Hi KDV,

Code for the custom username token manager:

public class CustomUsernameTokenManager : UsernameTokenManager
{
 /// <summary>
 /// Constructs an instance of this security token manager.
 /// </summary>
 public CustomUsernameTokenManager()
 {
 }

 /// <summary>
 /// Constructs an instance of this security token manager.
 /// </summary>
 /// <param name="nodes">An XmlNodeList containing XML elements from a
configuration file.</param>
 public CustomUsernameTokenManager(XmlNodeList nodes)
  : base(nodes)
 {
 }

       protected override string AuthenticateToken(UsernameToken token)
       {
           //Return the user password
           return "MyPassword";
       }

       public override void VerifyToken(SecurityToken token)
       {
           try
           {
               base.VerifyToken(token);
           }
           catch (Exception e)
           {
               //Do something
               throw e;
           }
       }

}

Code for the custom assertion:

public class MyAssertion : Microsoft.Web.Services3.Design.PolicyAssertion
   {

       public override Microsoft.Web.Services3.SoapFilter
CreateClientInputFilter(Microsoft.Web.Services3.Design.FilterCreationContext
context)
       {
           return null;
       }

       public override Microsoft.Web.Services3.SoapFilter
CreateClientOutputFilter(Microsoft.Web.Services3.Design.FilterCreationContext
context)
       {
           return new MyFilter();
       }

       public override Microsoft.Web.Services3.SoapFilter
CreateServiceInputFilter(Microsoft.Web.Services3.Design.FilterCreationContext
context)
       {
           return null;
       }

       public override Microsoft.Web.Services3.SoapFilter
CreateServiceOutputFilter(Microsoft.Web.Services3.Design.FilterCreationContext
context)
       {
           return new MyFilter();
       }

       public override void ReadXml(XmlReader reader,
System.Collections.Generic.IDictionary<string, Type> extensions)
       {
           reader.ReadStartElement("customAssertion");

           if (!isEmpty)
               reader.ReadEndElement();
       }

       public override void WriteXml(XmlWriter writer)
       {
           writer.WriteStartElement("customAssertion");
           writer.WriteEndElement();
       }

       protected class MyFilter : Microsoft.Web.Services3.SoapFilter
       {
           public override Microsoft.Web.Services3.SoapFilterResult
ProcessMessage(Microsoft.Web.Services3.SoapEnvelope envelope)
           {
               if (envelope.Fault is
System.Web.Services.Protocols.SoapException)
               {
                   throw new Exception("My friendly exception");
               }

               return Microsoft.Web.Services3.SoapFilterResult.Continue;
           }
       }
   }

Policy Configuration for the custom assertion:

<policies xmlns="http://schemas.microsoft.com/wse/2005/06/policy">
 <extensions>
   <extension name="customAssertion" type="MyAssertion"/>
 </extensions>
<policy name="Policy">
   <customAssertion/>
   <!--Security assertion-->
</policy>

I hope this can help you

Regards,
Pablo Cibraro
http://weblogs.asp.net/cibrax