code: public boolean[] getSubjectUniqueID() {
          if (info == null)
              return null;
          try {
              UniqueIdentity id = (UniqueIdentity)info.get(
                                   X509CertInfo.SUBJECT_ID);
              if (id == null)
                  return null;
              else
                  return (id.getId());
          } catch (Exception e) {
              return null;
          }
      }
docs: Gets the Subject Unique Identity from the certificate.
  
  @return the Subject Unique Identity.