The document provides information about serial numbers and validity periods for certificates issued by X509. It explains that a valid serial number is a unique identifier assigned by the source, with a value between 1 and 2147483647. The validity period refers to the number of days a certificate is valid from the time of issuance, with a maximum validity of 20 years for certificates issued by the X509 Certificate Authority.
documents/EFTA00289895.pdf
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