This process is known as revocation. CRLs are lists of revoked certificates published periodically, while OCSP allows software to query the CA in real-time to verify the current status of a specific certificate.
Understanding OCSP: How Certificate Authorities Check Revocation Status in Real-Time
Why Revocation is Necessary Trust is dynamic, and sometimes certificates must be invalidated before their expiration date. Organization Validated (OV): A moderate level where the CA verifies the organization’s existence and operational status.
This request is then sent to a CA, which rigorously validates the information provided. Once verified, the CA signs the certificate with its private key, creating a mathematically verifiable link between the public key and the entity's identity.
Understanding Online Certificate Status Protocol (OCSP) and Certificate Revocation
The hierarchy of trust is generally divided into three categories, each providing a different degree of assurance to the end user. This trust is established through root certificates, which are embedded directly into operating systems and browsers during manufacturing.
More About How do certificate authorities work
Looking at How do certificate authorities work from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on How do certificate authorities work can make the topic easier to follow by connecting earlier points with a few simple takeaways.