From the course: CompTIA Security+ (SY0-701) Cert Prep: 1 General Security Concepts

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Revoke a digital certificate

Revoke a digital certificate

From the course: CompTIA Security+ (SY0-701) Cert Prep: 1 General Security Concepts

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Revoke a digital certificate

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The security of digital certificates depends upon the security of the private keys associated with those certificates. If the certificate owner's private key is compromised, the owner needs a way to revoke the digital certificate so that it can't be used to impersonate them. There are two methods for revoking a digital certificate. Both are maintained by the certificate authority who issued the certificate. The original approach is the certificate revocation list or CRL. When the CA wishes to revoke a digital certificate using the CRL, it places the serial number of that certificate on its CRL. Anyone accessing a digital certificate is responsible for downloading the certificate revocation list and verifying that the serial number of the certificate they're verifying is not included on that list before relying upon the certificate. Now, this approach is inefficient because it often has time delays and consumes a lot of network bandwidth, as everyone on the Internet attempted to…

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