From the course: CompTIA CySA+ (CS0-002) Cert Prep: 4 Software and Systems Security

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Revoking a digital certificate

Revoking a digital certificate

From the course: CompTIA CySA+ (CS0-002) Cert Prep: 4 Software and Systems Security

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Revoking a digital certificate

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- [Instructor] The security of a digital certificate depends upon the security of the private key associated with that certificate. If the certificate owner's private key is compromised, the certificate authority needs a way to revoke that digital certificate so that it can't be used to impersonate the owner. There are two methods for revoking a digital certificate. Both are maintained by the certificate authority who originally issued the certificate. The first original approach is the Certificate Revocation List or CRL. When the CA wishes to revoke a digital certificate using the CRL, the simply places the serial number of that certificate on the list. Anyone access the digital certificate is responsible for downloading the CA's Certificate Revocation List and verifying that the serial number of the certificate is not included on that list before relying on it. This approach is a little inefficient because it often has…

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