internal ClientEncryptionSink(IClientChannelSink next, EncryptionHelper encrHelper)
{
nextSink = next;
this.encrHelper = encrHelper;
}
void IClientChannelSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, System.IO.Stream requestStream, out ITransportHeaders responseHeaders, out System.IO.Stream responseStream)
{
if (!encrHelper.HasKey)
{
ITransportHeaders encrHeaders = new TransportHeaders();
System.IO.MemoryStream encrStream = new System.IO.MemoryStream();
encrHelper.Initiate(encrHeaders);
ITransportHeaders encredHeaders;
System.IO.Stream encredStream;
try
{
nextSink.ProcessMessage(msg, encrHeaders, encrStream, out encredHeaders, out encredStream);
encrHelper.Finalize(encredHeaders);
}
catch (Exception ex)
{
encrHelper = new EncryptionHelper();
}
}
/*System.IO.MemoryStream memStream = EncryptionHelper.ToMemoryStream(requestStream);
string text = new string(System.Text.UTF8Encoding.UTF8.GetChars(memStream.ToArray()));
requestStream = memStream;*/
encrHelper.Encrypt(requestHeaders, ref requestStream);
nextSink.ProcessMessage(msg, requestHeaders, requestStream, out responseHeaders, out responseStream);
if (EncryptionHelper.IsEncrypted(responseHeaders))
{
encrHelper.Decrypt(responseHeaders, ref responseStream);
}
else
{
encrHelper = new EncryptionHelper();
}
/*
System.IO.MemoryStream respStream = EncryptionHelper.ToMemoryStream(responseStream);
text = new string(System.Text.UTF8Encoding.UTF8.GetChars(respStream.ToArray()));
responseStream = respStream;*/
}
ServerProcessing IServerChannelSink.ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, System.IO.Stream requestStream, out IMessage responseMsg, out ITransportHeaders responseHeaders, out System.IO.Stream responseStream)
{
if (EncryptionHelper.IsInitiation(requestHeaders))
{
EncryptionHelper helper = new EncryptionHelper();
responseHeaders = new TransportHeaders();
responseStream = new System.IO.MemoryStream();
responseMsg = requestMsg;
helper.Respond(requestHeaders, responseHeaders);
contexts.Add(helper.Ticket, helper);
return ServerProcessing.Complete;
}
else if (EncryptionHelper.IsEncrypted(requestHeaders) && contexts.ContainsKey(EncryptionHelper.GetTicket(requestHeaders)) && contexts[EncryptionHelper.GetTicket(requestHeaders)].HasKey)
{
EncryptionHelper helper = contexts[EncryptionHelper.GetTicket(requestHeaders)];
helper.Decrypt(requestHeaders, ref requestStream);
/*System.IO.MemoryStream memStream = EncryptionHelper.ToMemoryStream(requestStream);
string text = new string(System.Text.UTF8Encoding.UTF8.GetChars(memStream.ToArray()));*/
ServerProcessing result = nextSink.ProcessMessage(sinkStack, requestMsg, requestHeaders, requestStream, out responseMsg, out responseHeaders, out responseStream);
/*System.IO.MemoryStream respStream = EncryptionHelper.ToMemoryStream(responseStream);
string text = new string(System.Text.UTF8Encoding.UTF8.GetChars(respStream.ToArray()));
responseStream = respStream;*/
helper.Encrypt(responseHeaders, ref responseStream);
return result;
}
else
throw new System.Security.Cryptography.CryptographicException("Message is not encrypted or no key could be found for this host.");
}
