MQe provides default services that enable MQe components to share mini-certificates. The MQe public registry provides a publicly accessible repository for mini-certificates. This is analogous to the personal telephone directory service on a mobile phone, the difference being that, instead of phone numbers, it is a set of mini-certificates of the authenticatable entities that are the most frequently contacted.
The public registry is not purely passive in its services. If accessed to provide a mini-certificate that it does not hold, and if configured with a valid home-server component, the public registry automatically attempts to fetch the requested mini-certificate from the public registry of the home server. These services can be used to provide an intelligent automated mini-certificate replication service that makes the right mini-certificate available at the right time.