FC_SignFinal - finish a multi-part signing operation.
CK_RV FC_SignFinal( CK_SESSION_HANDLE hSession, CK_BYTE_PTR pSignature, CK_ULONG_PTR pusSignatureLen );
hSessionpSignaturepusSignatureLenFC_SignFinal finishes a multi-part signing operation by returning the complete signature and clearing the operation context. If pSignature is NULL the length of the signature is returned and FC_SignFinal may be called again with pSignature set to retrieve the signature.
A user must log into the token (to assume the NSS User role) before calling FC_SignFinal.