problems with making Encrypted mail using SFL

 hi all, 
      Sorry for I'm a new comer to SFL and this mailing list.   Please forgive me for asking so  simple problems.  
  I write  a program  to  make enveloped mail  by SFL.     But it reports: 
    ERROR INFORMATION AND STACK:

 ERROR INFORMATION: no instance supports requested cont encr alg
        ERROR CODE: 1006        SOURCE LINE NUMBER: 1165
        FILE: sm_Encrypt.cpp
        FUNCTION: CSM_DataToEncrypt::Encrypt

     now I find that it's probably for I passed the wrong contentEncryptionOID to pEncryptMsg :  
   
    CSM_MsgToEncrypt *pEncryptMsg;
    CSM_OID oidEncryptedData(id_encryptedData);
    pEncryptMsg->SetContentEncryptOID(&contentEncryptionOID);

   1) How should I  get  the    CSM_OID object to pass it to  pEncryptMsg->SetContentEncryptOID()  function?
  2)  How  can I  see   the list of  the Algorithm OIDs supported by the available instances?   

sincerely,
Wooce
[email protected]