Passing Windows Credentials across Remoting Service to SQL Server

I need to pass my Windows Credentials across Remoting Service to SQL Server.

 

I have tried adding an additional parameter (Windows Identity object) in the method of the Remoting Service and passed the value from my client. But, I got the exception "Invalid token for impersonation - it cannot be duplicated".

 

Presently, am trying to find a solution using Channel Sinks.

 

If anyone has worked on it or has a fair idea, please reply.

 

I've tried installing and using the dlls "Microsoft.Samples.Security.SSPI.dll" and "Microsoft.Samples.Runtime.Remoting.Security.dll" (which I've downloaded from msdn) into my project. But, am getting a FileNotFound exception.

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