SSL certificate chain terminology


The certificate rank in the chain can be root, intermediate or end-user.

Common name

Validation type

The validation type can be at the domain or organization level or an extended validation.

Valid from and to

Date range during which the certificate is valid.


Who or what organization the certificate has been issued to.


The Certificate Authority (CA) that issued the certificate.

Serial number

The certificate serial number a unique number issued by the CA in order to track revocation.


The signature of an SSL certificate is the algorithm that was used to sign the public key.


Lists one or more purposes that the certificate can be used for.

Public key information

The type, size (in bits) and Privacy Enhanced Mail (PEM) format of the public key.


This section lists all extensions associated with the certificate.