I want to pass windows NT token to other application in SOAP format in C++

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C++

Windows

MS-Access

WSS

tokens

Hi All,
I am developing client application which communicates with OPC UA server.
This server can accept Windows access token.
Before passing windows Access token to the server I want to convert in WS-Security compliant Security Token.
1) Since my application is running on windows I believe that default token that I can get from “OpenThreadToken()” will be Kerberos token and it is WS security complaint.Let me know if I am correct here in my understanding.
2) How do I convert this token in XML format which can be send in the SOAP message header using C++.
3) Do I need to apply any kind of encrypting before sending this token?
4) Can you please provide some links, sites where this kind of information is available?

Thanks,

Ashish