The user interface to the password management facility is provided by subcommands to the rgy_edit and dcecp commands. These subcommands enforce password management policy for principals and enable them to request generated passwords. See the rgy_edit(8sec) and dcecp(8dce) reference pages and the OSF DCE Administration Guide - Core Components for information on using these commands to create and change principal passwords.
The API to the password management facility consists of routines that are prefixed with sec_pwd_mgmt_. See the appropriate reference pages and The Password Management API for information on these routines.