CYLINK CORPORATION

                                  CERTIFICATION

In connection with the periodic report of Cylink  Corporation (the "Company") on
Form 10-Q for the period ended  September 28, 2002 as filed with the  Securities
and Exchange Commission (the "Report"),  I, R. Christopher  Chillingworth,  Vice
President of Finance and Chief Financial Officer of the Company,  hereby certify
as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350
of the United States Code, that to the best of my knowledge:

              (1) the Report fully  complies  with the  requirements  of Section
              13(a) or 15(d), as applicable,  of the Securities  Exchange Act of
              1934, and

              (2) the information  contained in the Report fairly  presents,  in
              all material  respects,  the  financial  condition  and results of
              operations  of the  Company  at the  dates  and  for  the  periods
              indicated.

Date: November 13, 2002                By:      /s/ R. Christopher Chillingworth
                                                --------------------------------
                                                R. Christopher Chillingworth
                                                Vice President of Finance and
                                                Chief Financial Officer
                                                Cylink Corporation