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SynAc
Term

certificate expiration

The event that occurs when a certificate ceases to be valid because its assigned lifetime has been exceeded. (See: certificate revocation, expire.)

Senses

(I)

The event that occurs when a certificate ceases to be valid because its assigned lifetime has been exceeded. (See: certificate revocation, expire.)

Tutorial: The assigned lifetime of an X.509 certificate is stated in the certificate itself. (See: validity period.)

References
  • IETF RFC 4949 (Internet Security Glossary)Jan 06, 2026
    RFC 4949 — Internet Security Glossary (Version 2)
    https://www.rfc-editor.org/rfc/rfc4949.txt
    RFC 4949 is published by the IETF Trust and marked as "Distribution of this memo is unlimited". Verify IETF Trust copyright/licensing terms for reuse.
    Source: IETF RFC 4949 (rfc-editor.org).