When using a certificate authority to create digital certificate, you can include an expiration date. The expiration date may be needed when you want to limit the time a digital certificate will be valid. For example, when you are working with a vendor on a proposal, you may only want them to use your digital certificate until the proposal has been approved.
You Can Revoke Digital Certificates with a Certificate Authority System
Another thing you can do with a certificate authority is use this system to revoke digital certificates. You will need to revoke digital certificates when you do not set an expiration date. This process will require updating the digital certificates on the user’s computer by connecting with the certificate authority system. You will want to revoke digital certificates whenever you terminate employees. This is needed, to make sure someone else does not use their computer to gain access to resources, they would not normally be allowed to use.