Other Packages 
Package Description
javax.security.auth.message
This package defines the core interfaces of the JSR 196 message authentication SPI.
javax.security.auth.message.callback
This package defines callback interfaces that may be used by a pluggable message authentication module to interact with the message processing runtime that invoked the module.
javax.security.auth.message.config
This package defines the interfaces implemented by JSR 196 compatible configuration systems.
javax.security.auth.message.module
This package defines the interfaces implemented by JSR 196 compatible authentication modules.