3.2.1.4.3.2.1 PropID = 0x00000001 (CR_PROP_FILEVERSION) "CA File Version"

The client has requested the CA file version property. If the CA implements the Config_File_Version datum, the CA constructs a [UNICODE] string of the form "w.x.y.z" or "w.x:y.z",<89> where w, x, y, and z MUST be numeric values indicating the version of the CA. If the CA does not implement the Config_File_Version datum, it MUST return a NULL string. The [UNICODE] string MUST be returned through the CERTTRANSBLOB (section 2.2.2.2) structure.<90>

Marshaling rules for CERTTRANSBLOB are specified in section 2.2.2.2.