ABSTRACT
Some of the companies in the public key infrastructure
(PKI) business provide all services: hosting Certificate and
Registration Authorities (CAs and RAs); registering sub-
scribers; issuing, publishing, and maintaining the current
status of all types of certificates; and supporting a network
of trust. Other companies sell their extraordinarily powerful
software, which includes CAs, RAs, gateways, connectors,
toolkits, etc. These components allow buyers (clients) to
build their own PKIs to meet their business needs. In all
the scenarios, the processes for registration of PKI subscri-
bers may be very different.
