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What is a Certificate Revocation List (CRL), and what is a CRL Distribution Point (CDP)?

April 26, 2017CDP Certificate crl distribution list point Revocation

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What is a Certificate Revocation List (CRL), and what is a CRL Distribution Point (CDP)?

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A1: A CRL is a file that contains a list of revoked certificates, their serial numbers, and their revocation dates. A CRL file also contains the name of the issuer of the CRL, the effective date, and the next update date. By default, the shortest validity period of a CRL is one hour. A CDP is the location where you can download the latest CRL. A CDP is typically listed in the CRL Distribution Points field of the Details tab of the certificate. It is common to list multiple CDPs that use different access methods to make sure that programs, such as Web browsers and Web servers, can always obtain the latest CRL.