ConnectionId, "Unable to encrypt message.", ex);
}
return(new CompletedStep(bytesToSendToServer));
}
