At this moment I'm working on a solution for the following problem:

I have a flash module that needs to communicate with a webservice that is secured with WS-Security and makes use of Token based security. Communicating with the webservice from ASP.NET or any other .NET based application is no problem, but I can't find a single piece of information about how I can achieve the same thing in Flash.

Does anyone have experience in this area or has a clue where I can find information on how to do this from flash?
I'm thinking about doing an experiment together with the guy who creates the flash where we are going to implement the WS-Security functionality required ourselves. But it would be really cool if there is a library for this and we don't need to spend extra time and money on building a proof of concept.