Signed attribute troubles

Hi all,
I have 2 questions:

* I am trying to add the ESSCertID attribute (CSM_SigningCertificate) to a
signature, but I could not find out how to create a CSM_SigningCertificate
object?
The main problem comes from the (CSM_CertIDLst) m_Certs member: how can I
get the hash of a certificate, and how can I create an IssuerSerial1
object?

* I would try to add new signed attributes (for example "claimed role" from
RFC 3126) which are not implemented in CSM_Attrib class. Could you please
tell me how I can do that? (I think the easiest way is to add new SNACC
functions in sm_ess.cpp. Am I right?)

Thanks in advance,
     Olivier