The text provides definitions related to X509 certificates, including the concept of a serial number and validity period. A serial number is a unique identifier assigned by the issuer to distinguish the certificate from others, with a valid range between 1 and 2147483647. The validity period refers to the number of days a certificate remains valid from its issuance, with a maximum period of 20 years for certificates issued by the Certificate Assistant.
documents/EFTA00289898.pdf
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