pungjoo 2009.05.29 10:33
valDays tells the number of days for which the certificate should be considered valid
Each certificate is valid only for a limited amount of time. This period is described by a start date and time and an end date and time, and
can be as short as a few seconds or almost as long as a century. The validity period chosen depends on a number of factors, such as the
strength of the private key used to sign the certificate or the amount one is willing to pay for a certificate. This is the expected period
that entities can rely on the public value, if the associated private key has not been compromised.