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What is OCSP Validation?

OCSP validation
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What is OCSP Validation?

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OCSP refers to certificate validation that occurs through the Online Certificate Status Protocol mechanism, this type of validation occurs only when the signer certificate is stamped with an AIA (Authority Information Access) extension. OCSP can be either a replacement or a supplement to checking the validity of a certificate against a Certificate Revocation List (CRL). Using OCSP, when a user attempts to access a server, OCSP sends a request for certificate status information.

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