The following interfaces are exported by the Server Engine and are called by external objects:
| ICertConfig | Used by clients to get information about a server. |
| ICertRequest | Used to send a request to the server and get the results of the request. |
| ICertAdmin | Used by administration programs to manage requests, certificates, and revocation. |
| ICertServerPolicy | Used by the policy module to get and set certificate and request properties. |
| ICertServerExit | Used by exit modules to get and set certificate and request properties. |