What is a Serial Number?
A serial number for an X509 certificate is a number assigned by the issuer that
distinguishes the certificate from other certificates. A valid serial number contains a
value between 1 and 2147483647.
What is a Validity Period?
A validity period for an X509 certificate is the number of days the certificate is valid from
the time it is issued. Certificates issued by Certificate Assistant have a maximum validity
period of 20 years.
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