RFC 2585 PKIX Operational Protocols: FTP and HTTP May 1999 1.1. Model The following is a simplified view of the architectural model assumed by the Internet PKI specifications. +---+ | C | +------------+ | e | | End entity | | r | Operational +------------+ | t | transactions ^ | | and management | Management | / | transactions | transactions | | | PKI users | C | v | R | -------------------+--+-----------+----------------- | L | ^ ^ | | | | PKI management | | v | entities | R | +------+ | | e |