### Interfaces to the Login Facility

User interfaces to the login facility consist of the following tools:

· dce_login

Enables an interactive principal to log into DCE, but does not change the principal's local identity

· login

Enables an interactive principal to log in

· su

Enables a logged-in interactive principal to assume a different principal identity

The API to the login facility consists of calls that are prefixed with sec_login_. This API enables application processes to assume their network identities. Network login and system login programs are examples of applications that call this API.

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