Select 1, 2 or 3-Years as required, or order a 14 or 28-Day Free Trial. Read more > [3] for a complete understanding of the Validity period
Links:[1] http://www2.digi-sign.com/product/ocsp [2] http://www2.digi-sign.com/winpop/ocsp.php [3] http://www2.digi-sign.com/validity+period