private bool IsResponseLookupNameMessageValid(SignedLookupResponse signedResponse)
{
bool result = false;
UserEntry responder = ServerApp._pkiCommunicator.GetVerifiedUserPublicKey(signedResponse.Username);
if (responder != null)
{
RSACryptoServiceProvider responderProvider = new RSACryptoServiceProvider();
responderProvider.FromXmlString(responder.PubKey);
string data = signedResponse.Username + signedResponse.Uri;
foreach (RedirectionFile f in signedResponse.FileList)
data += f.ToString();
byte[] bytedata = Encoding.Default.GetBytes(data);
if (responderProvider.VerifyData(bytedata, "SHA1", signedResponse.Signature))
result = true;
else
result = false;
}
return result;
}
private void sendResponseToLookupQuery(QueryByName q)
{
ServerToServerServices origin;
RemoteAsyncLookupNameResponseDelegate remoteResDel;
System.Windows.Forms.MessageBox.Show(ServerApp._user.Username + "@" + ServerApp._primaryURI + " : Its my node name!");
String i = q.Uris.ElementAt(0);
origin = ((ServerToServerServices)Activator.GetObject(typeof(ServerToServerServices),
i + "/" + ServicesNames.ServerToServerServicesName));
remoteResDel = new RemoteAsyncLookupNameResponseDelegate(origin.lookupNameResponse);
/* sign response */
string data = getResponseDataForHash();
byte[] bytestreamData = Encoding.Default.GetBytes(data);
byte[] responseSignature = ServerApp._rsaProvider.SignData(bytestreamData, "SHA1");
SignedLookupResponse signedLookupResponse =
new SignedLookupResponse(ServerApp._user.Username, ServerApp._myUri,
ServerApp._user.RedirectionList, responseSignature);
remoteResDel.BeginInvoke(signedLookupResponse, null, null);
}
public void lookupNameResponse(SignedLookupResponse signedResponse)
{
if (IsResponseLookupNameMessageValid(signedResponse))
{
string name = signedResponse.Username;
string uri = signedResponse.Uri;
List<RedirectionFile> redList = signedResponse.FileList;
ClientServices cliente = (ClientServices)Activator.GetObject(
typeof(ClientServices),
ServerApp._clientUri + "/" + ServicesNames.ClientServicesName);
cliente.lookupNameResponse(name, uri, redList);
}
}