Added in API level 1

javax.security.auth

This package provides a framework for authentication and authorization. The framework allows authentication to be performed in pluggable fashion. Different authentication modules can be plugged under an application without requiring modifications to the application itself. The authorization component allows specification of access controls based on code location, code signers and code executors (Subjects).

Interfaces

Destroyable Objects such as credentials may optionally implement this interface to provide the capability to destroy its contents. 

Classes

AuthPermission Legacy security code; do not use. 
PrivateCredentialPermission Legacy security code; do not use. 
Subject

A Subject represents a grouping of related information for a single entity, such as a person. 

SubjectDomainCombiner Legacy security code; do not use. 

Exceptions

DestroyFailedException Signals that a destroy operation failed.