How do I can check a password Hash in WSE 2.0

From: Juan Irigoyen (juan_irigoyen_at_hotmail.com)
Date: 06/11/04 

Date: Fri, 11 Jun 2004 17:04:30 +0200

By example

Client

token = new UsernameToken("juan", "1111", PasswordOption.TextPlain );

Server

    protected override string AuthenticateToken( UsernameToken token )
    {
                ncadena = '1111';
         return ncadena;
    }

This sample go well but if the password is SendHashed the sample donīt

Client

token = new UsernameToken("juan", "1111", PasswordOption.SendHashed );

Server

    protected override string AuthenticateToken( UsernameToken token )
    {
                ncadena = '1111';
         return ncadena;
    }

I donīt find example for this problem.
Thanks,