Generating a token request (WS-Trust)-HELP

[Francisco Alvarez]

Hello. I'm trying to make a web service client to consume a service with security. The first thing I need to do is generate a token request using WS-Trust and then sign it. Send this token request to the STS and then receive a token signed by the STS. Which libraries I can use to do this? Does anyone have an example to take to help?

Thanks.
Francisco.